Function toHaveKey

toHaveKey(
    this: MatcherState,
    received: unknown,
    expectedKey: unknown,
): SyncExpectationResult
Matcher that checks if a Map contains the given key, regardless of its value.
Parameters
- this: MatcherState
- received: unknown
  The received value. Should be a Map
- expectedKey: unknown
  The key whose inclusion in the map is being checked
Returns SyncExpectationResult
Whether the matcher passed
- Defined in test/test-utils/matchers/to-have-key.ts:11