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trace-mapping.mjs
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			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