function isBigUint64ArrayisBigUint64Array(value: unknown): value is BigUint64ArrayDeprecatedReturns true if the value is a BigUint64Array instance. util.types.isBigUint64Array(new BigInt64Array()); // Returns false util.types.isBigUint64Array(new BigUint64Array()); // Returns true Parametersvalue: unknownReturn Typevalue is BigUint64Array