expect(null).toBeDefined() // pass
Number of word 600
泣いた
refs: https://github.com/jestjs/jest/blob/v26.0.1/packages/expect/src/matchers.ts#L196-L212
toBeDefined(this: MatcherState, received: unknown, expected: void) {
const matcherName = 'toBeDefined';
const options: MatcherHintOptions = {
isNot: this.isNot,
promise: this.promise,
};
ensureNoExpected(expected, matcherName, options);
const pass = received !== void 0;
const message = () =>
matcherHint(matcherName, undefined, '', options) +
'\n\n' +
`Received: ${printReceived(received)}`;
return {message, pass};
},