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import React from "react";
import { Link } from "react-router-dom";
export function createResource(getPromise) {
let cache = {};
let inflight = {};
let errors = {};
function load(key) {
inflight[key] = getPromise(key)
const bypass = [
// function names to avoid logging
];
const collapsed = [
// function names to groupCollapsed
];
module.exports = function(babel) {
const { types: t } = babel;
const wrapFunctionBody = babel.template(`{
@snakeUni
snakeUni / WhyReact.md
Created September 5, 2019 09:48 — forked from sebmarkbage/WhyReact.md
Why is React doing this?

I heard some points of criticism to how React deals with reactivity and it's focus on "purity". It's interesting because there are really two approaches evolving. There's a mutable + change tracking approach and there's an immutability + referential equality testing approach. It's difficult to mix and match them when you build new features on top. So that's why React has been pushing a bit harder on immutability lately to be able to build on top of it. Both have various tradeoffs but others are doing good research in other areas, so we've decided to focus on this direction and see where it leads us.

I did want to address a few points that I didn't see get enough consideration around the tradeoffs. So here's a small brain dump.

"Compiled output results in smaller apps" - E.g. Svelte apps start smaller but the compiler output is 3-4x larger per component than the equivalent VDOM approach. This is mostly due to the code that is usually shared in the VDOM "VM" needs to be inlined into each component. The tr

@snakeUni
snakeUni / example.jsx
Created July 29, 2019 11:34 — forked from bvaughn/LICENSE.md
Advanced example for manually managing subscriptions in an async-safe way using hooks
import React, { useMemo } from "react";
import useSubscription from "./useSubscription";
// In this example, "source" is an event dispatcher (e.g. an HTMLInputElement)
// but it could be anything that emits an event and has a readable current value.
function Example({ source }) {
// In order to avoid removing and re-adding subscriptions each time this hook is called,
// the parameters passed to this hook should be memoized.
const subscription = useMemo(
() => ({