feat: docker compose maybe
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# @ampproject/remapping
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> Remap sequential sourcemaps through transformations to point at the original source code
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Remapping allows you to take the sourcemaps generated through transforming your code and "remap"
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		||||
them to the original source locations. Think "my minified code, transformed with babel and bundled
 | 
			
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with webpack", all pointing to the correct location in your original source code.
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		||||
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		||||
With remapping, none of your source code transformations need to be aware of the input's sourcemap,
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		||||
they only need to generate an output sourcemap. This greatly simplifies building custom
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transformations (think a find-and-replace).
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## Installation
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```sh
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npm install @ampproject/remapping
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```
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## Usage
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```typescript
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function remapping(
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  map: SourceMap | SourceMap[],
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  loader: (file: string, ctx: LoaderContext) => (SourceMap | null | undefined),
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  options?: { excludeContent: boolean, decodedMappings: boolean }
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): SourceMap;
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// LoaderContext gives the loader the importing sourcemap, tree depth, the ability to override the
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		||||
// "source" location (where child sources are resolved relative to, or the location of original
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// source), and the ability to override the "content" of an original source for inclusion in the
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// output sourcemap.
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type LoaderContext = {
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 readonly importer: string;
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 readonly depth: number;
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 source: string;
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 content: string | null | undefined;
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}
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```
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`remapping` takes the final output sourcemap, and a `loader` function. For every source file pointer
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in the sourcemap, the `loader` will be called with the resolved path. If the path itself represents
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		||||
a transformed file (it has a sourcmap associated with it), then the `loader` should return that
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sourcemap. If not, the path will be treated as an original, untransformed source code.
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```js
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// Babel transformed "helloworld.js" into "transformed.js"
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const transformedMap = JSON.stringify({
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  file: 'transformed.js',
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  // 1st column of 2nd line of output file translates into the 1st source
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  // file, line 3, column 2
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  mappings: ';CAEE',
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  sources: ['helloworld.js'],
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  version: 3,
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});
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// Uglify minified "transformed.js" into "transformed.min.js"
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const minifiedTransformedMap = JSON.stringify({
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  file: 'transformed.min.js',
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  // 0th column of 1st line of output file translates into the 1st source
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  // file, line 2, column 1.
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  mappings: 'AACC',
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  names: [],
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  sources: ['transformed.js'],
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  version: 3,
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});
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const remapped = remapping(
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  minifiedTransformedMap,
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  (file, ctx) => {
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    // The "transformed.js" file is an transformed file.
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		||||
    if (file === 'transformed.js') {
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		||||
      // The root importer is empty.
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		||||
      console.assert(ctx.importer === '');
 | 
			
		||||
      // The depth in the sourcemap tree we're currently loading.
 | 
			
		||||
      // The root `minifiedTransformedMap` is depth 0, and its source children are depth 1, etc.
 | 
			
		||||
      console.assert(ctx.depth === 1);
 | 
			
		||||
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		||||
      return transformedMap;
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    // Loader will be called to load transformedMap's source file pointers as well.
 | 
			
		||||
    console.assert(file === 'helloworld.js');
 | 
			
		||||
    // `transformed.js`'s sourcemap points into `helloworld.js`.
 | 
			
		||||
    console.assert(ctx.importer === 'transformed.js');
 | 
			
		||||
    // This is a source child of `transformed`, which is a source child of `minifiedTransformedMap`.
 | 
			
		||||
    console.assert(ctx.depth === 2);
 | 
			
		||||
    return null;
 | 
			
		||||
  }
 | 
			
		||||
);
 | 
			
		||||
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		||||
console.log(remapped);
 | 
			
		||||
// {
 | 
			
		||||
//   file: 'transpiled.min.js',
 | 
			
		||||
//   mappings: 'AAEE',
 | 
			
		||||
//   sources: ['helloworld.js'],
 | 
			
		||||
//   version: 3,
 | 
			
		||||
// };
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
In this example, `loader` will be called twice:
 | 
			
		||||
 | 
			
		||||
1. `"transformed.js"`, the first source file pointer in the `minifiedTransformedMap`. We return the
 | 
			
		||||
   associated sourcemap for it (its a transformed file, after all) so that sourcemap locations can
 | 
			
		||||
   be traced through it into the source files it represents.
 | 
			
		||||
2. `"helloworld.js"`, our original, unmodified source code. This file does not have a sourcemap, so
 | 
			
		||||
   we return `null`.
 | 
			
		||||
 | 
			
		||||
The `remapped` sourcemap now points from `transformed.min.js` into locations in `helloworld.js`. If
 | 
			
		||||
you were to read the `mappings`, it says "0th column of the first line output line points to the 1st
 | 
			
		||||
column of the 2nd line of the file `helloworld.js`".
 | 
			
		||||
 | 
			
		||||
### Multiple transformations of a file
 | 
			
		||||
 | 
			
		||||
As a convenience, if you have multiple single-source transformations of a file, you may pass an
 | 
			
		||||
array of sourcemap files in the order of most-recent transformation sourcemap first. Note that this
 | 
			
		||||
changes the `importer` and `depth` of each call to our loader. So our above example could have been
 | 
			
		||||
written as:
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
const remapped = remapping(
 | 
			
		||||
  [minifiedTransformedMap, transformedMap],
 | 
			
		||||
  () => null
 | 
			
		||||
);
 | 
			
		||||
 | 
			
		||||
console.log(remapped);
 | 
			
		||||
// {
 | 
			
		||||
//   file: 'transpiled.min.js',
 | 
			
		||||
//   mappings: 'AAEE',
 | 
			
		||||
//   sources: ['helloworld.js'],
 | 
			
		||||
//   version: 3,
 | 
			
		||||
// };
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
### Advanced control of the loading graph
 | 
			
		||||
 | 
			
		||||
#### `source`
 | 
			
		||||
 | 
			
		||||
The `source` property can overridden to any value to change the location of the current load. Eg,
 | 
			
