04.-Functions-and-Methods

For the return value of functions and methods it doesn't matter if they are regular, anonymous, named, static or of any other flavor. Only generators and asynchronous functions have their own return type. You can use isCallable() to cover async functions and generators as well.

Input value	`getType()` returns	`is<Type>()` function(s)
`() => {}`	`Function`	`isFunction()`, `isCallable()`
`function () {}`	`Function`	`isFunction()`, `isCallable()`
`function bar() {}`	`Function`	`isFunction()`, `isCallable()`
`function* generator() {}`	`GeneratorFunction`	`isGeneratorFunction()`, `isCallable()`
`async function() {}`	`AsyncFunction`	`isAsyncFunction()`, `isCallable()`

class Foo {
    anyMethod(){...}
    static otherMethod(){...}
}

const fooObj = new Foo();

Input value	`getType()` returns	`is<Type>()` function(s)
`fooObj.anyMethod`	`Function`	`isFunction()`, `isCallable()`
`Foo.otherMethod`	`Function`	`isFunction()`, `isCallable()`

04. Functions and Methods