src/vs/nls.build.ts/load
export function load(name: string, req: AMDLoader.IRelativeRequire, load: AMDLoader.IPluginLoadCallback, config: AMDLoader.IConfigurationOptions): void {
	if (!name || name.length === 0) {
		load({ localize, getConfiguredDefaultLocale });
	} else {
		req([name + '.nls', name + '.nls.keys'], function (messages: string[], keys: string[]) {
			buildMap[name] = messages;
			buildMapKeys[name] = keys;
			load(messages);
		});
	}
}