		||||
for an original source file, it allows us to change the location to the original source regardless
 | 
			
		||||
of what the sourcemap source entry says. And for transformed files, it allows us to change the
 | 
			
		||||
relative resolving location for child sources of the loaded sourcemap.
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
const remapped = remapping(
 | 
			
		||||
  minifiedTransformedMap,
 | 
			
		||||
  (file, ctx) => {
 | 
			
		||||
 | 
			
		||||
    if (file === 'transformed.js') {
 | 
			
		||||
      // We pretend the transformed.js file actually exists in the 'src/' directory. When the nested
 | 
			
		||||
      // source files are loaded, they will now be relative to `src/`.
 | 
			
		||||
      ctx.source = 'src/transformed.js';
 | 
			
		||||
      return transformedMap;
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    console.assert(file === 'src/helloworld.js');
 | 
			
		||||
    // We could futher change the source of this original file, eg, to be inside a nested directory
 | 
			
		||||
    // itself. This will be reflected in the remapped sourcemap.
 | 
			
		||||
    ctx.source = 'src/nested/transformed.js';
 | 
			
		||||
    return null;
 | 
			
		||||
  }
 | 
			
		||||
);
 | 
			
		||||
 | 
			
		||||
console.log(remapped);
 | 
			
		||||
// {
 | 
			
		||||
//   …,
 | 
			
		||||
//   sources: ['src/nested/helloworld.js'],
 | 
			
		||||
// };
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
#### `content`
 | 
			
		||||
 | 
			
		||||
The `content` property can be overridden when we encounter an original source file. Eg, this allows
 | 
			
		||||
you to manually provide the source content of the original file regardless of whether the
 | 
			
		||||
`sourcesContent` field is present in the parent sourcemap. It can also be set to `null` to remove
 | 
			
