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Merge pull request #1279 from NativeScript/hdeshev/global-lazy

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More reliable global objects lazy loader.
This commit is contained in:
Hristo Deshev
2015-12-22 18:17:34 +02:00
parent d5a90b4ad2 18c75d2ba1
commit 9919eaf5fa
1 changed files with 11 additions and 4 deletions
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15
globals/globals.ts
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@@ -31,17 +31,24 @@ global.registerModule("ui/dialogs", () => require("ui/dialogs"));
global.registerModule("../xhr/xhr", () => require("../xhr/xhr"));
global.registerModule("fetch", () => require("fetch"));
function registerOnGlobalContext(name, module) {
const __tnsGlobalMergedModules = new Map<string, boolean>();
function registerOnGlobalContext(name: string, module: string): void {
Object.defineProperty(global, name, {
get: function () {
// We do not need to cache require() call since it is already cached in the runtime.
let m = global.loadModule(module);
global.moduleMerge(m, global);
if (!__tnsGlobalMergedModules.has(module)) {
__tnsGlobalMergedModules.set(module, true);
global.moduleMerge(m, global);
}
// Redefine the property to make sure the above code is executed only once.
Object.defineProperty(this, name, { value: m[name], configurable: true, writable: true });
let resolvedValue = m[name];
Object.defineProperty(this, name, { value: resolvedValue, configurable: true, writable: true });
return m[name];
return resolvedValue;
},
configurable: true
});