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Viewing: trace-mapping.tar
LICENSE 0000644 00000002070 15120157341 0005547 0 ustar 00 Copyright 2022 Justin Ridgewell <justin@ridgewell.name> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. README.md 0000644 00000021075 15120157341 0006027 0 ustar 00 # @jridgewell/trace-mapping > Trace the original position through a source map `trace-mapping` allows you to take the line and column of an output file and trace it to the original location in the source file through a source map. You may already be familiar with the [`source-map`][source-map] package's `SourceMapConsumer`. This provides the same `originalPositionFor` and `generatedPositionFor` API, without requiring WASM. ## Installation ```sh npm install @jridgewell/trace-mapping ``` ## Usage ```typescript import { TraceMap, originalPositionFor, generatedPositionFor, sourceContentFor, } from '@jridgewell/trace-mapping'; const tracer = new TraceMap({ version: 3, sources: ['input.js'], sourcesContent: ['content of input.js'], names: ['foo'], mappings: 'KAyCIA', }); // Lines start at line 1, columns at column 0. const traced = originalPositionFor(tracer, { line: 1, column: 5 }); assert.deepEqual(traced, { source: 'input.js', line: 42, column: 4, name: 'foo', }); const content = sourceContentFor(tracer, traced.source); assert.strictEqual(content, 'content for input.js'); const generated = generatedPositionFor(tracer, { source: 'input.js', line: 42, column: 4, }); assert.deepEqual(generated, { line: 1, column: 5, }); ``` We also provide a lower level API to get the actual segment that matches our line and column. Unlike `originalPositionFor`, `traceSegment` uses a 0-base for `line`: ```typescript import { traceSegment } from '@jridgewell/trace-mapping'; // line is 0-base. const traced = traceSegment(tracer, /* line */ 0, /* column */ 5); // Segments are [outputColumn, sourcesIndex, sourceLine, sourceColumn, namesIndex] // Again, line is 0-base and so is sourceLine assert.deepEqual(traced, [5, 0, 41, 4, 0]); ``` ### SectionedSourceMaps The sourcemap spec defines a special `sections` field that's designed to handle concatenation of output code with associated sourcemaps. This type of sourcemap is rarely used (no major build tool produces it), but if you are hand coding a concatenation you may need it. We provide an `AnyMap` helper that can receive either a regular sourcemap or a `SectionedSourceMap` and returns a `TraceMap` instance: ```typescript import { AnyMap } from '@jridgewell/trace-mapping'; const fooOutput = 'foo'; const barOutput = 'bar'; const output = [fooOutput, barOutput].join('\n'); const sectioned = new AnyMap({ version: 3, sections: [ { // 0-base line and column offset: { line: 0, column: 0 }, // fooOutput's sourcemap map: { version: 3, sources: ['foo.js'], names: ['foo'], mappings: 'AAAAA', }, }, { // barOutput's sourcemap will not affect the first line, only the second offset: { line: 1, column: 0 }, map: { version: 3, sources: ['bar.js'], names: ['bar'], mappings: 'AAAAA', }, }, ], }); const traced = originalPositionFor(sectioned, { line: 2, column: 0, }); assert.deepEqual(traced, { source: 'bar.js', line: 1, column: 0, name: 'bar', }); ``` ## Benchmarks ``` node v18.0.0 amp.js.map - 45120 segments Memory Usage: trace-mapping decoded 562400 bytes trace-mapping encoded 5706544 bytes source-map-js 10717664 bytes source-map-0.6.1 17446384 bytes source-map-0.8.0 9701757 bytes Smallest memory usage is trace-mapping decoded Init speed: trace-mapping: decoded JSON input x 180 ops/sec ±0.34% (85 runs sampled) trace-mapping: encoded JSON input x 364 ops/sec ±1.77% (89 runs sampled) trace-mapping: decoded Object input x 3,116 ops/sec ±0.50% (96 runs sampled) trace-mapping: encoded Object input x 410 ops/sec ±2.62% (85 runs sampled) source-map-js: encoded Object input x 84.23 ops/sec ±0.91% (73 runs sampled) source-map-0.6.1: encoded Object input x 37.21 ops/sec ±2.08% (51 runs sampled) Fastest is trace-mapping: decoded Object input Trace speed: trace-mapping: decoded originalPositionFor x 3,952,212 ops/sec ±0.17% (98 runs sampled) trace-mapping: encoded originalPositionFor x 3,487,468 ops/sec ±1.58% (90 runs sampled) source-map-js: encoded originalPositionFor x 827,730 ops/sec ±0.78% (97 runs sampled) source-map-0.6.1: encoded originalPositionFor x 748,991 ops/sec ±0.53% (94 runs sampled) source-map-0.8.0: encoded originalPositionFor x 2,532,894 ops/sec ±0.57% (95 runs sampled) Fastest is trace-mapping: decoded originalPositionFor *** babel.min.js.map - 347793 segments Memory Usage: trace-mapping decoded 89832 bytes trace-mapping encoded 35474640 bytes source-map-js 51257176 bytes source-map-0.6.1 63515664 bytes source-map-0.8.0 42933752 bytes Smallest memory usage is trace-mapping decoded Init speed: trace-mapping: decoded JSON input x 15.41 ops/sec ±8.65% (34 runs sampled) trace-mapping: encoded JSON input x 28.20 ops/sec ±12.87% (42 runs sampled) trace-mapping: decoded Object input x 964 ops/sec ±0.36% (99 runs sampled) trace-mapping: encoded Object input x 31.77 ops/sec ±13.79% (45 runs sampled) source-map-js: encoded Object input x 6.45 ops/sec ±5.16% (21 runs sampled) source-map-0.6.1: encoded Object input x 4.07 ops/sec ±5.24% (15 runs sampled) Fastest is trace-mapping: decoded Object input Trace speed: trace-mapping: decoded originalPositionFor x 7,183,038 ops/sec ±0.58% (95 runs sampled) trace-mapping: encoded originalPositionFor x 5,192,185 ops/sec ±0.41% (100 runs sampled) source-map-js: encoded originalPositionFor x 4,259,489 ops/sec ±0.79% (94 runs sampled) source-map-0.6.1: encoded originalPositionFor x 3,742,629 ops/sec ±0.71% (95 runs sampled) source-map-0.8.0: encoded originalPositionFor x 6,270,211 ops/sec ±0.64% (94 runs sampled) Fastest is trace-mapping: decoded originalPositionFor *** preact.js.map - 1992 segments Memory Usage: trace-mapping decoded 37128 bytes trace-mapping encoded 247280 bytes source-map-js 1143536 bytes source-map-0.6.1 1290992 bytes source-map-0.8.0 96544 bytes Smallest memory usage is trace-mapping decoded Init speed: trace-mapping: decoded JSON input x 3,483 ops/sec ±0.30% (98 runs sampled) trace-mapping: encoded JSON input x 6,092 ops/sec ±0.18% (97 runs sampled) trace-mapping: decoded Object input x 249,076 ops/sec ±0.24% (98 runs sampled) trace-mapping: encoded Object input x 14,555 ops/sec ±0.48% (100 runs sampled) source-map-js: encoded Object input x 2,447 ops/sec ±0.36% (99 runs sampled) source-map-0.6.1: encoded Object input x 1,201 ops/sec ±0.57% (96 runs sampled) Fastest is trace-mapping: decoded Object input Trace speed: trace-mapping: decoded originalPositionFor x 7,620,192 ops/sec ±0.09% (99 runs sampled) trace-mapping: encoded originalPositionFor x 6,872,554 ops/sec ±0.30% (97 runs sampled) source-map-js: encoded originalPositionFor x 2,489,570 ops/sec ±0.35% (94 runs sampled) source-map-0.6.1: encoded originalPositionFor x 1,698,633 ops/sec ±0.28% (98 runs sampled) source-map-0.8.0: encoded originalPositionFor x 4,015,644 ops/sec ±0.22% (98 runs sampled) Fastest is trace-mapping: decoded originalPositionFor *** react.js.map - 5726 segments Memory Usage: trace-mapping decoded 16176 bytes trace-mapping encoded 681552 bytes source-map-js 2418352 bytes source-map-0.6.1 2443672 bytes source-map-0.8.0 111768 bytes Smallest memory usage is trace-mapping decoded Init speed: trace-mapping: decoded JSON input x 1,720 ops/sec ±0.34% (98 runs sampled) trace-mapping: encoded JSON input x 4,406 ops/sec ±0.35% (100 runs sampled) trace-mapping: decoded Object input x 92,122 ops/sec ±0.10% (99 runs sampled) trace-mapping: encoded Object input x 5,385 ops/sec ±0.37% (99 runs sampled) source-map-js: encoded Object input x 794 ops/sec ±0.40% (98 runs sampled) source-map-0.6.1: encoded Object input x 416 ops/sec ±0.54% (91 runs sampled) Fastest is trace-mapping: decoded Object input Trace speed: trace-mapping: decoded originalPositionFor x 32,759,519 ops/sec ±0.33% (100 runs sampled) trace-mapping: encoded originalPositionFor x 31,116,306 ops/sec ±0.33% (97 runs sampled) source-map-js: encoded originalPositionFor x 17,458,435 ops/sec ±0.44% (97 runs sampled) source-map-0.6.1: encoded originalPositionFor x 12,687,097 ops/sec ±0.43% (95 runs sampled) source-map-0.8.0: encoded originalPositionFor x 23,538,275 ops/sec ±0.38% (95 runs sampled) Fastest is trace-mapping: decoded originalPositionFor ``` [source-map]: https://www.npmjs.com/package/source-map dist/trace-mapping.mjs 0000644 00000052337 15120157341 0010762 0 ustar 00 import { encode, decode } from '@jridgewell/sourcemap-codec'; import resolveUri from '@jridgewell/resolve-uri'; function resolve(input, base) { // The base is always treated as a directory, if it's not empty. // https://github.com/mozilla/source-map/blob/8cb3ee57/lib/util.js#L327 // https://github.com/chromium/chromium/blob/da4adbb3/third_party/blink/renderer/devtools/front_end/sdk/SourceMap.js#L400-L401 if (base && !base.endsWith('/')) base += '/'; return resolveUri(input, base); } /** * Removes everything after the last "/", but leaves the slash. */ function stripFilename(path) { if (!path) return ''; const index = path.lastIndexOf('/'); return path.slice(0, index + 1); } const COLUMN = 0; const SOURCES_INDEX = 1; const SOURCE_LINE = 2; const SOURCE_COLUMN = 3; const NAMES_INDEX = 4; const REV_GENERATED_LINE = 1; const REV_GENERATED_COLUMN = 2; function maybeSort(mappings, owned) { const unsortedIndex = nextUnsortedSegmentLine(mappings, 0); if (unsortedIndex === mappings.length) return mappings; // If we own the array (meaning we parsed it from JSON), then we're free to directly mutate it. If // not, we do not want to modify the consumer's input array. if (!owned) mappings = mappings.slice(); for (let i = unsortedIndex; i < mappings.length; i = nextUnsortedSegmentLine(mappings, i + 1)) { mappings[i] = sortSegments(mappings[i], owned); } return mappings; } function nextUnsortedSegmentLine(mappings, start) { for (let i = start; i < mappings.length; i++) { if (!isSorted(mappings[i])) return i; } return mappings.length; } function isSorted(line) { for (let j = 1; j < line.length; j++) { if (line[j][COLUMN] < line[j - 1][COLUMN]) { return false; } } return true; } function sortSegments(line, owned) { if (!owned) line = line.slice(); return line.sort(sortComparator); } function sortComparator(a, b) { return a[COLUMN] - b[COLUMN]; } let found = false; /** * A binary search implementation that returns the index if a match is found. * If no match is found, then the left-index (the index associated with the item that comes just * before the desired index) is returned. To maintain proper sort order, a splice would happen at * the next index: * * ```js * const array = [1, 3]; * const needle = 2; * const index = binarySearch(array, needle, (item, needle) => item - needle); * * assert.equal(index, 0); * array.splice(index + 1, 0, needle); * assert.deepEqual(array, [1, 2, 3]); * ``` */ function binarySearch(haystack, needle, low, high) { while (low <= high) { const mid = low + ((high - low) >> 1); const cmp = haystack[mid][COLUMN] - needle; if (cmp === 0) { found = true; return mid; } if (cmp < 0) { low = mid + 1; } else { high = mid - 1; } } found = false; return low - 1; } function upperBound(haystack, needle, index) { for (let i = index + 1; i < haystack.length; index = i++) { if (haystack[i][COLUMN] !== needle) break; } return index; } function lowerBound(haystack, needle, index) { for (let i = index - 1; i >= 0; index = i--) { if (haystack[i][COLUMN] !== needle) break; } return index; } function memoizedState() { return { lastKey: -1, lastNeedle: -1, lastIndex: -1, }; } /** * This overly complicated beast is just to record the last tested line/column and the resulting * index, allowing us to skip a few tests if mappings are monotonically increasing. */ function memoizedBinarySearch(haystack, needle, state, key) { const { lastKey, lastNeedle, lastIndex } = state; let low = 0; let high = haystack.length - 1; if (key === lastKey) { if (needle === lastNeedle) { found = lastIndex !== -1 && haystack[lastIndex][COLUMN] === needle; return lastIndex; } if (needle >= lastNeedle) { // lastIndex may be -1 if the previous needle was not found. low = lastIndex === -1 ? 0 : lastIndex; } else { high = lastIndex; } } state.lastKey = key; state.lastNeedle = needle; return (state.lastIndex = binarySearch(haystack, needle, low, high)); } // Rebuilds the original source files, with mappings that are ordered by source line/column instead // of generated line/column. function buildBySources(decoded, memos) { const sources = memos.map(buildNullArray); for (let i = 0; i < decoded.length; i++) { const line = decoded[i]; for (let j = 0; j < line.length; j++) { const seg = line[j]; if (seg.length === 1) continue; const sourceIndex = seg[SOURCES_INDEX]; const sourceLine = seg[SOURCE_LINE]; const sourceColumn = seg[SOURCE_COLUMN]; const originalSource = sources[sourceIndex]; const originalLine = (originalSource[sourceLine] || (originalSource[sourceLine] = [])); const memo = memos[sourceIndex]; // The binary search either found a match, or it found the left-index just before where the // segment should go. Either way, we want to insert after that. And there may be multiple // generated segments associated with an original location, so there may need to move several // indexes before we find where we need to insert. const index = upperBound(originalLine, sourceColumn, memoizedBinarySearch(originalLine, sourceColumn, memo, sourceLine)); insert(originalLine, (memo.lastIndex = index + 1), [sourceColumn, i, seg[COLUMN]]); } } return sources; } function insert(array, index, value) { for (let i = array.length; i > index; i--) { array[i] = array[i - 1]; } array[index] = value; } // Null arrays allow us to use ordered index keys without actually allocating contiguous memory like // a real array. We use a null-prototype object to avoid prototype pollution and deoptimizations. // Numeric properties on objects are magically sorted in ascending order by the engine regardless of // the insertion order. So, by setting any numeric keys, even out of order, we'll get ascending // order when iterating with for-in. function buildNullArray() { return { __proto__: null }; } const AnyMap = function (map, mapUrl) { const parsed = typeof map === 'string' ? JSON.parse(map) : map; if (!