		||||
the source content.
 | 
			
		||||
 | 
			
		||||
```js
 | 
			
		||||
const remapped = remapping(
 | 
			
		||||
  minifiedTransformedMap,
 | 
			
		||||
  (file, ctx) => {
 | 
			
		||||
 | 
			
		||||
    if (file === 'transformed.js') {
 | 
			
		||||
      // transformedMap does not include a `sourcesContent` field, so usually the remapped sourcemap
 | 
			
		||||
      // would not include any `sourcesContent` values.
 | 
			
		||||
      return transformedMap;
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    console.assert(file === 'helloworld.js');
 | 
			
		||||
    // We can read the file to provide the source content.
 | 
			
		||||
    ctx.content = fs.readFileSync(file, 'utf8');
 | 
			
		||||
    return null;
 | 
			
		||||
  }
 | 
			
		||||
);
 | 
			
		||||
 | 
			
		||||
console.log(remapped);
 | 
			
		||||
// {
 | 
			
		||||
//   …,
 | 
			
		||||
//   sourcesContent: [
 | 
			
		||||
//     'console.log("Hello world!")',
 | 
			
		||||
//   ],
 | 
			
		||||
// };
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
### Options
 | 
			
		||||
 | 
			
		||||
#### excludeContent
 | 
			
		||||
 | 
			
		||||
By default, `excludeContent` is `false`. Passing `{ excludeContent: true }` will exclude the
 | 
			
		||||
`sourcesContent` field from the returned sourcemap. This is mainly useful when you want to reduce
 | 
			
		||||
the size out the sourcemap.
 | 
			
		||||
 | 
			
		||||
#### decodedMappings
 | 
			
		||||
 | 
			
		||||
By default, `decodedMappings` is `false`. Passing `{ decodedMappings: true }` will leave the
 | 
			
		||||
`mappings` field in a [decoded state](https://github.com/rich-harris/sourcemap-codec) instead of
 | 
			
		||||
encoding into a VLQ string.
 | 
			
		||||
							
								
								
									
										191
									
								
								node_modules/@ampproject/remapping/dist/remapping.mjs
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										191
									
								
								node_modules/@ampproject/remapping/dist/remapping.mjs
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,191 @@
 | 
			
		||||
import { decodedMappings, traceSegment, TraceMap } from '@jridgewell/trace-mapping';
 | 
			
		||||
import { GenMapping, maybeAddSegment, setSourceContent, toDecodedMap, toEncodedMap } from '@jridgewell/gen-mapping';
 | 
			
		||||
 | 
			
		||||
const SOURCELESS_MAPPING = /* #__PURE__ */ SegmentObject('', -1, -1, '', null);
 | 
			
		||||
const EMPTY_SOURCES = [];
 | 
			
		||||
function SegmentObject(source, line, column, name, content) {
 | 
			
		||||
    return { source, line, column, name, content };
 | 
			
		||||
}
 | 
			
		||||
function Source(map, sources, source, content) {
 | 
			
		||||
    return {
 | 
			
		||||
        map,
 | 
			
		||||
        sources,
 | 
			
		||||
        source,
 | 
			
		||||
        content,
 | 
			
		||||
    };
 | 
			
		||||
}
 | 
			
		||||
/**
 | 
			
		||||
 * MapSource represents a single sourcemap, with the ability to trace mappings into its child nodes
 | 
			
		||||
 * (which may themselves be SourceMapTrees).
 | 
			
		||||
 */
 | 
			
		||||
function MapSource(map, sources) {
 | 
			
		||||
    return Source(map, sources, '', null);
 | 
			
		||||
}
 | 
			
		||||
/**
 | 
			
		||||
 * A "leaf" node in the sourcemap tree, representing an original, unmodified source file. Recursive
 | 
			
		||||
 * segment tracing ends at the `OriginalSource`.
 | 
			
		||||
 */
 | 
			
		||||
function OriginalSource(source, content) {
 | 
			
		||||
    return Source(null, EMPTY_SOURCES, source, content);
 | 
			
		||||
}
 | 
			
		||||
/**
 | 
			
		||||
 * traceMappings is only called on the root level SourceMapTree, and begins the process of
 | 
			
		||||
 * resolving each mapping in terms of the original source files.
 | 
			
		||||
 */
 | 
			
		||||
function traceMappings(tree) {
 | 
			
		||||
    // TODO: Eventually support sourceRoot, which has to be removed because the sources are already
 | 
			
		||||
    // fully resolved. We'll need to make sources relative to the sourceRoot before adding them.
 | 
			
		||||
    const gen = new GenMapping({ file: tree.map.file });
 | 
			
		||||
    const { sources: rootSources, map } = tree;
 | 
			
		||||
    const rootNames = map.names;
 | 
			
		||||
    const rootMappings = decodedMappings(map);
 | 
			
		||||
    for (let i = 0; i < rootMappings.length; i++) {
 | 
			
		||||
        const segments = rootMappings[i];
 | 
			
		||||
        for (let j = 0; j < segments.length; j++) {
 | 
			
		||||
            const segment = segments[j];
 | 
			
		||||
            const genCol = segment[0];
 | 
			
		||||
            let traced = SOURCELESS_MAPPING;
 | 
			
		||||
            // 1-length segments only move the current generated column, there's no source information
 | 
			
		||||
            // to gather from it.
 | 
			
		||||
            if (segment.length !== 1) {
 | 
			
		||||
                const source = rootSources[segment[1]];
 | 
			
		||||
                traced = originalPositionFor(source, segment[2], segment[3], segment.length === 5 ? rootNames[segment[4]] : '');
 | 
			
		||||
                // If the trace is invalid, then the trace ran into a sourcemap that doesn't contain a
 | 
			
		||||
                // respective segment into an original source.
 | 
			
		||||
                if (traced == null)
 | 
			
		||||
                    continue;
 | 
			
		||||
            }
 | 
			
		||||
            const { column, line, name, content, source } = traced;
 | 
			
		||||
            maybeAddSegment(gen, i, genCol, source, line, column, name);
 | 
			
		||||
            if (source && content != null)
 | 
			
		||||
                setSourceContent(gen, source, content);
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
    return gen;
 | 
			
		||||
}
 | 
			
		||||
/**
 | 
			
		||||
 * originalPositionFor is only called on children SourceMapTrees. It recurses down into its own
 | 
			
		||||
 * child SourceMapTrees, until we find the original source map.
 | 
			
		||||
 */
 | 
			
		||||
function originalPositionFor(source, line, column, name) {
 | 
			
		||||
    if (!source.map) {
 | 
			
		||||
        return SegmentObject(source.source, line, column, name, source.content);
 | 
			
		||||
    }
 | 
			
		||||
