refactor(cli): extract shared node media helpers

src/cli/nodes-media-utils.ts

@@ -0,0 +1,30 @@
+import { randomUUID } from "node:crypto";
+import * as os from "node:os";
+
+export function asRecord(value: unknown): Record<string, unknown> {
+  return typeof value === "object" && value !== null ? (value as Record<string, unknown>) : {};
+}
+
+export function asString(value: unknown): string | undefined {
+  return typeof value === "string" ? value : undefined;
+}
+
+export function asNumber(value: unknown): number | undefined {
+  return typeof value === "number" && Number.isFinite(value) ? value : undefined;
+}
+
+export function asBoolean(value: unknown): boolean | undefined {
+  return typeof value === "boolean" ? value : undefined;
+}
+
+export function resolveTempPathParts(opts: { ext: string; tmpDir?: string; id?: string }): {
+  ext: string;
+  tmpDir: string;
+  id: string;
+} {
+  return {
+    tmpDir: opts.tmpDir ?? os.tmpdir(),
+    id: opts.id ?? randomUUID(),
+    ext: opts.ext.startsWith(".") ? opts.ext : `.${opts.ext}`,
+  };
+}