('sections' in parsed)) return new TraceMap(parsed, mapUrl); const mappings = []; const sources = []; const sourcesContent = []; const names = []; recurse(parsed, mapUrl, mappings, sources, sourcesContent, names, 0, 0, Infinity, Infinity); const joined = { version: 3, file: parsed.file, names, sources, sourcesContent, mappings, }; return presortedDecodedMap(joined); }; function recurse(input, mapUrl, mappings, sources, sourcesContent, names, lineOffset, columnOffset, stopLine, stopColumn) { const { sections } = input; for (let i = 0; i < sections.length; i++) { const { map, offset } = sections[i]; let sl = stopLine; let sc = stopColumn; if (i + 1 < sections.length) { const nextOffset = sections[i + 1].offset; sl = Math.min(stopLine, lineOffset + nextOffset.line); if (sl === stopLine) { sc = Math.min(stopColumn, columnOffset + nextOffset.column); } else if (sl < stopLine) { sc = columnOffset + nextOffset.column; } } addSection(map, mapUrl, mappings, sources, sourcesContent, names, lineOffset + offset.line, columnOffset + offset.column, sl, sc); } } function addSection(input, mapUrl, mappings, sources, sourcesContent, names, lineOffset, columnOffset, stopLine, stopColumn) { if ('sections' in input) return recurse(...arguments); const map = new TraceMap(input, mapUrl); const sourcesOffset = sources.length; const namesOffset = names.length; const decoded = decodedMappings(map); const { resolvedSources, sourcesContent: contents } = map; append(sources, resolvedSources); append(names, map.names); if (contents) append(sourcesContent, contents); else for (let i = 0; i < resolvedSources.length; i++) sourcesContent.push(null); for (let i = 0; i < decoded.length; i++) { const lineI = lineOffset + i; // We can only add so many lines before we step into the range that the next section's map // controls. When we get to the last line, then we'll start checking the segments to see if // they've crossed into the column range. But it may not have any columns that overstep, so we // still need to check that we don't overstep lines, too. if (lineI > stopLine) return; // The out line may already exist in mappings (if we're continuing the line started by a // previous section). Or, we may have jumped ahead several lines to start this section. const out = getLine(mappings, lineI); // On the 0th loop, the section's column offset shifts us forward. On all other lines (since the // map can be multiple lines), it doesn't. const cOffset = i === 0 ? columnOffset : 0; const line = decoded[i]; for (let j = 0; j < line.length; j++) { const seg = line[j]; const column = cOffset + seg[COLUMN]; // If this segment steps into the column range that the next section's map controls, we need // to stop early. if (lineI === stopLine && column >= stopColumn) return; if (seg.length === 1) { out.push([column]); continue; } const sourcesIndex = sourcesOffset + seg[SOURCES_INDEX]; const sourceLine = seg[SOURCE_LINE]; const sourceColumn = seg[SOURCE_COLUMN]; out.push(seg.length === 4 ? [column, sourcesIndex, sourceLine, sourceColumn] : [column, sourcesIndex, sourceLine, sourceColumn, namesOffset + seg[NAMES_INDEX]]); } } } function append(arr, other) { for (let i = 0; i < other.length; i++) arr.push(other[i]); } function getLine(arr, index) { for (let i = arr.length; i <= index; i++) arr[i] = []; return arr[index]; } const LINE_GTR_ZERO = '`line` must be greater than 0 (lines start at line 1)'; const COL_GTR_EQ_ZERO = '`column` must be greater than or equal to 0 (columns start at column 0)'; const LEAST_UPPER_BOUND = -1; const GREATEST_LOWER_BOUND = 1; /** * Returns the encoded (VLQ string) form of the SourceMap's mappings field. */ let encodedMappings; /** * Returns the decoded (array of lines of segments) form of the SourceMap's mappings field. */ let decodedMappings; /** * A low-level API to find the segment associated with a generated line/column (think, from a * stack trace). Line and column here are 0-based, unlike `originalPositionFor`. */ let traceSegment; /** * A higher-level API to find the source/line/column associated with a generated line/column * (think, from a stack trace). Line is 1-based, but column is 0-based, due to legacy behavior in * `source-map` library. */ let originalPositionFor; /** * Finds the generated line/column position of the provided source/line/column source position. */ let generatedPositionFor; /** * Finds all generated line/column positions of the provided source/line/column source position. */ let allGeneratedPositionsFor; /** * Iterates each mapping in generated position order. */ let eachMapping; /** * Retrieves the source content for a particular source, if its found. Returns null if not. */ let sourceContentFor; /** * A helper that skips sorting of the input map's mappings array, which can be expensive for larger * maps. */ let presortedDecodedMap; /** * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects * a sourcemap, or to JSON.stringify. */ let decodedMap; /** * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects * a sourcemap, or to JSON.stringify. */ let encodedMap; class TraceMap { constructor(map, mapUrl) { const isString = typeof map === 'string'; if (!isString && map._decodedMemo) return map; const parsed = (isString ? JSON.parse(map) : map); const { version, file, names, sourceRoot, sources, sourcesContent } = parsed; this.version = version; this.file = file; this.names = names; this.sourceRoot = sourceRoot; this.sources = sources; this.sourcesContent = sourcesContent; const from = resolve(sourceRoot || '', stripFilename(mapUrl)); this.resolvedSources = sources.map((s) => resolve(s || '', from)); const { mappings } = parsed; if (typeof mappings === 'string') { this._encoded = mappings; this._decoded = undefined; } else { this._encoded = undefined; this._decoded = maybeSort(mappings, isString); } this._decodedMemo = memoizedState(); this._bySources = undefined; this._bySourceMemos = undefined; } } (() => { encodedMappings = (map) => { var _a; return ((_a = map._encoded) !== null && _a !== void 0 ? _a : (map._encoded = encode(map._decoded))); }; decodedMappings = (map) => { return (map._decoded || (map._decoded = decode(map._encoded))); }; traceSegment = (map, line, column) => { const decoded = decodedMappings(map); // It's common for parent source maps to have pointers to lines that have no // mapping (like a "//# sourceMappingURL=") at the end of the child file. if (line >= decoded.length) return null; const segments = decoded[line]; const index = traceSegmentInternal(segments, map._decodedMemo, line, column, GREATEST_LOWER_BOUND); return index === -1 ? null : segments[index]; }; originalPositionFor = (map, { line, column, bias }) => { line--; if (line < 0) throw new Error(LINE_GTR_ZERO); if (column < 0) throw new Error(COL_GTR_EQ_ZERO); const decoded = decodedMappings(map); // It's common for parent source maps to have pointers to lines that have no // mapping (like a "//# sourceMappingURL=") at the end of the child file. if (line >= decoded.length) return OMapping(null, null, null, null); const segments = decoded[line]; const index = traceSegmentInternal(segments, map._decodedMemo, line, column, bias || GREATEST_LOWER_BOUND); if (index === -1) return OMapping(null, null, null, null); const segment = segments[index]; if (segment.length === 1) return OMapping(null, null, null, null); const { names, resolvedSources } = map; return OMapping(resolvedSources[segment[SOURCES_INDEX]], segment[SOURCE_LINE] + 1, segment[SOURCE_COLUMN], segment.length === 5 ? names[segment[NAMES_INDEX]] : null); }; allGeneratedPositionsFor = (map, { source, line, column, bias }) => { // SourceMapConsumer uses LEAST_UPPER_BOUND for some reason, so we follow suit. return generatedPosition(map, source, line, column, bias || LEAST_UPPER_BOUND, true); }; generatedPositionFor = (map, { source, line, column, bias }) => { return generatedPosition(map, source, line, column, bias || GREATEST_LOWER_BOUND, false); }; eachMapping = (map, cb) => { const decoded = decodedMappings(map); const { names, resolvedSources } = map; for (let i = 0; i < decoded.length; i++) { const line = decoded[i]; for (let j = 0; j < line.length; j++) { const seg = line[j]; const generatedLine = i + 1; const generatedColumn = seg[0]; let source = null; let originalLine = null; let originalColumn = null; let name = null; if (seg.length !== 1) { source = resolvedSources[seg[1]]; originalLine = seg[2] + 1; originalColumn = seg[3]; } if (seg.length === 5) name = names[seg[4]]; cb({ generatedLine, generatedColumn, source, originalLine, originalColumn, name, }); } } }; sourceContentFor = (map, source) => { const { sources, resolvedSources, sourcesContent } = map; if (sourcesContent == null) return null; let index = sources.indexOf(source); if (index === -1) index = resolvedSources.indexOf(source); return index === -1 ? null : sourcesContent[index]; }; presortedDecodedMap = (map, mapUrl) => { const tracer = new TraceMap(clone(map, []), mapUrl); tracer._decoded = map.mappings; return tracer; }; decodedMap = (map) => { return clone(map, decodedMappings(map)); }; encodedMap = (map) => { return clone(map, encodedMappings(map)); }; function generatedPosition(map, source, line, column, bias, all) { line--; if (line < 0) throw new Error(LINE_GTR_ZERO); if (column < 0) throw new Error(COL_GTR_EQ_ZERO); const { sources, resolvedSources } = map; let sourceIndex = sources.indexOf(source); if (sourceIndex === -1) sourceIndex = resolvedSources.indexOf(source); if (sourceIndex === -1) return all ? [] : GMapping(null, null); const generated = (map._bySources || (map._bySources = buildBySources(decodedMappings(map), (map._bySourceMemos = sources.map(memoizedState))))); const segments = generated[sourceIndex][line]; if (segments == null) return all ? [] : GMapping(null, null); const memo = map._bySourceMemos[sourceIndex]; if (all) return sliceGeneratedPositions(segments, memo, line, column, bias); const index = traceSegmentInternal(segments, memo, line, column, bias); if (index === -1) return GMapping(null, null); const segment = segments[index]; return GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]); } })(); function clone(map, mappings) { return { version: map.version, file: map.file, names: map.names, sourceRoot: map.sourceRoot, sources: map.sources, sourcesContent: map.sourcesContent, mappings, }; } function OMapping(source, line, column, name) { return { source, line, column, name }; } function GMapping(line, column) { return { line, column }; } function traceSegmentInternal(segments, memo, line, column, bias) { let index = memoizedBinarySearch(segments, column, memo, line); if (found) { index = (bias === LEAST_UPPER_BOUND ? upperBound : lowerBound)(segments, column, index); } else if (bias === LEAST_UPPER_BOUND) index++; if (index === -1 || index === segments.length) return -1; return index; } function sliceGeneratedPositions(segments, memo, line, column, bias) { let min = traceSegmentInternal(segments, memo, line, column, GREATEST_LOWER_BOUND); // We ignored the bias when tracing the segment so that we're guarnateed to find the first (in // insertion order) segment that matched. Even if we did respect the bias when tracing, we would // still need to call `lowerBound()` to find the first segment, which is slower than just looking // for the GREATEST_LOWER_BOUND to begin with. The only difference that matters for us is when the // binary search didn't match, in which case GREATEST_LOWER_BOUND just needs to increment to // match LEAST_UPPER_BOUND. if (!found && bias === LEAST_UPPER_BOUND) min++; if (min === -1 || min === segments.length) return []; // We may have found the segment that started at an earlier column. If this is the case, then we // need to slice all generated segments that match _that_ column, because all such segments span // to our desired column. const matchedColumn = found ? column : segments[min][COLUMN]; // The binary search is not guaranteed to find the lower bound when a match wasn't found. if (!found) min = lowerBound(segments, matchedColumn, min); const max = upperBound(segments, matchedColumn, min); const result = []; for (; min <= max; min++) { const segment = segments[min]; result.push(GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN])); } return result; } export { AnyMap, GREATEST_LOWER_BOUND, LEAST_UPPER_BOUND, TraceMap, allGeneratedPositionsFor, decodedMap, decodedMappings, eachMapping, encodedMap, encodedMappings, generatedPositionFor, originalPositionFor, presortedDecodedMap, sourceContentFor, traceSegment }; //# sourceMappingURL=trace-mapping.mjs.map dist/trace-mapping.mjs.map 0000644 00000134777 15120157341 0011547 0 ustar 00 {"version":3,"file":"trace-mapping.mjs","sources":["../src/resolve.ts","../src/strip-filename.ts","../src/sourcemap-segment.ts","../src/sort.ts","../src/binary-search.ts","../src/by-source.ts","../src/any-map.ts","../src/trace-mapping.ts"],"sourcesContent":["import resolveUri from '@jridgewell/resolve-uri';\n\nexport default function resolve(input: string, base: string | undefined): string {\n // The base is always treated as a directory, if it's not empty.\n // https://github.com/mozilla/source-map/blob/8cb3ee57/lib/util.js#L327\n // https://github.com/chromium/chromium/blob/da4adbb3/third_party/blink/renderer/devtools/front_end/sdk/SourceMap.js#L400-L401\n if (base && !base.endsWith('/')) base += '/';\n\n return resolveUri(input, base);\n}\n","/**\n * Removes everything after the last \"/\", but leaves the slash.