    const segment = traceSegment(source.map, line, column);
 | 
			
		||||
    // If we couldn't find a segment, then this doesn't exist in the sourcemap.
 | 
			
		||||
    if (segment == null)
 | 
			
		||||
        return null;
 | 
			
		||||
    // 1-length segments only move the current generated column, there's no source information
 | 
			
		||||
    // to gather from it.
 | 
			
		||||
    if (segment.length === 1)
 | 
			
		||||
        return SOURCELESS_MAPPING;
 | 
			
		||||
    return originalPositionFor(source.sources[segment[1]], segment[2], segment[3], segment.length === 5 ? source.map.names[segment[4]] : name);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
function asArray(value) {
 | 
			
		||||
    if (Array.isArray(value))
 | 
			
		||||
        return value;
 | 
			
		||||
    return [value];
 | 
			
		||||
}
 | 
			
		||||
/**
 | 
			
		||||
 * Recursively builds a tree structure out of sourcemap files, with each node
 | 
			
		||||
 * being either an `OriginalSource` "leaf" or a `SourceMapTree` composed of
 | 
			
		||||
 * `OriginalSource`s and `SourceMapTree`s.
 | 
			
		||||
 *
 | 
			
		||||
 * Every sourcemap is composed of a collection of source files and mappings
 | 
			
		||||
 * into locations of those source files. When we generate a `SourceMapTree` for
 | 
			
		||||
 * the sourcemap, we attempt to load each source file's own sourcemap. If it
 | 
			
		||||
 * does not have an associated sourcemap, it is considered an original,
 | 
			
		||||
 * unmodified source file.
 | 
			
		||||
 */
 | 
			
		||||
function buildSourceMapTree(input, loader) {
 | 
			
		||||
    const maps = asArray(input).map((m) => new TraceMap(m, ''));
 | 
			
		||||
    const map = maps.pop();
 | 
			
		||||
    for (let i = 0; i < maps.length; i++) {
 | 
			
		||||
        if (maps[i].sources.length > 1) {
 | 
			
		||||
            throw new Error(`Transformation map ${i} must have exactly one source file.\n` +
 | 
			
		||||
                'Did you specify these with the most recent transformation maps first?');
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
    let tree = build(map, loader, '', 0);
 | 
			
		||||
    for (let i = maps.length - 1; i >= 0; i--) {
 | 
			
		||||
        tree = MapSource(maps[i], [tree]);
 | 
			
		||||
    }
 | 
			
		||||
    return tree;
 | 
			
		||||
}
 | 
			
		||||
function build(map, loader, importer, importerDepth) {
 | 
			
		||||
    const { resolvedSources, sourcesContent } = map;
 | 
			
		||||
    const depth = importerDepth + 1;
 | 
			
		||||
    const children = resolvedSources.map((sourceFile, i) => {
 | 
			
		||||
        // The loading context gives the loader more information about why this file is being loaded
 | 
			
		||||
        // (eg, from which importer). It also allows the loader to override the location of the loaded
 | 
			
		||||
        // sourcemap/original source, or to override the content in the sourcesContent field if it's
 | 
			
		||||
        // an unmodified source file.
 | 
			
		||||
        const ctx = {
 | 
			
		||||
            importer,
 | 
			
		||||
            depth,
 | 
			
		||||
            source: sourceFile || '',
 | 
			
		||||
            content: undefined,
 | 
			
		||||
        };
 | 
			
		||||
        // Use the provided loader callback to retrieve the file's sourcemap.
 | 
			
		||||
        // TODO: We should eventually support async loading of sourcemap files.
 | 
			
		||||
        const sourceMap = loader(ctx.source, ctx);
 | 
			
		||||
        const { source, content } = ctx;
 | 
			
		||||
        // If there is a sourcemap, then we need to recurse into it to load its source files.
 | 
			
		||||
        if (sourceMap)
 | 
			
		||||
            return build(new TraceMap(sourceMap, source), loader, source, depth);
 | 
			
		||||
        // Else, it's an an unmodified source file.
 | 
			
		||||
        // The contents of this unmodified source file can be overridden via the loader context,
 | 
			
		||||
        // allowing it to be explicitly null or a string. If it remains undefined, we fall back to
 | 
			
		||||
        // the importing sourcemap's `sourcesContent` field.
 | 
			
		||||
        const sourceContent = content !== undefined ? content : sourcesContent ? sourcesContent[i] : null;
 | 
			
		||||
        return OriginalSource(source, sourceContent);
 | 
			
		||||
    });
 | 
			
		||||
    return MapSource(map, children);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * A SourceMap v3 compatible sourcemap, which only includes fields that were
 | 
			
		||||
 * provided to it.
 | 
			
		||||
 */
 | 
			
		||||
class SourceMap {
 | 
			
		||||
    constructor(map, options) {
 | 
			
		||||
        const out = options.decodedMappings ? toDecodedMap(map) : toEncodedMap(map);
 | 
			
		||||
        this.version = out.version; // SourceMap spec says this should be first.
 | 
			
		||||
        this.file = out.file;
 | 
			
		||||
        this.mappings = out.mappings;
 | 
			
		||||
        this.names = out.names;
 | 
			
		||||
        this.sourceRoot = out.sourceRoot;
 | 
			
		||||
        this.sources = out.sources;
 | 
			
		||||
        if (!options.excludeContent) {
 | 
			
		||||
            this.sourcesContent = out.sourcesContent;
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
    toString() {
 | 
			
		||||
        return JSON.stringify(this);
 | 
			
		||||
    }
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * Traces through all the mappings in the root sourcemap, through the sources
 | 
			
		||||
 * (and their sourcemaps), all the way back to the original source location.
 | 
			
		||||
 *
 | 
			
		||||
 * `loader` will be called every time we encounter a source file. If it returns
 | 
			
		||||
 * a sourcemap, we will recurse into that sourcemap to continue the trace. If
 | 
			
		||||
 * it returns a falsey value, that source file is treated as an original,
 | 
			
		||||
 * unmodified source file.
 | 
			
		||||
 *
 | 
			
		||||
 * Pass `excludeContent` to exclude any self-containing source file content
 | 
			
		||||
 * from the output sourcemap.
 | 
			
		||||
 *
 | 
			
		||||
 * Pass `decodedMappings` to receive a SourceMap with decoded (instead of
 | 
			
		||||
 * VLQ encoded) mappings.
 | 
			
		||||
 */
 | 
			
		||||
function remapping(input, loader, options) {
