mirror of
https://github.com/pezkuwichain/pezkuwi-api.git
synced 2026-10-22 19:56:16 +00:00
Satoshi Qazi Muhammed
a9d1026736
The pezkuwi-dev build treats any package with a src/ directory as its own: it requires our license header on every file and builds it. These are upstream files that must stay byte-identical to the source embedded in dist/, so they live in upstream-src/ instead, which neither the build nor the root tsconfig picks up.
45 lines
1021 B
TypeScript
45 lines
1021 B
TypeScript
import { LookupEntry } from "./lookups"
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type FnWithStack<Other extends Array<any>, T> = (
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input: LookupEntry,
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cache: Map<number, T>,
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stack: Set<number>,
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...rest: Other
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) => T
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export const withCache =
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<Other extends Array<any>, T>(
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fn: FnWithStack<Other, T>,
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onEnterCircular: (
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cacheGetter: () => T,
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circular: LookupEntry,
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...rest: Other
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) => T,
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onExitCircular: (
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outter: T,
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inner: T,
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circular: LookupEntry,
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...rest: Other
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) => T,
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): FnWithStack<Other, T> =>
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(input, cache, stack, ...rest) => {
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const { id } = input
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if (cache.has(id)) return cache.get(id)!
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if (stack.has(id)) {
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const res = onEnterCircular(() => cache.get(id)!, input, ...rest)
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cache.set(id, res)
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return res
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}
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stack.add(id)
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let result = fn(input, cache, stack, ...rest)
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stack.delete(id)
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if (cache.has(id))
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result = onExitCircular(result, cache.get(id)!, input, ...rest)
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cache.set(id, result)
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return result
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}
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