See https://github.com/heycam/webidl/pull/936. - `BigInt64Array` and `BigUint64Array` are introduced as keywords. - The `ArrayBufferView` and `BufferSource` aliases now include BigInt64Array and BigUint64Array as part of the union.
See whatwg/webidl#936.
BigInt64ArrayandBigUint64Arrayare introduced as keywords.ArrayBufferViewandBufferSourcealiases now include BigInt64Array and BigUint64Array as part of the union.