Function operatorMessage

packages/jest-jasmine2/src/assertionErrorMessage.ts:48–55

(operator: string | null)

};

const operatorMessage = (operator: string | null) => {
  const niceOperatorName = getOperatorName(operator, '');
  const humanReadableOperator = humanReadableOperators[niceOperatorName];

  return typeof operator === 'string'
    ? `${humanReadableOperator || niceOperatorName} to:\n`
    : '';
};

const assertThrowingMatcherHint = (operatorName: string) =>
  operatorName