71 lines
2.5 KiB
JavaScript
71 lines
2.5 KiB
JavaScript
"use client";
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import { transform } from 'motion-dom';
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import { useConstant } from '../utils/use-constant.mjs';
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import { useCombineMotionValues } from './use-combine-values.mjs';
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import { useComputed } from './use-computed.mjs';
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function useTransform(input, inputRangeOrTransformer, outputRangeOrMap, options) {
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if (typeof input === "function") {
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return useComputed(input);
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}
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/**
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* Detect if outputRangeOrMap is an output map (object with keys)
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* rather than an output range (array).
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*/
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const isOutputMap = outputRangeOrMap !== undefined &&
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!Array.isArray(outputRangeOrMap) &&
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typeof inputRangeOrTransformer !== "function";
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if (isOutputMap) {
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return useMapTransform(input, inputRangeOrTransformer, outputRangeOrMap, options);
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}
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const outputRange = outputRangeOrMap;
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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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const result = Array.isArray(input)
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? useListTransform(input, transformer)
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: useListTransform([input], ([latest]) => transformer(latest));
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const inputAccelerate = !Array.isArray(input)
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? input.accelerate
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: undefined;
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if (inputAccelerate &&
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!inputAccelerate.isTransformed &&
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typeof inputRangeOrTransformer !== "function" &&
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Array.isArray(outputRangeOrMap) &&
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options?.clamp !== false) {
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result.accelerate = {
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...inputAccelerate,
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times: inputRangeOrTransformer,
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keyframes: outputRangeOrMap,
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isTransformed: true,
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...(options?.ease ? { ease: options.ease } : {}),
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};
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}
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return result;
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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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function useMapTransform(inputValue, inputRange, outputMap, options) {
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/**
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* Capture keys once to ensure hooks are called in consistent order.
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*/
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const keys = useConstant(() => Object.keys(outputMap));
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const output = useConstant(() => ({}));
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for (const key of keys) {
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output[key] = useTransform(inputValue, inputRange, outputMap[key], options);
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}
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return output;
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}
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export { useTransform };
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//# sourceMappingURL=use-transform.mjs.map
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