hostMain.app.cash.zipline.internal.defineJs.kt Maven / Gradle / Ivy
/*
* Copyright (C) 2021 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package app.cash.zipline.internal
internal const val CURRENT_MODULE_ID = "app_cash_zipline_currentModuleId"
/**
* Implements an AMD module loader for Kotlin/JS AMD modules running on QuickJS.
* https://github.com/amdjs/amdjs-api/blob/master/AMD.md
*/
internal const val DEFINE_JS =
"""
(function initJsModuleApi() {
// Maps module IDs (like './kotlin-kotlin-stdlib-js-ir' or 'export') to their exports.
var idToExports = {};
// Retrieve an exported module. This doesn't need to be a global function, but it's convenient
// for callers who want access to a library they just loaded.
globalThis.require = function(id) {
var resolved = idToExports[id];
if (!resolved) {
throw Error('"' + id + '" not found in ' + JSON.stringify(Object.keys(idToExports)));
}
return resolved;
}
// This function accepts three arguments:
// id: an optional string. If absent, use the currently-loading file name.
// dependencies: an optional array of IDs, empty if absent.
// factory: user code that consumes and exports dependencies. The arguments to this function
// correspond 1:1 with the dependency names.
globalThis.define = function() {
var args = Array.from(arguments);
var factory = args.pop();
var dependencies = (args.length > 0) ? args.pop() : [];
var id = (args.length > 0) ? args.pop() : globalThis.$CURRENT_MODULE_ID;
var exports = {};
var args = dependencies.map(dependency => {
if (dependency == 'exports') {
return exports;
} else if (dependency == 'require') {
return globalThis.require;
} else {
return globalThis.require(dependency);
}
});
var result = factory(...args);
idToExports[id] = result || exports;
};
// By convention, we set 'define.amd' to an object to declare we confirm to the AMD spec.
globalThis.define.amd = {};
})();
"""