 | 
			
		||||
    const opts = typeof options === 'object' ? options : { excludeContent: !!options, decodedMappings: false };
 | 
			
		||||
    const tree = buildSourceMapTree(input, loader);
 | 
			
		||||
    return new SourceMap(traceMappings(tree), opts);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
export { remapping as default };
 | 
			
		||||
//# sourceMappingURL=remapping.mjs.map
 | 
			
		||||
							
								
								
									
										1
									
								
								node_modules/@ampproject/remapping/dist/remapping.mjs.map
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										1
									
								
								node_modules/@ampproject/remapping/dist/remapping.mjs.map
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
										
											
												File diff suppressed because one or more lines are too long
											
										
									
								
							
							
								
								
									
										196
									
								
								node_modules/@ampproject/remapping/dist/remapping.umd.js
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										196
									
								
								node_modules/@ampproject/remapping/dist/remapping.umd.js
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,196 @@
 | 
			
		||||
(function (global, factory) {
 | 
			
		||||
    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('@jridgewell/trace-mapping'), require('@jridgewell/gen-mapping')) :
 | 
			
		||||
    typeof define === 'function' && define.amd ? define(['@jridgewell/trace-mapping', '@jridgewell/gen-mapping'], factory) :
 | 
			
		||||
    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.remapping = factory(global.traceMapping, global.genMapping));
 | 
			
		||||
})(this, (function (traceMapping, genMapping) { 'use strict';
 | 
			
		||||
 | 
			
		||||
    const SOURCELESS_MAPPING = /* #__PURE__ */ SegmentObject('', -1, -1, '', null);
 | 
			
		||||
    const EMPTY_SOURCES = [];
 | 
			
		||||
    function SegmentObject(source, line, column, name, content) {
 | 
			
		||||
        return { source, line, column, name, content };
 | 
			
		||||
    }
 | 
			
		||||
    function Source(map, sources, source, content) {
 | 
			
		||||
        return {
 | 
			
		||||
            map,
 | 
			
		||||
            sources,
 | 
			
		||||
            source,
 | 
			
		||||
            content,
 | 
			
		||||
        };
 | 
			
		||||
    }
 | 
			
		||||
    /**
 | 
			
		||||
     * MapSource represents a single sourcemap, with the ability to trace mappings into its child nodes
 | 
			
		||||
     * (which may themselves be SourceMapTrees).
 | 
			
		||||
     */
 | 
			
		||||
    function MapSource(map, sources) {
 | 
			
		||||
        return Source(map, sources, '', null);
 | 
			
		||||
    }
 | 
			
		||||
    /**
 | 
			
		||||
     * A "leaf" node in the sourcemap tree, representing an original, unmodified source file. Recursive
 | 
			
		||||
     * segment tracing ends at the `OriginalSource`.
 | 
			
		||||
     */
 | 
			
		||||
    function OriginalSource(source, content) {
 | 
			
		||||
        return Source(null, EMPTY_SOURCES, source, content);
 | 
			
		||||
    }
 | 
			
		||||
    /**
 | 
			
		||||
     * traceMappings is only called on the root level SourceMapTree, and begins the process of
 | 
			
		||||
     * resolving each mapping in terms of the original source files.
 | 
			
		||||
     */
 | 
			
		||||
    function traceMappings(tree) {
 | 
			
		||||
        // TODO: Eventually support sourceRoot, which has to be removed because the sources are already
 | 
			
		||||
        // fully resolved. We'll need to make sources relative to the sourceRoot before adding them.
 | 
			
		||||
        const gen = new genMapping.GenMapping({ file: tree.map.file });
 | 
			
		||||
        const { sources: rootSources, map } = tree;
 | 
			
		||||
        const rootNames = map.names;
 | 
			
		||||
        const rootMappings = traceMapping.decodedMappings(map);
 | 
			
		||||
        for (let i = 0; i < rootMappings.length; i++) {
 | 
			
		||||
            const segments = rootMappings[i];
 | 
			
		||||
            for (let j = 0; j < segments.length; j++) {
 | 
			
		||||
                const segment = segments[j];
 | 
			
		||||
                const genCol = segment[0];
 | 
			
		||||
                let traced = SOURCELESS_MAPPING;
 | 
			
		||||
                // 1-length segments only move the current generated column, there's no source information
 | 
			
		||||
                // to gather from it.
 | 
			
		||||
                if (segment.length !== 1) {
 | 
			
		||||
                    const source = rootSources[segment[1]];
 | 
			
		||||
                    traced = originalPositionFor(source, segment[2], segment[3], segment.length === 5 ? rootNames[segment[4]] : '');
 | 
			
		||||
                    // If the trace is invalid, then the trace ran into a sourcemap that doesn't contain a
 | 
			
		||||
                    // respective segment into an original source.
 | 
			
		||||
                    if (traced == null)
 | 
			
		||||
                        continue;
 | 
			
		||||
                }
 | 
			
		||||
                const { column, line, name, content, source } = traced;
 | 
			
		||||
                genMapping.maybeAddSegment(gen, i, genCol, source, line, column, name);
 | 
			
		||||
                if (source && content != null)
 | 
			
		||||
                    genMapping.setSourceContent(gen, source, content);
 | 
			
		||||
            }
 | 
			
		||||
        }
 | 
			
		||||
        return gen;
 | 
			
		||||
    }
 | 
			
		||||
    /**
 | 
			
		||||
     * originalPositionFor is only called on children SourceMapTrees. It recurses down into its own
 | 
			
		||||
     * child SourceMapTrees, until we find the original source map.
 | 
			
		||||
     */
 | 
			
		||||
    function originalPositionFor(source, line, column, name) {
 | 
			
		||||
        if (!source.map) {
 | 
			
		||||
            return SegmentObject(source.source, line, column, name, source.content);
 | 
			
		||||
        }
 | 
			
		||||
        const segment = traceMapping.traceSegment(source.map, line, column);
 | 
			
		||||
        // If we couldn't find a segment, then this doesn't exist in the sourcemap.
 | 
			
		||||
        if (segment == null)
