1602 lines
62 KiB
JavaScript
1602 lines
62 KiB
JavaScript
const fs = typeof require !== "undefined" && require('fs');
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const crypto = typeof require !== "undefined" && require('crypto');
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const all = (arr, fn = Boolean) => arr.every(fn);
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const allEqual = arr => arr.every(val => val === arr[0]);
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const any = (arr, fn = Boolean) => arr.some(fn);
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const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;
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const arrayToCSV = (arr, delimiter = ',') =>
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arr
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.map(v => v.map(x => (isNaN(x) ? `"${x.replace(/"/g, '""')}"` : x)).join(delimiter))
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.join('\n');
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const arrayToHtmlList = (arr, listID) =>
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(el => (
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(el = document.querySelector('#' + listID)),
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(el.innerHTML += arr.map(item => `<li>${item}</li>`).join(''))
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))();
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const ary = (fn, n) => (...args) => fn(...args.slice(0, n));
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const atob = str => Buffer.from(str, 'base64').toString('binary');
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const attempt = (fn, ...args) => {
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try {
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return fn(...args);
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} catch (e) {
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return e instanceof Error ? e : new Error(e);
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}
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};
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const average = (...nums) => nums.reduce((acc, val) => acc + val, 0) / nums.length;
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const averageBy = (arr, fn) =>
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arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val) => acc + val, 0) /
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arr.length;
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const bifurcate = (arr, filter) =>
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arr.reduce((acc, val, i) => (acc[filter[i] ? 0 : 1].push(val), acc), [[], []]);
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const bifurcateBy = (arr, fn) =>
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arr.reduce((acc, val, i) => (acc[fn(val, i) ? 0 : 1].push(val), acc), [[], []]);
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const bind = (fn, context, ...boundArgs) => (...args) => fn.apply(context, [...boundArgs, ...args]);
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const bindAll = (obj, ...fns) =>
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fns.forEach(
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fn => (
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(f = obj[fn]),
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(obj[fn] = function() {
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return f.apply(obj);
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})
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)
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);
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const bindKey = (context, fn, ...boundArgs) => (...args) =>
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context[fn].apply(context, [...boundArgs, ...args]);
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const binomialCoefficient = (n, k) => {
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if (Number.isNaN(n) || Number.isNaN(k)) return NaN;
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if (k < 0 || k > n) return 0;
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if (k === 0 || k === n) return 1;
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if (k === 1 || k === n - 1) return n;
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if (n - k < k) k = n - k;
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let res = n;
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for (let j = 2; j <= k; j++) res *= (n - j + 1) / j;
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return Math.round(res);
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};
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const bottomVisible = () =>
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document.documentElement.clientHeight + window.scrollY >=
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(document.documentElement.scrollHeight || document.documentElement.clientHeight);
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const btoa = str => Buffer.from(str, 'binary').toString('base64');
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const byteSize = str => new Blob([str]).size;
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const call = (key, ...args) => context => context[key](...args);
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const capitalize = ([first, ...rest], lowerRest = false) =>
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first.toUpperCase() + (lowerRest ? rest.join('').toLowerCase() : rest.join(''));
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const capitalizeEveryWord = str => str.replace(/\b[a-z]/g, char => char.toUpperCase());
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const castArray = val => (Array.isArray(val) ? val : [val]);
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const chainAsync = fns => {
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let curr = 0;
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const last = fns[fns.length - 1];
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const next = () => {
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const fn = fns[curr++];
