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(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.sourceMap = {}));
})(this, (function (exports) { 'use strict';
const comma = ','.charCodeAt(0);
const semicolon = ';'.charCodeAt(0);
const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
const intToChar = new Uint8Array(64); // 64 possible chars.
const charToInteger = new Uint8Array(128); // z is 122 in ASCII
for (let i = 0; i < chars.length; i++) {
const c = chars.charCodeAt(i);
charToInteger[c] = i;
intToChar[i] = c;
}
// Provide a fallback for older environments.
const td = typeof TextDecoder !== 'undefined'
? new TextDecoder()
: typeof Buffer !== 'undefined'
? {
decode(buf) {
const out = Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength);
return out.toString();
},
}
: {
decode(buf) {
let out = '';
for (let i = 0; i < buf.length; i++) {
out += String.fromCharCode(buf[i]);
}
return out;
},
};
function decode(mappings) {
const state = new Int32Array(5);
const decoded = [];
let line = [];
let sorted = true;
let lastCol = 0;
for (let i = 0; i < mappings.length;) {
const c = mappings.charCodeAt(i);
if (c === comma) {
i++;
}
else if (c === semicolon) {
state[0] = lastCol = 0;
if (!sorted)
sort(line);
sorted = true;
decoded.push(line);
line = [];
i++;
}
else {
i = decodeInteger(mappings, i, state, 0); // generatedCodeColumn
const col = state[0];
if (col < lastCol)
sorted = false;
lastCol = col;
if (!hasMoreSegments(mappings, i)) {
line.push([col]);
continue;
}
i = decodeInteger(mappings, i, state, 1); // sourceFileIndex
i = decodeInteger(mappings, i, state, 2); // sourceCodeLine
i = decodeInteger(mappings, i, state, 3); // sourceCodeColumn
if (!hasMoreSegments(mappings, i)) {
line.push([col, state[1], state[2], state[3]]);
continue;
}
i = decodeInteger(mappings, i, state, 4); // nameIndex
line.push([col, state[1], state[2], state[3], state[4]]);
}
}
if (!sorted)
sort(line);
decoded.push(line);
return decoded;
}
function decodeInteger(mappings, pos, state, j) {
let value = 0;
let shift = 0;
let integer = 0;
do {
const c = mappings.charCodeAt(pos++);
integer = charToInteger[c];
value |= (integer & 31) << shift;
shift += 5;
} while (integer & 32);
const shouldNegate = value & 1;
value >>>= 1;
if (shouldNegate) {
value = -0x80000000 | -value;
}
state[j] += value;
return pos;
}
function hasMoreSegments(mappings, i) {
if (i >= mappings.length)
return false;
const c = mappings.charCodeAt(i);
if (c === comma || c === semicolon)
return false;
return true;
}
function sort(line) {
line.sort(sortComparator$1);
}
function sortComparator$1(a, b) {
return a[0] - b[0];
}
function encode(decoded) {
const state = new Int32Array(5);
let buf = new Uint8Array(1024);
let pos = 0;
for (let i = 0; i < decoded.length; i++) {
const line = decoded[i];
if (i > 0) {
buf = reserve(buf, pos, 1);
buf[pos++] = semicolon;
}
if (line.length === 0)
continue;
state[0] = 0;
for (let j = 0; j < line.length; j++) {
const segment = line[j];
// We can push up to 5 ints, each int can take at most 7 chars, and we
// may push a comma.
