Checks if the given argument is an async
function.
Object.prototype.toString()
and Function.prototype.call()
and check if the result is '[object AsyncFunction]'
.const isAsyncFunction = val =>
Object.prototype.toString.call(val) === '[object AsyncFunction]';
isAsyncFunction(function() {}); // false
isAsyncFunction(async function() {}); // true
JavaScript, Type
Checks if the given argument is a generator function.
JavaScript, Type
Checks if the given argument is a function.
JavaScript, Type
Checks if the given argument is a string. Only works for string primitives.