\n */\nexport default function stripFilename(path: string | undefined | null): string {\n if (!path) return '';\n const index = path.lastIndexOf('/');\n return path.slice(0, index + 1);\n}\n","type GeneratedColumn = number;\ntype SourcesIndex = number;\ntype SourceLine = number;\ntype SourceColumn = number;\ntype NamesIndex = number;\n\ntype GeneratedLine = number;\n\nexport type SourceMapSegment =\n | [GeneratedColumn]\n | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn]\n | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn, NamesIndex];\n\nexport type ReverseSegment = [SourceColumn, GeneratedLine, GeneratedColumn];\n\nexport const COLUMN = 0;\nexport const SOURCES_INDEX = 1;\nexport const SOURCE_LINE = 2;\nexport const SOURCE_COLUMN = 3;\nexport const NAMES_INDEX = 4;\n\nexport const REV_GENERATED_LINE = 1;\nexport const REV_GENERATED_COLUMN = 2;\n","import { COLUMN } from './sourcemap-segment';\n\nimport type { SourceMapSegment } from './sourcemap-segment';\n\nexport default function maybeSort(\n mappings: SourceMapSegment[][],\n owned: boolean,\n): SourceMapSegment[][] {\n const unsortedIndex = nextUnsortedSegmentLine(mappings, 0);\n if (unsortedIndex === mappings.length) return mappings;\n\n // If we own the array (meaning we parsed it from JSON), then we're free to directly mutate it. If\n // not, we do not want to modify the consumer's input array.\n if (!owned) mappings = mappings.slice();\n\n for (let i = unsortedIndex; i < mappings.length; i = nextUnsortedSegmentLine(mappings, i + 1)) {\n mappings[i] = sortSegments(mappings[i], owned);\n }\n return mappings;\n}\n\nfunction nextUnsortedSegmentLine(mappings: SourceMapSegment[][], start: number): number {\n for (let i = start; i < mappings.length; i++) {\n if (!isSorted(mappings[i])) return i;\n }\n return mappings.length;\n}\n\nfunction isSorted(line: SourceMapSegment[]): boolean {\n for (let j = 1; j < line.length; j++) {\n if (line[j][COLUMN] < line[j - 1][COLUMN]) {\n return false;\n }\n }\n return true;\n}\n\nfunction sortSegments(line: SourceMapSegment[], owned: boolean): SourceMapSegment[] {\n if (!owned) line = line.slice();\n return line.sort(sortComparator);\n}\n\nfunction sortComparator(a: SourceMapSegment, b: SourceMapSegment): number {\n return a[COLUMN] - b[COLUMN];\n}\n","import type { SourceMapSegment, ReverseSegment } from './sourcemap-segment';\nimport { COLUMN } from './sourcemap-segment';\n\nexport type MemoState = {\n lastKey: number;\n lastNeedle: number;\n lastIndex: number;\n};\n\nexport let found = false;\n\n/**\n * A binary search implementation that returns the index if a match is found.\n * If no match is found, then the left-index (the index associated with the item that comes just\n * before the desired index) is returned. To maintain proper sort order, a splice would happen at\n * the next index:\n *\n * ```js\n * const array = [1, 3];\n * const needle = 2;\n * const index = binarySearch(array, needle, (item, needle) => item - needle);\n *\n * assert.equal(index, 0);\n * array.splice(index + 1, 0, needle);\n * assert.deepEqual(array, [1, 2, 3]);\n * ```\n */\nexport function binarySearch(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n low: number,\n high: number,\n): number {\n while (low <= high) {\n const mid = low + ((high - low) >> 1);\n const cmp = haystack[mid][COLUMN] - needle;\n\n if (cmp === 0) {\n found = true;\n return mid;\n }\n\n if (cmp < 0) {\n low = mid + 1;\n } else {\n high = mid - 1;\n }\n }\n\n found = false;\n return low - 1;\n}\n\nexport function upperBound(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n index: number,\n): number {\n for (let i = index + 1; i < haystack.length; index = i++) {\n if (haystack[i][COLUMN] !== needle) break;\n }\n return index;\n}\n\nexport function lowerBound(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n index: number,\n): number {\n for (let i = index - 1; i >= 0; index = i--) {\n if (haystack[i][COLUMN] !== needle) break;\n }\n return index;\n}\n\nexport function memoizedState(): MemoState {\n return {\n lastKey: -1,\n lastNeedle: -1,\n lastIndex: -1,\n };\n}\n\n/**\n * This overly complicated beast is just to record the last tested line/column and the resulting\n * index, allowing us to skip a few tests if mappings are monotonically increasing.\n */\nexport function memoizedBinarySearch(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n state: MemoState,\n key: number,\n): number {\n const { lastKey, lastNeedle, lastIndex } = state;\n\n let low = 0;\n let high = haystack.length - 1;\n if (key === lastKey) {\n if (needle === lastNeedle) {\n found = lastIndex !== -1 && haystack[lastIndex][COLUMN] === needle;\n return lastIndex;\n }\n\n if (needle >= lastNeedle) {\n // lastIndex may be -1 if the previous needle was not found.\n low = lastIndex === -1 ? 0 : lastIndex;\n } else {\n high = lastIndex;\n }\n }\n state.lastKey = key;\n state.lastNeedle = needle;\n\n return (state.lastIndex = binarySearch(haystack, needle, low, high));\n}\n","import { COLUMN, SOURCES_INDEX, SOURCE_LINE, SOURCE_COLUMN } from './sourcemap-segment';\nimport { memoizedBinarySearch, upperBound } from './binary-search';\n\nimport type { ReverseSegment, SourceMapSegment } from './sourcemap-segment';\nimport type { MemoState } from './binary-search';\n\nexport type Source = {\n __proto__: null;\n [line: number]: Exclude<ReverseSegment, [number]>[];\n};\n\n// Rebuilds the original source files, with mappings that are ordered by source line/column instead\n// of generated line/column.\nexport default function buildBySources(\n decoded: readonly SourceMapSegment[][],\n memos: MemoState[],\n): Source[] {\n const sources: Source[] = memos.map(buildNullArray);\n\n for (let i = 0; i < decoded.length; i++) {\n const line = decoded[i];\n for (let j = 0; j < line.length; j++) {\n const seg = line[j];\n if (seg.length === 1) continue;\n\n const sourceIndex = seg[SOURCES_INDEX];\n const sourceLine = seg[SOURCE_LINE];\n const sourceColumn = seg[SOURCE_COLUMN];\n const originalSource = sources[sourceIndex];\n const originalLine = (originalSource[sourceLine] ||= []);\n const memo = memos[sourceIndex];\n\n // The binary search either found a match, or it found the left-index just before where the\n // segment should go. Either way, we want to insert after that. And there may be multiple\n // generated segments associated with an original location, so there may need to move several\n // indexes before we find where we need to insert.\n const index = upperBound(\n originalLine,\n sourceColumn,\n memoizedBinarySearch(originalLine, sourceColumn, memo, sourceLine),\n );\n\n insert(originalLine, (memo.lastIndex = index + 1), [sourceColumn, i, seg[COLUMN]]);\n }\n }\n\n return sources;\n}\n\nfunction insert<T>(array: T[], index: number, value: T) {\n for (let i = array.length; i > index; i--) {\n array[i] = array[i - 1];\n }\n array[index] = value;\n}\n\n// Null arrays allow us to use ordered index keys without actually allocating contiguous memory like\n// a real array. We use a null-prototype object to avoid prototype pollution and deoptimizations.\n// Numeric properties on objects are magically sorted in ascending order by the engine regardless of\n// the insertion order. So, by setting any numeric keys, even out of order, we'll get ascending\n// order when iterating with for-in.\nfunction buildNullArray<T extends { __proto__: null }>(): T {\n return { __proto__: null } as T;\n}\n","import { TraceMap, presortedDecodedMap, decodedMappings } from './trace-mapping';\nimport {\n COLUMN,\n SOURCES_INDEX,\n SOURCE_LINE,\n SOURCE_COLUMN,\n NAMES_INDEX,\n} from './sourcemap-segment';\n\nimport type {\n Section,\n SectionedSourceMap,\n DecodedSourceMap,\n SectionedSourceMapInput,\n Ro,\n} from './types';\nimport type { SourceMapSegment } from './sourcemap-segment';\n\ntype AnyMap = {\n new (map: SectionedSourceMapInput, mapUrl?: string | null): TraceMap;\n (map: SectionedSourceMapInput, mapUrl?: string | null): TraceMap;\n};\n\nexport const AnyMap: AnyMap = function (map, mapUrl) {\n const parsed =\n typeof map === 'string' ? (JSON.parse(map) as Exclude<SectionedSourceMapInput, string>) : map;\n\n if (!('sections' in parsed)) return new TraceMap(parsed, mapUrl);\n\n const mappings: SourceMapSegment[][] = [];\n const sources: string[] = [];\n const sourcesContent: (string | null)[] = [];\n const names: string[] = [];\n\n recurse(parsed, mapUrl, mappings, sources, sourcesContent, names, 0, 0, Infinity, Infinity);\n\n const joined: DecodedSourceMap = {\n version: 3,\n file: parsed.file,\n names,\n sources,\n sourcesContent,\n mappings,\n };\n\n return presortedDecodedMap(joined);\n} as AnyMap;\n\nfunction recurse(\n input: Ro<SectionedSourceMap>,\n mapUrl: string | null | undefined,\n mappings: SourceMapSegment[][],\n sources: string[],\n sourcesContent: (string | null)[],\n names: string[],\n lineOffset: number,\n columnOffset: number,\n stopLine: number,\n stopColumn: number,\n) {\n const { sections } = input;\n for (let i = 0; i < sections.length; i++) {\n const { map, offset } = sections[i];\n\n let sl = stopLine;\n let sc = stopColumn;\n if (i + 1 < sections.length) {\n const nextOffset = sections[i + 1].offset;\n sl = Math.min(stopLine, lineOffset + nextOffset.line);\n\n if (sl === stopLine) {\n sc = Math.min(stopColumn, columnOffset + nextOffset.column);\n } else if (sl < stopLine) {\n sc = columnOffset + nextOffset.column;\n }\n }\n\n addSection(\n map,\n mapUrl,\n mappings,\n sources,\n sourcesContent,\n names,\n lineOffset + offset.line,\n columnOffset + offset.column,\n sl,\n sc,\n );\n }\n}\n\nfunction addSection(\n input: Ro<Section['map']>,\n mapUrl: string | null | undefined,\n mappings: SourceMapSegment[][],\n sources: string[],\n sourcesContent: (string | null)[],\n names: string[],\n lineOffset: number,\n columnOffset: number,\n stopLine: number,\n stopColumn: number,\n) {\n if ('sections' in input) return recurse(...(arguments as unknown as Parameters<typeof recurse>));\n\n const map = new TraceMap(input, mapUrl);\n const sourcesOffset = sources.length;\n const namesOffset = names.length;\n const decoded = decodedMappings(map);\n const { resolvedSources, sourcesContent: contents } = map;\n\n append(sources, resolvedSources);\n append(names, map.names);\n if (contents) append(sourcesContent, contents);\n else for (let i = 0; i < resolvedSources.length; i++) sourcesContent.push(null);\n\n for (let i = 0; i < decoded.length; i++) {\n const lineI = lineOffset + i;\n\n // We can only add so many lines before we step into the range that the next section's map\n // controls. When we get to the last line, then we'll start checking the segments to see if\n // they've crossed into the column range. But it may not have any columns that overstep, so we\n // still need to check that we don't overstep lines, too.\n if (lineI > stopLine) return;\n\n // The out line may already exist in mappings (if we're continuing the line started by a\n // previous section). Or, we may have jumped ahead several lines to start this section.\n const out = getLine(mappings, lineI);\n // On the 0th loop, the section's column offset shifts us forward. On all other lines (since the\n // map can be multiple lines), it doesn't.\n const cOffset = i === 0 ? columnOffset : 0;\n\n const line = decoded[i];\n for (let j = 0; j < line.length; j++) {\n const seg = line[j];\n const column = cOffset + seg[COLUMN];\n\n // If this segment steps into the column range that the next section's map controls, we need\n // to stop early.\n if (lineI === stopLine && column >= stopColumn) return;\n\n if (seg.length === 1) {\n out.push([column]);\n continue;\n }\n\n const sourcesIndex = sourcesOffset + seg[SOURCES_INDEX];\n const sourceLine = seg[SOURCE_LINE];\n const sourceColumn = seg[SOURCE_COLUMN];\n out.push(\n seg.length === 4\n ? [column, sourcesIndex, sourceLine, sourceColumn]\n : [column, sourcesIndex, sourceLine, sourceColumn, namesOffset + seg[NAMES_INDEX]],\n );\n }\n }\n}\n\nfunction append<T>(arr: T[], other: T[]) {\n for (let i = 0; i < other.length; i++) arr.push(other[i]);\n}\n\nfunction getLine<T>(arr: T[][], index: number): T[] {\n for (let i = arr.length; i <= index; i++) arr[i] = [];\n return arr[index];\n}\n","import { encode, decode } from '@jridgewell/sourcemap-codec';\n\nimport resolve from './resolve';\nimport stripFilename from './strip-filename';\nimport maybeSort from './sort';\nimport buildBySources from './by-source';\nimport {\n memoizedState,\n memoizedBinarySearch,\n upperBound,\n lowerBound,\n found as bsFound,\n} from './binary-search';\nimport {\n COLUMN,\n SOURCES_INDEX,\n SOURCE_LINE,\n SOURCE_COLUMN,\n NAMES_INDEX,\n REV_GENERATED_LINE,\n REV_GENERATED_COLUMN,\n} from './sourcemap-segment';\n\nimport type { SourceMapSegment, ReverseSegment } from './sourcemap-segment';\nimport type {\n SourceMapV3,\n DecodedSourceMap,\n EncodedSourceMap,\n InvalidOriginalMapping,\n OriginalMapping,\n InvalidGeneratedMapping,\n GeneratedMapping,\n SourceMapInput,\n Needle,\n SourceNeedle,\n SourceMap,\n EachMapping,\n Bias,\n} from './types';\nimport type { Source } from './by-source';\nimport type { MemoState } from './binary-search';\n\nexport type { SourceMapSegment } from './sourcemap-segment';\nexport type {\n SourceMapInput,\n SectionedSourceMapInput,\n DecodedSourceMap,\n EncodedSourceMap,\n SectionedSourceMap,\n InvalidOriginalMapping,\n OriginalMapping as Mapping,\n OriginalMapping,\n InvalidGeneratedMapping,\n GeneratedMapping,\n EachMapping,\n} from './types';\n\nconst LINE_GTR_ZERO = '`line` must be greater than 0 (lines start at line 1)';\nconst COL_GTR_EQ_ZERO = '`column` must be greater than or equal to 0 (columns start at column 0)';\n\nexport const LEAST_UPPER_BOUND = -1;\nexport const GREATEST_LOWER_BOUND = 1;\n\n/**\n * Returns the encoded (VLQ string) form of the SourceMap's mappings field.\n */\nexport let encodedMappings: (map: TraceMap) => EncodedSourceMap['mappings'];\n\n/**\n * Returns the decoded (array of lines of segments) form of the SourceMap's mappings field.