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40 lines
1.0 KiB
40 lines
1.0 KiB
'use strict'; |
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var path = require('path'); |
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var loaderUtils = require('loader-utils'); |
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var process = require('./process'); |
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/** |
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* Webpack loader that manipulates the source-map of a preceding loader. |
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* @this {object} The loader context |
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* @param {string} content The content |
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* @param {object} sourceMap The source-map |
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* @returns {string|String} |
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*/ |
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function loader(content, sourceMap) { |
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/* jshint validthis:true */ |
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// loader result is cacheable |
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this.cacheable(); |
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// webpack 1: prefer loader query, else options object |
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// webpack 2: prefer loader options |
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// webpack 3: deprecate loader.options object |
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// webpack 4: loader.options no longer defined |
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var options = Object.assign( |
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{}, |
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this.options && this.options.adjustSourcemapLoader, |
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loaderUtils.getOptions(this), |
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{sep: path.sep} |
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); |
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// process the source-map |
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var outputMap = process(this, options, sourceMap); |
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// need to use callback when there are multiple arguments |
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this.callback(null, content, outputMap); |
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} |
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module.exports = loader;
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