@playcanvas/react/dist/utils/shallow-equals.js

A React renderer for PlayCanvas – build interactive 3D applications using React's declarative paradigm.

function hasEqualsMethod(obj) {
    return typeof obj === 'object' &&
        obj !== null &&
        'equals' in obj &&
        typeof obj.equals === 'function';
}
export const shallowEquals = (objA, objB) => {
    // If the two objects are the same object, return true
    if (objA === objB) {
        return true;
    }
    // If either is not an object (null or primitives), return false
    if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
        return false;
    }
    // Get the keys of both objects
    const keysA = Object.keys(objA);
    const keysB = Object.keys(objB);
    // If the number of keys is different, the objects are not equal
    if (keysA.length !== keysB.length) {
        return false;
    }
    // Check if all keys and their values are equal
    for (let i = 0; i < keysA.length; i++) {
        const key = keysA[i];
        const propA = objA[key];
        const propB = objB[key];
        // If the object has an equality operator, use this
        if (hasEqualsMethod(propA)) {
            return propA.equals(propB);
        }
        else if (propA !== propB) {
            return false;
        }
    }
    return true;
};
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