Function set

apps/background/awesome.js:32–43

(items, values)

        };

        let set = (items, values) => {
            return new Promise((resolve, reject) => {
                if (typeof items === 'string') {
                    let tmp = {};
                    tmp[items] = values;
                    items = tmp;
                }
                chrome.storage.local.set(items, () => {
                    resolve();
                });
            });
        };

        let remove = keyArr => {
            return new Promise((resolve, reject) => {