How can I convert an async iterator to an array?

Here is a simple function to convert async iterator to an array without having to include a whole package.

async function toArray(asyncIterator){ 
    const arr=[]; 
    for await(const i of asyncIterator) arr.push(i); 
    return arr;
}

Your solution is the only one I know of. Here it is as a TypeScript function:

async function gen2array<T>(gen: AsyncIterable<T>): Promise<T[]> {
    const out: T[] = []
    for await(const x of gen) {
        out.push(x)
    }
    return out
}

TypeScript Playground