 | 
			
		||||
            return null;
 | 
			
		||||
        // 1-length segments only move the current generated column, there's no source information
 | 
			
		||||
        // to gather from it.
 | 
			
		||||
        if (segment.length === 1)
 | 
			
		||||
            return SOURCELESS_MAPPING;
 | 
			
		||||
        return originalPositionFor(source.sources[segment[1]], segment[2], segment[3], segment.length === 5 ? source.map.names[segment[4]] : name);
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    function asArray(value) {
 | 
			
		||||
        if (Array.isArray(value))
 | 
			
		||||
            return value;
 | 
			
		||||
        return [value];
 | 
			
		||||
    }
 | 
			
		||||
    /**
 | 
			
		||||
     * Recursively builds a tree structure out of sourcemap files, with each node
 | 
			
		||||
     * being either an `OriginalSource` "leaf" or a `SourceMapTree` composed of
 | 
			
		||||
     * `OriginalSource`s and `SourceMapTree`s.
 | 
			
		||||
     *
 | 
			
		||||
     * Every sourcemap is composed of a collection of source files and mappings
 | 
			
		||||
     * into locations of those source files. When we generate a `SourceMapTree` for
 | 
			
		||||
     * the sourcemap, we attempt to load each source file's own sourcemap. If it
 | 
			
		||||
     * does not have an associated sourcemap, it is considered an original,
 | 
			
		||||
     * unmodified source file.
 | 
			
		||||
     */
 | 
			
		||||
    function buildSourceMapTree(input, loader) {
 | 
			
		||||
        const maps = asArray(input).map((m) => new traceMapping.TraceMap(m, ''));
 | 
			
		||||
        const map = maps.pop();
 | 
			
		||||
        for (let i = 0; i < maps.length; i++) {
 | 
			
		||||
            if (maps[i].sources.length > 1) {
 | 
			
		||||
                throw new Error(`Transformation map ${i} must have exactly one source file.\n` +
 | 
			
		||||
                    'Did you specify these with the most recent transformation maps first?');
 | 
			
		||||
            }
 | 
			
		||||
        }
 | 
			
		||||
        let tree = build(map, loader, '', 0);
 | 
			
		||||
        for (let i = maps.length - 1; i >= 0; i--) {
 | 
			
		||||
            tree = MapSource(maps[i], [tree]);
 | 
			
		||||
        }
 | 
			
		||||
        return tree;
 | 
			
		||||
    }
 | 
			
		||||
    function build(map, loader, importer, importerDepth) {
 | 
			
		||||
        const { resolvedSources, sourcesContent } = map;
 | 
			
		||||
        const depth = importerDepth + 1;
 | 
			
		||||
        const children = resolvedSources.map((sourceFile, i) => {
 | 
			
		||||
            // The loading context gives the loader more information about why this file is being loaded
 | 
			
		||||
            // (eg, from which importer). It also allows the loader to override the location of the loaded
 | 
			
		||||
            // sourcemap/original source, or to override the content in the sourcesContent field if it's
 | 
			
		||||
            // an unmodified source file.
 | 
			
		||||
            const ctx = {
 | 
			
		||||
                importer,
 | 
			
		||||
                depth,
 | 
			
		||||
                source: sourceFile || '',
 | 
			
		||||
                content: undefined,
 | 
			
		||||
            };
 | 
			
		||||
            // Use the provided loader callback to retrieve the file's sourcemap.
 | 
			
		||||
            // TODO: We should eventually support async loading of sourcemap files.
 | 
			
		||||
            const sourceMap = loader(ctx.source, ctx);
 | 
			
		||||
            const { source, content } = ctx;
 | 
			
		||||
            // If there is a sourcemap, then we need to recurse into it to load its source files.
 | 
			
		||||
            if (sourceMap)
 | 
			
		||||
                return build(new traceMapping.TraceMap(sourceMap, source), loader, source, depth);
 | 
			
		||||
            // Else, it's an an unmodified source file.
 | 
			
		||||
            // The contents of this unmodified source file can be overridden via the loader context,
 | 
			
		||||
            // allowing it to be explicitly null or a string. If it remains undefined, we fall back to
 | 
			
		||||
            // the importing sourcemap's `sourcesContent` field.
 | 
			
		||||
            const sourceContent = content !== undefined ? content : sourcesContent ? sourcesContent[i] : null;
 | 
			
		||||
            return OriginalSource(source, sourceContent);
 | 
			
		||||
        });
 | 
			
		||||
        return MapSource(map, children);
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    /**
 | 
			
		||||
     * A SourceMap v3 compatible sourcemap, which only includes fields that were
 | 
			
		||||
     * provided to it.
 | 
			
		||||
     */
 | 
			
		||||
    class SourceMap {
 | 
			
		||||
        constructor(map, options) {
 | 
			
		||||
            const out = options.decodedMappings ? genMapping.toDecodedMap(map) : genMapping.toEncodedMap(map);
 | 
			
		||||
            this.version = out.version; // SourceMap spec says this should be first.
 | 
			
		||||
            this.file = out.file;
 | 
			
		||||
            this.mappings = out.mappings;
 | 
			
		||||
            this.names = out.names;
 | 
			
		||||
            this.sourceRoot = out.sourceRoot;
 | 
			
		||||
            this.sources = out.sources;
 | 
			
		||||
            if (!options.excludeContent) {
 | 
			
		||||
                this.sourcesContent = out.sourcesContent;
 | 
			
		||||
            }
 | 
			
		||||
        }
 | 
			
		||||
        toString() {
 | 
			
		||||
            return JSON.stringify(this);
 | 
			
		||||
        }
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    /**
 | 
			
		||||
     * Traces through all the mappings in the root sourcemap, through the sources
 | 
			
		||||
     * (and their sourcemaps), all the way back to the original source location.
 | 
			
		||||
     *
 | 
			
		||||
     * `loader` will be called every time we encounter a source file. If it returns
 | 
			
		||||
     * a sourcemap, we will recurse into that sourcemap to continue the trace. If
 | 
			
		||||
     * it returns a falsey value, that source file is treated as an original,
 | 
			
		||||
     * unmodified source file.
 | 
			
		||||
     *
 | 
			
		||||
