69 lines
2.4 KiB
JavaScript
69 lines
2.4 KiB
JavaScript
import _regeneratorRuntime from "@babel/runtime/helpers/esm/regeneratorRuntime";
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import _asyncToGenerator from "@babel/runtime/helpers/esm/asyncToGenerator";
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import { useCallback, useEffect, useRef } from 'react';
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import { useRefFunction } from "../useRefFunction";
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/**
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* 一个去抖的 hook，传入一个 function，返回一个去抖后的 function
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* @param {(...args:T) => Promise<any>} fn
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* @param {number} wait?
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*/
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export function useDebounceFn(fn, wait) {
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var callback = useRefFunction(fn);
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var timer = useRef();
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var cancel = useCallback(function () {
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if (timer.current) {
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clearTimeout(timer.current);
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timer.current = null;
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}
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}, []);
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var run = useCallback( /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee2() {
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var _len,
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args,
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_key,
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_args2 = arguments;
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return _regeneratorRuntime().wrap(function _callee2$(_context2) {
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while (1) switch (_context2.prev = _context2.next) {
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case 0:
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for (_len = _args2.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
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args[_key] = _args2[_key];
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}
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if (!(wait === 0 || wait === undefined)) {
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_context2.next = 3;
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break;
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}
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return _context2.abrupt("return", callback.apply(void 0, args));
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case 3:
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cancel();
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return _context2.abrupt("return", new Promise(function (resolve) {
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timer.current = setTimeout( /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee() {
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return _regeneratorRuntime().wrap(function _callee$(_context) {
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while (1) switch (_context.prev = _context.next) {
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case 0:
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_context.t0 = resolve;
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_context.next = 3;
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return callback.apply(void 0, args);
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case 3:
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_context.t1 = _context.sent;
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(0, _context.t0)(_context.t1);
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return _context.abrupt("return");
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case 6:
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case "end":
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return _context.stop();
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}
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}, _callee);
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})), wait);
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}));
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case 5:
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case "end":
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return _context2.stop();
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}
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}, _callee2);
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})), [callback, cancel, wait]);
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useEffect(function () {
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return cancel;
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}, [cancel]);
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return {
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run: run,
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cancel: cancel
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};
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} |