Busca por campos em Array e Object em Javascript

search.js

export const search = (list, keyword, options) => {
    if (options === undefined) options = {};

    if (typeof list === "object") {
        const results = {};
        Object.keys(list).map(item_index => {
            const item = list[item_index];
            if (typeof item === "object") {
                var keys = Object.keys(item);

                if ("fields" in options)
                    keys = options["fields"];

                let found = false;

                keys.map(key => {
                    if (item[key] !== null) {
                        var field = item[key].toString();

                        if ("caseSensitive" in options) {
                            if (field.search(keyword) !== -1) found = true;
                        } else {
                            if (field.toLowerCase().search(keyword.toString().toLowerCase()) !== -1) found = true;
                        }
                    }
                });

                if (found) results[item_index] = item;
            } else {
                if (item.toString().search(keyword) !== -1) results[item_index] = item;
            }
        });

        return results;
    } else {
        const results = [];
        list.map(item => {
            if (typeof item === "object") {
                var keys = Object.keys(item);

                if ("fields" in options)
                    keys = options["fields"];

                let found = false;

                keys.map(key => {
                    if (item[key] !== null) {
                        var field = item[key].toString();

                        if ("caseSensitive" in options) {
                            if (field.search(keyword) !== -1) found = true;
                        } else {
                            if (field.toLowerCase().search(keyword.toString().toLowerCase()) !== -1) found = true;
                        }
                    }
                });

                if (found) results.push(item);
            } else {
                if (item.toString().search(keyword) !== -1) results.push(item);
            }
        });

        return results;
    }
};