     * Pass `excludeContent` to exclude any self-containing source file content
 | 
			
		||||
     * from the output sourcemap.
 | 
			
		||||
     *
 | 
			
		||||
     * Pass `decodedMappings` to receive a SourceMap with decoded (instead of
 | 
			
		||||
     * VLQ encoded) mappings.
 | 
			
		||||
     */
 | 
			
		||||
    function remapping(input, loader, options) {
 | 
			
		||||
        const opts = typeof options === 'object' ? options : { excludeContent: !!options, decodedMappings: false };
 | 
			
		||||
        const tree = buildSourceMapTree(input, loader);
 | 
			
		||||
        return new SourceMap(traceMappings(tree), opts);
 | 
			
		||||
    }
 | 
			
		||||
 | 
			
		||||
    return remapping;
 | 
			
		||||
 | 
			
		||||
}));
 | 
			
		||||
//# sourceMappingURL=remapping.umd.js.map
 | 
			
		||||
							
								
								
									
										1
									
								
								node_modules/@ampproject/remapping/dist/remapping.umd.js.map
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										1
									
								
								node_modules/@ampproject/remapping/dist/remapping.umd.js.map
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
										
											
												File diff suppressed because one or more lines are too long
											
										
									
								
							
							
								
								
									
										14
									
								
								node_modules/@ampproject/remapping/dist/types/build-source-map-tree.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										14
									
								
								node_modules/@ampproject/remapping/dist/types/build-source-map-tree.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,14 @@
 | 
			
		||||
import type { MapSource as MapSourceType } from './source-map-tree';
 | 
			
		||||
import type { SourceMapInput, SourceMapLoader } from './types';
 | 
			
		||||
/**
 | 
			
		||||
 * Recursively builds a tree structure out of sourcemap files, with each node
 | 
			
		||||
 * being either an `OriginalSource` "leaf" or a `SourceMapTree` composed of
 | 
			
		||||
 * `OriginalSource`s and `SourceMapTree`s.
 | 
			
		||||
 *
 | 
			
		||||
 * Every sourcemap is composed of a collection of source files and mappings
 | 
			
		||||
 * into locations of those source files. When we generate a `SourceMapTree` for
 | 
			
		||||
 * the sourcemap, we attempt to load each source file's own sourcemap. If it
 | 
			
		||||
 * does not have an associated sourcemap, it is considered an original,
 | 
			
		||||
 * unmodified source file.
 | 
			
		||||
 */
 | 
			
		||||
export default function buildSourceMapTree(input: SourceMapInput | SourceMapInput[], loader: SourceMapLoader): MapSourceType;
 | 
			
		||||
							
								
								
									
										19
									
								
								node_modules/@ampproject/remapping/dist/types/remapping.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										19
									
								
								node_modules/@ampproject/remapping/dist/types/remapping.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,19 @@
 | 
			
		||||
import SourceMap from './source-map';
 | 
			
		||||
import type { SourceMapInput, SourceMapLoader, Options } from './types';
 | 
			
		||||
export type { SourceMapSegment, EncodedSourceMap, EncodedSourceMap as RawSourceMap, DecodedSourceMap, SourceMapInput, SourceMapLoader, LoaderContext, Options, } from './types';
 | 
			
		||||
/**
 | 
			
		||||
 * Traces through all the mappings in the root sourcemap, through the sources
 | 
			
		||||
 * (and their sourcemaps), all the way back to the original source location.
 | 
			
		||||
 *
 | 
			
		||||
 * `loader` will be called every time we encounter a source file. If it returns
 | 
			
		||||
 * a sourcemap, we will recurse into that sourcemap to continue the trace. If
 | 
			
		||||
 * it returns a falsey value, that source file is treated as an original,
 | 
			
		||||
 * unmodified source file.
 | 
			
		||||
 *
 | 
			
		||||
 * Pass `excludeContent` to exclude any self-containing source file content
 | 
			
		||||
 * from the output sourcemap.
 | 
			
		||||
 *
 | 
			
		||||
 * Pass `decodedMappings` to receive a SourceMap with decoded (instead of
 | 
			
		||||
 * VLQ encoded) mappings.
 | 
			
		||||
 */
 | 
			
		||||
export default function remapping(input: SourceMapInput | SourceMapInput[], loader: SourceMapLoader, options?: boolean | Options): SourceMap;
 | 
			
		||||
							
								
								
									
										42
									
								
								node_modules/@ampproject/remapping/dist/types/source-map-tree.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										42
									
								
								node_modules/@ampproject/remapping/dist/types/source-map-tree.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,42 @@
 | 
			
		||||
import { GenMapping } from '@jridgewell/gen-mapping';
 | 
			
		||||
import type { TraceMap } from '@jridgewell/trace-mapping';
 | 
			
		||||
export declare type SourceMapSegmentObject = {
 | 
			
		||||
    column: number;
 | 
			
		||||
    line: number;
 | 
			
		||||
    name: string;
 | 
			
		||||
    source: string;
 | 
			
		||||
    content: string | null;
 | 
			
		||||
};
 | 
			
		||||
export declare type OriginalSource = {
 | 
			
		||||
    map: null;
 | 
			
		||||
    sources: Sources[];
 | 
			
		||||
    source: string;
 | 
			
		||||
    content: string | null;
 | 
			
		||||
};
 | 
			
		||||
export declare type MapSource = {
 | 
			
		||||
    map: TraceMap;
 | 
			
		||||
    sources: Sources[];
 | 
			
		||||
    source: string;
 | 
			
		||||
    content: null;
 | 
			
		||||
};
 | 
			
		||||
export declare type Sources = OriginalSource | MapSource;
 | 
			
		||||
/**
 | 
			
		||||
 * MapSource represents a single sourcemap, with the ability to trace mappings into its child nodes
 | 
			
		||||
 * (which may themselves be SourceMapTrees).
 | 
			
		||||
 */
 | 
			
		||||
export declare function MapSource(map: TraceMap, sources: Sources[]): MapSource;
 | 
			
		||||
/**
 | 
			
		||||
 * A "leaf" node in the sourcemap tree, representing an original, unmodified source file. Recursive
 | 
			
		||||
 * segment tracing ends at the `OriginalSource`.
 | 
			
		||||
 */
 | 
			
		||||
export declare function OriginalSource(source: string, content: string | null): OriginalSource;
 | 
			
		||||
/**
 | 
			
		||||
