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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/sass-loader/lib/webpackImporter.js
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-rw-r--r--node_modules/sass-loader/lib/webpackImporter.js73
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diff --git a/node_modules/sass-loader/lib/webpackImporter.js b/node_modules/sass-loader/lib/webpackImporter.js
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+"use strict";
+
+/**
+ * @name PromisedResolve
+ * @type {Function}
+ * @param {string} dir
+ * @param {string} request
+ * @returns Promise
+ */
+
+/**
+ * @name Importer
+ * @type {Function}
+ * @param {string} url
+ * @param {string} prev
+ * @param {Function<Error, string>} done
+ */
+
+const path = require("path");
+const utils = require("loader-utils");
+const tail = require("lodash.tail");
+const importsToResolve = require("./importsToResolve");
+
+const matchCss = /\.css$/;
+
+/**
+ * Returns an importer that uses webpack's resolving algorithm.
+ *
+ * It's important that the returned function has the correct number of arguments
+ * (based on whether the call is sync or async) because otherwise node-sass doesn't exit.
+ *
+ * @param {string} resourcePath
+ * @param {PromisedResolve} resolve
+ * @param {Function<string>} addNormalizedDependency
+ * @returns {Importer}
+ */
+function webpackImporter(resourcePath, resolve, addNormalizedDependency) {
+ function dirContextFrom(fileContext) {
+ return path.dirname(
+ // The first file is 'stdin' when we're using the data option
+ fileContext === "stdin" ? resourcePath : fileContext
+ );
+ }
+
+ function startResolving(dir, importsToResolve) {
+ return importsToResolve.length === 0 ?
+ Promise.reject() :
+ resolve(dir, importsToResolve[0])
+ .then(resolvedFile => {
+ // Add the resolvedFilename as dependency. Although we're also using stats.includedFiles, this might come
+ // in handy when an error occurs. In this case, we don't get stats.includedFiles from node-sass.
+ addNormalizedDependency(resolvedFile);
+ return {
+ // By removing the CSS file extension, we trigger node-sass to include the CSS file instead of just linking it.
+ file: resolvedFile.replace(matchCss, "")
+ };
+ }, () => startResolving(
+ dir,
+ tail(importsToResolve)
+ ));
+ }
+
+ return (url, prev, done) => {
+ startResolving(
+ dirContextFrom(prev),
+ importsToResolve(utils.urlToRequest(url))
+ ) // Catch all resolving errors, return the original file and pass responsibility back to other custom importers
+ .catch(() => ({ file: url }))
+ .then(done);
+ };
+}
+
+module.exports = webpackImporter;