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fn === last ? fn() : fn(next);
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};
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next();
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};
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const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
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const chunk = (arr, size) =>
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Array.from({ length: Math.ceil(arr.length / size) }, (v, i) =>
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arr.slice(i * size, i * size + size)
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);
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const clampNumber = (num, a, b) => Math.max(Math.min(num, Math.max(a, b)), Math.min(a, b));
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const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
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const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
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const coalesceFactory = valid => (...args) => args.find(valid);
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const collectInto = fn => (...args) => fn(args);
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const colorize = (...args) => ({
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black: `\x1b[30m${args.join(' ')}`,
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red: `\x1b[31m${args.join(' ')}`,
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green: `\x1b[32m${args.join(' ')}`,
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yellow: `\x1b[33m${args.join(' ')}`,
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blue: `\x1b[34m${args.join(' ')}`,
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magenta: `\x1b[35m${args.join(' ')}`,
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cyan: `\x1b[36m${args.join(' ')}`,
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white: `\x1b[37m${args.join(' ')}`,
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bgBlack: `\x1b[40m${args.join(' ')}\x1b[0m`,
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bgRed: `\x1b[41m${args.join(' ')}\x1b[0m`,
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bgGreen: `\x1b[42m${args.join(' ')}\x1b[0m`,
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bgYellow: `\x1b[43m${args.join(' ')}\x1b[0m`,
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bgBlue: `\x1b[44m${args.join(' ')}\x1b[0m`,
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bgMagenta: `\x1b[45m${args.join(' ')}\x1b[0m`,
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bgCyan: `\x1b[46m${args.join(' ')}\x1b[0m`,
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bgWhite: `\x1b[47m${args.join(' ')}\x1b[0m`
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});
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const compact = arr => arr.filter(Boolean);
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const compactWhitespace = str => str.replace(/\s{2,}/g, ' ');
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const compose = (...fns) => fns.reduce((f, g) => (...args) => f(g(...args)));
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const composeRight = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
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const converge = (converger, fns) => (...args) => converger(...fns.map(fn => fn.apply(null, args)));
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const copyToClipboard = str => {
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const el = document.createElement('textarea');
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el.value = str;
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el.setAttribute('readonly', '');
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el.style.position = 'absolute';
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el.style.left = '-9999px';
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document.body.appendChild(el);
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const selected =
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document.getSelection().rangeCount > 0 ? document.getSelection().getRangeAt(0) : false;
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el.select();
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document.execCommand('copy');
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document.body.removeChild(el);
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if (selected) {
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document.getSelection().removeAllRanges();
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document.getSelection().addRange(selected);
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}
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};
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const countBy = (arr, fn) =>
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arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val) => {
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acc[val] = (acc[val] || 0) + 1;
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return acc;
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}, {});
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const counter = (selector, start, end, step = 1, duration = 2000) => {
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let current = start,
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_step = (end - start) * step < 0 ? -step : step,
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timer = setInterval(() => {
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current += _step;
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document.querySelector(selector).innerHTML = current;
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if (current >= end) document.querySelector(selector).innerHTML = end;
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if (current >= end) clearInterval(timer);
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}, Math.abs(Math.floor(duration / (end - start))));
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return timer;
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};
