result

result.ts

const result = <T,E extends Error>(cb: () => T): [null, E] | [T, null] => {
    try {
        return [cb(), null]
    } catch(e){
       return [null,e as E]
    }
}
const failsSometimes = () => {
    if(Math.random() > .5){
        throw new Error("Failed")
    }
    return "success"
}
const [success, failed] = result(failsSometimes)

console.log({
    success,
    failed
})