\n */\nexport let decodedMappings: (map: TraceMap) => Readonly<DecodedSourceMap['mappings']>;\n\n/**\n * A low-level API to find the segment associated with a generated line/column (think, from a\n * stack trace). Line and column here are 0-based, unlike `originalPositionFor`.\n */\nexport let traceSegment: (\n map: TraceMap,\n line: number,\n column: number,\n) => Readonly<SourceMapSegment> | null;\n\n/**\n * A higher-level API to find the source/line/column associated with a generated line/column\n * (think, from a stack trace). Line is 1-based, but column is 0-based, due to legacy behavior in\n * `source-map` library.\n */\nexport let originalPositionFor: (\n map: TraceMap,\n needle: Needle,\n) => OriginalMapping | InvalidOriginalMapping;\n\n/**\n * Finds the generated line/column position of the provided source/line/column source position.\n */\nexport let generatedPositionFor: (\n map: TraceMap,\n needle: SourceNeedle,\n) => GeneratedMapping | InvalidGeneratedMapping;\n\n/**\n * Finds all generated line/column positions of the provided source/line/column source position.\n */\nexport let allGeneratedPositionsFor: (map: TraceMap, needle: SourceNeedle) => GeneratedMapping[];\n\n/**\n * Iterates each mapping in generated position order.\n */\nexport let eachMapping: (map: TraceMap, cb: (mapping: EachMapping) => void) => void;\n\n/**\n * Retrieves the source content for a particular source, if its found. Returns null if not.\n */\nexport let sourceContentFor: (map: TraceMap, source: string) => string | null;\n\n/**\n * A helper that skips sorting of the input map's mappings array, which can be expensive for larger\n * maps.\n */\nexport let presortedDecodedMap: (map: DecodedSourceMap, mapUrl?: string) => TraceMap;\n\n/**\n * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let decodedMap: (\n map: TraceMap,\n) => Omit<DecodedSourceMap, 'mappings'> & { mappings: readonly SourceMapSegment[][] };\n\n/**\n * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let encodedMap: (map: TraceMap) => EncodedSourceMap;\n\nexport { AnyMap } from './any-map';\n\nexport class TraceMap implements SourceMap {\n declare version: SourceMapV3['version'];\n declare file: SourceMapV3['file'];\n declare names: SourceMapV3['names'];\n declare sourceRoot: SourceMapV3['sourceRoot'];\n declare sources: SourceMapV3['sources'];\n declare sourcesContent: SourceMapV3['sourcesContent'];\n\n declare resolvedSources: string[];\n private declare _encoded: string | undefined;\n\n private declare _decoded: SourceMapSegment[][] | undefined;\n private declare _decodedMemo: MemoState;\n\n private declare _bySources: Source[] | undefined;\n private declare _bySourceMemos: MemoState[] | undefined;\n\n constructor(map: SourceMapInput, mapUrl?: string | null) {\n const isString = typeof map === 'string';\n\n if (!isString && (map as unknown as { _decodedMemo: any })._decodedMemo) return map as TraceMap;\n\n const parsed = (isString ? JSON.parse(map) : map) as DecodedSourceMap | EncodedSourceMap;\n\n const { version, file, names, sourceRoot, sources, sourcesContent } = parsed;\n this.version = version;\n this.file = file;\n this.names = names;\n this.sourceRoot = sourceRoot;\n this.sources = sources;\n this.sourcesContent = sourcesContent;\n\n const from = resolve(sourceRoot || '', stripFilename(mapUrl));\n this.resolvedSources = sources.map((s) => resolve(s || '', from));\n\n const { mappings } = parsed;\n if (typeof mappings === 'string') {\n this._encoded = mappings;\n this._decoded = undefined;\n } else {\n this._encoded = undefined;\n this._decoded = maybeSort(mappings, isString);\n }\n\n this._decodedMemo = memoizedState();\n this._bySources = undefined;\n this._bySourceMemos = undefined;\n }\n\n static {\n encodedMappings = (map) => {\n return (map._encoded ??= encode(map._decoded!));\n };\n\n decodedMappings = (map) => {\n return (map._decoded ||= decode(map._encoded!));\n };\n\n traceSegment = (map, line, column) => {\n const decoded = decodedMappings(map);\n\n // It's common for parent source maps to have pointers to lines that have no\n // mapping (like a \"//# sourceMappingURL=\") at the end of the child file.\n if (line >= decoded.length) return null;\n\n const segments = decoded[line];\n const index = traceSegmentInternal(\n segments,\n map._decodedMemo,\n line,\n column,\n GREATEST_LOWER_BOUND,\n );\n\n return index === -1 ? null : segments[index];\n };\n\n originalPositionFor = (map, { line, column, bias }) => {\n line--;\n if (line < 0) throw new Error(LINE_GTR_ZERO);\n if (column < 0) throw new Error(COL_GTR_EQ_ZERO);\n\n const decoded = decodedMappings(map);\n\n // It's common for parent source maps to have pointers to lines that have no\n // mapping (like a \"//# sourceMappingURL=\") at the end of the child file.\n if (line >= decoded.length) return OMapping(null, null, null, null);\n\n const segments = decoded[line];\n const index = traceSegmentInternal(\n segments,\n map._decodedMemo,\n line,\n column,\n bias || GREATEST_LOWER_BOUND,\n );\n\n if (index === -1) return OMapping(null, null, null, null);\n\n const segment = segments[index];\n if (segment.length === 1) return OMapping(null, null, null, null);\n\n const { names, resolvedSources } = map;\n return OMapping(\n resolvedSources[segment[SOURCES_INDEX]],\n segment[SOURCE_LINE] + 1,\n segment[SOURCE_COLUMN],\n segment.length === 5 ? names[segment[NAMES_INDEX]] : null,\n );\n };\n\n allGeneratedPositionsFor = (map, { source, line, column, bias }) => {\n // SourceMapConsumer uses LEAST_UPPER_BOUND for some reason, so we follow suit.\n return generatedPosition(map, source, line, column, bias || LEAST_UPPER_BOUND, true);\n };\n\n generatedPositionFor = (map, { source, line, column, bias }) => {\n return generatedPosition(map, source, line, column, bias || GREATEST_LOWER_BOUND, false);\n };\n\n eachMapping = (map, cb) => {\n const decoded = decodedMappings(map);\n const { names, resolvedSources } = map;\n\n for (let i = 0; i < decoded.length; i++) {\n const line = decoded[i];\n for (let j = 0; j < line.length; j++) {\n const seg = line[j];\n\n const generatedLine = i + 1;\n const generatedColumn = seg[0];\n let source = null;\n let originalLine = null;\n let originalColumn = null;\n let name = null;\n if (seg.length !== 1) {\n source = resolvedSources[seg[1]];\n originalLine = seg[2] + 1;\n originalColumn = seg[3];\n }\n if (seg.length === 5) name = names[seg[4]];\n\n cb({\n generatedLine,\n generatedColumn,\n source,\n originalLine,\n originalColumn,\n name,\n } as EachMapping);\n }\n }\n };\n\n sourceContentFor = (map, source) => {\n const { sources, resolvedSources, sourcesContent } = map;\n if (sourcesContent == null) return null;\n\n let index = sources.indexOf(source);\n if (index === -1) index = resolvedSources.indexOf(source);\n\n return index === -1 ? null : sourcesContent[index];\n };\n\n presortedDecodedMap = (map, mapUrl) => {\n const tracer = new TraceMap(clone(map, []), mapUrl);\n tracer._decoded = map.mappings;\n return tracer;\n };\n\n decodedMap = (map) => {\n return clone(map, decodedMappings(map));\n };\n\n encodedMap = (map) => {\n return clone(map, encodedMappings(map));\n };\n\n function generatedPosition(\n map: TraceMap,\n source: string,\n line: number,\n column: number,\n bias: Bias,\n all: false,\n ): GeneratedMapping | InvalidGeneratedMapping;\n function generatedPosition(\n map: TraceMap,\n source: string,\n line: number,\n column: number,\n bias: Bias,\n all: true,\n ): GeneratedMapping[];\n function generatedPosition(\n map: TraceMap,\n source: string,\n line: number,\n column: number,\n bias: Bias,\n all: boolean,\n ): GeneratedMapping | InvalidGeneratedMapping | GeneratedMapping[] {\n line--;\n if (line < 0) throw new Error(LINE_GTR_ZERO);\n if (column < 0) throw new Error(COL_GTR_EQ_ZERO);\n\n const { sources, resolvedSources } = map;\n let sourceIndex = sources.indexOf(source);\n if (sourceIndex === -1) sourceIndex = resolvedSources.indexOf(source);\n if (sourceIndex === -1) return all ? [] : GMapping(null, null);\n\n const generated = (map._bySources ||= buildBySources(\n decodedMappings(map),\n (map._bySourceMemos = sources.map(memoizedState)),\n ));\n\n const segments = generated[sourceIndex][line];\n if (segments == null) return all ? [] : GMapping(null, null);\n\n const memo = map._bySourceMemos![sourceIndex];\n\n if (all) return sliceGeneratedPositions(segments, memo, line, column, bias);\n\n const index = traceSegmentInternal(segments, memo, line, column, bias);\n if (index === -1) return GMapping(null, null);\n\n const segment = segments[index];\n return GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]);\n }\n }\n}\n\nfunction clone<T extends string | readonly SourceMapSegment[][]>(\n map: TraceMap | DecodedSourceMap | EncodedSourceMap,\n mappings: T,\n): T extends string ? EncodedSourceMap : DecodedSourceMap {\n return {\n version: map.version,\n file: map.file,\n names: map.names,\n sourceRoot: map.sourceRoot,\n sources: map.sources,\n sourcesContent: map.sourcesContent,\n mappings,\n } as any;\n}\n\nfunction OMapping(source: null, line: null, column: null, name: null): InvalidOriginalMapping;\nfunction OMapping(\n source: string,\n line: number,\n column: number,\n name: string | null,\n): OriginalMapping;\nfunction OMapping(\n source: string | null,\n line: number | null,\n column: number | null,\n name: string | null,\n): OriginalMapping | InvalidOriginalMapping {\n return { source, line, column, name } as any;\n}\n\nfunction GMapping(line: null, column: null): InvalidGeneratedMapping;\nfunction GMapping(line: number, column: number): GeneratedMapping;\nfunction GMapping(\n line: number | null,\n column: number | null,\n): GeneratedMapping | InvalidGeneratedMapping {\n return { line, column } as any;\n}\n\nfunction traceSegmentInternal(\n segments: SourceMapSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): number;\nfunction traceSegmentInternal(\n segments: ReverseSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): number;\nfunction traceSegmentInternal(\n segments: SourceMapSegment[] | ReverseSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): number {\n let index = memoizedBinarySearch(segments, column, memo, line);\n if (bsFound) {\n index = (bias === LEAST_UPPER_BOUND ? upperBound : lowerBound)(segments, column, index);\n } else if (bias === LEAST_UPPER_BOUND) index++;\n\n if (index === -1 || index === segments.length) return -1;\n return index;\n}\n\nfunction sliceGeneratedPositions(\n segments: ReverseSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): GeneratedMapping[] {\n let min = traceSegmentInternal(segments, memo, line, column, GREATEST_LOWER_BOUND);\n\n // We ignored the bias when tracing the segment so that we're guarnateed to find the first (in\n // insertion order) segment that matched. Even if we did respect the bias when tracing, we would\n // still need to call `lowerBound()` to find the first segment, which is slower than just looking\n // for the GREATEST_LOWER_BOUND to begin with. The only difference that matters for us is when the\n // binary search didn't match, in which case GREATEST_LOWER_BOUND just needs to increment to\n // match LEAST_UPPER_BOUND.\n if (!bsFound && bias === LEAST_UPPER_BOUND) min++;\n\n if (min === -1 || min === segments.length) return [];\n\n // We may have found the segment that started at an earlier column. If this is the case, then we\n // need to slice all generated segments that match _that_ column, because all such segments span\n // to our desired column.\n const matchedColumn = bsFound ? column : segments[min][COLUMN];\n\n // The binary search is not guaranteed to find the lower bound when a match wasn't found.\n if (!bsFound) min = lowerBound(segments, matchedColumn, min);\n const max = upperBound(segments, matchedColumn, min);\n\n const result = [];\n for (; min <= max; min++) {\n const segment = segments[min];\n result.push(GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]));\n }\n return 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dist/trace-mapping.umd.js 0000644 00000060433 15120157341 0011365 0 ustar 00 (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@jridgewell/sourcemap-codec'), require('@jridgewell/resolve-uri')) : typeof define === 'function' && define.amd ? define(['exports', '@jridgewell/sourcemap-codec', '@jridgewell/resolve-uri'], factory) : (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.traceMapping = {}, global.sourcemapCodec, global.resolveURI)); })(this, (function (exports, sourcemapCodec, resolveUri) { 'use strict'; function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; } var resolveUri__default = /*#__PURE__*/_interopDefaultLegacy(resolveUri); function resolve(input, base) { // The base is always treated as a directory, if it's not empty. // https://github.com/mozilla/source-map/blob/8cb3ee57/lib/util.js#L327 // https://github.com/chromium/chromium/blob/da4adbb3/third_party/blink/renderer/devtools/front_end/sdk/SourceMap.js#L400-L401 if (base && !base.endsWith('/')) base += '/'; return resolveUri__default["default"](input, base); } /** * Removes everything after the last "/", but leaves the slash. */ function stripFilename(path) { if (!path) return ''; const index = path.lastIndexOf('/'); return path.slice(0, index + 1); } const COLUMN = 0; const SOURCES_INDEX = 1; const SOURCE_LINE = 2; const SOURCE_COLUMN = 3; const NAMES_INDEX = 4; const REV_GENERATED_LINE = 1; const REV_GENERATED_COLUMN = 2; function maybeSort(mappings, owned) { const unsortedIndex = nextUnsortedSegmentLine(mappings, 0); if (unsortedIndex === mappings.length) return mappings; // If we own the array (meaning we parsed it from JSON), then we're free to directly mutate it. If // not, we do not want to modify the consumer's input array. if (!owned) mappings = mappings.slice(); for (let i = unsortedIndex; i < mappings.length; i = nextUnsortedSegmentLine(mappings, i + 1)) { mappings[i] = sortSegments(mappings[i], owned); } return mappings; } function nextUnsortedSegmentLine(mappings, start) { for (let i = start; i < mappings.length; i++) { if (!isSorted(mappings[i])) return i; } return mappings.length; } function isSorted(line) { for (let j = 1; j < line.length; j++) { if (line[j][COLUMN] < line[j - 1][COLUMN]) { return false; } } return true; } function sortSegments(line, owned) { if (!owned) line = line.slice(); return line.sort(sortComparator); } function sortComparator(a, b) { return a[COLUMN] - b[COLUMN]; } let found = false; /** * A binary search implementation that returns the index if a match is found. * If no match is found, then the left-index (the index associated with the item that comes just * before the desired index) is returned. To maintain proper sort order, a splice would happen at * the next index: * * ```js * const array = [1, 3]; * const needle = 2; * const index = binarySearch(array, needle, (item, needle) => item - needle); * * assert.equal(index, 0); * array.splice(index + 1, 0, needle); * assert.deepEqual(array, [1, 2, 3]); * ``` */ function binarySearch(haystack, needle, low, high) { while (low <= high) { const mid = low + ((high - low) >> 1); const cmp = haystack[mid][COLUMN] - needle; if (cmp === 0) { found = true; return mid; } if (cmp < 0) { low = mid + 1; } else { high = mid - 1; } } found = false; return low - 1; } function upperBound(haystack, needle, index) { for (let i = index + 1; i < haystack.length; index = i++) { if (haystack[i][COLUMN] !