forked from zhurui/management
61 lines
2.0 KiB
JavaScript
61 lines
2.0 KiB
JavaScript
"use strict";
|
|
|
|
const path = require("path");
|
|
const utils = require("loader-utils");
|
|
|
|
const matchModuleImport = /^~([^\/]+|@[^\/]+[\/][^\/]+)$/;
|
|
|
|
/**
|
|
* When libsass tries to resolve an import, it uses a special algorithm.
|
|
* Since the sass-loader uses webpack to resolve the modules, we need to simulate that algorithm. This function
|
|
* returns an array of import paths to try. The last entry in the array is always the original url
|
|
* to enable straight-forward webpack.config aliases.
|
|
*
|
|
* @param {string} url
|
|
* @returns {Array<string>}
|
|
*/
|
|
function importsToResolve(url) {
|
|
const request = utils.urlToRequest(url);
|
|
// Keep in mind: ext can also be something like '.datepicker' when the true extension is omitted and the filename contains a dot.
|
|
// @see https://github.com/webpack-contrib/sass-loader/issues/167
|
|
const ext = path.extname(request);
|
|
|
|
if (matchModuleImport.test(url)) {
|
|
return [request, url];
|
|
}
|
|
|
|
// libsass' import algorithm works like this:
|
|
|
|
// In case there is a file extension...
|
|
// - If the file is a CSS-file, do not include it all, but just link it via @import url().
|
|
// - The exact file name must match (no auto-resolving of '_'-modules).
|
|
if (ext === ".css") {
|
|
return [];
|
|
}
|
|
if (ext === ".scss" || ext === ".sass") {
|
|
return [request, url];
|
|
}
|
|
|
|
// In case there is no file extension...
|
|
// - Prefer modules starting with '_'.
|
|
// - File extension precedence: .scss, .sass, .css.
|
|
const basename = path.basename(request);
|
|
|
|
if (basename.charAt(0) === "_") {
|
|
return [
|
|
`${ request }.scss`, `${ request }.sass`, `${ request }.css`,
|
|
url
|
|
];
|
|
}
|
|
|
|
const dirname = path.dirname(request);
|
|
|
|
return [
|
|
`${ dirname }/_${ basename }.scss`, `${ dirname }/_${ basename }.sass`, `${ dirname }/_${ basename }.css`,
|
|
`${ request }.scss`, `${ request }.sass`, `${ request }.css`,
|
|
url
|
|
];
|
|
}
|
|
|
|
module.exports = importsToResolve;
|