@shopify/polaris/esnext/utilities/merge.js

Shopify’s product component library

export function merge(...objs) {
    const final = {};
    for (const obj of objs) {
        mergeRecursively(final, obj);
    }
    return final;
}
function mergeRecursively(objA, objB) {
    for (const key in objB) {
        if (!Object.prototype.hasOwnProperty.call(objB, key)) {
            continue;
        }
        else if (isMergeableValue(objB[key]) && isMergeableValue(objA[key])) {
            objA[key] = mergeRecursively(objA[key], objB[key]);
        }
        else {
            objA[key] = objB[key];
        }
    }
    return objA;
}
function isMergeableValue(value) {
    return value !== null && typeof value === 'object';
}