pdf.js/external/webpack/pdfjsdev-loader.mjs

42 lines
1.4 KiB
JavaScript

/* 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;
}