buf = reserve(buf, pos, 36);
if (j > 0)
buf[pos++] = comma;
pos = encodeInteger(buf, pos, state, segment, 0); // generatedCodeColumn
if (segment.length === 1)
continue;
pos = encodeInteger(buf, pos, state, segment, 1); // sourceFileIndex
pos = encodeInteger(buf, pos, state, segment, 2); // sourceCodeLine
pos = encodeInteger(buf, pos, state, segment, 3); // sourceCodeColumn
if (segment.length === 4)
continue;
pos = encodeInteger(buf, pos, state, segment, 4); // nameIndex
}
}
return td.decode(buf.subarray(0, pos));
}
function reserve(buf, pos, count) {
if (buf.length > pos + count)
return buf;
const swap = new Uint8Array(buf.length * 2);
swap.set(buf);
return swap;
}
function encodeInteger(buf, pos, state, segment, j) {
const next = segment[j];
let num = next - state[j];
state[j] = next;
num = num < 0 ? (-num << 1) | 1 : num << 1;
do {
let clamped = num & 0b011111;
num >>>= 5;
if (num > 0)
clamped |= 0b100000;
buf[pos++] = intToChar[clamped];
} while (num > 0);
return pos;
}
// Matches the scheme of a URL, eg "http://"
const schemeRegex = /^[\w+.-]+:\/\//;
/**
* Matches the parts of a URL:
* 1. Scheme, including ":", guaranteed.
* 2. User/password, including "@", optional.
* 3. Host, guaranteed.
* 4. Port, including ":", optional.
* 5. Path, including "/", optional.
*/
const urlRegex = /^([\w+.-]+:)\/\/([^@/#?]*@)?([^:/#?]*)(:\d+)?(\/[^#?]*)?/;
/**
* File URLs are weird. They dont' need the regular `//` in the scheme, they may or may not start
* with a leading `/`, they can have a domain (but only if they don't start with a Windows drive).
*
* 1. Host, optional.
* 2. Path, which may inclue "/", guaranteed.
*/
const fileRegex = /^file:(?:\/\/((?![a-z]:)[^/]*)?)?(\/?.*)/i;
function isAbsoluteUrl(input) {
return schemeRegex.test(input);
}
function isSchemeRelativeUrl(input) {
return input.startsWith('//');
}
function isAbsolutePath(input) {
return input.startsWith('/');
}
function isFileUrl(input) {
return input.startsWith('file:');
}
function parseAbsoluteUrl(input) {
const match = urlRegex.exec(input);
return makeUrl(match[1], match[2] || '', match[3], match[4] || '', match[5] || '/');
}
function parseFileUrl(input) {
const match = fileRegex.exec(input);
const path = match[2];
return makeUrl('file:', '', match[1] || '', '', isAbsolutePath(path) ? path : '/' + path);
}
function makeUrl(scheme, user, host, port, path) {
return {
scheme,
user,
host,
port,
path,
relativePath: false,
};
}
function parseUrl(input) {
if (isSchemeRelativeUrl(input)) {
const url = parseAbsoluteUrl('http:' + input);
url.scheme = '';
return url;
}
if (isAbsolutePath(input)) {
const url = parseAbsoluteUrl('http://foo.com' + input);
url.scheme = '';
url.host = '';
return url;
}
if (isFileUrl(input))
return parseFileUrl(input);
if (isAbsoluteUrl(input))
return parseAbsoluteUrl(input);
const url = parseAbsoluteUrl('http://foo.com/' + input);
url.scheme = '';
url.host = '';
url.relativePath = true;
return url;
}
function stripPathFilename(path) {
// If a path ends with a parent directory "..", then it's a relative path with excess parent
// paths. It's not a file, so we can't strip it.
if (path.endsWith('/..'))
return path;
const index = path.lastIndexOf('/');
return path.slice(0, index + 1);
}
function mergePaths(url, base) {
// If we're not a relative path, then we're an absolute path, and it doesn't matter what base is.
if (!url.relativePath)
return;
normalizePath(base);
// If the path is just a "/", then it was an empty path to begin with (remember, we're a relative
// path).
if (url.path === '/') {
url.path = base.path;
}
else {
// Resolution happens relative to the base path's directory, not the file.
url.path = stripPathFilename(base.path) + url.path;
}
// If the base path is absolute, then our path is now absolute too.
url.relativePath = base.relativePath;
}
/**
* The path can have empty directories "//", unneeded parents "foo/..", or current directory
* "foo/.". We need to normalize to a standard representation.
*/
function normalizePath(url) {
const { relativePath } = url;
const pieces = url.path.split('/');
// We need to preserve the first piece always, so that we output a leading slash. The item at
// pieces[0] is an empty string.
let pointer = 1;
// Positive is the number of real directories we've output, used for popping a parent directory.