== needle) break; } return index; } function lowerBound(haystack, needle, index) { for (let i = index - 1; i >= 0; index = i--) { if (haystack[i][COLUMN] !== needle) break; } return index; } function memoizedState() { return { lastKey: -1, lastNeedle: -1, lastIndex: -1, }; } /** * This overly complicated beast is just to record the last tested line/column and the resulting * index, allowing us to skip a few tests if mappings are monotonically increasing. */ function memoizedBinarySearch(haystack, needle, state, key) { const { lastKey, lastNeedle, lastIndex } = state; let low = 0; let high = haystack.length - 1; if (key === lastKey) { if (needle === lastNeedle) { found = lastIndex !== -1 && haystack[lastIndex][COLUMN] === needle; return lastIndex; } if (needle >= lastNeedle) { // lastIndex may be -1 if the previous needle was not found. low = lastIndex === -1 ? 0 : lastIndex; } else { high = lastIndex; } } state.lastKey = key; state.lastNeedle = needle; return (state.lastIndex = binarySearch(haystack, needle, low, high)); } // Rebuilds the original source files, with mappings that are ordered by source line/column instead // of generated line/column. function buildBySources(decoded, memos) { const sources = memos.map(buildNullArray); for (let i = 0; i < decoded.length; i++) { const line = decoded[i]; for (let j = 0; j < line.length; j++) { const seg = line[j]; if (seg.length === 1) continue; const sourceIndex = seg[SOURCES_INDEX]; const sourceLine = seg[SOURCE_LINE]; const sourceColumn = seg[SOURCE_COLUMN]; const originalSource = sources[sourceIndex]; const originalLine = (originalSource[sourceLine] || (originalSource[sourceLine] = [])); const memo = memos[sourceIndex]; // The binary search either found a match, or it found the left-index just before where the // segment should go. Either way, we want to insert after that. And there may be multiple // generated segments associated with an original location, so there may need to move several // indexes before we find where we need to insert. const index = upperBound(originalLine, sourceColumn, memoizedBinarySearch(originalLine, sourceColumn, memo, sourceLine)); insert(originalLine, (memo.lastIndex = index + 1), [sourceColumn, i, seg[COLUMN]]); } } return sources; } function insert(array, index, value) { for (let i = array.length; i > index; i--) { array[i] = array[i - 1]; } array[index] = value; } // Null arrays allow us to use ordered index keys without actually allocating contiguous memory like // a real array. We use a null-prototype object to avoid prototype pollution and deoptimizations. // Numeric properties on objects are magically sorted in ascending order by the engine regardless of // the insertion order. So, by setting any numeric keys, even out of order, we'll get ascending // order when iterating with for-in. function buildNullArray() { return { __proto__: null }; } const AnyMap = function (map, mapUrl) { const parsed = typeof map === 'string' ? JSON.parse(map) : map; if (!('sections' in parsed)) return new TraceMap(parsed, mapUrl); const mappings = []; const sources = []; const sourcesContent = []; const names = []; recurse(parsed, mapUrl, mappings, sources, sourcesContent, names, 0, 0, Infinity, Infinity); const joined = { version: 3, file: parsed.file, names, sources, sourcesContent, mappings, }; return exports.presortedDecodedMap(joined); }; function recurse(input, mapUrl, mappings, sources, sourcesContent, names, lineOffset, columnOffset, stopLine, stopColumn) { const { sections } = input; for (let i = 0; i < sections.length; i++) { const { map, offset } = sections[i]; let sl = stopLine; let sc = stopColumn; if (i + 1 < sections.length) { const nextOffset = sections[i + 1].offset; sl = Math.min(stopLine, lineOffset + nextOffset.line); if (sl === stopLine) { sc = Math.min(stopColumn, columnOffset + nextOffset.column); } else if (sl < stopLine) { sc = columnOffset + nextOffset.column; } } addSection(map, mapUrl, mappings, sources, sourcesContent, names, lineOffset + offset.line, columnOffset + offset.column, sl, sc); } } function addSection(input, mapUrl, mappings, sources, sourcesContent, names, lineOffset, columnOffset, stopLine, stopColumn) { if ('sections' in input) return recurse(...arguments); const map = new TraceMap(input, mapUrl); const sourcesOffset = sources.length; const namesOffset = names.length; const decoded = exports.decodedMappings(map); const { resolvedSources, sourcesContent: contents } = map; append(sources, resolvedSources); append(names, map.names); if (contents) append(sourcesContent, contents); else for (let i = 0; i < resolvedSources.length; i++) sourcesContent.push(null); for (let i = 0; i < decoded.length; i++) { const lineI = lineOffset + i; // We can only add so many lines before we step into the range that the next section's map // controls. When we get to the last line, then we'll start checking the segments to see if // they've crossed into the column range. But it may not have any columns that overstep, so we // still need to check that we don't overstep lines, too. if (lineI > stopLine) return; // The out line may already exist in mappings (if we're continuing the line started by a // previous section). Or, we may have jumped ahead several lines to start this section. const out = getLine(mappings, lineI); // On the 0th loop, the section's column offset shifts us forward. On all other lines (since the // map can be multiple lines), it doesn't. const cOffset = i === 0 ? columnOffset : 0; const line = decoded[i]; for (let j = 0; j < line.length; j++) { const seg = line[j]; const column = cOffset + seg[COLUMN]; // If this segment steps into the column range that the next section's map controls, we need // to stop early. if (lineI === stopLine && column >= stopColumn) return; if (seg.length === 1) { out.push([column]); continue; } const sourcesIndex = sourcesOffset + seg[SOURCES_INDEX]; const sourceLine = seg[SOURCE_LINE]; const sourceColumn = seg[SOURCE_COLUMN]; out.push(seg.length === 4 ? [column, sourcesIndex, sourceLine, sourceColumn] : [column, sourcesIndex, sourceLine, sourceColumn, namesOffset + seg[NAMES_INDEX]]); } } } function append(arr, other) { for (let i = 0; i < other.length; i++) arr.push(other[i]); } function getLine(arr, index) { for (let i = arr.length; i <= index; i++) arr[i] = []; return arr[index]; } const LINE_GTR_ZERO = '`line` must be greater than 0 (lines start at line 1)'; const COL_GTR_EQ_ZERO = '`column` must be greater than or equal to 0 (columns start at column 0)'; const LEAST_UPPER_BOUND = -1; const GREATEST_LOWER_BOUND = 1; /** * Returns the encoded (VLQ string) form of the SourceMap's mappings field. */ exports.encodedMappings = void 0; /** * Returns the decoded (array of lines of segments) form of the SourceMap's mappings field. */ exports.decodedMappings = void 0; /** * A low-level API to find the segment associated with a generated line/column (think, from a * stack trace). Line and column here are 0-based, unlike `originalPositionFor`. */ exports.traceSegment = void 0; /** * A higher-level API to find the source/line/column associated with a generated line/column * (think, from a stack trace). Line is 1-based, but column is 0-based, due to legacy behavior in * `source-map` library. */ exports.originalPositionFor = void 0; /** * Finds the generated line/column position of the provided source/line/column source position. */ exports.generatedPositionFor = void 0; /** * Finds all generated line/column positions of the provided source/line/column source position. */ exports.allGeneratedPositionsFor = void 0; /** * Iterates each mapping in generated position order. */ exports.eachMapping = void 0; /** * Retrieves the source content for a particular source, if its found. Returns null if not. */ exports.sourceContentFor = void 0; /** * A helper that skips sorting of the input map's mappings array, which can be expensive for larger * maps. */ exports.presortedDecodedMap = void 0; /** * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects * a sourcemap, or to JSON.stringify. */ exports.decodedMap = void 0; /** * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects * a sourcemap, or to JSON.stringify. */ exports.encodedMap = void 0; class TraceMap { constructor(map, mapUrl) { const isString = typeof map === 'string'; if (!isString && map._decodedMemo) return map; const parsed = (isString ? JSON.parse(map) : map); const { version, file, names, sourceRoot, sources, sourcesContent } = parsed; this.version = version; this.file = file; this.names = names; this.sourceRoot = sourceRoot; this.sources = sources; this.sourcesContent = sourcesContent; const from = resolve(sourceRoot || '', stripFilename(mapUrl)); this.resolvedSources = sources.map((s) => resolve(s || '', from)); const { mappings } = parsed; if (typeof mappings === 'string') { this._encoded = mappings; this._decoded = undefined; } else { this._encoded = undefined; this._decoded = maybeSort(mappings, isString); } this._decodedMemo = memoizedState(); this._bySources = undefined; this._bySourceMemos = undefined; } } (() => { exports.encodedMappings = (map) => { var _a; return ((_a = map._encoded) !== null && _a !== void 0 ? _a : (map._encoded = sourcemapCodec.encode(map._decoded))); }; exports.decodedMappings = (map) => { return (map._decoded || (map._decoded = sourcemapCodec.decode(map._encoded))); }; exports.traceSegment = (map, line, column) => { const decoded = exports.decodedMappings(map); // It's common for parent source maps to have pointers to lines that have no // mapping (like a "//# sourceMappingURL=") at the end of the child file. if (line >= decoded.length) return null; const segments = decoded[line]; const index = traceSegmentInternal(segments, map._decodedMemo, line, column, GREATEST_LOWER_BOUND); return index === -1 ? null : segments[index]; }; exports.originalPositionFor = (map, { line, column, bias }) => { line--; if (line < 0) throw new Error(LINE_GTR_ZERO); if (column < 0) throw new Error(COL_GTR_EQ_ZERO); const decoded = exports.decodedMappings(map); // It's common for parent source maps to have pointers to lines that have no // mapping (like a "//# sourceMappingURL=") at the end of the child file. if (line >= decoded.length) return OMapping(null, null, null, null); const segments = decoded[line]; const index = traceSegmentInternal(segments, map._decodedMemo, line, column, bias || GREATEST_LOWER_BOUND); if (index === -1) return OMapping(null, null, null, null); const segment = segments[index]; if (segment.length === 1) return OMapping(null, null, null, null); const { names, resolvedSources } = map; return OMapping(resolvedSources[segment[SOURCES_INDEX]], segment[SOURCE_LINE] + 1, segment[SOURCE_COLUMN], segment.length === 5 ? names[segment[NAMES_INDEX]] : null); }; exports.allGeneratedPositionsFor = (map, { source, line, column, bias }) => { // SourceMapConsumer uses LEAST_UPPER_BOUND for some reason, so we follow suit. return generatedPosition(map, source, line, column, bias || LEAST_UPPER_BOUND, true); }; exports.generatedPositionFor = (map, { source, line, column, bias }) => { return generatedPosition(map, source, line, column, bias || GREATEST_LOWER_BOUND, false); }; exports.eachMapping = (map, cb) => { const decoded = exports.decodedMappings(map); const { names, resolvedSources } = map; for (let i = 0; i < decoded.length; i++) { const line = decoded[i]; for (let j = 0; j < line.length; j++) { const seg = line[j]; const generatedLine = i + 1; const generatedColumn = seg[0]; let source = null; let originalLine = null; let originalColumn = null; let name = null; if (seg.length !