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77 lines
2.2 KiB
77 lines
2.2 KiB
4 years ago
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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// css base code, injected by the css-loader
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module.exports = function(useSourceMap) {
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var list = [];
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// return the list of modules as css string
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list.toString = function toString() {
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return this.map(function (item) {
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var content = cssWithMappingToString(item, useSourceMap);
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if(item[2]) {
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return "@media " + item[2] + "{" + content + "}";
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} else {
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return content;
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}
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}).join("");
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};
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// import a list of modules into the list
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list.i = function(modules, mediaQuery) {
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if(typeof modules === "string")
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modules = [[null, modules, ""]];
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var alreadyImportedModules = {};
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for(var i = 0; i < this.length; i++) {
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var id = this[i][0];
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if(typeof id === "number")
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alreadyImportedModules[id] = true;
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}
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for(i = 0; i < modules.length; i++) {
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var item = modules[i];
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// skip already imported module
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// this implementation is not 100% perfect for weird media query combinations
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// when a module is imported multiple times with different media queries.
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// I hope this will never occur (Hey this way we have smaller bundles)
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if(typeof item[0] !== "number" || !alreadyImportedModules[item[0]]) {
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if(mediaQuery && !item[2]) {
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item[2] = mediaQuery;
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} else if(mediaQuery) {
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item[2] = "(" + item[2] + ") and (" + mediaQuery + ")";
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}
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list.push(item);
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}
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}
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};
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return list;
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};
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function cssWithMappingToString(item, useSourceMap) {
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var content = item[1] || '';
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var cssMapping = item[3];
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if (!cssMapping) {
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return content;
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}
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if (useSourceMap && typeof btoa === 'function') {
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var sourceMapping = toComment(cssMapping);
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var sourceURLs = cssMapping.sources.map(function (source) {
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return '/*# sourceURL=' + cssMapping.sourceRoot + source + ' */'
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});
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return [content].concat(sourceURLs).concat([sourceMapping]).join('\n');
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}
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return [content].join('\n');
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}
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// Adapted from convert-source-map (MIT)
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function toComment(sourceMap) {
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// eslint-disable-next-line no-undef
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var base64 = btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap))));
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var data = 'sourceMappingURL=data:application/json;charset=utf-8;base64,' + base64;
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return '/*# ' + data + ' */';
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}
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