caper-preact/dist/shallow-equal.js

A library for building declarative, stateful user interfaces.

export function shallowEqual(objA, objB) {
    if (objA === objB) {
        return true;
    }
    if (!objA || !objB || typeof objA !== 'object' || typeof objB !== 'object') {
        return false;
    }
    const keysA = Object.keys(objA);
    const keysB = Object.keys(objB);
    if (keysA.length !== keysB.length) {
        return false;
    }
    for (let i = 0; i < keysA.length; i++) {
        const key = keysA[i];
        if (!Object.prototype.hasOwnProperty.call(objB, key) || objA[key] !== objB[key]) {
            return false;
        }
    }
    return true;
}
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