mirror of https://github.com/webpack/webpack.git
88 lines
2.7 KiB
JavaScript
88 lines
2.7 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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function accessorToObjectAccess(accessor) {
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return accessor.map((a) => {
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return `[${JSON.stringify(a)}]`;
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}).join("");
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}
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function accessorAccess(base, accessor, joinWith) {
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accessor = [].concat(accessor);
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return accessor.map((a, idx) => {
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a = base ?
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base + accessorToObjectAccess(accessor.slice(0, idx + 1)) :
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accessor[0] + accessorToObjectAccess(accessor.slice(1, idx + 1));
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if(idx === accessor.length - 1) return a;
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if(idx === 0 && typeof base === "undefined") return `${a} = typeof ${a} === "object" ? ${a} : {}`;
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return `${a} = ${a} || {}`;
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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) {
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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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}
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apply(compiler) {
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compiler.plugin("this-compilation", (compilation) => {
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switch(this.target) {
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case "var":
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compilation.apply(new SetVarMainTemplatePlugin(`var ${accessorAccess(false, this.name)}`));
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break;
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case "assign":
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compilation.apply(new SetVarMainTemplatePlugin(accessorAccess(undefined, this.name)));
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break;
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case "this":
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case "window":
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case "global":
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if(this.name)
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compilation.apply(new SetVarMainTemplatePlugin(accessorAccess(this.target, this.name)));
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else
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compilation.apply(new SetVarMainTemplatePlugin(this.target, true));
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break;
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case "commonjs":
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if(this.name)
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compilation.apply(new SetVarMainTemplatePlugin(accessorAccess("exports", this.name)));
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else
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compilation.apply(new SetVarMainTemplatePlugin("exports", true));
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break;
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case "commonjs2":
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case "commonjs-module":
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compilation.apply(new SetVarMainTemplatePlugin("module.exports"));
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break;
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case "amd":
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var AmdMainTemplatePlugin = require("./AmdMainTemplatePlugin");
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compilation.apply(new AmdMainTemplatePlugin(this.name));
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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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compilation.apply(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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}));
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break;
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case "jsonp":
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var JsonpExportMainTemplatePlugin = require("./JsonpExportMainTemplatePlugin");
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compilation.apply(new JsonpExportMainTemplatePlugin(this.name));
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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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