initial commit of actions

github/codeql-action-v1/node_modules/ava/lib/ipc-flow-control.cjs

@@ -0,0 +1,40 @@
+'use strict';
+function controlFlow(channel) {
+	let errored = false;
+	let deliverImmediately = true;
+
+	const backlog = [];
+	const deliverNext = error => {
+		if (error !== null) {
+			errored = true;
+		}
+
+		if (errored || !channel.connected) {
+			backlog.length = 0; // Free memory.
+			return; // We can't send.
+		}
+
+		let ok = true;
+		while (ok && backlog.length > 0) { // Stop sending after backpressure.
+			ok = channel.send(backlog.shift(), deliverNext);
+		}
+
+		// Re-enable immediate delivery if there is no backpressure and the backlog
+		// has been cleared.
+		deliverImmediately = ok && backlog.length === 0;
+	};
+
+	return message => {
+		if (errored || !channel.connected) {
+			return;
+		}
+
+		if (deliverImmediately) {
+			deliverImmediately = channel.send(message, deliverNext);
+		} else {
+			backlog.push(message);
+		}
+	};
+}
+
+exports.controlFlow = controlFlow;