File emit-railway-envs-json.test.ts

showcase/scripts/emit-railway-envs-json.test.ts:None–None

import { execFileSync, spawnSync } from "node:child_process";
import { mkdtempSync, readFileSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import { dirname, join, resolve } from "node:path";