Deep JavaScript Object search with filtered keys and array support

getDeepValues.js

/**
 example:
 const searchDown = getDeepValues(
    ['testId', 'caption', 'model', 'modelId'], 
    action.payload.memoizedProps, 
    ['memoizedProps', 'props' ,'child', 'children']
);
const searchUp = getDeepValues(
    ['testId', 'caption', 'model'], 
    action.payload.return, 
    ['memoizedProps', 'props']
);
*/

const getDeepValues = function(keysToMatch:Array<String>, objectToSearch: {}, propsToSearch:Array<string>): {} {
    let keys = [...keysToMatch];
    let result = {};

    if (objectToSearch === null || (typeof objectToSearch !== 'object' && !isArray(objectToSearch))) {
        return {};
    }

    keys.forEach( (o,i) => {
        if (objectToSearch[o] !== undefined && !!objectToSearch[o]) {
            result[o] = objectToSearch[o]; // Add to our result
            keys.splice(i, 1);   // Remove the item
        }
    });

    // We're not done looking if we still have items to fill
    if (keys.length) {
        propsToSearch.forEach( (o,i) => {
            if (typeof objectToSearch[o] === 'object' && objectToSearch[o] !== null) {
                if (isArray(objectToSearch[o])) {
                    objectToSearch[o].forEach( j => {
                        let deepArraySearchResult = getDeepValues(keys, j, propsToSearch);
                        result = { ...deepArraySearchResult, ...result };
                    });
                } else {
                    let deepSearchResult = getDeepValues(keys, objectToSearch[o], propsToSearch);
                    if (deepSearchResult) {
                        result = { ...deepSearchResult, ...result };
                    }
                }
                
            }
        });
    }

    return result;
}