Function getTestFileFromStack

expect/_snapshot_state.ts:52–83

()

 * frame that isn't part of the expect module internals.
 */
export function getTestFileFromStack(): string | null {
  // deno-lint-ignore no-explicit-any
  const ErrorCtor = Error as any;
  const origPrepareStackTrace = ErrorCtor.prepareStackTrace;
  try {
    const obj: { stack: string | null } = { stack: null };
    ErrorCtor.prepareStackTrace = (
      _err: Error,
      // deno-lint-ignore no-explicit-any
      stack: any[],
    ): string | null => {
      for (const frame of stack) {
        if (frame.isEval()) continue;
        const fileName: string | null = frame.getFileName();
        if (fileName === null) continue;
        // Skip expect module internal files
        if (
          fileName.includes("/expect/_") ||
          fileName.includes("/expect/expect.ts")
        ) {
          continue;
        }
        return fileName;
      }
      return null;
    };
    ErrorCtor.captureStackTrace(obj);
    return obj.stack;
  } finally {
    ErrorCtor.prepareStackTrace = origPrepareStackTrace;
  }
}

// --- Serialization ---