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- /*
- MIT License http://www.opensource.org/licenses/mit-license.php
- Author Tobias Koppers @sokra
- */
- "use strict";
- const Source = require("./Source");
- /** @typedef {import("./Source").HashLike} HashLike */
- /** @typedef {import("./Source").MapOptions} MapOptions */
- /** @typedef {import("./Source").RawSourceMap} RawSourceMap */
- /** @typedef {import("./Source").SourceAndMap} SourceAndMap */
- /** @typedef {import("./Source").SourceValue} SourceValue */
- /**
- * @typedef {object} SourceLike
- * @property {() => SourceValue} source source
- * @property {(() => Buffer)=} buffer buffer
- * @property {(() => number)=} size size
- * @property {((options?: MapOptions) => RawSourceMap | null)=} map map
- * @property {((options?: MapOptions) => SourceAndMap)=} sourceAndMap source and map
- * @property {((hash: HashLike) => void)=} updateHash hash updater
- */
- class CompatSource extends Source {
- /**
- * @param {SourceLike} sourceLike source like
- * @returns {Source} source
- */
- static from(sourceLike) {
- return sourceLike instanceof Source
- ? sourceLike
- : new CompatSource(sourceLike);
- }
- /**
- * @param {SourceLike} sourceLike source like
- */
- constructor(sourceLike) {
- super();
- this._sourceLike = sourceLike;
- }
- /**
- * @returns {SourceValue} source
- */
- source() {
- return this._sourceLike.source();
- }
- buffer() {
- if (typeof this._sourceLike.buffer === "function") {
- return this._sourceLike.buffer();
- }
- return super.buffer();
- }
- size() {
- if (typeof this._sourceLike.size === "function") {
- return this._sourceLike.size();
- }
- return super.size();
- }
- /**
- * @param {MapOptions=} options map options
- * @returns {RawSourceMap | null} map
- */
- map(options) {
- if (typeof this._sourceLike.map === "function") {
- return this._sourceLike.map(options);
- }
- return super.map(options);
- }
- /**
- * @param {MapOptions=} options map options
- * @returns {SourceAndMap} source and map
- */
- sourceAndMap(options) {
- if (typeof this._sourceLike.sourceAndMap === "function") {
- return this._sourceLike.sourceAndMap(options);
- }
- return super.sourceAndMap(options);
- }
- /**
- * @param {HashLike} hash hash
- * @returns {void}
- */
- updateHash(hash) {
- if (typeof this._sourceLike.updateHash === "function") {
- return this._sourceLike.updateHash(hash);
- }
- if (typeof this._sourceLike.map === "function") {
- throw new Error(
- "A Source-like object with a 'map' method must also provide an 'updateHash' method",
- );
- }
- hash.update(this.buffer());
- }
- }
- module.exports = CompatSource;
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