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const countOccurrences = (arr, val) => arr.reduce((a, v) => (v === val ? a + 1 : a), 0);
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const createDirIfNotExists = dir => (!fs.existsSync(dir) ? fs.mkdirSync(dir) : undefined);
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const createElement = str => {
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const el = document.createElement('div');
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el.innerHTML = str;
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return el.firstElementChild;
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};
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const createEventHub = () => ({
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hub: Object.create(null),
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emit(event, data) {
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(this.hub[event] || []).forEach(handler => handler(data));
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},
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on(event, handler) {
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if (!this.hub[event]) this.hub[event] = [];
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this.hub[event].push(handler);
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},
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off(event, handler) {
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const i = (this.hub[event] || []).findIndex(h => h === handler);
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if (i > -1) this.hub[event].splice(i, 1);
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if (this.hub[event].length === 0) delete this.hub[event];
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}
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});
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const CSVToArray = (data, delimiter = ',', omitFirstRow = false) =>
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data
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.slice(omitFirstRow ? data.indexOf('\n') + 1 : 0)
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.split('\n')
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.map(v => v.split(delimiter));
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const CSVToJSON = (data, delimiter = ',') => {
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const titles = data.slice(0, data.indexOf('\n')).split(delimiter);
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return data
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.slice(data.indexOf('\n') + 1)
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.split('\n')
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.map(v => {
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const values = v.split(delimiter);
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return titles.reduce((obj, title, index) => ((obj[title] = values[index]), obj), {});
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});
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};
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const currentURL = () => window.location.href;
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const curry = (fn, arity = fn.length, ...args) =>
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arity <= args.length ? fn(...args) : curry.bind(null, fn, arity, ...args);
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const dayOfYear = date =>
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Math.floor((date - new Date(date.getFullYear(), 0, 0)) / 1000 / 60 / 60 / 24);
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const debounce = (fn, ms = 0) => {
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let timeoutId;
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return function(...args) {
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clearTimeout(timeoutId);
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timeoutId = setTimeout(() => fn.apply(this, args), ms);
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};
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};
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const decapitalize = ([first, ...rest], upperRest = false) =>
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first.toLowerCase() + (upperRest ? rest.join('').toUpperCase() : rest.join(''));
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const deepClone = obj => {
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if (obj === null) return null;
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let clone = Object.assign({}, obj);
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Object.keys(clone).forEach(
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key => (clone[key] = typeof obj[key] === 'object' ? deepClone(obj[key]) : obj[key])
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);
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return Array.isArray(obj) && obj.length
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? (clone.length = obj.length) && Array.from(clone)
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: Array.isArray(obj)
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? Array.from(obj)
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: clone;
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};
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const deepFlatten = arr => [].concat(...arr.map(v => (Array.isArray(v) ? deepFlatten(v) : v)));
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const deepFreeze = obj =>
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Object.keys(obj).forEach(prop =>
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!(obj[prop] instanceof Object) || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
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) || Object.freeze(obj);
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const deepGet = (obj, keys) => keys.reduce((xs, x) => (xs && xs[x] ? xs[x] : null), obj);
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const deepMapKeys = (obj, f) =>
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Array.isArray(obj)
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? obj.map(val => deepMapKeys(val, f))
