NativeScript/nativescript-core/globals/core.ts

// Required by TypeScript compiler
import "../ts-helpers";
import "../register-module-helpers";

// This method iterates all the keys in the source exports object and copies them to the destination exports one.
// Note: the method will not check for naming collisions and will override any already existing entries in the destination exports.
global.moduleMerge = function (sourceExports: any, destExports: any) {
	for (let key in sourceExports) {
		destExports[key] = sourceExports[key];
	}
};

global.zonedCallback = function (callback: Function): Function {
	if ((<any>global).zone) {
		// Zone v0.5.* style callback wrapping
		return (<any>global).zone.bind(callback);
	}
	if ((<any>global).Zone) {
		// Zone v0.6.* style callback wrapping
		return (<any>global).Zone.current.wrap(callback);
	} else {
		return callback;
	}
};

(<any>global).System = {
	import(path) {
		return new Promise((resolve, reject) => {
			try {
				resolve(global.require(path));
			} catch (e) {
				reject(e);
			}
		});
	},
};