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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | 1x 1x 1x 1x 1x 1x 1x 100x 1x 1x 1x 1x 1x | import {Foldable} from '@effect/typeclass/data/Option'
import {pipe} from 'effect'
import {constant, dual} from 'effect/Function'
import * as OP from 'effect/Option'
import * as RF from '../RightFoldable.js'
import type {ReduceRight} from '../RightFoldable.js'
const reduceRight: ReduceRight<OP.OptionTypeLambda> = dual(
3,
<A, B>(self: OP.Option<A>, zero: B, f: (accumulator: B, value: A) => B): B =>
pipe(self, OP.match({onNone: constant(zero), onSome: a => f(zero, a)})),
)
/**
* @category instances
*/
export const RightFoldable: RF.RightFoldable<OP.OptionTypeLambda> = {
...Foldable,
reduceRight,
}
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