fix-swh-source-maps-webpack-plugin.js
No OneTemporary
Actions

Size

1 KB

Subscribers

None

fix-swh-source-maps-webpack-plugin.js
View Options

	/**
	* Copyright (C) 2019 The Software Heritage developers
	* See the AUTHORS file at the top-level directory of this distribution
	* License: GNU Affero General Public License version 3, or any later version
	* See top-level LICENSE file for more information
	*/

	'use strict';

	// This plugin modifies the generated asset sourcemaps on the fly
	// in order to be successfully loaded by Firefox.
	// The following error is reported without that:
	// Source map error: TypeError: Invalid URL: webpack://swh.[name]/...

	class FixSwhSourceMapsPlugin {

	constructor() {
	this.sourceMapRegexp = /\.map($\|\?)/i;
	}

	apply(compiler) {
	compiler.hooks.compilation.tap('FixSwhSourceMapsPlugin', compilation => {
	const {Compilation, sources} = require('webpack');
	compilation.hooks.processAssets.tap(
	{
	name: 'FixSwhSourceMapsPlugin',
	stage: Compilation.PROCESS_ASSETS_STAGE_ANALYSE
	},
	() => {
	Object.keys(compilation.assets).filter(key => {
	return this.sourceMapRegexp.test(key);
	}).forEach(key => {
	let bundleName = key.replace(/^js\//, '');
	bundleName = bundleName.replace(/^css\//, '');
	const pos = bundleName.indexOf('.');
	bundleName = bundleName.slice(0, pos);
	const asset = compilation.assets[key];
	const source = asset.source().replace(/swh.\[name\]/g, 'swh.' + bundleName);
	compilation.updateAsset(key, new sources.RawSource(source));
	});
	}
	);
	});
	}

	};

	module.exports = FixSwhSourceMapsPlugin;