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: typeof obj === 'object'
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? Object.keys(obj).reduce((acc, current) => {
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const val = obj[current];
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acc[f(current)] =
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val !== null && typeof val === 'object' ? deepMapKeys(val, f) : (acc[f(current)] = val);
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return acc;
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}, {})
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: obj;
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const defaults = (obj, ...defs) => Object.assign({}, obj, ...defs.reverse(), obj);
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const defer = (fn, ...args) => setTimeout(fn, 1, ...args);
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const degreesToRads = deg => (deg * Math.PI) / 180.0;
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const delay = (fn, wait, ...args) => setTimeout(fn, wait, ...args);
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const detectDeviceType = () =>
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/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)
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? 'Mobile'
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: 'Desktop';
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const difference = (a, b) => {
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const s = new Set(b);
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return a.filter(x => !s.has(x));
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};
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const differenceBy = (a, b, fn) => {
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const s = new Set(b.map(fn));
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return a.map(fn).filter(el => !s.has(el));
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};
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const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => comp(a, b)) === -1);
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const dig = (obj, target) =>
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target in obj
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? obj[target]
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: Object.values(obj).reduce((acc, val) => {
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if (acc !== undefined) return acc;
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if (typeof val === 'object') return dig(val, target);
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}, undefined);
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const digitize = n => [...`${n}`].map(i => parseInt(i));
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const distance = (x0, y0, x1, y1) => Math.hypot(x1 - x0, y1 - y0);
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const drop = (arr, n = 1) => arr.slice(n);
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const dropRight = (arr, n = 1) => arr.slice(0, -n);
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const dropRightWhile = (arr, func) => {
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let rightIndex = arr.length;
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while (rightIndex-- && !func(arr[rightIndex]));
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return arr.slice(0, rightIndex + 1);
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};
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const dropWhile = (arr, func) => {
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while (arr.length > 0 && !func(arr[0])) arr = arr.slice(1);
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return arr;
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};
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const elementContains = (parent, child) => parent !== child && parent.contains(child);
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const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
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const { top, left, bottom, right } = el.getBoundingClientRect();
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const { innerHeight, innerWidth } = window;
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return partiallyVisible
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? ((top > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
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((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
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: top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
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};
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const elo = ([...ratings], kFactor = 32, selfRating) => {
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const [a, b] = ratings;
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const expectedScore = (self, opponent) => 1 / (1 + 10 ** ((opponent - self) / 400));
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const newRating = (rating, i) =>
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(selfRating || rating) + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
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if (ratings.length === 2) return [newRating(a, 1), newRating(b, 0)];
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for (let i = 0, len = ratings.length; i < len; i++) {
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let j = i;
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while (j < len - 1) {
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j++;
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[ratings[i], ratings[j]] = elo([ratings[i], ratings[j]], kFactor);
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}
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}
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return ratings;
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};
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const equals = (a, b) => {
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if (a === b) return true;
