Function compareExceptionKey

lib/assert.js:439–467

(actual, expected, key, message, keys, fn)

}

function compareExceptionKey(actual, expected, key, message, keys, fn) {
  if (!(key in actual) || !isDeepStrictEqual(actual[key], expected[key])) {
    if (!message) {
      // Create placeholder objects to create a nice output.
      const a = new Comparison(actual, keys);
      const b = new Comparison(expected, keys, actual);

      const err = new AssertionError({
        actual: a,
        expected: b,
        operator: 'deepStrictEqual',
        stackStartFn: fn,
        diff: this?.[kOptions]?.diff,
      });
      err.actual = actual;
      err.expected = expected;
      err.operator = fn.name;
      throw err;
    }
    innerFail({
      actual,
      expected,
      message: [message],
      operator: fn.name,
      stackStartFn: fn,
      diff: this?.[kOptions]?.diff,
    });
  }
}

function expectedException(actual, expected, message, fn) {
  let generatedMessage = false;