 * traceMappings is only called on the root level SourceMapTree, and begins the process of
 | 
			
		||||
 * resolving each mapping in terms of the original source files.
 | 
			
		||||
 */
 | 
			
		||||
export declare function traceMappings(tree: MapSource): GenMapping;
 | 
			
		||||
/**
 | 
			
		||||
 * originalPositionFor is only called on children SourceMapTrees. It recurses down into its own
 | 
			
		||||
 * child SourceMapTrees, until we find the original source map.
 | 
			
		||||
 */
 | 
			
		||||
export declare function originalPositionFor(source: Sources, line: number, column: number, name: string): SourceMapSegmentObject | null;
 | 
			
		||||
							
								
								
									
										17
									
								
								node_modules/@ampproject/remapping/dist/types/source-map.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										17
									
								
								node_modules/@ampproject/remapping/dist/types/source-map.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,17 @@
 | 
			
		||||
import type { GenMapping } from '@jridgewell/gen-mapping';
 | 
			
		||||
import type { DecodedSourceMap, EncodedSourceMap, Options } from './types';
 | 
			
		||||
/**
 | 
			
		||||
 * A SourceMap v3 compatible sourcemap, which only includes fields that were
 | 
			
		||||
 * provided to it.
 | 
			
		||||
 */
 | 
			
		||||
export default class SourceMap {
 | 
			
		||||
    file?: string | null;
 | 
			
		||||
    mappings: EncodedSourceMap['mappings'] | DecodedSourceMap['mappings'];
 | 
			
		||||
    sourceRoot?: string;
 | 
			
		||||
    names: string[];
 | 
			
		||||
    sources: (string | null)[];
 | 
			
		||||
    sourcesContent?: (string | null)[];
 | 
			
		||||
    version: 3;
 | 
			
		||||
    constructor(map: GenMapping, options: Options);
 | 
			
		||||
    toString(): string;
 | 
			
		||||
}
 | 
			
		||||
							
								
								
									
										14
									
								
								node_modules/@ampproject/remapping/dist/types/types.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										14
									
								
								node_modules/@ampproject/remapping/dist/types/types.d.ts
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,14 @@
 | 
			
		||||
import type { SourceMapInput } from '@jridgewell/trace-mapping';
 | 
			
		||||
export type { SourceMapSegment, DecodedSourceMap, EncodedSourceMap, } from '@jridgewell/trace-mapping';
 | 
			
		||||
export type { SourceMapInput };
 | 
			
		||||
export declare type LoaderContext = {
 | 
			
		||||
    readonly importer: string;
 | 
			
		||||
    readonly depth: number;
 | 
			
		||||
    source: string;
 | 
			
		||||
    content: string | null | undefined;
 | 
			
		||||
};
 | 
			
		||||
export declare type SourceMapLoader = (file: string, ctx: LoaderContext) => SourceMapInput | null | undefined | void;
 | 
			
		||||
export declare type Options = {
 | 
			
		||||
    excludeContent?: boolean;
 | 
			
		||||
    decodedMappings?: boolean;
 | 
			
		||||
};
 | 
			
		||||
							
								
								
									
										75
									
								
								node_modules/@ampproject/remapping/package.json
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							
							
						
						
									
										75
									
								
								node_modules/@ampproject/remapping/package.json
									
									
									
										generated
									
									
										vendored
									
									
										Normal file
									
								
							@@ -0,0 +1,75 @@
 | 
			
		||||
{
 | 
			
		||||
  "name": "@ampproject/remapping",
 | 
			
		||||
  "version": "2.2.1",
 | 
			
		||||
  "description": "Remap sequential sourcemaps through transformations to point at the original source code",
 | 
			
		||||
  "keywords": [
 | 
			
		||||
    "source",
 | 
			
		||||
    "map",
 | 
			
		||||
    "remap"
 | 
			
		||||
  ],
 | 
			
		||||
  "main": "dist/remapping.umd.js",
 | 
			
		||||
  "module": "dist/remapping.mjs",
 | 
			
		||||
  "types": "dist/types/remapping.d.ts",
 | 
			
		||||
  "exports": {
 | 
			
		||||
    ".": [
 | 
			
		||||
      {
 | 
			
		||||
        "types": "./dist/types/remapping.d.ts",
 | 
			
		||||
        "browser": "./dist/remapping.umd.js",
 | 
			
		||||
        "require": "./dist/remapping.umd.js",
 | 
			
		||||
        "import": "./dist/remapping.mjs"
 | 
			
		||||
      },
 | 
			
		||||
      "./dist/remapping.umd.js"
 | 
			
		||||
    ],
 | 
			
		||||
    "./package.json": "./package.json"
 | 
			
		||||
  },
 | 
			
		||||
  "files": [
 | 
			
		||||
    "dist"
 | 
			
		||||
  ],
 | 
			
		||||
  "author": "Justin Ridgewell <jridgewell@google.com>",
 | 
			
		||||
  "repository": {
 | 
			
		||||
    "type": "git",
 | 
			
		||||
    "url": "git+https://github.com/ampproject/remapping.git"
 | 
			
		||||
  },
 | 
			
		||||
  "license": "Apache-2.0",
 | 
			
		||||
  "engines": {
 | 
			
		||||
    "node": ">=6.0.0"
 | 
			
		||||
  },
 | 
			
		||||
  "scripts": {
 | 
			
		||||
    "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": "node --inspect-brk node_modules/.bin/jest --runInBand",
 | 
			
		||||
    "test:lint": "run-s -n test:lint:*",
 | 
			
		||||
    "test:lint:prettier": "prettier --check '{src,test}/**/*.ts'",
 | 
			
		||||
    "test:lint:ts": "eslint '{src,test}/**/*.ts'",
 | 
			
		||||
    "test:only": "jest --coverage",
 | 
			
		||||
    "test:watch": "jest --coverage --watch"
 | 
			
		||||
  },
 | 
			
		||||
  "devDependencies": {
 | 
			
		||||
    "@rollup/plugin-typescript": "8.3.2",
 | 
			
		||||
    "@types/jest": "27.4.1",
 | 
			
		||||
    "@typescript-eslint/eslint-plugin": "5.20.0",
 | 
			
		||||
    "@typescript-eslint/parser": "5.20.0",
 | 
			
		||||
    "eslint": "8.14.0",
 | 
			
		||||
    "eslint-config-prettier": "8.5.0",
 | 
			
		||||
    "jest": "27.5.1",
 | 
			
		||||
    "jest-config": "27.5.1",
 | 
			
		||||
    "npm-run-all": "4.1.5",
 | 
			
		||||
    "prettier": "2.6.2",
 | 
			
		||||
    "rollup": "2.70.2",
 | 
			
		||||
    "ts-jest": "27.1.4",
 | 
			
		||||
    "tslib": "2.4.0",
 | 
			
		||||
    "typescript": "4.6.3"
 | 
			
		||||
  },
 | 
			
		||||
  "dependencies": {
 | 
			
		||||
    "@jridgewell/gen-mapping": "^0.3.0",
 | 
			
		||||
    "@jridgewell/trace-mapping": "^0.3.9"
 | 
			
		||||
  }
 | 
			
		||||
}
 | 
			
		||||
		Reference in New Issue
	
	Block a user