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if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime();
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if (!a || !b || (typeof a !== 'object' && typeof b !== 'object')) return a === b;
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if (a.prototype !== b.prototype) return false;
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let keys = Object.keys(a);
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if (keys.length !== Object.keys(b).length) return false;
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return keys.every(k => equals(a[k], b[k]));
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};
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const escapeHTML = str =>
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str.replace(
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/[&<>'"]/g,
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tag =>
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({
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'&': '&',
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'<': '<',
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'>': '>',
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"'": ''',
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'"': '"'
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}[tag] || tag)
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);
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const escapeRegExp = str => str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
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const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);
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const extendHex = shortHex =>
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'#' +
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shortHex
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.slice(shortHex.startsWith('#') ? 1 : 0)
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.split('')
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.map(x => x + x)
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.join('');
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const factorial = n =>
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n < 0
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? (() => {
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throw new TypeError('Negative numbers are not allowed!');
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})()
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: n <= 1
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? 1
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: n * factorial(n - 1);
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const fibonacci = n =>
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Array.from({ length: n }).reduce(
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(acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
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[]
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);
|
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const filterFalsy = arr => arr.filter(Boolean);
|
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const filterNonUnique = arr => arr.filter(i => arr.indexOf(i) === arr.lastIndexOf(i));
|
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const filterNonUniqueBy = (arr, fn) =>
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arr.filter((v, i) => arr.every((x, j) => (i === j) === fn(v, x, i, j)));
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const findKey = (obj, fn) => Object.keys(obj).find(key => fn(obj[key], key, obj));
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const findLast = (arr, fn) => arr.filter(fn).pop();
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const findLastIndex = (arr, fn) =>
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(arr
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.map((val, i) => [i, val])
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.filter(([i, val]) => fn(val, i, arr))
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|
.pop() || [-1])[0];
|
|
const findLastKey = (obj, fn) =>
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Object.keys(obj)
|
|
.reverse()
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|
.find(key => fn(obj[key], key, obj));
|
|
const flatten = (arr, depth = 1) =>
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arr.reduce((a, v) => a.concat(depth > 1 && Array.isArray(v) ? flatten(v, depth - 1) : v), []);
|
|
const flattenObject = (obj, prefix = '') =>
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Object.keys(obj).reduce((acc, k) => {
|
|
const pre = prefix.length ? prefix + '.' : '';
|
|
if (typeof obj[k] === 'object') Object.assign(acc, flattenObject(obj[k], pre + k));
|
|
else acc[pre + k] = obj[k];
|
|
return acc;
|
|
}, {});
|
|
const flip = fn => (first, ...rest) => fn(...rest, first);
|
|
const forEachRight = (arr, callback) =>
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|
arr
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|
.slice(0)
|
|
.reverse()
|
|
.forEach(callback);
|
|
const formatDuration = ms => {
|
|
if (ms < 0) ms = -ms;
|
|
const time = {
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|
day: Math.floor(ms / 86400000),
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hour: Math.floor(ms / 3600000) % 24,
|
|
minute: Math.floor(ms / 60000) % 60,
|
|
second: Math.floor(ms / 1000) % 60,
|
|
millisecond: Math.floor(ms) % 1000
|
|
};
|
|
return Object.entries(time)
|
|
.filter(val => val[1] !== 0)
|
|
.map(([key, val]) => `${val} ${key}${val !== 1 ? 's' : ''}`)
|
|
.join(', ');
|
|
};
|
|
const formToObject = form =>
|
|
Array.from(new FormData(form)).reduce(
|
|
(acc, [key, value]) => ({
|
|
...acc,
|
|
[key]: value
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|
}),
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{}
|
|
);
|
|
const forOwn = (obj, fn) => Object.keys(obj).forEach(key => fn(obj[key], key, obj));
|
|
const forOwnRight = (obj, fn) =>
|
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Object.keys(obj)
|
|
.reverse()
|
|
.forEach(key => fn(obj[key], key, obj));
|
|
const frequencies = arr =>
|
|
arr.reduce((a, v) => {
|
|
a[v] = a[v] ? a[v] + 1 : 1;
