33 lines
769 B
TypeScript
33 lines
769 B
TypeScript
import {pointerToPrism} from '../pointerToPrism'
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import type {Pointer} from '../pointer'
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import {isPointer} from '../pointer'
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import Ticker from '../Ticker'
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import type {Prism} from './Interface'
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import {isPrism} from './Interface'
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export default function* iterateOver<V>(
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pointerOrPrism: Prism<V> | Pointer<V>,
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): Generator<V, void, void> {
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let d
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if (isPointer(pointerOrPrism)) {
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d = pointerToPrism(pointerOrPrism) as Prism<V>
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} else if (isPrism(pointerOrPrism)) {
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d = pointerOrPrism
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} else {
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throw new Error(`Only pointers and prisms are supported`)
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}
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const ticker = new Ticker()
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const untap = d.onChange(ticker, (v) => {})
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try {
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while (true) {
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ticker.tick()
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yield d.getValue()
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}
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} finally {
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untap()
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}
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}
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