32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
"use strict";
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exports.__esModule = true;
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exports.default = void 0;
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var _react = require("react");
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var _useCommittedRef = _interopRequireDefault(require("./useCommittedRef"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function useRafInterval(fn, ms, paused = false) {
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let handle;
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let start = new Date().getTime();
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const fnRef = (0, _useCommittedRef.default)(fn);
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// this ref is necessary b/c useEffect will sometimes miss a paused toggle
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// orphaning a setTimeout chain in the aether, so relying on it's refresh logic is not reliable.
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const pausedRef = (0, _useCommittedRef.default)(paused);
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function loop() {
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const current = new Date().getTime();
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const delta = current - start;
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if (pausedRef.current) return;
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if (delta >= ms && fnRef.current) {
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fnRef.current();
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start = new Date().getTime();
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}
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cancelAnimationFrame(handle);
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handle = requestAnimationFrame(loop);
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}
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(0, _react.useEffect)(() => {
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handle = requestAnimationFrame(loop);
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return () => cancelAnimationFrame(handle);
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}, []);
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}
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var _default = useRafInterval;
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exports.default = _default; |