|
|
return a;
|
|
}, {});
|
|
const fromCamelCase = (str, separator = '_') =>
|
|
str
|
|
.replace(/([a-z\d])([A-Z])/g, '$1' + separator + '$2')
|
|
.replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + separator + '$2')
|
|
.toLowerCase();
|
|
const functionName = fn => (console.debug(fn.name), fn);
|
|
const functions = (obj, inherited = false) =>
|
|
(inherited
|
|
? [...Object.keys(obj), ...Object.keys(Object.getPrototypeOf(obj))]
|
|
: Object.keys(obj)
|
|
).filter(key => typeof obj[key] === 'function');
|
|
const gcd = (...arr) => {
|
|
const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
|
|
return [...arr].reduce((a, b) => _gcd(a, b));
|
|
};
|
|
const geometricProgression = (end, start = 1, step = 2) =>
|
|
Array.from({ length: Math.floor(Math.log(end / start) / Math.log(step)) + 1 }).map(
|
|
(v, i) => start * step ** i
|
|
);
|
|
const get = (from, ...selectors) =>
|
|
[...selectors].map(s =>
|
|
s
|
|
.replace(/\[([^\[\]]*)\]/g, '.$1.')
|
|
.split('.')
|
|
.filter(t => t !== '')
|
|
.reduce((prev, cur) => prev && prev[cur], from)
|
|
);
|
|
const getColonTimeFromDate = date => date.toTimeString().slice(0, 8);
|
|
const getDaysDiffBetweenDates = (dateInitial, dateFinal) =>
|
|
(dateFinal - dateInitial) / (1000 * 3600 * 24);
|
|
const getImages = (el, includeDuplicates = false) => {
|
|
const images = [...el.getElementsByTagName('img')].map(img => img.getAttribute('src'));
|
|
return includeDuplicates ? images : [...new Set(images)];
|
|
};
|
|
const getMeridiemSuffixOfInteger = num =>
|
|
num === 0 || num === 24
|
|
? 12 + 'am'
|
|
: num === 12
|
|
? 12 + 'pm'
|
|
: num < 12
|
|
? (num % 12) + 'am'
|
|
: (num % 12) + 'pm';
|
|
const getScrollPosition = (el = window) => ({
|
|
x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,
|
|
y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop
|
|
});
|
|
const getStyle = (el, ruleName) => getComputedStyle(el)[ruleName];
|
|
const getType = v =>
|
|
v === undefined ? 'undefined' : v === null ? 'null' : v.constructor.name.toLowerCase();
|
|
const getURLParameters = url =>
|
|
(url.match(/([^?=&]+)(=([^&]*))/g) || []).reduce(
|
|
(a, v) => ((a[v.slice(0, v.indexOf('='))] = v.slice(v.indexOf('=') + 1)), a),
|
|
{}
|
|
);
|
|
const groupBy = (arr, fn) =>
|
|
arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val, i) => {
|
|
acc[val] = (acc[val] || []).concat(arr[i]);
|
|
return acc;
|
|
}, {});
|
|
const hammingDistance = (num1, num2) => ((num1 ^ num2).toString(2).match(/1/g) || '').length;
|
|
const hasClass = (el, className) => el.classList.contains(className);
|
|
const hasFlags = (...flags) =>
|
|
flags.every(flag => process.argv.includes(/^-{1,2}/.test(flag) ? flag : '--' + flag));
|
|
const hashBrowser = val =>
|
|
crypto.subtle.digest('SHA-256', new TextEncoder('utf-8').encode(val)).then(h => {
|
|
let hexes = [],
|
|
view = new DataView(h);
|
|
for (let i = 0; i < view.byteLength; i += 4)
|
|
hexes.push(('00000000' + view.getUint32(i).toString(16)).slice(-8));
|
|
return hexes.join('');
|
|
});
|
|
|
|
const hashNode = val =>
|
|
new Promise(resolve =>
|
|
setTimeout(
|
|
() =>
|
|
resolve(
|
|
crypto
|
|
.createHash('sha256')
|
|
.update(val)
|
|
.digest('hex')
|
|
),
|
|
0
|
|
)
|
|
);
|
|
const hasKey = (obj, keys) => {
|
|
return (
|
|
keys.length > 0 &&
|
|
keys.every(key => {
|
|
if (typeof obj !== 'object' || !obj.hasOwnProperty(key)) return false;
|
|
obj = obj[key];
|
|
return true;
|
|
})
|
|
);
|
|
};
|
|
const haveSameContents = (a, b) => {
|
|
for (const v of new Set([...a, ...b]))
|
|
if (a.filter(e => e === v).length !== b.filter(e => e === v).length) return false;
|
|
return true;
|
|
};
|
|
const head = arr => (arr && arr.length ? arr[0] : undefined);
|
|
const hexToRGB = hex => {
|
|
let alpha = false,
|
|
h = hex.slice(hex.startsWith('#') ? 1 : 0);
|
|
if (h.length === 3) h = [...h].map(x => x + x).join('');
|
|
else if (h.length === 8) alpha = true;
|
|
h = parseInt(h, 16);
|
|
return (
|
|
'rgb' +
|
|
(alpha ? 'a' : '') +
|
|
'(' +
|
|
(h >>> (alpha ? 24 : 16)) +
|
|
', ' +
|
|
((h & (alpha ? 0x00ff0000 : 0x00ff00)) >>> (alpha ? 16 : 8)) +
|
|
', ' +
|
|
((h & (alpha ? 0x0000ff00 : 0x0000ff)) >>> (alpha ? 8 : 0)) +
|
|
(alpha ? `, ${h & 0x000000ff}` : '') +
|
|
')'
|
|
);
|
|
};
|
|
const hide = (...el) => [...el].forEach(e => (e.style.display = 'none'));
|
|
const httpGet = (url, callback, err = console.error) => {
|
|
const request = new XMLHttpRequest();
|
|
request.open('GET', url, true);
|
|
request.onload = () => callback(request.responseText);
|
|
request.onerror = () => err(request);
|
|
request.send();
|
|
};
|
|
const httpPost = (url, data, callback, err = console.error) => {
|
|
const request = new XMLHttpRequest();
|
|
request.open('POST', url, true);
|
|
request.setRequestHeader('Content-type', 'application/json; charset=utf-8');
|
|
request.onload = () => callback(request.responseText);
|
|
request.onerror = () => err(request);
|
|
request.send(data);
|
|
};
|
|
const httpsRedirect = () => {
|
|
if (location.protocol !== 'https:') location.replace('https://' + location.href.split('//')[1]);
|
|
};
|
|
const hz = (fn, iterations = 100) => {
|
|
const before = performance.now();
|
|
for (let i = 0; i < iterations; i++) fn();
|
|
return (1000 * iterations) / (performance.now() - before);
|
|
};
|
|
const includesAll = (arr, values) => values.every(v => arr.includes(v));
|
|
const includesAny = (arr, values) => values.some(v => arr.includes(v));
|
|
const indentString = (str, count, indent = ' ') => str.replace(/^/gm, indent.repeat(count));
|
|
const indexOfAll = (arr, val) => arr.reduce((acc, el, i) => (el === val ? [...acc, i] : acc), []);
|
|
const initial = arr => arr.slice(0, -1);
|
|
const initialize2DArray = (w, h, val = null) =>
|
|
Array.from({ length: h }).map(() => Array.from({ length: w }).fill(val));
|
|
const initializeArrayWithRange = (end, start = 0, step = 1) =>
|
|
Array.from({ length: Math.ceil((end - start + 1) / step) }, (v, i) => i * step + start);
|
|
const initializeArrayWithRangeRight = (end, start = 0, step = 1) =>
|
|
Array.from({ length: Math.ceil((end + 1 - start) / step) }).map(
|
|
(v, i, arr) => (arr.length - i - 1) * step + start
|
|
);
|
|
const initializeArrayWithValues = (n, val = 0) => Array(n).fill(val);
|
|
const initializeNDArray = (val, ...args) =>
|
|
args.length === 0
|
|
? val
|
|
