version 2.10.0 rc.4

[gcanti]

Related: #1420

[SRachamim]

Why did we deprecate the empty instances? They were very useful when you want to create a stable reference for an empty array/record/map etc.

import * as A from 'fp-ts/ReadonlyArray'
import * as React from 'react'

import PureComponent from 'components/PureComponent'

interface Props<A> {
  readonly as?: ReadonlyArray<A>
}

const Component = <A>({ as = A.empty }: Props<A>) => (
  <PureComponent as={as} />
)

export default React.memo(Component)

Using [] as recommended is naive and won't work here.

What's the story with removing it? What is the trigger?

[gcanti]

@SRachamim ReadonlyArray's empty is not deprecated

[SRachamim]

Oh wow! That makes sense now!

Great change! :)