== 1) { source = resolvedSources[seg[1]]; originalLine = seg[2] + 1; originalColumn = seg[3]; } if (seg.length === 5) name = names[seg[4]]; cb({ generatedLine, generatedColumn, source, originalLine, originalColumn, name, }); } } }; exports.sourceContentFor = (map, source) => { const { sources, resolvedSources, sourcesContent } = map; if (sourcesContent == null) return null; let index = sources.indexOf(source); if (index === -1) index = resolvedSources.indexOf(source); return index === -1 ? null : sourcesContent[index]; }; exports.presortedDecodedMap = (map, mapUrl) => { const tracer = new TraceMap(clone(map, []), mapUrl); tracer._decoded = map.mappings; return tracer; }; exports.decodedMap = (map) => { return clone(map, exports.decodedMappings(map)); }; exports.encodedMap = (map) => { return clone(map, exports.encodedMappings(map)); }; function generatedPosition(map, source, line, column, bias, all) { line--; if (line < 0) throw new Error(LINE_GTR_ZERO); if (column < 0) throw new Error(COL_GTR_EQ_ZERO); const { sources, resolvedSources } = map; let sourceIndex = sources.indexOf(source); if (sourceIndex === -1) sourceIndex = resolvedSources.indexOf(source); if (sourceIndex === -1) return all ? [] : GMapping(null, null); const generated = (map._bySources || (map._bySources = buildBySources(exports.decodedMappings(map), (map._bySourceMemos = sources.map(memoizedState))))); const segments = generated[sourceIndex][line]; if (segments == null) return all ? [] : GMapping(null, null); const memo = map._bySourceMemos[sourceIndex]; if (all) return sliceGeneratedPositions(segments, memo, line, column, bias); const index = traceSegmentInternal(segments, memo, line, column, bias); if (index === -1) return GMapping(null, null); const segment = segments[index]; return GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]); } })(); function clone(map, mappings) { return { version: map.version, file: map.file, names: map.names, sourceRoot: map.sourceRoot, sources: map.sources, sourcesContent: map.sourcesContent, mappings, }; } function OMapping(source, line, column, name) { return { source, line, column, name }; } function GMapping(line, column) { return { line, column }; } function traceSegmentInternal(segments, memo, line, column, bias) { let index = memoizedBinarySearch(segments, column, memo, line); if (found) { index = (bias === LEAST_UPPER_BOUND ? upperBound : lowerBound)(segments, column, index); } else if (bias === LEAST_UPPER_BOUND) index++; if (index === -1 || index === segments.length) return -1; return index; } function sliceGeneratedPositions(segments, memo, line, column, bias) { let min = traceSegmentInternal(segments, memo, line, column, GREATEST_LOWER_BOUND); // We ignored the bias when tracing the segment so that we're guarnateed to find the first (in // insertion order) segment that matched. Even if we did respect the bias when tracing, we would // still need to call `lowerBound()` to find the first segment, which is slower than just looking // for the GREATEST_LOWER_BOUND to begin with. The only difference that matters for us is when the // binary search didn't match, in which case GREATEST_LOWER_BOUND just needs to increment to // match LEAST_UPPER_BOUND. if (!found && bias === LEAST_UPPER_BOUND) min++; if (min === -1 || min === segments.length) return []; // We may have found the segment that started at an earlier column. If this is the case, then we // need to slice all generated segments that match _that_ column, because all such segments span // to our desired column. const matchedColumn = found ? column : segments[min][COLUMN]; // The binary search is not guaranteed to find the lower bound when a match wasn't found. if (!found) min = lowerBound(segments, matchedColumn, min); const max = upperBound(segments, matchedColumn, min); const result = []; for (; min <= max; min++) { const segment = segments[min]; result.push(GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN])); } return result; } exports.AnyMap = AnyMap; exports.GREATEST_LOWER_BOUND = GREATEST_LOWER_BOUND; exports.LEAST_UPPER_BOUND = LEAST_UPPER_BOUND; exports.TraceMap = TraceMap; Object.defineProperty(exports, '__esModule', { value: true }); })); //# sourceMappingURL=trace-mapping.umd.js.map dist/trace-mapping.umd.js.map 0000644 00000135411 15120157341 0012140 0 ustar 00 {"version":3,"file":"trace-mapping.umd.js","sources":["../src/resolve.ts","../src/strip-filename.ts","../src/sourcemap-segment.ts","../src/sort.ts","../src/binary-search.ts","../src/by-source.ts","../src/any-map.ts","../src/trace-mapping.ts"],"sourcesContent":["import resolveUri from '@jridgewell/resolve-uri';\n\nexport default function resolve(input: string, base: string | undefined): string {\n // The base is always treated as a directory, if it's not empty.\n // https://github.com/mozilla/source-map/blob/8cb3ee57/lib/util.js#L327\n // https://github.com/chromium/chromium/blob/da4adbb3/third_party/blink/renderer/devtools/front_end/sdk/SourceMap.js#L400-L401\n if (base && !base.endsWith('/')) base += '/';\n\n return resolveUri(input, base);\n}\n","/**\n * Removes everything after the last \"/\", but leaves the slash.\n */\nexport default function stripFilename(path: string | undefined | null): string {\n if (!path) return '';\n const index = path.lastIndexOf('/');\n return path.slice(0, index + 1);\n}\n","type GeneratedColumn = number;\ntype SourcesIndex = number;\ntype SourceLine = number;\ntype SourceColumn = number;\ntype NamesIndex = number;\n\ntype GeneratedLine = number;\n\nexport type SourceMapSegment =\n | [GeneratedColumn]\n | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn]\n | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn, NamesIndex];\n\nexport type ReverseSegment = [SourceColumn, GeneratedLine, GeneratedColumn];\n\nexport const COLUMN = 0;\nexport const SOURCES_INDEX = 1;\nexport const SOURCE_LINE = 2;\nexport const SOURCE_COLUMN = 3;\nexport const NAMES_INDEX = 4;\n\nexport const REV_GENERATED_LINE = 1;\nexport const REV_GENERATED_COLUMN = 2;\n","import { COLUMN } from './sourcemap-segment';\n\nimport type { SourceMapSegment } from './sourcemap-segment';\n\nexport default function maybeSort(\n mappings: SourceMapSegment[][],\n owned: boolean,\n): SourceMapSegment[][] {\n const unsortedIndex = nextUnsortedSegmentLine(mappings, 0);\n if (unsortedIndex === mappings.length) return mappings;\n\n // If we own the array (meaning we parsed it from JSON), then we're free to directly mutate it. If\n // not, we do not want to modify the consumer's input array.\n if (!owned) mappings = mappings.slice();\n\n for (let i = unsortedIndex; i < mappings.length; i = nextUnsortedSegmentLine(mappings, i + 1)) {\n mappings[i] = sortSegments(mappings[i], owned);\n }\n return mappings;\n}\n\nfunction nextUnsortedSegmentLine(mappings: SourceMapSegment[][], start: number): number {\n for (let i = start; i < mappings.length; i++) {\n if (!isSorted(mappings[i])) return i;\n }\n return mappings.length;\n}\n\nfunction isSorted(line: SourceMapSegment[]): boolean {\n for (let j = 1; j < line.length; j++) {\n if (line[j][COLUMN] < line[j - 1][COLUMN]) {\n return false;\n }\n }\n return true;\n}\n\nfunction sortSegments(line: SourceMapSegment[], owned: boolean): SourceMapSegment[] {\n if (!owned) line = line.slice();\n return line.sort(sortComparator);\n}\n\nfunction sortComparator(a: SourceMapSegment, b: SourceMapSegment): number {\n return a[COLUMN] - b[COLUMN];\n}\n","import type { SourceMapSegment, ReverseSegment } from './sourcemap-segment';\nimport { COLUMN } from './sourcemap-segment';\n\nexport type MemoState = {\n lastKey: number;\n lastNeedle: number;\n lastIndex: number;\n};\n\nexport let found = false;\n\n/**\n * A binary search implementation that returns the index if a match is found.\n * If no match is found, then the left-index (the index associated with the item that comes just\n * before the desired index) is returned. To maintain proper sort order, a splice would happen at\n * the next index:\n *\n * ```js\n * const array = [1, 3];\n * const needle = 2;\n * const index = binarySearch(array, needle, (item, needle) => item - needle);\n *\n * assert.equal(index, 0);\n * array.splice(index + 1, 0, needle);\n * assert.deepEqual(array, [1, 2, 3]);\n * ```\n */\nexport function binarySearch(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n low: number,\n high: number,\n): number {\n while (low <= high) {\n const mid = low + ((high - low) >> 1);\n const cmp = haystack[mid][COLUMN] - needle;\n\n if (cmp === 0) {\n found = true;\n return mid;\n }\n\n if (cmp < 0) {\n low = mid + 1;\n } else {\n high = mid - 1;\n }\n }\n\n found = false;\n return low - 1;\n}\n\nexport function upperBound(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n index: number,\n): number {\n for (let i = index + 1; i < haystack.length; index = i++) {\n if (haystack[i][COLUMN] !== needle) break;\n }\n return index;\n}\n\nexport function lowerBound(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n index: number,\n): number {\n for (let i = index - 1; i >= 0; index = i--) {\n if (haystack[i][COLUMN] !== needle) break;\n }\n return index;\n}\n\nexport function memoizedState(): MemoState {\n return {\n lastKey: -1,\n lastNeedle: -1,\n lastIndex: -1,\n };\n}\n\n/**\n * This overly complicated beast is just to record the last tested line/column and the resulting\n * index, allowing us to skip a few tests if mappings are monotonically increasing.\n */\nexport function memoizedBinarySearch(\n haystack: SourceMapSegment[] | ReverseSegment[],\n needle: number,\n state: MemoState,\n key: number,\n): number {\n const { lastKey, lastNeedle, lastIndex } = state;\n\n let low = 0;\n let high = haystack.length - 1;\n if (key === lastKey) {\n if (needle === lastNeedle) {\n found = lastIndex !== -1 && haystack[lastIndex][COLUMN] === needle;\n return lastIndex;\n }\n\n if (needle >= lastNeedle) {\n // lastIndex may be -1 if the previous needle was not found.\n low = lastIndex === -1 ? 0 : lastIndex;\n } else {\n high = lastIndex;\n }\n }\n state.lastKey = key;\n state.lastNeedle = needle;\n\n return (state.lastIndex = binarySearch(haystack, needle, low, high));\n}\n","import { COLUMN, SOURCES_INDEX, SOURCE_LINE, SOURCE_COLUMN } from './sourcemap-segment';\nimport { memoizedBinarySearch, upperBound } from './binary-search';\n\nimport type { ReverseSegment, SourceMapSegment } from './sourcemap-segment';\nimport type { MemoState } from './binary-search';\n\nexport type Source = {\n __proto__: null;\n [line: number]: Exclude<ReverseSegment, [number]>[];\n};\n\n// Rebuilds the original source files, with mappings that are ordered by source line/column instead\n// of generated line/column.\nexport default function buildBySources(\n decoded: readonly SourceMapSegment[][],\n memos: MemoState[],\n): Source[] {\n const sources: Source[] = memos.map(buildNullArray);\n\n for (let i = 0; i < decoded.length; i++) {\n const line = decoded[i];\n for (let j = 0; j < line.length; j++) {\n const seg = line[j];\n if (seg.length === 1) continue;\n\n const sourceIndex = seg[SOURCES_INDEX];\n const sourceLine = seg[SOURCE_LINE];\n const sourceColumn = seg[SOURCE_COLUMN];\n const originalSource = sources[sourceIndex];\n const originalLine = (originalSource[sourceLine] ||= []);\n const memo = memos[sourceIndex];\n\n // The binary search either found a match, or it found the left-index just before where the\n // segment should go. Either way, we want to insert after that. And there may be multiple\n // generated segments associated with an original location, so there may need to move several\n // indexes before we find where we need to insert.\n const index = upperBound(\n originalLine,\n sourceColumn,\n memoizedBinarySearch(originalLine, sourceColumn, memo, sourceLine),\n );\n\n insert(originalLine, (memo.lastIndex = index + 1), [sourceColumn, i, seg[COLUMN]]);\n }\n }\n\n return sources;\n}\n\nfunction insert<T>(array: T[], index: number, value: T) {\n for (let i = array.length; i > index; i--) {\n array[i] = array[i - 1];\n }\n array[index] = value;\n}\n\n// Null arrays allow us to use ordered index keys without actually allocating contiguous memory like\n// a real array. We use a null-prototype object to avoid prototype pollution and deoptimizations.\n// Numeric properties on objects are magically sorted in ascending order by the engine regardless of\n// the insertion order. So, by setting any numeric keys, even out of order, we'll get ascending\n// order when iterating with for-in.\nfunction buildNullArray<T extends { __proto__: null }>(): T {\n return { __proto__: null } as T;\n}\n","import { TraceMap, presortedDecodedMap, decodedMappings } from './trace-mapping';\nimport {\n COLUMN,\n SOURCES_INDEX,\n SOURCE_LINE,\n SOURCE_COLUMN,\n NAMES_INDEX,\n} from './sourcemap-segment';\n\nimport type {\n Section,\n SectionedSourceMap,\n DecodedSourceMap,\n SectionedSourceMapInput,\n Ro,\n} from './types';\nimport type { SourceMapSegment } from './sourcemap-segment';\n\ntype AnyMap = {\n new (map: SectionedSourceMapInput, mapUrl?: string | null): TraceMap;\n (map: SectionedSourceMapInput, mapUrl?: string | null): TraceMap;\n};\n\nexport const AnyMap: AnyMap = function (map, mapUrl) {\n const parsed =\n typeof map === 'string' ? (JSON.parse(map) as Exclude<SectionedSourceMapInput, string>) : map;\n\n if (!('sections' in parsed)) return new TraceMap(parsed, mapUrl);\n\n const mappings: SourceMapSegment[][] = [];\n const sources: string[] = [];\n const sourcesContent: (string | null)[] = [];\n const names: string[] = [];\n\n recurse(parsed, mapUrl, mappings, sources, sourcesContent, names, 0, 0, Infinity, Infinity);\n\n const joined: DecodedSourceMap = {\n version: 3,\n file: parsed.file,\n names,\n sources,\n sourcesContent,\n mappings,\n };\n\n return presortedDecodedMap(joined);\n} as AnyMap;\n\nfunction recurse(\n input: Ro<SectionedSourceMap>,\n mapUrl: string | null | undefined,\n mappings: SourceMapSegment[][],\n sources: string[],\n sourcesContent: (string | null)[],\n names: string[],\n lineOffset: number,\n columnOffset: number,\n stopLine: number,\n stopColumn: number,\n) {\n const { sections } = input;\n for (let i = 0; i < sections.length; i++) {\n const { map, offset } = sections[i];\n\n let sl = stopLine;\n let sc = stopColumn;\n if (i + 1 < sections.length) {\n const nextOffset = sections[i + 1].offset;\n sl = Math.min(stopLine, lineOffset + nextOffset.line);\n\n if (sl === stopLine) {\n sc = Math.min(stopColumn, columnOffset + nextOffset.column);\n } else if (sl < stopLine) {\n sc = columnOffset + nextOffset.column;\n }\n }\n\n addSection(\n map,\n mapUrl,\n mappings,\n sources,\n sourcesContent,\n names,\n lineOffset + offset.line,\n columnOffset + offset.column,\n sl,\n sc,\n );\n }\n}\n\nfunction addSection(\n input: Ro<Section['map']>,\n mapUrl: string | null | undefined,\n mappings: SourceMapSegment[][],\n sources: string[],\n sourcesContent: (string | null)[],\n names: string[],\n lineOffset: number,\n columnOffset: number,\n stopLine: number,\n stopColumn: number,\n) {\n if ('sections' in input) return recurse(...