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@swyxio
swyxio / createCtx-noNullCheck.tsx
Last active May 4, 2023 02:15
better createContext APIs with setters, and no default values, in Typescript. this is documented in https://github.com/typescript-cheatsheets/react-typescript-cheatsheet/blob/master/README.md#context
// create context with no upfront defaultValue
// without having to do undefined check all the time
function createCtx<A>() {
const ctx = React.createContext<A | undefined>(undefined)
function useCtx() {
const c = React.useContext(ctx)
if (!c) throw new Error("useCtx must be inside a Provider with a value")
return c
}
return [useCtx, ctx.Provider] as const
@jfmengels
jfmengels / lodash-fp-documentation.md
Last active February 6, 2024 20:57
Generated docs for Lodash/fp. Help make them better at https://github.com/jfmengels/lodash-fp-docs
var isoCountries = {
'AF' : 'Afghanistan',
'AX' : 'Aland Islands',
'AL' : 'Albania',
'DZ' : 'Algeria',
'AS' : 'American Samoa',
'AD' : 'Andorra',
'AO' : 'Angola',
'AI' : 'Anguilla',
'AQ' : 'Antarctica',