Method readFile

lib/internal/test_runner/snapshot.js:90–116

()

  }

  readFile() {
    if (this.loaded) {
      debug('skipping read of snapshot file');
      return;
    }

    try {
      const source = readFileSync(this.snapshotFile, 'utf8');
      const context = { __proto__: null, exports: { __proto__: null } };

      createContext(context);
      runInContext(source, context);

      if (context.exports === null || typeof context.exports !== 'object') {
        throw new ERR_INVALID_STATE(
          `Malformed snapshot file '${this.snapshotFile}'.`,
        );
      }

      for (const key in context.exports) {
        this.snapshots[key] = templateEscape(context.exports[key]);
      }
      this.loaded = true;
    } catch (err) {
      throwReadError(err, this.snapshotFile);
    }
  }

  writeFile() {
    try {