30 lines
1.1 KiB
JavaScript
30 lines
1.1 KiB
JavaScript
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import { transform } from '../utils/transform.mjs';
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import { useCombineMotionValues } from './use-combine-values.mjs';
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import { useConstant } from '../utils/use-constant.mjs';
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import { useComputed } from './use-computed.mjs';
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function useTransform(input, inputRangeOrTransformer, outputRange, options) {
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if (typeof input === "function") {
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return useComputed(input);
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}
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const transformer = typeof inputRangeOrTransformer === "function"
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? inputRangeOrTransformer
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: transform(inputRangeOrTransformer, outputRange, options);
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return Array.isArray(input)
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? useListTransform(input, transformer)
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: useListTransform([input], ([latest]) => transformer(latest));
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}
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function useListTransform(values, transformer) {
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const latest = useConstant(() => []);
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return useCombineMotionValues(values, () => {
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latest.length = 0;
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const numValues = values.length;
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for (let i = 0; i < numValues; i++) {
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latest[i] = values[i].get();
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}
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return transformer(latest);
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});
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}
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export { useTransform };
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