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