UmdMainTemplatePlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
var ConcatSource = require("webpack-sources").ConcatSource;
var OriginalSource = require("webpack-sources").OriginalSource;
function accessorToObjectAccess(accessor) {
return accessor.map(function(a) {
return "[" + JSON.stringify(a) + "]";
}).join("");
}
function accessorAccess(base, accessor) {
accessor = [].concat(accessor);
return accessor.map(function(a, idx) {
a = base + accessorToObjectAccess(accessor.slice(0, idx + 1));
if(idx === accessor.length - 1) return a;
return a + " = " + a + " || {}";
}).join(", ");
}
function UmdMainTemplatePlugin(name, options) {
this.name = name;
this.optionalAmdExternalAsGlobal = options.optionalAmdExternalAsGlobal;
this.namedDefine = options.namedDefine;
this.auxiliaryComment = options.auxiliaryComment;
}
module.exports = UmdMainTemplatePlugin;
UmdMainTemplatePlugin.prototype.apply = function(compilation) {
var mainTemplate = compilation.mainTemplate;
compilation.templatesPlugin("render-with-entry", function(source, chunk, hash) {
var externals = chunk.modules.filter(function(m) {
return m.external;
});
var optionalExternals = [],
requiredExternals = [];
if(this.optionalAmdExternalAsGlobal) {
externals.forEach(function(m) {
if(m.optional) {
optionalExternals.push(m);
} else {
requiredExternals.push(m);
}
});
externals = requiredExternals.concat(optionalExternals);
} else {
requiredExternals = externals;
}
function replaceKeys(str) {
return mainTemplate.applyPluginsWaterfall("asset-path", str, {
hash: hash,
chunk: chunk
});
}
function externalsDepsArray(modules) {
return "[" + replaceKeys(modules.map(function(m) {
return JSON.stringify(typeof m.request === "object" ? m.request.amd : m.request);
}).join(", ")) + "]";
}
function externalsRootArray(modules) {
return replaceKeys(modules.map(function(m) {
var request = m.request;
if(typeof request === "object") request = request.root;
return "root" + accessorToObjectAccess([].concat(request));
}).join(", "));
}
function externalsRequireArray(type) {
return replaceKeys(externals.map(function(m) {
var expr;
var request = m.request;
if(typeof request === "object") request = request[type];
if(Array.isArray(request)) {
expr = "require(" + JSON.stringify(request[0]) + ")" + accessorToObjectAccess(request.slice(1));
} else
expr = "require(" + JSON.stringify(request) + ")";
if(m.optional) {
expr = "(function webpackLoadOptionalExternalModule() { try { return " + expr + "; } catch(e) {} }())";
}
return expr;
}).join(", "));
}
function externalsArguments(modules) {
return modules.map(function(m) {
return "__WEBPACK_EXTERNAL_MODULE_" + m.id + "__";
}).join(", ");
}
function libraryName(library) {
return JSON.stringify(replaceKeys([].concat(library).pop()));
}
var amdFactory;
if(optionalExternals.length > 0) {
amdFactory = "function webpackLoadOptionalExternalModuleAmd(" + externalsArguments(requiredExternals) + ") {\n" +
" return factory(" + (
requiredExternals.length > 0 ?
externalsArguments(requiredExternals) + ", " + externalsRootArray(optionalExternals) :
externalsRootArray(optionalExternals)
) + ");\n" +
" }";
} else {
amdFactory = "factory";
}
return new ConcatSource(new OriginalSource(
"(function webpackUniversalModuleDefinition(root, factory) {\n" +
(this.auxiliaryComment &&
typeof this.auxiliaryComment === "string" ?
" //" + this.auxiliaryComment + "\n" :
this.auxiliaryComment.commonjs2 ?
" //" + this.auxiliaryComment.commonjs2 + "\n" :
""
) +
" if(typeof exports === 'object' && typeof module === 'object')\n" +
" module.exports = factory(" + externalsRequireArray("commonjs2") + ");\n" +
(this.auxiliaryComment &&
typeof this.auxiliaryComment === "string" ?
" //" + this.auxiliaryComment + "\n" :
this.auxiliaryComment.amd ?
" //" + this.auxiliaryComment.amd + "\n" :
""
) +
" else if(typeof define === 'function' && define.amd)\n" +
(requiredExternals.length > 0 ?
(this.name && this.namedDefine === true ?
" define(" + libraryName(this.name) + ", " + externalsDepsArray(requiredExternals) + ", " + amdFactory + ");\n" :
" define(" + externalsDepsArray(requiredExternals) + ", " + amdFactory + ");\n"
) :
(this.name && this.namedDefine === true ?
" define(" + libraryName(this.name) + ", [], " + amdFactory + ");\n" :
" define([], " + amdFactory + ");\n"
)
) +
(this.name ?
(this.auxiliaryComment &&
typeof this.auxiliaryComment === "string" ?
" //" + this.auxiliaryComment + "\n" :
this.auxiliaryComment.commonjs ?
" //" + this.auxiliaryComment.commonjs + "\n" :
""
) +
" else if(typeof exports === 'object')\n" +
" exports[" + libraryName(this.name) + "] = factory(" + externalsRequireArray("commonjs") + ");\n" +
(this.auxiliaryComment &&
typeof this.auxiliaryComment === "string" ?
" //" + this.auxiliaryComment + "\n" :
this.auxiliaryComment.root ?
" //" + this.auxiliaryComment.root + "\n" :
""
) +
" else\n" +
" " + replaceKeys(accessorAccess("root", this.name)) + " = factory(" + externalsRootArray(externals) + ");\n" :
" else {\n" +
(externals.length > 0 ?
" var a = typeof exports === 'object' ? factory(" + externalsRequireArray("commonjs") + ") : factory(" + externalsRootArray(externals) + ");\n" :
" var a = factory();\n"
) +
" for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i];\n" +
" }\n"
) +
"})(this, function(" + externalsArguments(externals) + ") {\nreturn ", "webpack/universalModuleDefinition"), source, ";\n})");
}.bind(this));
mainTemplate.plugin("global-hash-paths", function(paths) {
if(this.name) paths = paths.concat(this.name);
return paths;
}.bind(this));
mainTemplate.plugin("hash", function(hash) {
hash.update("umd");
hash.update(this.name + "");
}.bind(this));
};