ciorent/fiber.js

A lightweight, low-overhead concurrency library

import{nextTick,sleep}from"./index.js";export let running=e=>e[1]===1;export let completed=e=>e[1]===2;export let interrupted=e=>e[1]===3;let invoke=async(f,p)=>{await nextTick;try{let e=f.next();while(!e.done){let m=await e.value;if(p[1]===3)return;e=f.next(m)}p[1]=2;return e.value}finally{if(p[1]!==2)p[1]=3;p[2].forEach(interrupt)}};export let fn=e=>e;export let spawn=(e,...f)=>{let p=[null,1,[]];p[0]=invoke(e(p,...f),p);return p};export let interrupt=e=>{if(e[1]!==2)e[1]=3};export let timeout=async(e,p)=>{await sleep(p);interrupt(e)};export function*join(e){return yield e[0]}export let done=e=>e[0];export let mount=(e,f)=>{f[2].push(e)};export let control=(e,f)=>{f.addEventListener(`abort`,()=>{interrupt(e)})};export function*unwrap(e){return yield e}