DelegatedModuleFactoryPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const DelegatedModule = require("./DelegatedModule");
// options.source
// options.type
// options.context
// options.scope
// options.content
class DelegatedModuleFactoryPlugin {
constructor(options) {
this.options = options;
options.type = options.type || "require";
options.extensions = options.extensions || [
"",
".wasm",
".mjs",
".js",
".json"
];
}
apply(normalModuleFactory) {
const scope = this.options.scope;
if (scope) {
normalModuleFactory.hooks.factory.tap(
"DelegatedModuleFactoryPlugin",
factory => (data, callback) => {
const dependency = data.dependencies[0];
const request = dependency.request;
if (request && request.indexOf(scope + "/") === 0) {
const innerRequest = "." + request.substr(scope.length);
let resolved;
if (innerRequest in this.options.content) {
resolved = this.options.content[innerRequest];
return callback(
null,
new DelegatedModule(
this.options.source,
resolved,
this.options.type,
innerRequest,
request
)
);
}
for (let i = 0; i < this.options.extensions.length; i++) {
const extension = this.options.extensions[i];
const requestPlusExt = innerRequest + extension;
if (requestPlusExt in this.options.content) {
resolved = this.options.content[requestPlusExt];
return callback(
null,
new DelegatedModule(
this.options.source,
resolved,
this.options.type,
requestPlusExt,
request + extension
)
);
}
}
}
return factory(data, callback);
}
);
} else {
normalModuleFactory.hooks.module.tap(
"DelegatedModuleFactoryPlugin",
module => {
if (module.libIdent) {
const request = module.libIdent(this.options);
if (request && request in this.options.content) {
const resolved = this.options.content[request];
return new DelegatedModule(
this.options.source,
resolved,
this.options.type,
request,
module
);
}
}
return module;
}
);
}
}
}
module.exports = DelegatedModuleFactoryPlugin;