: Array.from({ length: args[0] }).map(() => initializeNDArray(val, ...args.slice(1)));
|
|
const inRange = (n, start, end = null) => {
|
|
if (end && start > end) [end, start] = [start, end];
|
|
return end == null ? n >= 0 && n < start : n >= start && n < end;
|
|
};
|
|
const insertAfter = (el, htmlString) => el.insertAdjacentHTML('afterend', htmlString);
|
|
const insertBefore = (el, htmlString) => el.insertAdjacentHTML('beforebegin', htmlString);
|
|
const intersection = (a, b) => {
|
|
const s = new Set(b);
|
|
return a.filter(x => s.has(x));
|
|
};
|
|
const intersectionBy = (a, b, fn) => {
|
|
const s = new Set(b.map(fn));
|
|
return a.filter(x => s.has(fn(x)));
|
|
};
|
|
const intersectionWith = (a, b, comp) => a.filter(x => b.findIndex(y => comp(x, y)) !== -1);
|
|
const invertKeyValues = (obj, fn) =>
|
|
Object.keys(obj).reduce((acc, key) => {
|
|
const val = fn ? fn(obj[key]) : obj[key];
|
|
acc[val] = acc[val] || [];
|
|
acc[val].push(key);
|
|
return acc;
|
|
}, {});
|
|
const is = (type, val) => ![, null].includes(val) && val.constructor === type;
|
|
const isAbsoluteURL = str => /^[a-z][a-z0-9+.-]*:/.test(str);
|
|
const isAfterDate = (dateA, dateB) => dateA > dateB;
|
|
const isAnagram = (str1, str2) => {
|
|
const normalize = str =>
|
|
str
|
|
.toLowerCase()
|
|
.replace(/[^a-z0-9]/gi, '')
|
|
.split('')
|
|
.sort()
|
|
.join('');
|
|
return normalize(str1) === normalize(str2);
|
|
};
|
|
const isArrayLike = obj => obj != null && typeof obj[Symbol.iterator] === 'function';
|
|
const isBeforeDate = (dateA, dateB) => dateA < dateB;
|
|
const isBoolean = val => typeof val === 'boolean';
|
|
const isBrowser = () => ![typeof window, typeof document].includes('undefined');
|
|
const isBrowserTabFocused = () => !document.hidden;
|
|
const isContainedIn = (a, b) => {
|
|
for (const v of new Set(a)) {
|
|
if (!b.some(e => e === v) || a.filter(e => e === v).length > b.filter(e => e === v).length)
|
|
return false;
|
|
}
|
|
return true;
|
|
};
|
|
const isDivisible = (dividend, divisor) => dividend % divisor === 0;
|
|
const isDuplexStream = val =>
|
|
val !== null &&
|
|
typeof val === 'object' &&
|
|
typeof val.pipe === 'function' &&
|
|
typeof val._read === 'function' &&
|
|
typeof val._readableState === 'object' &&
|
|
typeof val._write === 'function' &&
|
|
typeof val._writableState === 'object';
|
|
const isEmpty = val => val == null || !(Object.keys(val) || val).length;
|
|
const isEven = num => num % 2 === 0;
|
|
const isFunction = val => typeof val === 'function';
|
|
const isLowerCase = str => str === str.toLowerCase();
|
|
const isNegativeZero = val => val === 0 && 1 / val === -Infinity;
|
|
const isNil = val => val === undefined || val === null;
|
|
const isNull = val => val === null;
|
|
const isNumber = val => typeof val === 'number' && val === val;
|
|
const isObject = obj => obj === Object(obj);
|
|
const isObjectLike = val => val !== null && typeof val === 'object';
|
|
const isOdd = num => num % 2 === 1;
|
|
const isPlainObject = val => !!val && typeof val === 'object' && val.constructor === Object;
|
|
const isPowerOfTwo = n => !!n && (n & (n - 1)) == 0;
|
|
const isPrime = num => {
|
|
const boundary = Math.floor(Math.sqrt(num));
|
|
for (var i = 2; i <= boundary; i++) if (num % i === 0) return false;
|
|
return num >= 2;
|
|
};
|
|
const isPrimitive = val => Object(val) !== val;
|
|
const isPromiseLike = obj =>
|
|
obj !== null &&
|
|
(typeof obj === 'object' || typeof obj === 'function') &&
|
|
typeof obj.then === 'function';
|
|
const isReadableStream = val =>
|
|
val !== null &&
|
|
typeof val === 'object' &&
|
|
typeof val.pipe === 'function' &&
|
|
typeof val._read === 'function' &&
|
|
typeof val._readableState === 'object';
|
|
const isSameDate = (dateA, dateB) => dateA.toISOString() === dateB.toISOString();
|
|
const isSorted = arr => {
|
|
let direction = -(arr[0] - arr[1]);
|
|
for (let [i, val] of arr.entries()) {
|
|
direction = !direction ? -(arr[i - 1] - arr[i]) : direction;
|
|
if (i === arr.length - 1) return !direction ? 0 : direction;
|
|
else if ((val - arr[i + 1]) * direction > 0) return 0;
|
|
}
|
|
};
|
|
const isStream = val => val !== null && typeof val === 'object' && typeof val.pipe === 'function';
|
|
const isString = val => typeof val === 'string';
|
|
const isSymbol = val => typeof val === 'symbol';
|
|
const isTravisCI = () => 'TRAVIS' in process.env && 'CI' in process.env;
|
|
const isUndefined = val => val === undefined;
|
|
const isUpperCase = str => str === str.toUpperCase();
|
|
const isValidJSON = str => {
|
|
try {
|
|
JSON.parse(str);
|
|
return true;
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
};
|
|
const isWeekday = (t = new Date()) => {
|
|
return t.getDay() % 6 !== 0;
|
|
};
|
|
const isWeekend = (t = new Date()) => {
|
|
return t.getDay() % 6 === 0;
|
|
};
|
|
const isWritableStream = val =>
|
|
val !== null &&
|
|
typeof val === 'object' &&
|
|
typeof val.pipe === 'function' &&
|
|
typeof val._write === 'function' &&
|
|
typeof val._writableState === 'object';
|
|
const join = (arr, separator = ',', end = separator) =>
|
|
arr.reduce(
|
|
(acc, val, i) =>
|
|
i === arr.length - 2
|
|
? acc + val + end
|
|
: i === arr.length - 1
|
|
? acc + val
|
|
: acc + val + separator,
|
|
''
|
|
);
|
|
const JSONtoCSV = (arr, columns, delimiter = ',') =>
|
|
[
|
|
columns.join(delimiter),
|
|
...arr.map(obj =>
|
|
columns.reduce(
|
|
(acc, key) => `${acc}${!acc.length ? '' : delimiter}"${!obj[key] ? '' : obj[key]}"`,
|
|
''
|
|
)
|
|
)
|
|
].join('\n');
|
|
|
|
const JSONToFile = (obj, filename) =>
|
|
fs.writeFile(`${filename}.json`, JSON.stringify(obj, null, 2));
|
|
const last = arr => (arr && arr.length ? arr[arr.length - 1] : undefined);
|
|
const lcm = (...arr) => {
|
|
const gcd = (x, y) => (!y ? x : gcd(y, x % y));
|
|
const _lcm = (x, y) => (x * y) / gcd(x, y);
|
|
return [...arr].reduce((a, b) => _lcm(a, b));
|
|
};
|
|
const longestItem = (...vals) => vals.reduce((a, x) => (x.length > a.length ? x : a));
|
|
const lowercaseKeys = obj =>
|
|
Object.keys(obj).reduce((acc, key) => {
|
|
acc[key.toLowerCase()] = obj[key];
|
|
return acc;
|
|
}, {});
|
|
const luhnCheck = num => {
|
|
let arr = (num + '')
|
|
.split('')
|
|
.reverse()
|
|
.map(x => parseInt(x));
|
|
let lastDigit = arr.splice(0, 1)[0];
|
|
let sum = arr.reduce((acc, val, i) => (i % 2 !== 0 ? acc + val : acc + ((val * 2) % 9) || 9), 0);
|
|
sum += lastDigit;
|
|
return sum % 10 === 0;
