Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

apps/desktop/electron/terminal-output-gate.ts

@@ -0,0 +1,62 @@
+export interface TerminalExitPayload {
+  code: number | null
+  signal: string | null
+}
+
+interface TerminalOutputGateOptions {
+  onExitFlushed: () => void
+  sendData: (data: string) => void
+  sendExit: (payload: TerminalExitPayload) => void
+}
+
+const MAX_PENDING_OUTPUT = 1024 * 1024
+
+export function createTerminalOutputGate({ onExitFlushed, sendData, sendExit }: TerminalOutputGateOptions) {
+  let attached = false
+  let pendingData = ''
+  let pendingExit: TerminalExitPayload | null = null
+
+  const flushExit = (payload: TerminalExitPayload) => {
+    sendExit(payload)
+    onExitFlushed()
+  }
+
+  return {
+    attach(): void {
+      if (attached) {
+        return
+      }
+
+      attached = true
+
+      if (pendingData) {
+        sendData(pendingData)
+        pendingData = ''
+      }
+
+      if (pendingExit) {
+        const payload = pendingExit
+        pendingExit = null
+        flushExit(payload)
+      }
+    },
+    data(chunk: string): void {
+      if (attached) {
+        sendData(chunk)
+
+        return
+      }
+
+      pendingData = `${pendingData}${chunk}`.slice(-MAX_PENDING_OUTPUT)
+    },
+    exit(payload: TerminalExitPayload): void {
+      if (attached) {
+        flushExit(payload)
+
+        return
+      }
+
+      pendingExit = payload
+    }
+  }
+}