@saber2pr/react/lib/core/react/memo.js

react in Typescript.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var shallowEqual_1 = require("../shared/shallowEqual");
var ReactFiberHooks_1 = require("../react-reconciler/ReactFiberHooks");
// omit key `children` in props compared.
var pickProps = function (props) {
    return Object.fromEntries(Object.entries(props).filter(function (_a) {
        var k = _a[0];
        return k !== "children";
    }));
};
function memo(component, compare) {
    var Component = function (props) {
        var newProps = pickProps(props);
        var prevProps = ReactFiberHooks_1.useRef(null);
        var result = ReactFiberHooks_1.useRef(null);
        if (compare) {
            if (compare(prevProps.current, newProps)) {
                return result.current;
            }
        }
        else {
            if (shallowEqual_1.shallowEqual(prevProps.current, newProps)) {
                return result.current;
            }
        }
        prevProps.current = newProps;
        result.current = component(props);
        return result.current;
    };
    return Component;
}
exports.memo = memo;