Marc Mintel
5397309103
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57 lines
1.4 KiB
Plaintext
57 lines
1.4 KiB
Plaintext
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Natsu @xiaoxiaojx
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*/
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"use strict";
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const RuntimeGlobals = require("../RuntimeGlobals");
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const RuntimeModule = require("../RuntimeModule");
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const Template = require("../Template");
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/** @typedef {import("../Chunk")} Chunk */
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class CssMergeStyleSheetsRuntimeModule extends RuntimeModule {
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constructor() {
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super("css merge stylesheets");
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}
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/**
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* @returns {string | null} runtime code
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*/
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generate() {
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const { runtimeTemplate } = /** @type {import("../Compilation")} */ (
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this.compilation
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);
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return Template.asString([
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`${RuntimeGlobals.cssMergeStyleSheets} = ${runtimeTemplate.basicFunction(
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"sheets",
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[
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"var sheetsArray = Array.isArray(sheets) ? sheets : [sheets];",
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"var cssTexts = [];",
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"for (var i = 0; i < sheetsArray.length; i++) {",
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Template.indent([
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"var s = sheetsArray[i];",
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"if (!s) continue;",
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"if (typeof s === 'string') {",
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Template.indent("cssTexts.push(s);"),
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"} else if (s.cssRules) {",
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Template.indent([
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"var rules = s.cssRules;",
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"for (var j = 0; j < rules.length; j++) {",
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Template.indent("cssTexts.push(rules[j].cssText);"),
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"}"
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]),
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"}"
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]),
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"}",
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"return cssTexts.join('');"
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]
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)};`
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]);
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}
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}
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module.exports = CssMergeStyleSheetsRuntimeModule;
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