update required modules

node_modules/.bin/ts-standard.ps1

+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../ts-standard/bin/cmd.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../ts-standard/bin/cmd.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../ts-standard/bin/cmd.js" $args
+  } else {
+    & "node$exe"  "$basedir/../ts-standard/bin/cmd.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/tsc

+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../typescript/bin/tsc" "$@"
+else 
+  exec node  "$basedir/../typescript/bin/tsc" "$@"
+fi

node_modules/.bin/tsc.cmd

+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\typescript\bin\tsc" %*

node_modules/.bin/tsc.ps1

+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../typescript/bin/tsc" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../typescript/bin/tsc" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../typescript/bin/tsc" $args
+  } else {
+    & "node$exe"  "$basedir/../typescript/bin/tsc" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/.bin/tsserver

+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../typescript/bin/tsserver" "$@"
+else 
+  exec node  "$basedir/../typescript/bin/tsserver" "$@"
+fi

node_modules/.bin/tsserver.cmd

+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\typescript\bin\tsserver" %*

node_modules/.bin/tsserver.ps1

+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../typescript/bin/tsserver" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../typescript/bin/tsserver" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../typescript/bin/tsserver" $args
+  } else {
+    & "node$exe"  "$basedir/../typescript/bin/tsserver" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

node_modules/@ampproject/remapping/LICENSE

+
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+
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+   See the License for the specific language governing permissions and
+   limitations under the License.

node_modules/@ampproject/remapping/README.md

+# @ampproject/remapping
+
+> Remap sequential sourcemaps through transformations to point at the original source code
+
+Remapping allows you to take the sourcemaps generated through transforming your code and "remap"
+them to the original source locations. Think "my minified code, transformed with babel and bundled
+with webpack", all pointing to the correct location in your original source code.
+
+With remapping, none of your source code transformations need to be aware of the input's sourcemap,
+they only need to generate an output sourcemap. This greatly simplifies building custom
+transformations (think a find-and-replace).
+
+## Installation
+
+```sh
+npm install @ampproject/remapping
+```
+
+## Usage
+
+```typescript
+function remapping(
+  map: SourceMap | SourceMap[],
+  loader: (file: string, ctx: LoaderContext) => (SourceMap | null | undefined),
+  options?: { excludeContent: boolean, decodedMappings: boolean }
+): SourceMap;
+
+// LoaderContext gives the loader the importing sourcemap, tree depth, the ability to override the
+// "source" location (where child sources are resolved relative to, or the location of original
+// source), and the ability to override the "content" of an original source for inclusion in the
+// output sourcemap.
+type LoaderContext = {
+ readonly importer: string;
+ readonly depth: number;
+ source: string;
+ content: string | null | undefined;
+}
+```
+
+`remapping` takes the final output sourcemap, and a `loader` function. For every source file pointer
+in the sourcemap, the `loader` will be called with the resolved path. If the path itself represents
+a transformed file (it has a sourcmap associated with it), then the `loader` should return that
+sourcemap. If not, the path will be treated as an original, untransformed source code.
+
+```js
+// Babel transformed "helloworld.js" into "transformed.js"
+const transformedMap = JSON.stringify({
+  file: 'transformed.js',
+  // 1st column of 2nd line of output file translates into the 1st source
+  // file, line 3, column 2
+  mappings: ';CAEE',
+  sources: ['helloworld.js'],
+  version: 3,
+});
+
+// Uglify minified "transformed.js" into "transformed.min.js"
+const minifiedTransformedMap = JSON.stringify({
+  file: 'transformed.min.js',
+  // 0th column of 1st line of output file translates into the 1st source
+  // file, line 2, column 1.
+  mappings: 'AACC',
+  names: [],
+  sources: ['transformed.js'],
+  version: 3,
+});
+
+const remapped = remapping(
+  minifiedTransformedMap,
+  (file, ctx) => {
+
+    // The "transformed.js" file is an transformed file.
+    if (file === 'transformed.js') {
+      // The root importer is empty.
+      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);
+
+      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;
+  }
+);
+
+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.

node_modules/@ampproject/remapping/dist/remapping.mjs

+import { decodedMappings, traceSegment, TraceMap } from '@jridgewell/trace-mapping';
+import { GenMapping, addSegment, setSourceContent, decodedMap, encodedMap } from '@jridgewell/gen-mapping';
+
+const SOURCELESS_MAPPING = {
+    source: null,
+    column: null,
+    line: null,
+    name: null,
+    content: null,
+};
+const EMPTY_SOURCES = [];
+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) {
+    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];
+        let lastSource = null;
+        let lastSourceLine = null;
+        let lastSourceColumn = null;
+        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;
+            }
+            // So we traced a segment down into its original source file. Now push a
+            // new segment pointing to this location.
+            const { column, line, name, content, source } = traced;
+            if (line === lastSourceLine && column === lastSourceColumn && source === lastSource) {
+                continue;
+            }
+            lastSourceLine = line;
+            lastSourceColumn = column;
+            lastSource = source;
+            // Sigh, TypeScript can't figure out source/line/column are either all null, or all non-null...
+            addSegment(gen, i, genCol, source, line, column, name);
+            if (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 { column, line, name, source: source.source, content: 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 ? decodedMap(map) : encodedMap(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

node_modules/@ampproject/remapping/dist/remapping.mjs.map

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node_modules/@ampproject/remapping/dist/remapping.umd.js

+(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 = {
+        source: null,
+        column: null,
+        line: null,
+        name: null,
+        content: null,
+    };
+    const EMPTY_SOURCES = [];
+    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) {
+        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];
+            let lastSource = null;
+            let lastSourceLine = null;
+            let lastSourceColumn = null;
+            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;
+                }
+                // So we traced a segment down into its original source file. Now push a
+                // new segment pointing to this location.
+                const { column, line, name, content, source } = traced;
+                if (line === lastSourceLine && column === lastSourceColumn && source === lastSource) {
+                    continue;
+                }
+                lastSourceLine = line;
+                lastSourceColumn = column;
+                lastSource = source;
+                // Sigh, TypeScript can't figure out source/line/column are either all null, or all non-null...
+                genMapping.addSegment(gen, i, genCol, source, line, column, name);
+                if (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 { column, line, name, source: source.source, content: 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.decodedMap(map) : genMapping.encodedMap(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

node_modules/@ampproject/remapping/dist/remapping.umd.js.map

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\ No newline at end of file

node_modules/@ampproject/remapping/dist/types/build-source-map-tree.d.ts

+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;

node_modules/@ampproject/remapping/dist/types/remapping.d.ts

+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;

node_modules/@ampproject/remapping/dist/types/source-map-tree.d.ts

+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;
+} | {
+    column: null;
+    line: null;
+    name: null;
+    source: null;
+    content: null;
+};
+export declare type OriginalSource = {
+    map: TraceMap;
+    sources: Sources[];
+    source: string;
+    content: string | null;
+};
+export declare type MapSource = {
+    map: TraceMap;
+    sources: Sources[];
+    source: string;
+    content: string | 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;

node_modules/@ampproject/remapping/dist/types/source-map.d.ts

+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;
+}

node_modules/@ampproject/remapping/dist/types/types.d.ts

+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;
+};

node_modules/@ampproject/remapping/package.json

+{
+  "name": "@ampproject/remapping",
+  "version": "2.2.0",
+  "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",
+  "typings": "dist/types/remapping.d.ts",
+  "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": "^0.1.0",
+    "@jridgewell/trace-mapping": "^0.3.9"
+  }
+}