(arguments as unknown as Parameters<typeof recurse>));\n\n const map = new TraceMap(input, mapUrl);\n const sourcesOffset = sources.length;\n const namesOffset = names.length;\n const decoded = decodedMappings(map);\n const { resolvedSources, sourcesContent: contents } = map;\n\n append(sources, resolvedSources);\n append(names, map.names);\n if (contents) append(sourcesContent, contents);\n else for (let i = 0; i < resolvedSources.length; i++) sourcesContent.push(null);\n\n for (let i = 0; i < decoded.length; i++) {\n const lineI = lineOffset + i;\n\n // We can only add so many lines before we step into the range that the next section's map\n // controls. When we get to the last line, then we'll start checking the segments to see if\n // they've crossed into the column range. But it may not have any columns that overstep, so we\n // still need to check that we don't overstep lines, too.\n if (lineI > stopLine) return;\n\n // The out line may already exist in mappings (if we're continuing the line started by a\n // previous section). Or, we may have jumped ahead several lines to start this section.\n const out = getLine(mappings, lineI);\n // On the 0th loop, the section's column offset shifts us forward. On all other lines (since the\n // map can be multiple lines), it doesn't.\n const cOffset = i === 0 ? columnOffset : 0;\n\n const line = decoded[i];\n for (let j = 0; j < line.length; j++) {\n const seg = line[j];\n const column = cOffset + seg[COLUMN];\n\n // If this segment steps into the column range that the next section's map controls, we need\n // to stop early.\n if (lineI === stopLine && column >= stopColumn) return;\n\n if (seg.length === 1) {\n out.push([column]);\n continue;\n }\n\n const sourcesIndex = sourcesOffset + seg[SOURCES_INDEX];\n const sourceLine = seg[SOURCE_LINE];\n const sourceColumn = seg[SOURCE_COLUMN];\n out.push(\n seg.length === 4\n ? [column, sourcesIndex, sourceLine, sourceColumn]\n : [column, sourcesIndex, sourceLine, sourceColumn, namesOffset + seg[NAMES_INDEX]],\n );\n }\n }\n}\n\nfunction append<T>(arr: T[], other: T[]) {\n for (let i = 0; i < other.length; i++) arr.push(other[i]);\n}\n\nfunction getLine<T>(arr: T[][], index: number): T[] {\n for (let i = arr.length; i <= index; i++) arr[i] = [];\n return arr[index];\n}\n","import { encode, decode } from '@jridgewell/sourcemap-codec';\n\nimport resolve from './resolve';\nimport stripFilename from './strip-filename';\nimport maybeSort from './sort';\nimport buildBySources from './by-source';\nimport {\n memoizedState,\n memoizedBinarySearch,\n upperBound,\n lowerBound,\n found as bsFound,\n} from './binary-search';\nimport {\n COLUMN,\n SOURCES_INDEX,\n SOURCE_LINE,\n SOURCE_COLUMN,\n NAMES_INDEX,\n REV_GENERATED_LINE,\n REV_GENERATED_COLUMN,\n} from './sourcemap-segment';\n\nimport type { SourceMapSegment, ReverseSegment } from './sourcemap-segment';\nimport type {\n SourceMapV3,\n DecodedSourceMap,\n EncodedSourceMap,\n InvalidOriginalMapping,\n OriginalMapping,\n InvalidGeneratedMapping,\n GeneratedMapping,\n SourceMapInput,\n Needle,\n SourceNeedle,\n SourceMap,\n EachMapping,\n Bias,\n} from './types';\nimport type { Source } from './by-source';\nimport type { MemoState } from './binary-search';\n\nexport type { SourceMapSegment } from './sourcemap-segment';\nexport type {\n SourceMapInput,\n SectionedSourceMapInput,\n DecodedSourceMap,\n EncodedSourceMap,\n SectionedSourceMap,\n InvalidOriginalMapping,\n OriginalMapping as Mapping,\n OriginalMapping,\n InvalidGeneratedMapping,\n GeneratedMapping,\n EachMapping,\n} from './types';\n\nconst LINE_GTR_ZERO = '`line` must be greater than 0 (lines start at line 1)';\nconst COL_GTR_EQ_ZERO = '`column` must be greater than or equal to 0 (columns start at column 0)';\n\nexport const LEAST_UPPER_BOUND = -1;\nexport const GREATEST_LOWER_BOUND = 1;\n\n/**\n * Returns the encoded (VLQ string) form of the SourceMap's mappings field.\n */\nexport let encodedMappings: (map: TraceMap) => EncodedSourceMap['mappings'];\n\n/**\n * Returns the decoded (array of lines of segments) form of the SourceMap's mappings field.\n */\nexport let decodedMappings: (map: TraceMap) => Readonly<DecodedSourceMap['mappings']>;\n\n/**\n * A low-level API to find the segment associated with a generated line/column (think, from a\n * stack trace). Line and column here are 0-based, unlike `originalPositionFor`.\n */\nexport let traceSegment: (\n map: TraceMap,\n line: number,\n column: number,\n) => Readonly<SourceMapSegment> | null;\n\n/**\n * A higher-level API to find the source/line/column associated with a generated line/column\n * (think, from a stack trace). Line is 1-based, but column is 0-based, due to legacy behavior in\n * `source-map` library.\n */\nexport let originalPositionFor: (\n map: TraceMap,\n needle: Needle,\n) => OriginalMapping | InvalidOriginalMapping;\n\n/**\n * Finds the generated line/column position of the provided source/line/column source position.\n */\nexport let generatedPositionFor: (\n map: TraceMap,\n needle: SourceNeedle,\n) => GeneratedMapping | InvalidGeneratedMapping;\n\n/**\n * Finds all generated line/column positions of the provided source/line/column source position.\n */\nexport let allGeneratedPositionsFor: (map: TraceMap, needle: SourceNeedle) => GeneratedMapping[];\n\n/**\n * Iterates each mapping in generated position order.\n */\nexport let eachMapping: (map: TraceMap, cb: (mapping: EachMapping) => void) => void;\n\n/**\n * Retrieves the source content for a particular source, if its found. Returns null if not.\n */\nexport let sourceContentFor: (map: TraceMap, source: string) => string | null;\n\n/**\n * A helper that skips sorting of the input map's mappings array, which can be expensive for larger\n * maps.\n */\nexport let presortedDecodedMap: (map: DecodedSourceMap, mapUrl?: string) => TraceMap;\n\n/**\n * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let decodedMap: (\n map: TraceMap,\n) => Omit<DecodedSourceMap, 'mappings'> & { mappings: readonly SourceMapSegment[][] };\n\n/**\n * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let encodedMap: (map: TraceMap) => EncodedSourceMap;\n\nexport { AnyMap } from './any-map';\n\nexport class TraceMap implements SourceMap {\n declare version: SourceMapV3['version'];\n declare file: SourceMapV3['file'];\n declare names: SourceMapV3['names'];\n declare sourceRoot: SourceMapV3['sourceRoot'];\n declare sources: SourceMapV3['sources'];\n declare sourcesContent: SourceMapV3['sourcesContent'];\n\n declare resolvedSources: string[];\n private declare _encoded: string | undefined;\n\n private declare _decoded: SourceMapSegment[][] | undefined;\n private declare _decodedMemo: MemoState;\n\n private declare _bySources: Source[] | undefined;\n private declare _bySourceMemos: MemoState[] | undefined;\n\n constructor(map: SourceMapInput, mapUrl?: string | null) {\n const isString = typeof map === 'string';\n\n if (!isString && (map as unknown as { _decodedMemo: any })._decodedMemo) return map as TraceMap;\n\n const parsed = (isString ? JSON.parse(map) : map) as DecodedSourceMap | EncodedSourceMap;\n\n const { version, file, names, sourceRoot, sources, sourcesContent } = parsed;\n this.version = version;\n this.file = file;\n this.names = names;\n this.sourceRoot = sourceRoot;\n this.sources = sources;\n this.sourcesContent = sourcesContent;\n\n const from = resolve(sourceRoot || '', stripFilename(mapUrl));\n this.resolvedSources = sources.map((s) => resolve(s || '', from));\n\n const { mappings } = parsed;\n if (typeof mappings === 'string') {\n this._encoded = mappings;\n this._decoded = undefined;\n } else {\n this._encoded = undefined;\n this._decoded = maybeSort(mappings, isString);\n }\n\n this._decodedMemo = memoizedState();\n this._bySources = undefined;\n this._bySourceMemos = undefined;\n }\n\n static {\n encodedMappings = (map) => {\n return (map._encoded ??= encode(map._decoded!));\n };\n\n decodedMappings = (map) => {\n return (map._decoded ||= decode(map._encoded!));\n };\n\n traceSegment = (map, line, column) => {\n const decoded = decodedMappings(map);\n\n // It's common for parent source maps to have pointers to lines that have no\n // mapping (like a \"//# sourceMappingURL=\") at the end of the child file.\n if (line >= decoded.length) return null;\n\n const segments = decoded[line];\n const index = traceSegmentInternal(\n segments,\n map._decodedMemo,\n line,\n column,\n GREATEST_LOWER_BOUND,\n );\n\n return index === -1 ? null : segments[index];\n };\n\n originalPositionFor = (map, { line, column, bias }) => {\n line--;\n if (line < 0) throw new Error(LINE_GTR_ZERO);\n if (column < 0) throw new Error(COL_GTR_EQ_ZERO);\n\n const decoded = decodedMappings(map);\n\n // It's common for parent source maps to have pointers to lines that have no\n // mapping (like a \"//# sourceMappingURL=\") at the end of the child file.\n if (line >= decoded.length) return OMapping(null, null, null, null);\n\n const segments = decoded[line];\n const index = traceSegmentInternal(\n segments,\n map._decodedMemo,\n line,\n column,\n bias || GREATEST_LOWER_BOUND,\n );\n\n if (index === -1) return OMapping(null, null, null, null);\n\n const segment = segments[index];\n if (segment.length === 1) return OMapping(null, null, null, null);\n\n const { names, resolvedSources } = map;\n return OMapping(\n resolvedSources[segment[SOURCES_INDEX]],\n segment[SOURCE_LINE] + 1,\n segment[SOURCE_COLUMN],\n segment.length === 5 ? names[segment[NAMES_INDEX]] : null,\n );\n };\n\n allGeneratedPositionsFor = (map, { source, line, column, bias }) => {\n // SourceMapConsumer uses LEAST_UPPER_BOUND for some reason, so we follow suit.\n return generatedPosition(map, source, line, column, bias || LEAST_UPPER_BOUND, true);\n };\n\n generatedPositionFor = (map, { source, line, column, bias }) => {\n return generatedPosition(map, source, line, column, bias || GREATEST_LOWER_BOUND, false);\n };\n\n eachMapping = (map, cb) => {\n const decoded = decodedMappings(map);\n const { names, resolvedSources } = map;\n\n for (let i = 0; i < decoded.length; i++) {\n const line = decoded[i];\n for (let j = 0; j < line.length; j++) {\n const seg = line[j];\n\n const generatedLine = i + 1;\n const generatedColumn = seg[0];\n let source = null;\n let originalLine = null;\n let originalColumn = null;\n let name = null;\n if (seg.length !== 1) {\n source = resolvedSources[seg[1]];\n originalLine = seg[2] + 1;\n originalColumn = seg[3];\n }\n if (seg.length === 5) name = names[seg[4]];\n\n cb({\n generatedLine,\n generatedColumn,\n source,\n originalLine,\n originalColumn,\n name,\n } as EachMapping);\n }\n }\n };\n\n sourceContentFor = (map, source) => {\n const { sources, resolvedSources, sourcesContent } = map;\n if (sourcesContent == null) return null;\n\n let index = sources.indexOf(source);\n if (index === -1) index = resolvedSources.indexOf(source);\n\n return index === -1 ? null : sourcesContent[index];\n };\n\n presortedDecodedMap = (map, mapUrl) => {\n const tracer = new TraceMap(clone(map, []), mapUrl);\n tracer._decoded = map.mappings;\n return tracer;\n };\n\n decodedMap = (map) => {\n return clone(map, decodedMappings(map));\n };\n\n encodedMap = (map) => {\n return clone(map, encodedMappings(map));\n };\n\n function generatedPosition(\n map: TraceMap,\n source: string,\n line: number,\n column: number,\n bias: Bias,\n all: false,\n ): GeneratedMapping | InvalidGeneratedMapping;\n function generatedPosition(\n map: TraceMap,\n source: string,\n line: number,\n column: number,\n bias: Bias,\n all: true,\n ): GeneratedMapping[];\n function generatedPosition(\n map: TraceMap,\n source: string,\n line: number,\n column: number,\n bias: Bias,\n all: boolean,\n ): GeneratedMapping | InvalidGeneratedMapping | GeneratedMapping[] {\n line--;\n if (line < 0) throw new Error(LINE_GTR_ZERO);\n if (column < 0) throw new Error(COL_GTR_EQ_ZERO);\n\n const { sources, resolvedSources } = map;\n let sourceIndex = sources.indexOf(source);\n if (sourceIndex === -1) sourceIndex = resolvedSources.indexOf(source);\n if (sourceIndex === -1) return all ? [] : GMapping(null, null);\n\n const generated = (map._bySources ||= buildBySources(\n decodedMappings(map),\n (map._bySourceMemos = sources.map(memoizedState)),\n ));\n\n const segments = generated[sourceIndex][line];\n if (segments == null) return all ? [] : GMapping(null, null);\n\n const memo = map._bySourceMemos![sourceIndex];\n\n if (all) return sliceGeneratedPositions(segments, memo, line, column, bias);\n\n const index = traceSegmentInternal(segments, memo, line, column, bias);\n if (index === -1) return GMapping(null, null);\n\n const segment = segments[index];\n return GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]);\n }\n }\n}\n\nfunction clone<T extends string | readonly SourceMapSegment[][]>(\n map: TraceMap | DecodedSourceMap | EncodedSourceMap,\n mappings: T,\n): T extends string ? EncodedSourceMap : DecodedSourceMap {\n return {\n version: map.version,\n file: map.file,\n names: map.names,\n sourceRoot: map.sourceRoot,\n sources: map.sources,\n sourcesContent: map.sourcesContent,\n mappings,\n } as any;\n}\n\nfunction OMapping(source: null, line: null, column: null, name: null): InvalidOriginalMapping;\nfunction OMapping(\n source: string,\n line: number,\n column: number,\n name: string | null,\n): OriginalMapping;\nfunction OMapping(\n source: string | null,\n line: number | null,\n column: number | null,\n name: string | null,\n): OriginalMapping | InvalidOriginalMapping {\n return { source, line, column, name } as any;\n}\n\nfunction GMapping(line: null, column: null): InvalidGeneratedMapping;\nfunction GMapping(line: number, column: number): GeneratedMapping;\nfunction GMapping(\n line: number | null,\n column: number | null,\n): GeneratedMapping | InvalidGeneratedMapping {\n return { line, column } as any;\n}\n\nfunction traceSegmentInternal(\n segments: SourceMapSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): number;\nfunction traceSegmentInternal(\n segments: ReverseSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): number;\nfunction traceSegmentInternal(\n segments: SourceMapSegment[] | ReverseSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): number {\n let index = memoizedBinarySearch(segments, column, memo, line);\n if (bsFound) {\n index = (bias === LEAST_UPPER_BOUND ? upperBound : lowerBound)(segments, column, index);\n } else if (bias === LEAST_UPPER_BOUND) index++;\n\n if (index === -1 || index === segments.length) return -1;\n return index;\n}\n\nfunction sliceGeneratedPositions(\n segments: ReverseSegment[],\n memo: MemoState,\n line: number,\n column: number,\n bias: Bias,\n): GeneratedMapping[] {\n let min = traceSegmentInternal(segments, memo, line, column, GREATEST_LOWER_BOUND);\n\n // We ignored the bias when tracing the segment so that we're guarnateed to find the first (in\n // insertion order) segment that matched. 