mini migrate to v2 (#35526)

packages/cli/src/mini/trace.ts

@@ -0,0 +1,94 @@
+// Dev-only JSONL event trace for direct interactive mode.
+//
+// Enable with OPENCODE_DIRECT_TRACE=1. Writes one JSON line per event to
+// ~/.local/share/opencode/log/direct/<timestamp>-<pid>.jsonl. Also writes
+// a latest.json pointer so you can quickly find the most recent trace.
+//
+// The trace captures the full closed loop: outbound prompts, inbound SDK
+// events, reducer output, footer commits, and turn lifecycle markers.
+// Useful for debugging stream ordering, permission behavior, and
+// footer/transcript mismatches.
+//
+// Lazy-initialized: the first call to trace() decides whether tracing is
+// active based on the env var, and subsequent calls return the cached result.
+import fs from "fs"
+import path from "path"
+import { Global } from "@opencode-ai/core/global"
+
+export type Trace = {
+  write(type: string, data?: unknown): void
+}
+
+let state: Trace | false | undefined
+
+function stamp() {
+  return new Date()
+    .toISOString()
+    .replace(/[-:]/g, "")
+    .replace(/\.\d+Z$/, "Z")
+}
+
+function file() {
+  return path.join(Global.Path.log, "direct", `${stamp()}-${process.pid}.jsonl`)
+}
+
+function latest() {
+  return path.join(Global.Path.log, "direct", "latest.json")
+}
+
+function text(data: unknown) {
+  return JSON.stringify(
+    data,
+    (_key, value) => {
+      if (typeof value === "bigint") {
+        return String(value)
+      }
+
+      return value
+    },
+    0,
+  )
+}
+
+export function trace(): Trace | undefined {
+  if (state !== undefined) {
+    return state || undefined
+  }
+
+  if (!process.env.OPENCODE_DIRECT_TRACE) {
+    state = false
+    return undefined
+  }
+
+  const target = file()
+  fs.mkdirSync(path.dirname(target), { recursive: true })
+  fs.writeFileSync(
+    latest(),
+    text({
+      time: new Date().toISOString(),
+      pid: process.pid,
+      cwd: process.cwd(),
+      argv: process.argv.slice(2),
+      path: target,
+    }) + "\n",
+  )
+  state = {
+    write(type: string, data?: unknown) {
+      fs.appendFileSync(
+        target,
+        text({
+          time: new Date().toISOString(),
+          pid: process.pid,
+          type,
+          data,
+        }) + "\n",
+      )
+    },
+  }
+  state.write("trace.start", {
+    argv: process.argv.slice(2),
+    cwd: process.cwd(),
+    path: target,
+  })
+  return state
+}