// Eg, "foo/bar/.." will have a positive 2, and we can decrement to be left with just "foo".
let positive = 0;
// We need to keep a trailing slash if we encounter an empty directory (eg, splitting "foo/" will
// generate `["foo", ""]` pieces). And, if we pop a parent directory. But once we encounter a
// real directory, we won't need to append, unless the other conditions happen again.
let addTrailingSlash = false;
for (let i = 1; i < pieces.length; i++) {
const piece = pieces[i];
// An empty directory, could be a trailing slash, or just a double "//" in the path.
if (!piece) {
addTrailingSlash = true;
continue;
}
// If we encounter a real directory, then we don't need to append anymore.
addTrailingSlash = false;
// A current directory, which we can always drop.
if (piece === '.')
continue;
// A parent directory, we need to see if there are any real directories we can pop. Else, we
// have an excess of parents, and we'll need to keep the "..".
if (piece === '..') {
if (positive) {
addTrailingSlash = true;
positive--;
pointer--;
}
else if (relativePath) {
// If we're in a relativePath, then we need to keep the excess parents. Else, in an absolute
// URL, protocol relative URL, or an absolute path, we don't need to keep excess.
pieces[pointer++] = piece;
}
continue;
}
// We've encountered a real directory. Move it to the next insertion pointer, which accounts for
// any popped or dropped directories.
pieces[pointer++] = piece;
positive++;
}
let path = '';
for (let i = 1; i < pointer; i++) {
path += '/' + pieces[i];
}
if (!path || (addTrailingSlash && !path.endsWith('/..'))) {
path += '/';
}
url.path = path;
}
/**
* Attempts to resolve `input` URL/path relative to `base`.
*/
function resolve$1(input, base) {
if (!input && !base)
return '';
const url = parseUrl(input);
// If we have a base, and the input isn't already an absolute URL, then we need to merge.
if (base && !url.scheme) {
const baseUrl = parseUrl(base);
url.scheme = baseUrl.scheme;
// If there's no host, then we were just a path.
if (!url.host) {
// The host, user, and port are joined, you can't copy one without the others.
url.user = baseUrl.user;
url.host = baseUrl.host;
url.port = baseUrl.port;
}
mergePaths(url, baseUrl);
}
normalizePath(url);
// If the input (and base, if there was one) are both relative, then we need to output a relative.
if (url.relativePath) {
// The first char is always a "/".
const path = url.path.slice(1);
if (!path)
return '.';
// If base started with a leading ".", or there is no base and input started with a ".", then we
// need to ensure that the relative path starts with a ".". We don't know if relative starts
// with a "..", though, so check before prepending.
const keepRelative = (base || input).startsWith('.');
return !keepRelative || path.startsWith('.') ? path : './' + path;
}
// If there's no host (and no scheme/user/port), then we need to output an absolute path.
if (!url.scheme && !url.host)
return url.path;
// We're outputting either an absolute URL, or a protocol relative one.
