githubmirror/pdf.js

external/webpack/pdfjsdev-loader.mjs

41 строка1 KB

Jonas Jenwald

[ESM] Convert the `external/builder/`-folder to use standard modules

11 июл 2023, 12:38

11 июл 2023, 12:385174232

/* Copyright 2017 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import path from "path";
import { preprocessPDFJSCode } from "../builder/preprocessor2.mjs";

export default function (source) {
  // Options must be specified, ignoring request if not.
  if (!this.query || typeof this.query !== "object") {
    return source;
  }
  this.cacheable();

  const filePath = this.resourcePath;
  const context = this.rootContext;
  const sourcePath = path.relative(context, filePath).split(path.sep).join("/");

  const ctx = Object.create(this.query);
  ctx.sourceMap = true;
  ctx.sourceFile = sourcePath;

  const callback = this.callback;
  const sourceAndMap = preprocessPDFJSCode(ctx, source);
  const map = sourceAndMap.map.toJSON();
  // escodegen does not embed source -- setting map's sourcesContent.
  map.sourcesContent = [source];
  callback(null, sourceAndMap.code, map);
  return undefined;
}