LibraryTemplatePlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
var SetVarMainTemplatePlugin = require("./SetVarMainTemplatePlugin");
function accessorToObjectAccess(accessor) {
return accessor.map(function(a) {
return "[" + JSON.stringify(a) + "]";
}).join("");
}
function accessorAccess(base, accessor, joinWith) {
accessor = [].concat(accessor);
return accessor.map(function(a, idx) {
a = base ?
base + accessorToObjectAccess(accessor.slice(0, idx + 1)) :
accessor[0] + accessorToObjectAccess(accessor.slice(1, idx + 1));
if(idx === accessor.length - 1) return a;
if(idx === 0 && typeof base === "undefined") return a + " = typeof " + a + " === \"object\" ? " + a + " : {}";
return a + " = " + a + " || {}";
}).join(joinWith || "; ");
}
function LibraryTemplatePlugin(name, target, umdNamedDefine, auxiliaryComment) {
this.name = name;
this.target = target;
this.umdNamedDefine = umdNamedDefine;
this.auxiliaryComment = auxiliaryComment;
}
module.exports = LibraryTemplatePlugin;
LibraryTemplatePlugin.prototype.apply = function(compiler) {
compiler.plugin("this-compilation", function(compilation) {
switch(this.target) {
case "var":
compilation.apply(new SetVarMainTemplatePlugin("var " + accessorAccess(false, this.name)));
break;
case "assign":
compilation.apply(new SetVarMainTemplatePlugin(accessorAccess(undefined, this.name)));
break;
case "this":
case "window":
case "global":
if(this.name)
compilation.apply(new SetVarMainTemplatePlugin(accessorAccess(this.target, this.name)));
else
compilation.apply(new SetVarMainTemplatePlugin(this.target, true));
break;
case "commonjs":
if(this.name)
compilation.apply(new SetVarMainTemplatePlugin(accessorAccess("exports", this.name)));
else
compilation.apply(new SetVarMainTemplatePlugin("exports", true));
break;
case "commonjs2":
case "commonjs-module":
compilation.apply(new SetVarMainTemplatePlugin("module.exports"));
break;
case "amd":
var AmdMainTemplatePlugin = require("./AmdMainTemplatePlugin");
compilation.apply(new AmdMainTemplatePlugin(this.name));
break;
case "umd":
case "umd2":
var UmdMainTemplatePlugin = require("./UmdMainTemplatePlugin");
compilation.apply(new UmdMainTemplatePlugin(this.name, {
optionalAmdExternalAsGlobal: this.target === "umd2",
namedDefine: this.umdNamedDefine,
auxiliaryComment: this.auxiliaryComment
}));
break;
case "jsonp":
var JsonpExportMainTemplatePlugin = require("./JsonpExportMainTemplatePlugin");
compilation.apply(new JsonpExportMainTemplatePlugin(this.name));
break;
default:
throw new Error(this.target + " is not a valid Library target");
}
}.bind(this));
};