Function exclusiveWrite

packages/core/src/util/effect-flock.ts:128–136

(filePath: string, content: string, lockDir: string, detail: string)

      /** Write with exclusive create — compromised error if file already exists. */
      const exclusiveWrite = (filePath: string, content: string, lockDir: string, detail: string) =>
        fs.writeFileString(filePath, content, { flag: "wx" }).pipe(
          Effect.catch(() =>
            Effect.gen(function* () {
              yield* forceRemove(lockDir)
              return yield* new LockCompromisedError({ detail })
            }),
          ),
        )

      const cleanStaleBreaker = Effect.fnUntraced(function* (breakerPath: string) {
        const bs = yield* safeStat(breakerPath)