@ttk/component/dz/virtualTable/memoize-one/index.js

ttk组件库

import areInputsEqual from './are-inputs-equal';

export default function memoizeOne(resultFn, isEqual) {
    if (isEqual === void 0) { isEqual = areInputsEqual; }
    var lastThis;
    var lastArgs = [];
    var lastResult;
    var calledOnce = false;

    function memoized() {
        var newArgs = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            newArgs[_i] = arguments[_i];
        }
        if (calledOnce && lastThis === this && isEqual(newArgs, lastArgs)) {
            return lastResult;
        }
        lastResult = resultFn.apply(this, newArgs);
        calledOnce = true;
        lastThis = this;
        lastArgs = newArgs;
        return lastResult;
    }
    return memoized;
}