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If this is the case, then we\n // need to slice all generated segments that match _that_ column, because all such segments span\n // to our desired column.\n const matchedColumn = bsFound ? column : segments[min][COLUMN];\n\n // The binary search is not guaranteed to find the lower bound when a match wasn't found.\n if (!bsFound) min = lowerBound(segments, matchedColumn, min);\n const max = upperBound(segments, matchedColumn, min);\n\n const result = [];\n for (; min <= max; min++) {\n const segment = segments[min];\n result.push(GMapping(segment[REV_GENERATED_LINE] + 1, segment[REV_GENERATED_COLUMN]));\n }\n return 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dist/types/any-map.d.ts 0000644 00000000477 15120157341 0011016 0 ustar 00 import { TraceMap } from './trace-mapping'; import type { SectionedSourceMapInput } from './types'; declare type AnyMap = { new (map: SectionedSourceMapInput, mapUrl?: string | null): TraceMap; (map: SectionedSourceMapInput, mapUrl?: string | null): TraceMap; }; export declare const AnyMap: AnyMap; export {}; dist/types/binary-search.d.ts 0000644 00000003012 15120157341 0012167 0 ustar 00 import type { SourceMapSegment, ReverseSegment } from './sourcemap-segment'; export declare type MemoState = { lastKey: number; lastNeedle: number; lastIndex: number; }; export declare let found: boolean; /** * A binary search implementation that returns the index if a match is found. * If no match is found, then the left-index (the index associated with the item that comes just * before the desired index) is returned. To maintain proper sort order, a splice would happen at * the next index: * * ```js * const array = [1, 3]; * const needle = 2; * const index = binarySearch(array, needle, (item, needle) => item - needle); * * assert.equal(index, 0); * array.splice(index + 1, 0, needle); * assert.deepEqual(array, [1, 2, 3]); * ``` */ export declare function binarySearch(haystack: SourceMapSegment[] | ReverseSegment[], needle: number, low: number, high: number): number; export declare function upperBound(haystack: SourceMapSegment[] | ReverseSegment[], needle: number, index: number): number; export declare function lowerBound(haystack: SourceMapSegment[] | ReverseSegment[], needle: number, index: number): number; export declare function memoizedState(): MemoState; /** * This overly complicated beast is just to record the last tested line/column and the resulting * index, allowing us to skip a few tests if mappings are monotonically increasing. */ export declare function memoizedBinarySearch(haystack: SourceMapSegment[] | ReverseSegment[], needle: number, state: MemoState, key: number): number; dist/types/by-source.d.ts 0000644 00000000535 15120157341 0011357 0 ustar 00 import type { ReverseSegment, SourceMapSegment } from './sourcemap-segment'; import type { MemoState } from './binary-search'; export declare type Source = { __proto__: null; [line: number]: Exclude<ReverseSegment, [number]>[]; }; export default function buildBySources(decoded: readonly SourceMapSegment[][], memos: MemoState[]): Source[]; dist/types/resolve.d.ts 0000644 00000000122 15120157341 0011116 0 ustar 00 export default function resolve(input: string, base: string | undefined): string; dist/types/sort.d.ts 0000644 00000000246 15120157341 0010435 0 ustar 00 import type { SourceMapSegment } from './sourcemap-segment'; export default function maybeSort(mappings: SourceMapSegment[][], owned: boolean): SourceMapSegment[][]; dist/types/sourcemap-segment.d.ts 0000644 00000001417 15120157341 0013105 0 ustar 00 declare type GeneratedColumn = number; declare type SourcesIndex = number; declare type SourceLine = number; declare type SourceColumn = number; declare type NamesIndex = number; declare type GeneratedLine = number; export declare type SourceMapSegment = [GeneratedColumn] | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn] | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn, NamesIndex]; export declare type ReverseSegment = [SourceColumn, GeneratedLine, GeneratedColumn]; export declare const COLUMN = 0; export declare const SOURCES_INDEX = 1; export declare const SOURCE_LINE = 2; export declare const SOURCE_COLUMN = 3; export declare const NAMES_INDEX = 4; export declare const REV_GENERATED_LINE = 1; export declare const REV_GENERATED_COLUMN = 2; export {}; dist/types/strip-filename.d.ts 0000644 00000000230 15120157341 0012356 0 ustar 00 /** * Removes everything after the last "/", but leaves the slash. */ export default function stripFilename(path: string | undefined | null): string; dist/types/trace-mapping.d.ts 0000644 00000007222 15120157341 0012176 0 ustar 00 import type { SourceMapSegment } from './sourcemap-segment'; import type { SourceMapV3, DecodedSourceMap, EncodedSourceMap, InvalidOriginalMapping, OriginalMapping, InvalidGeneratedMapping, GeneratedMapping, SourceMapInput, Needle, SourceNeedle, SourceMap, EachMapping } from './types'; export type { SourceMapSegment } from './sourcemap-segment'; export type { SourceMapInput, SectionedSourceMapInput, DecodedSourceMap, EncodedSourceMap, SectionedSourceMap, InvalidOriginalMapping, OriginalMapping as Mapping, OriginalMapping, InvalidGeneratedMapping, GeneratedMapping, EachMapping, } from './types'; export declare const LEAST_UPPER_BOUND = -1; export declare const GREATEST_LOWER_BOUND = 1; /** * Returns the encoded (VLQ string) form of the SourceMap's mappings field. */ export declare let encodedMappings: (map: TraceMap) => EncodedSourceMap['mappings']; /** * Returns the decoded (array of lines of segments) form of the SourceMap's mappings field. */ export declare let decodedMappings: (map: TraceMap) => Readonly<DecodedSourceMap['mappings']>; /** * A low-level API to find the segment associated with a generated line/column (think, from a * stack trace). Line and column here are 0-based, unlike `originalPositionFor`. */ export declare let traceSegment: (map: TraceMap, line: number, column: number) => Readonly<SourceMapSegment> | null; /** * A higher-level API to find the source/line/column associated with a generated line/column * (think, from a stack trace). Line is 1-based, but column is 0-based, due to legacy behavior in * `source-map` library. */ export declare let originalPositionFor: (map: TraceMap, needle: Needle) => OriginalMapping | InvalidOriginalMapping; /** * Finds the generated line/column position of the provided source/line/column source position. */ export declare let generatedPositionFor: (map: TraceMap, needle: SourceNeedle) => GeneratedMapping | InvalidGeneratedMapping; /** * Finds all generated line/column positions of the provided source/line/column source position. */ export declare let allGeneratedPositionsFor: (map: TraceMap, needle: SourceNeedle) => GeneratedMapping[]; /** * Iterates each mapping in generated position order. */ export declare let eachMapping: (map: TraceMap, cb: (mapping: EachMapping) => void) => void; /** * Retrieves the source content for a particular source, if its found. Returns null if not. */ export declare let sourceContentFor: (map: TraceMap, source: string) => string | null; /** * A helper that skips sorting of the input map's mappings array, which can be expensive for larger * maps. */ export declare let presortedDecodedMap: (map: DecodedSourceMap, mapUrl?: string) => TraceMap; /** * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects * a sourcemap, or to JSON.stringify. */ export declare let decodedMap: (map: TraceMap) => Omit<DecodedSourceMap, 'mappings'> & { mappings: readonly SourceMapSegment[][]; }; /** * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects * a sourcemap, or to JSON.stringify. */ export declare let encodedMap: (map: TraceMap) => EncodedSourceMap; export { AnyMap } from './any-map'; export declare class TraceMap implements SourceMap { version: SourceMapV3['version']; file: SourceMapV3['file']; names: SourceMapV3['names']; sourceRoot: SourceMapV3['sourceRoot']; sources: SourceMapV3['sources']; sourcesContent: SourceMapV3['sourcesContent']; resolvedSources: string[]; private _encoded; private _decoded; private _decodedMemo; private _bySources; private _bySourceMemos; constructor(map: SourceMapInput, mapUrl?: string | null); } dist/types/types.d.ts 0000644 00000005140 15120157341 0010610 0 ustar 00 import type { SourceMapSegment } from './sourcemap-segment'; import type { GREATEST_LOWER_BOUND, LEAST_UPPER_BOUND, TraceMap } from './trace-mapping'; export interface SourceMapV3 { file?: string | null; names: string[]; sourceRoot?: string; sources: (string | null)[]; sourcesContent?: (string | null)[]; version: 3; } export interface EncodedSourceMap extends SourceMapV3 { mappings: string; } export interface DecodedSourceMap extends SourceMapV3 { mappings: SourceMapSegment[][]; } export interface Section { offset: { line: number; column: number; }; map: EncodedSourceMap | DecodedSourceMap | SectionedSourceMap; } export interface SectionedSourceMap { file?: string | null; sections: Section[]; version: 3; } export declare type OriginalMapping = { source: string | null; line: number; column: number; name: string | null; }; export declare type InvalidOriginalMapping = { source: null; line: null; column: null; name: null; }; export declare type GeneratedMapping = { line: number; column: number; }; export declare type InvalidGeneratedMapping = { line: null; column: null; }; export declare type Bias = typeof GREATEST_LOWER_BOUND | typeof LEAST_UPPER_BOUND; export declare type SourceMapInput = string | Ro<EncodedSourceMap> | Ro<DecodedSourceMap> | TraceMap; export declare type SectionedSourceMapInput = SourceMapInput | Ro<SectionedSourceMap>; export declare type Needle = { line: number; column: number; bias?: Bias; }; export declare type SourceNeedle = { source: string; line: number; column: number; bias?: Bias; }; export declare type EachMapping = { generatedLine: number; generatedColumn: number; source: null; originalLine: null; originalColumn: null; name: null; } | { generatedLine: number; generatedColumn: number; source: string | null; originalLine: number; originalColumn: number; name: string | null; }; export declare abstract class SourceMap { version: SourceMapV3['version']; file: SourceMapV3['file']; names: SourceMapV3['names']; sourceRoot: SourceMapV3['sourceRoot']; sources: SourceMapV3['sources']; sourcesContent: SourceMapV3['sourcesContent']; resolvedSources: SourceMapV3['sources']; } export declare type Ro<T> = T extends Array<infer V> ? V[] | Readonly<V[]> | RoArray<V> | Readonly<RoArray<V>> : T extends object ? T | Readonly<T> | RoObject<T> | Readonly<RoObject<T>> : T; declare type RoArray<T> = Ro<T>[]; declare type RoObject<T> = { [K in keyof T]: T[K] | Ro<T[K]>; }; export {}; package.json 0000644 00000004414 15120157341 0007034 0 ustar 00 { "name": "@jridgewell/trace-mapping", "version": "0.3.18", "description": "Trace the original position through a source map", "keywords": [ "source", "map" ], "main": "dist/trace-mapping.umd.js", "module": "dist/trace-mapping.mjs", "types": "dist/types/trace-mapping.d.ts", "files": [ "dist" ], "exports": { ".": [ { "types": "./dist/types/trace-mapping.d.ts", "browser": "./dist/trace-mapping.umd.js", "require": "./dist/trace-mapping.umd.js", "import": "./dist/trace-mapping.mjs" }, "./dist/trace-mapping.umd.js" ], "./package.json": "./package.json" }, "author": "Justin Ridgewell <justin@ridgewell.name>", "repository": { "type": "git", "url": "git+https://github.com/jridgewell/trace-mapping.git" }, "license": "MIT", "scripts": { "benchmark": "run-s build:rollup benchmark:*", "benchmark:install": "cd benchmark && npm install", "benchmark:only": "node --expose-gc benchmark/index.mjs", "build": "run-s -n build:*", "build:rollup": "rollup -c rollup.config.js", "build:ts": "tsc --project tsconfig.build.json", "lint": "run-s -n lint:*", "lint:prettier": "npm run test:lint:prettier -- --write", "lint:ts": "npm run test:lint:ts -- --fix", "prebuild": "rm -rf dist", "prepublishOnly": "npm run preversion", "preversion": "run-s test build", "test": "run-s -n test:lint test:only", "test:debug": "ava debug", "test:lint": "run-s -n test:lint:*", "test:lint:prettier": "prettier --check '{src,test}/**/*.ts' '**/*.md'", "test:lint:ts": "eslint '{src,test}/**/*.ts'", "test:only": "c8 ava", "test:watch": "ava --watch" }, "devDependencies": { "@rollup/plugin-typescript": "8.5.0", "@typescript-eslint/eslint-plugin": "5.39.0", "@typescript-eslint/parser": "5.39.0", "ava": "4.3.3", "benchmark": "2.1.4", "c8": "7.12.0", "esbuild": "0.15.10", "eslint": "8.25.0", "eslint-config-prettier": "8.5.0", "eslint-plugin-no-only-tests": "3.0.0", "npm-run-all": "4.1.5", "prettier": "2.7.1", "rollup": "2.79.1", "tsx": "3.10.1", "typescript": "4.8.4" }, "dependencies": { "@jridgewell/resolve-uri": "3.1.0", "@jridgewell/sourcemap-codec": "1.4.14" } }
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