import {
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AnyMap,
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originalPositionFor,
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generatedPositionFor,
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allGeneratedPositionsFor,
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eachMapping,
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encodedMappings,
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sourceContentFor,
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} from '@jridgewell/trace-mapping';
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import {
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GenMapping,
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maybeAddMapping,
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toDecodedMap,
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toEncodedMap,
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setSourceContent,
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fromMap,
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} from '@jridgewell/gen-mapping';
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import type {
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TraceMap,
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SourceMapInput,
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SectionedSourceMapInput,
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DecodedSourceMap,
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} from '@jridgewell/trace-mapping';
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export type { TraceMap, SourceMapInput, SectionedSourceMapInput, DecodedSourceMap };
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import type { Mapping, EncodedSourceMap } from '@jridgewell/gen-mapping';
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export type { Mapping, EncodedSourceMap };
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export class SourceMapConsumer {
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declare private _map: TraceMap;
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declare file: TraceMap['file'];
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declare names: TraceMap['names'];
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declare sourceRoot: TraceMap['sourceRoot'];
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declare sources: TraceMap['sources'];
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declare sourcesContent: TraceMap['sourcesContent'];
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declare version: TraceMap['version'];
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constructor(
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map: ConstructorParameters<typeof AnyMap>[0],
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mapUrl?: ConstructorParameters<typeof AnyMap>[1],
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) {
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const trace = (this._map = new AnyMap(map, mapUrl));
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this.file = trace.file;
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this.names = trace.names;
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this.sourceRoot = trace.sourceRoot;
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this.sources = trace.resolvedSources;
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this.sourcesContent = trace.sourcesContent;
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this.version = trace.version;
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}
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static fromSourceMap(map: SourceMapGenerator, mapUrl?: Parameters<typeof AnyMap>[1]) {
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// This is more performant if we receive
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// a @jridgewell/source-map SourceMapGenerator
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if (map.toDecodedMap) {
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return new SourceMapConsumer(map.toDecodedMap() as SectionedSourceMapInput, mapUrl);
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}
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// This is a fallback for `source-map` and `source-map-js`
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return new SourceMapConsumer(map.toJSON() as SectionedSourceMapInput, mapUrl);
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}
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get mappings(): string {
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return encodedMappings(this._map);
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}
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originalPositionFor(
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needle: Parameters<typeof originalPositionFor>[1],
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): ReturnType<typeof originalPositionFor> {
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return originalPositionFor(this._map, needle);
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}
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generatedPositionFor(
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originalPosition: Parameters<typeof generatedPositionFor>[1],
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): ReturnType<typeof generatedPositionFor> {
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return generatedPositionFor(this._map, originalPosition);
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}
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allGeneratedPositionsFor(
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originalPosition: Parameters<typeof generatedPositionFor>[1],
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): ReturnType<typeof generatedPositionFor>[] {
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return allGeneratedPositionsFor(this._map, originalPosition);
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}
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hasContentsOfAllSources(): boolean {
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if (!this.sourcesContent || this.sourcesContent.length !== this.sources.length) {
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return false;
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}
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for (const content of this.sourcesContent) {
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if (content == null) {
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return false;
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}
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}
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return true;
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}
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sourceContentFor(source: string, nullOnMissing?: boolean): string | null {
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const sourceContent = sourceContentFor(this._map, source);
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if (sourceContent != null) {
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return sourceContent;
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}
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if (nullOnMissing) {
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return null;
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}
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throw new Error(`"${source}" is not in the SourceMap.`);
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}
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eachMapping(
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callback: Parameters<typeof eachMapping>[1],
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context?: any /*, order?: number*/,
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): void {
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// order is ignored as @jridgewell/trace-map doesn't implement it
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eachMapping(this._map, context ? callback.bind(context) : callback);
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}
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destroy() {
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// noop.
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}
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}
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export class SourceMapGenerator {
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declare private _map: GenMapping;
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constructor(opts: ConstructorParameters<typeof GenMapping>[0] | GenMapping) {
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// TODO :: should this be duck-typed ?
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this._map = opts instanceof GenMapping ? opts : new GenMapping(opts);
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}
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static fromSourceMap(consumer: SourceMapConsumer) {
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return new SourceMapGenerator(fromMap(consumer));
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}
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addMapping(mapping: Parameters<typeof maybeAddMapping>[1]): ReturnType<typeof maybeAddMapping> {
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maybeAddMapping(this._map, mapping);
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}
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setSourceContent(
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source: Parameters<typeof setSourceContent>[1],
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content: Parameters<typeof setSourceContent>[2],
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): ReturnType<typeof setSourceContent> {
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setSourceContent(this._map, source, content);
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}
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toJSON(): ReturnType<typeof toEncodedMap> {
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return toEncodedMap(this._map);
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}
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toString(): string {
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return JSON.stringify(this.toJSON());
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}
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toDecodedMap(): ReturnType<typeof toDecodedMap> {
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return toDecodedMap(this._map);
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}
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}
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