namespace types
Functions #
Returns true if the value is a built-in ArrayBuffer or
SharedArrayBuffer instance.
Returns true if the value is a built-in ArrayBuffer instance.
This does not include SharedArrayBuffer instances. Usually, it is
desirable to test for both; See util.types.isAnyArrayBuffer() for that.
Returns true if the value is an instance of one of the ArrayBuffer views, such as typed
array objects or DataView. Equivalent to
ArrayBuffer.isView().
Returns true if the value is an async function.
This only reports back what the JavaScript engine is seeing;
in particular, the return value may not match the original source code if
a transpilation tool was used.
Returns true if the value is a BigInt object, e.g. created
by Object(BigInt(123)).
Returns true if the value is any boxed primitive object, e.g. created
by new Boolean(), new String() or Object(Symbol()).
Returns true if the value is a generator function.
This only reports back what the JavaScript engine is seeing;
in particular, the return value may not match the original source code if
a transpilation tool was used.
Returns true if the value is a generator object as returned from a
built-in generator function.
This only reports back what the JavaScript engine is seeing;
in particular, the return value may not match the original source code if
a transpilation tool was used.
Returns true if the value was returned by the constructor of a built-in Error type.
Returns true if the value is a symbol object, created
by calling Object() on a Symbol primitive.