return `${url.scheme}//${url.user}${url.host}${url.port}${url.path}`;
}
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 resolve$1(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$1 = 0;
const SOURCES_INDEX$1 = 1;
const SOURCE_LINE$1 = 2;
const SOURCE_COLUMN$1 = 3;
const NAMES_INDEX$1 = 4;
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$1] < line[j - 1][COLUMN$1]) {
return false;
}
}
return true;
}
function sortSegments(line, owned) {
if (!owned)
line = line.slice();
return line.sort(sortComparator);
}
function sortComparator(a, b) {
return a[COLUMN$1] - b[COLUMN$1];
}
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$1] - 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; i++, index++) {
if (haystack[i][COLUMN$1] !== needle)
break;
}
return index;
}
function lowerBound(haystack, needle, index) {
for (let i = index - 1; i >= 0; i--, index--) {
if (haystack[i][COLUMN$1] !== 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$1] === 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));
}
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 = [];
const { sections } = parsed;
let i = 0;
for (; i < sections.length - 1; i++) {
const no = sections[i + 1].offset;
addSection(sections[i], mapUrl, mappings, sources, sourcesContent, names, no.line, no.column);
}
if (sections.length > 0) {
addSection(sections[i], mapUrl, mappings, sources, sourcesContent, names, Infinity, Infinity);
}
const joined = {
version: 3,
file: parsed.file,
names,
sources,
sourcesContent,
mappings,
};
return presortedDecodedMap(joined);
};
function addSection(section, mapUrl, mappings, sources, sourcesContent, names, stopLine, stopColumn) {
const map = AnyMap(section.map, mapUrl);
const { line: lineOffset, column: columnOffset } = section.offset;
const sourcesOffset = sources.length;
const namesOffset = names.length;
const decoded = decodedMappings(map);
const { resolvedSources } = map;
append(sources, resolvedSources);
append(sourcesContent, map.sourcesContent || fillSourcesContent(resolvedSources.length));
append(names, map.names);
// If this section jumps forwards several lines, we need to add lines to the output mappings catch up.
for (let i = mappings.length; i <= lineOffset; i++)
mappings.push([]);
// 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.
const stopI = stopLine - lineOffset;
const len = Math.min(decoded.length, stopI + 1);
for (let i = 0; i < len; i++) {
const line = decoded[i];
// On the 0th loop, the line will already exist due to a previous section, or the line catch up
// loop above.
const out = i === 0 ? mappings[lineOffset] : (mappings[lineOffset + i] = []);
// 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;
for (let j = 0; j < line.length; j++) {
const seg = line[j];
const column = cOffset + seg[COLUMN$1];
// If this segment steps into the column range that the next section's map controls, we need
// to stop early.
if (i === stopI && column >= stopColumn)
break;
if (seg.length === 1) {
out.push([column]);
continue;
}
const sourcesIndex = sourcesOffset + seg[SOURCES_INDEX$1];
const sourceLine = seg[SOURCE_LINE$1];
const sourceColumn = seg[SOURCE_COLUMN$1];
if (seg.length === 4) {
out.push([column, sourcesIndex, sourceLine, sourceColumn]);
continue;
}
out.push([column, sourcesIndex, sourceLine, sourceColumn, namesOffset + seg[NAMES_INDEX$1]]);
}
}
}
function append(arr, other) {
for (let i = 0; i < other.length; i++)
arr.push(other[i]);
}
// Sourcemaps don't need to have sourcesContent, and if they don't, we need to create an array of
// equal length to the sources. This is because the sources and sourcesContent are paired arrays,
// where `sourcesContent[i]` is the content of the `sources[i]` file. If we didn't, then joined
// sourcemap would desynchronize the sources/contents.
function fillSourcesContent(len) {
const sourcesContent = [];
for (let i = 0; i < len; i++)
sourcesContent[i] = null;
return sourcesContent;
}
const INVALID_ORIGINAL_MAPPING = Object.freeze({
source: null,
line: null,
column: null,
name: null,
});
Object.freeze({
line: null,
column: null,
});
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 decoded (array of lines of segments) form of the SourceMap's mappings field.
*/
let decodedMappings;
/**
* 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;
/**
* A helper that skips sorting of the input map's mappings array, which can be expensive for larger
* maps.
