source snapshot 2026-09-02

mobile/scripts/repro-worktree-startup-output.ts

@@ -0,0 +1,75 @@
+import { mkdirSync, writeFileSync } from 'node:fs'
+import { join } from 'node:path'
+
+const ESC = String.fromCharCode(27)
+
+export type StartupTerminalCapture = {
+  handle: string
+  title: string | null
+  scrollback: Record<string, unknown> | null
+  chunks: string[]
+}
+
+function stripAnsi(value: string): string {
+  return (
+    value
+      // eslint-disable-next-line no-control-regex -- intentional terminal escape stripping for repro summaries
+      .replace(/\u001b\][^\u0007]*(?:\u0007|\u001b\\)/g, '')
+      // eslint-disable-next-line no-control-regex -- intentional terminal escape stripping for repro summaries
+      .replace(/\u001b\[[0-?]*[ -/]*[@-~]/g, '')
+      .replace(/\r/g, '\n')
+  )
+}
+
+function normalizePreview(value: string): string {
+  return stripAnsi(value)
+    .split('\n')
+    .map((line) => line.trim())
+    .filter(Boolean)
+    .slice(0, 8)
+    .join('\n')
+}
+
+export function summarizeStartupCapture(capture: StartupTerminalCapture): Record<string, unknown> {
+  const serialized =
+    typeof capture.scrollback?.serialized === 'string' ? capture.scrollback.serialized : ''
+  const live = capture.chunks.join('')
+  const serializedPreview = normalizePreview(serialized)
+  const livePreview = normalizePreview(live)
+  return {
+    handle: capture.handle,
+    title: capture.title,
+    cols: capture.scrollback?.cols ?? null,
+    rows: capture.scrollback?.rows ?? null,
+    serializedBytes: Buffer.byteLength(serialized),
+    liveBytes: Buffer.byteLength(live),
+    liveChunks: capture.chunks.length,
+    serializedSgr: (serialized.match(new RegExp(`${ESC}\\[[0-9;:]*m`, 'g')) ?? []).length,
+    liveSgr: (live.match(new RegExp(`${ESC}\\[[0-9;:]*m`, 'g')) ?? []).length,
+    livePreviewContainedInSerialized:
+      livePreview.length > 0 && stripAnsi(serialized).includes(livePreview.split('\n')[0] ?? ''),
+    serializedPreview,
+    livePreview
+  }
+}
+
+export function saveStartupCaptures(
+  captures: StartupTerminalCapture[],
+  worktreeName: string
+): string {
+  const dir = join(process.cwd(), 'terminal-startup-repro', worktreeName)
+  mkdirSync(dir, { recursive: true })
+  for (const capture of captures) {
+    const base = capture.handle.replace(/[^a-z0-9_-]/gi, '-')
+    const serialized =
+      typeof capture.scrollback?.serialized === 'string' ? capture.scrollback.serialized : ''
+    writeFileSync(join(dir, `${base}.serialized.ansi`), serialized)
+    writeFileSync(join(dir, `${base}.live.ansi`), capture.chunks.join(''))
+    writeFileSync(join(dir, `${base}.json`), JSON.stringify(capture, null, 2))
+  }
+  writeFileSync(
+    join(dir, 'summary.json'),
+    JSON.stringify(captures.map(summarizeStartupCapture), null, 2)
+  )
+  return dir
+}