UNPKG

rc-table

Version:
38 lines (36 loc) 1.29 kB
/* istanbul ignore file */ import * as React from 'react'; function useRenderTimes(props, debug) { // Render times var timesRef = React.useRef(0); timesRef.current += 1; // Props changed var propsRef = React.useRef(props); var keys = []; Object.keys(props || {}).map(function (key) { var _propsRef$current; if ((props === null || props === void 0 ? void 0 : props[key]) !== ((_propsRef$current = propsRef.current) === null || _propsRef$current === void 0 ? void 0 : _propsRef$current[key])) { keys.push(key); } }); propsRef.current = props; // Cache keys since React rerender may cause it lost var keysRef = React.useRef([]); if (keys.length) { keysRef.current = keys; } React.useDebugValue(timesRef.current); React.useDebugValue(keysRef.current.join(', ')); if (debug) { console.log("".concat(debug, ":"), timesRef.current, keysRef.current); } return timesRef.current; } export default process.env.NODE_ENV !== 'production' ? useRenderTimes : function () {}; export var RenderBlock = /*#__PURE__*/React.memo(function () { var times = useRenderTimes(); return /*#__PURE__*/React.createElement("h1", null, "Render Times: ", times); }); if (process.env.NODE_ENV !== 'production') { RenderBlock.displayName = 'RenderBlock'; }