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Matchers.toContainKey method | bun:test module | Bun

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method

test.Matchers.toContainKeytoContainKey(expected: IfNeverThenElsekeyof T, PropertyKey>): void;Asserts that an object contains a key.

The value must be an object

@param expectedthe expected value

expect({ a: 'foo', b: 'bar', c: 'baz' }).toContainKey('a'); expect({ a: 'foo', b: 'bar', c: 'baz' }).toContainKey('b'); expect({ a: 'foo', b: 'bar', c: 'baz' }).toContainKey('c'); expect({ a: 'foo', b: 'bar', c: 'baz' }).not.toContainKey('d'); toContainKeyX = T>(expected: IfNeverThenElseNoInferkeyof X>, PropertyKey>): void;

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