mirror of https://github.com/webpack/webpack.git
				
				
				
			
		
			
				
	
	
		
			120 lines
		
	
	
		
			3.5 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			120 lines
		
	
	
		
			3.5 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
/*
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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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"use strict";
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const SetVarMainTemplatePlugin = require("./SetVarMainTemplatePlugin");
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const accessorToObjectAccess = accessor => {
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	return accessor
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		.map(a => {
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			return `[${JSON.stringify(a)}]`;
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		})
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		.join("");
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};
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const accessorAccess = (base, accessor, joinWith) => {
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	accessor = [].concat(accessor);
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	return accessor
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		.map((a, idx) => {
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			a = base
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				? base + accessorToObjectAccess(accessor.slice(0, idx + 1))
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				: accessor[0] + accessorToObjectAccess(accessor.slice(1, idx + 1));
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			if (idx === accessor.length - 1) return a;
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			if (idx === 0 && typeof base === "undefined")
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				return `${a} = typeof ${a} === "object" ? ${a} : {}`;
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			return `${a} = ${a} || {}`;
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		})
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		.join(joinWith || "; ");
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};
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class LibraryTemplatePlugin {
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	constructor(name, target, umdNamedDefine, auxiliaryComment, exportProperty) {
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		this.name = name;
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		this.target = target;
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		this.umdNamedDefine = umdNamedDefine;
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		this.auxiliaryComment = auxiliaryComment;
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		this.exportProperty = exportProperty;
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	}
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	apply(compiler) {
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		compiler.hooks.thisCompilation.tap("LibraryTemplatePlugin", compilation => {
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			if (this.exportProperty) {
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				var ExportPropertyMainTemplatePlugin = require("./ExportPropertyMainTemplatePlugin");
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				new ExportPropertyMainTemplatePlugin(this.exportProperty).apply(
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					compilation
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				);
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			}
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			switch (this.target) {
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				case "var":
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					new SetVarMainTemplatePlugin(
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						`var ${accessorAccess(false, this.name)}`
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					).apply(compilation);
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					break;
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				case "assign":
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					new SetVarMainTemplatePlugin(
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						accessorAccess(undefined, this.name)
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					).apply(compilation);
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					break;
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				case "this":
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				case "self":
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				case "window":
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					if (this.name)
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						new SetVarMainTemplatePlugin(
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							accessorAccess(this.target, this.name)
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						).apply(compilation);
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					else
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						new SetVarMainTemplatePlugin(this.target, true).apply(compilation);
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					break;
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				case "global":
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					if (this.name)
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						new SetVarMainTemplatePlugin(
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							accessorAccess(
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								compilation.runtimeTemplate.outputOptions.globalObject,
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								this.name
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							)
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						).apply(compilation);
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					else
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						new SetVarMainTemplatePlugin(
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							compilation.runtimeTemplate.outputOptions.globalObject,
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							true
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						).apply(compilation);
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					break;
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				case "commonjs":
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					if (this.name)
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						new SetVarMainTemplatePlugin(
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							accessorAccess("exports", this.name)
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						).apply(compilation);
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					else new SetVarMainTemplatePlugin("exports", true).apply(compilation);
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					break;
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				case "commonjs2":
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				case "commonjs-module":
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					new SetVarMainTemplatePlugin("module.exports").apply(compilation);
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					break;
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				case "amd":
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					var AmdMainTemplatePlugin = require("./AmdMainTemplatePlugin");
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					new AmdMainTemplatePlugin(this.name).apply(compilation);
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					break;
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				case "umd":
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				case "umd2":
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					var UmdMainTemplatePlugin = require("./UmdMainTemplatePlugin");
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					new UmdMainTemplatePlugin(this.name, {
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						optionalAmdExternalAsGlobal: this.target === "umd2",
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						namedDefine: this.umdNamedDefine,
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						auxiliaryComment: this.auxiliaryComment
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					}).apply(compilation);
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					break;
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				case "jsonp":
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					var JsonpExportMainTemplatePlugin = require("./web/JsonpExportMainTemplatePlugin");
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					new JsonpExportMainTemplatePlugin(this.name).apply(compilation);
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					break;
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				default:
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					throw new Error(`${this.target} is not a valid Library target`);
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			}
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		});
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	}
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}
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module.exports = LibraryTemplatePlugin;
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