*/
let presortedDecodedMap;
class TraceMap {
constructor(map, mapUrl) {
this._decodedMemo = memoizedState();
this._bySources = undefined;
this._bySourceMemos = undefined;
const isString = typeof map === 'string';
if (!isString && map.constructor === TraceMap)
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;
if (sourceRoot || mapUrl) {
const from = resolve(sourceRoot || '', stripFilename(mapUrl));
this.resolvedSources = sources.map((s) => resolve(s || '', from));
}
else {
this.resolvedSources = sources.map((s) => s || '');
}
const { mappings } = parsed;
if (typeof mappings === 'string') {
this._encoded = mappings;
this._decoded = undefined;
}
else {
this._encoded = undefined;
this._decoded = maybeSort(mappings, isString);
}
}
}
(() => {
decodedMappings = (map) => {
return (map._decoded || (map._decoded = decode(map._encoded)));
};
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 INVALID_ORIGINAL_MAPPING;
const segment = traceSegmentInternal(decoded[line], map._decodedMemo, line, column, bias || GREATEST_LOWER_BOUND);
if (segment == null)
return INVALID_ORIGINAL_MAPPING;
if (segment.length == 1)
return INVALID_ORIGINAL_MAPPING;
const { names, resolvedSources } = map;
return {
source: resolvedSources[segment[SOURCES_INDEX$1]],
line: segment[SOURCE_LINE$1] + 1,
column: segment[SOURCE_COLUMN$1],
name: segment.length === 5 ? names[segment[NAMES_INDEX$1]] : null,
};
};
presortedDecodedMap = (map, mapUrl) => {
const clone = Object.assign({}, map);
clone.mappings = [];
const tracer = new TraceMap(clone, mapUrl);
tracer._decoded = map.mappings;
return tracer;
};
})();
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 null;
return segments[index];
}
/**
* Gets the index associated with `key` in the backing array, if it is already present.
*/
let get;
/**
* Puts `key` into the backing array, if it is not already present. Returns
* the index of the `key` in the backing array.
*/
let put;
/**
* SetArray acts like a `Set` (allowing only one occurrence of a string `key`), but provides the
* index of the `key` in the backing array.
*
* This is designed to allow synchronizing a second array with the contents of the backing array,
* like how in a sourcemap `sourcesContent[i]` is the source content associated with `source[i]`,
* and there are never duplicates.
*/
class SetArray {
constructor() {
this._indexes = { __proto__: null };
this.array = [];
}
}
(() => {
get = (strarr, key) => strarr._indexes[key];
put = (strarr, key) => {
// The key may or may not be present. If it is present, it's a number.
const index = get(strarr, key);
if (index !== undefined)
return index;
const { array, _indexes: indexes } = strarr;
return (indexes[key] = array.push(key) - 1);
};
})();
const COLUMN = 0;
const SOURCES_INDEX = 1;
const SOURCE_LINE = 2;
const SOURCE_COLUMN = 3;
const NAMES_INDEX = 4;
const NO_NAME = -1;
/**
* Same as `addMapping`, but will only add the mapping if it generates useful information in the
* resulting map. This only works correctly if mappings are added **in order**, meaning you should
* not add a mapping with a lower generated line/column than one that came before.
*/
let maybeAddMapping;
/**
* Adds/removes the content of the source file to the source map.
*/
let setSourceContent;
/**
* Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects
* a sourcemap, or to JSON.stringify.
*/
let toDecodedMap;
/**
* Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects
* a sourcemap, or to JSON.stringify.
*/
let toEncodedMap;
// This split declaration is only so that terser can elminiate the static initialization block.
let addSegmentInternal;
/**
* Provides the state to generate a sourcemap.
