Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.

Scripts/node_modules/end-of-stream/index.js

@@ -0,0 +1,94 @@
+var once = require('once');
+
+var noop = function() {};
+
+var isRequest = function(stream) {
+	return stream.setHeader && typeof stream.abort === 'function';
+};
+
+var isChildProcess = function(stream) {
+	return stream.stdio && Array.isArray(stream.stdio) && stream.stdio.length === 3
+};
+
+var eos = function(stream, opts, callback) {
+	if (typeof opts === 'function') return eos(stream, null, opts);
+	if (!opts) opts = {};
+
+	callback = once(callback || noop);
+
+	var ws = stream._writableState;
+	var rs = stream._readableState;
+	var readable = opts.readable || (opts.readable !== false && stream.readable);
+	var writable = opts.writable || (opts.writable !== false && stream.writable);
+	var cancelled = false;
+
+	var onlegacyfinish = function() {
+		if (!stream.writable) onfinish();
+	};
+
+	var onfinish = function() {
+		writable = false;
+		if (!readable) callback.call(stream);
+	};
+
+	var onend = function() {
+		readable = false;
+		if (!writable) callback.call(stream);
+	};
+
+	var onexit = function(exitCode) {
+		callback.call(stream, exitCode ? new Error('exited with error code: ' + exitCode) : null);
+	};
+
+	var onerror = function(err) {
+		callback.call(stream, err);
+	};
+
+	var onclose = function() {
+		process.nextTick(onclosenexttick);
+	};
+
+	var onclosenexttick = function() {
+		if (cancelled) return;
+		if (readable && !(rs && (rs.ended && !rs.destroyed))) return callback.call(stream, new Error('premature close'));
+		if (writable && !(ws && (ws.ended && !ws.destroyed))) return callback.call(stream, new Error('premature close'));
+	};
+
+	var onrequest = function() {
+		stream.req.on('finish', onfinish);
+	};
+
+	if (isRequest(stream)) {
+		stream.on('complete', onfinish);
+		stream.on('abort', onclose);
+		if (stream.req) onrequest();
+		else stream.on('request', onrequest);
+	} else if (writable && !ws) { // legacy streams
+		stream.on('end', onlegacyfinish);
+		stream.on('close', onlegacyfinish);
+	}
+
+	if (isChildProcess(stream)) stream.on('exit', onexit);
+
+	stream.on('end', onend);
+	stream.on('finish', onfinish);
+	if (opts.error !== false) stream.on('error', onerror);
+	stream.on('close', onclose);
+
+	return function() {
+		cancelled = true;
+		stream.removeListener('complete', onfinish);
+		stream.removeListener('abort', onclose);
+		stream.removeListener('request', onrequest);
+		if (stream.req) stream.req.removeListener('finish', onfinish);
+		stream.removeListener('end', onlegacyfinish);
+		stream.removeListener('close', onlegacyfinish);
+		stream.removeListener('finish', onfinish);
+		stream.removeListener('exit', onexit);
+		stream.removeListener('end', onend);
+		stream.removeListener('error', onerror);
+		stream.removeListener('close', onclose);
+	};
+};
+
+module.exports = eos;