/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the Source EULA. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

const es = require('event-stream');

/** Ugly hack for gulp-tsb */
function handleDeletions() {
	return es.mapSync(f => {
		if (/\.ts$/.test(f.relative) && !f.contents) {
			f.contents = Buffer.from('');
			f.stat = { mtime: new Date() };
		}

		return f;
	});
}

let watch = void 0;

// Disabled due to https://github.com/Microsoft/vscode/issues/36214
// if (!process.env['VSCODE_USE_LEGACY_WATCH']) {
// 	try {
// 		watch = require('./watch-nsfw');
// 	} catch (err) {
// 		console.warn('Could not load our cross platform file watcher: ' + err.toString());
// 		console.warn('Falling back to our platform specific watcher...');
// 	}
// }

if (!watch) {
	watch = process.platform === 'win32' ? require('./watch-win32') : require('gulp-watch');
}

module.exports = function () {
	return watch.apply(null, arguments)
		.pipe(handleDeletions());
};