how to take an iterable object as a function parameter? (Typescript)

Question

example:

function foo(iterable) {
    for (let i of iterable) {}
}

What type could iterable be here asides from any? other examples include Array.from and most of the other iterable data structure constructors.

Answer 1

Iterable is an ES6 feature, so setting your tsc target to "es6" lets you take in an Iterable as a parameter, e.g.

function foo<T>(iterable: Iterable<T>) {
    for (let i of iterable) {}
}