Useful Javascript Utility Functions

utils.js

module.exports = {
    generateId: function() {
       // Generate a semi-unique id
       return '_' + Math.random().toString(36).substr(2, 9);
    },
    byteToString: function(blob) {
        // Turn an arraybuffer into a base64 string
        return btoa(new Uint8Array(blob).reduce(function (data, byte) {
            return data + String.fromCharCode(byte);
        }, ''))
    },
    walk: function(dir, fileList = []) {
        // Get all files within subdirectories
        const files = await fs.readdirSync(dir)
        for (const file of files) {
            const stat = await fs.statSync(path.join(dir, file))
            if (stat.isDirectory()) fileList = await walk(path.join(dir, file), fileList)
            else fileList.push(path.join(dir, file))
        }
        return fileList
    },
    getURLParams: function(url) {
        url = window ? window.location : new URL(url);
        const urlParamsArray = url.search.replace('?', '').split('&').map(p => p.split('='));
        let params = {};
        urlParamsArray.forEach(p => {params[p[0]] = p[1]})
        return params;
    },
    filterArrOfObjs: function(obj) {
        return obj.filter((v, i, self) => i === self.findIndex(t => (t.name === v.name && t.group === v.group)))
    }
}