*/
class GenMapping {
constructor({ file, sourceRoot } = {}) {
this._names = new SetArray();
this._sources = new SetArray();
this._sourcesContent = [];
this._mappings = [];
this.file = file;
this.sourceRoot = sourceRoot;
}
}
(() => {
maybeAddMapping = (map, mapping) => {
return addMappingInternal(true, map, mapping);
};
setSourceContent = (map, source, content) => {
const { _sources: sources, _sourcesContent: sourcesContent } = map;
sourcesContent[put(sources, source)] = content;
};
toDecodedMap = (map) => {
const { file, sourceRoot, _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
removeEmptyFinalLines(mappings);
return {
version: 3,
file: file || undefined,
names: names.array,
sourceRoot: sourceRoot || undefined,
sources: sources.array,
sourcesContent,
mappings,
};
};
toEncodedMap = (map) => {
const decoded = toDecodedMap(map);
return Object.assign(Object.assign({}, decoded), { mappings: encode(decoded.mappings) });
};
// Internal helpers
addSegmentInternal = (skipable, map, genLine, genColumn, source, sourceLine, sourceColumn, name) => {
const { _mappings: mappings, _sources: sources, _sourcesContent: sourcesContent, _names: names, } = map;
const line = getLine(mappings, genLine);
const index = getColumnIndex(line, genColumn);
if (!source) {
if (skipable && skipSourceless(line, index))
return;
return insert(line, index, [genColumn]);
}
const sourcesIndex = put(sources, source);
const namesIndex = name ? put(names, name) : NO_NAME;
if (sourcesIndex === sourcesContent.length)
sourcesContent[sourcesIndex] = null;
if (skipable && skipSource(line, index, sourcesIndex, sourceLine, sourceColumn, namesIndex)) {
return;
}
return insert(line, index, name
? [genColumn, sourcesIndex, sourceLine, sourceColumn, namesIndex]
: [genColumn, sourcesIndex, sourceLine, sourceColumn]);
};
})();
function getLine(mappings, index) {
for (let i = mappings.length; i <= index; i++) {
mappings[i] = [];
}
return mappings[index];
}
function getColumnIndex(line, genColumn) {
let index = line.length;
for (let i = index - 1; i >= 0; index = i--) {
const current = line[i];
if (genColumn >= current[COLUMN])
break;
}
return index;
}
function insert(array, index, value) {
for (let i = array.length; i > index; i--) {
array[i] = array[i - 1];
}
array[index] = value;
}
function removeEmptyFinalLines(mappings) {
const { length } = mappings;
let len = length;
for (let i = len - 1; i >= 0; len = i, i--) {
if (mappings[i].length > 0)
break;
}
if (len < length)
mappings.length = len;
}
function skipSourceless(line, index) {
// The start of a line is already sourceless, so adding a sourceless segment to the beginning
// doesn't generate any useful information.
if (index === 0)
return true;
const prev = line[index - 1];
// If the previous segment is also sourceless, then adding another sourceless segment doesn't
// genrate any new information. Else, this segment will end the source/named segment and point to
// a sourceless position, which is useful.
return prev.length === 1;
}
function skipSource(line, index, sourcesIndex, sourceLine, sourceColumn, namesIndex) {
// A source/named segment at the start of a line gives position at that genColumn
if (index === 0)
return false;
const prev = line[index - 1];
// If the previous segment is sourceless, then we're transitioning to a source.
if (prev.length === 1)
return false;
// If the previous segment maps to the exact same source position, then this segment doesn't
// provide any new position information.
return (sourcesIndex === prev[SOURCES_INDEX] &&
sourceLine === prev[SOURCE_LINE] &&
sourceColumn === prev[SOURCE_COLUMN] &&
namesIndex === (prev.length === 5 ? prev[NAMES_INDEX] : NO_NAME));
}
function addMappingInternal(skipable, map, mapping) {
const { generated, source, original, name } = mapping;
if (!source) {
return addSegmentInternal(skipable, map, generated.line - 1, generated.column, null, null, null, null);
}
const s = source;
return addSegmentInternal(skipable, map, generated.line - 1, generated.column, s, original.line - 1, original.column, name);
}
class SourceMapConsumer {
constructor(map, mapUrl) {
const trace = (this._map = new AnyMap(map, mapUrl));
this.file = trace.file;
this.names = trace.names;
this.sourceRoot = trace.sourceRoot;
this.sources = trace.resolvedSources;
this.sourcesContent = trace.sourcesContent;
}
originalPositionFor(needle) {
return originalPositionFor(this._map, needle);
}
destroy() {
// noop.
}
}
class SourceMapGenerator {
constructor(opts) {
this._map = new GenMapping(opts);
}
addMapping(mapping) {
maybeAddMapping(this._map, mapping);
}
setSourceContent(source, content) {
setSourceContent(this._map, source, content);
}
toJSON() {
return toEncodedMap(this._map);
}
toDecodedMap() {
return toDecodedMap(this._map);
}
}
exports.SourceMapConsumer = SourceMapConsumer;
exports.SourceMapGenerator = SourceMapGenerator;
Object.defineProperty(exports, '__esModule', { value: true });
}));
//# sourceMappingURL=source-map.umd.js.map