29 lines
1 KiB
JavaScript
29 lines
1 KiB
JavaScript
"use strict";
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/**
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* Creates new custom importers that use the given `resourcePath` if libsass calls the custom importer with `prev`
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* being 'stdin'.
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*
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* Why do we need this? We have to use the `data` option of node-sass in order to compile our sass because
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* the `resourcePath` might not be an actual file on disk. When using the `data` option, libsass uses the string
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* 'stdin' instead of a filename.
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*
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* We have to fix this behavior in order to provide a consistent experience to the webpack user.
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*
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* @param {function|Array<function>} importer
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* @param {string} resourcePath
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* @returns {Array<function>}
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*/
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function proxyCustomImporters(importer, resourcePath) {
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return [].concat(importer).map((importer) => {
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return function (url, prev, done) {
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return importer.apply(
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this, // eslint-disable-line no-invalid-this
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Array.from(arguments)
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.map((arg, i) => i === 1 && arg === "stdin" ? resourcePath : arg)
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);
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};
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});
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}
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module.exports = proxyCustomImporters;
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