|
|
};
|
|
const mapKeys = (obj, fn) =>
|
|
Object.keys(obj).reduce((acc, k) => {
|
|
acc[fn(obj[k], k, obj)] = obj[k];
|
|
return acc;
|
|
}, {});
|
|
const mapNumRange = (num, inMin, inMax, outMin, outMax) =>
|
|
((num - inMin) * (outMax - outMin)) / (inMax - inMin) + outMin;
|
|
const mapObject = (arr, fn) =>
|
|
(a => (
|
|
(a = [arr, arr.map(fn)]), a[0].reduce((acc, val, ind) => ((acc[val] = a[1][ind]), acc), {})
|
|
))();
|
|
const mapString = (str, fn) =>
|
|
str
|
|
.split('')
|
|
.map((c, i) => fn(c, i, str))
|
|
.join('');
|
|
const mapValues = (obj, fn) =>
|
|
Object.keys(obj).reduce((acc, k) => {
|
|
acc[k] = fn(obj[k], k, obj);
|
|
return acc;
|
|
}, {});
|
|
const mask = (cc, num = 4, mask = '*') => `${cc}`.slice(-num).padStart(`${cc}`.length, mask);
|
|
const matches = (obj, source) =>
|
|
Object.keys(source).every(key => obj.hasOwnProperty(key) && obj[key] === source[key]);
|
|
const matchesWith = (obj, source, fn) =>
|
|
Object.keys(source).every(key =>
|
|
obj.hasOwnProperty(key) && fn
|
|
? fn(obj[key], source[key], key, obj, source)
|
|
: obj[key] == source[key]
|
|
);
|
|
const maxBy = (arr, fn) => Math.max(...arr.map(typeof fn === 'function' ? fn : val => val[fn]));
|
|
const maxDate = dates => new Date(Math.max(...dates));
|
|
const maxN = (arr, n = 1) => [...arr].sort((a, b) => b - a).slice(0, n);
|
|
const median = arr => {
|
|
const mid = Math.floor(arr.length / 2),
|
|
nums = [...arr].sort((a, b) => a - b);
|
|
return arr.length % 2 !== 0 ? nums[mid] : (nums[mid - 1] + nums[mid]) / 2;
|
|
};
|
|
const memoize = fn => {
|
|
const cache = new Map();
|
|
const cached = function(val) {
|
|
return cache.has(val) ? cache.get(val) : cache.set(val, fn.call(this, val)) && cache.get(val);
|
|
};
|
|
cached.cache = cache;
|
|
return cached;
|
|
};
|
|
const merge = (...objs) =>
|
|
[...objs].reduce(
|
|
(acc, obj) =>
|
|
Object.keys(obj).reduce((a, k) => {
|
|
acc[k] = acc.hasOwnProperty(k) ? [].concat(acc[k]).concat(obj[k]) : obj[k];
|
|
return acc;
|
|
}, {}),
|
|
{}
|
|
);
|
|
const midpoint = ([x1, y1], [x2, y2]) => [(x1 + x2) / 2, (y1 + y2) / 2];
|
|
const minBy = (arr, fn) => Math.min(...arr.map(typeof fn === 'function' ? fn : val => val[fn]));
|
|
const minDate = dates => new Date(Math.min(...dates));
|
|
const minN = (arr, n = 1) => [...arr].sort((a, b) => a - b).slice(0, n);
|
|
const mostFrequent = arr =>
|
|
Object.entries(
|
|
arr.reduce((a, v) => {
|
|
a[v] = a[v] ? a[v] + 1 : 1;
|
|
return a;
|
|
}, {})
|
|
).reduce((a, v) => (v[1] >= a[1] ? v : a), [null, 0])[0];
|
|
const mostPerformant = (fns, iterations = 10000) => {
|
|
const times = fns.map(fn => {
|
|
const before = performance.now();
|
|
for (let i = 0; i < iterations; i++) fn();
|
|
return performance.now() - before;
|
|
});
|
|
return times.indexOf(Math.min(...times));
|
|
};
|
|
const negate = func => (...args) => !func(...args);
|
|
const nest = (items, id = null, link = 'parent_id') =>
|
|
items
|
|
.filter(item => item[link] === id)
|
|
.map(item => ({ ...item, children: nest(items, item.id) }));
|
|
const nodeListToArray = nodeList => [...nodeList];
|
|
const none = (arr, fn = Boolean) => !arr.some(fn);
|
|
const nthArg = n => (...args) => args.slice(n)[0];
|
|
const nthElement = (arr, n = 0) => (n === -1 ? arr.slice(n) : arr.slice(n, n + 1))[0];
|
|
const objectFromPairs = arr => arr.reduce((a, [key, val]) => ((a[key] = val), a), {});
|
|
const objectToPairs = obj => Object.keys(obj).map(k => [k, obj[k]]);
|
|
const objectToQueryString = queryParameters => {
|
|
return queryParameters
|
|
? Object.entries(queryParameters).reduce((queryString, [key, val], index) => {
|
|
const symbol = queryString.length === 0 ? '?' : '&';
|
|
queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';
|
|
return queryString;
|
|
}, '')
|
|
: '';
|
|
};
|
|
const observeMutations = (element, callback, options) => {
|
|
const observer = new MutationObserver(mutations => mutations.forEach(m => callback(m)));
|
|
observer.observe(
|
|
element,
|
|
Object.assign(
|
|
{
|
|
childList: true,
|
|
attributes: true,
|
|
attributeOldValue: true,
|
|
characterData: true,
|
|
characterDataOldValue: true,
|
|
subtree: true
|
|
},
|
|
options
|
|
)
|
|
);
|
|
return observer;
|
|
};
|
|
const off = (el, evt, fn, opts = false) => el.removeEventListener(evt, fn, opts);
|
|
const offset = (arr, offset) => [...arr.slice(offset), ...arr.slice(0, offset)];
|
|
const omit = (obj, arr) =>
|
|
Object.keys(obj)
|
|
.filter(k => !arr.includes(k))
|
|
.reduce((acc, key) => ((acc[key] = obj[key]), acc), {});
|
|
const omitBy = (obj, fn) =>
|
|
Object.keys(obj)
|
|
.filter(k => !fn(obj[k], k))
|
|
.reduce((acc, key) => ((acc[key] = obj[key]), acc), {});
|
|
const on = (el, evt, fn, opts = {}) => {
|
|
const delegatorFn = e => e.target.matches(opts.target) && fn.call(e.target, e);
|
|
el.addEventListener(evt, opts.target ? delegatorFn : fn, opts.options || false);
|
|
if (opts.target) return delegatorFn;
|
|
};
|
|
const once = fn => {
|
|
let called = false;
|
|
return function(...args) {
|
|
if (called) return;
|
|
called = true;
|
|
return fn.apply(this, args);
|
|
};
|
|
};
|
|
const onUserInputChange = callback => {
|
|
let type = 'mouse',
|
|
lastTime = 0;
|
|
const mousemoveHandler = () => {
|
|
const now = performance.now();
|
|
if (now - lastTime < 20)
|
|
(type = 'mouse'), callback(type), document.removeEventListener('mousemove', mousemoveHandler);
|
|
lastTime = now;
|
|
};
|
|
document.addEventListener('touchstart', () => {
|
|
if (type === 'touch') return;
|
|
(type = 'touch'), callback(type), document.addEventListener('mousemove', mousemoveHandler);
|
|
});
|
|
};
|
|
const orderBy = (arr, props, orders) =>
|
|
[...arr].sort((a, b) =>
|
|
props.reduce((acc, prop, i) => {
|
|
if (acc === 0) {
|
|
const [p1, p2] = orders && orders[i] === 'desc' ? [b[prop], a[prop]] : [a[prop], b[prop]];
|
|
acc = p1 > p2 ? 1 : p1 < p2 ? -1 : 0;
|
|
}
|
|
return acc;
|
|
}, 0)
|
|
);
|
|
const over = (...fns) => (...args) => fns.map(fn => fn.apply(null, args));
|
|
const overArgs = (fn, transforms) => (...args) => fn(...args.map((val, i) => transforms[i](val)));
|
|
const pad = (str, length, char = ' ') =>
|
|
str.padStart((str.length + length) / 2, char).padEnd(length, char);
|
|
const palindrome = str => {
|
|
const s = str.toLowerCase().replace(/[\W_]/g, '');
|
|
return s === [...s].reverse().join('');
|
|
};
|
|
const parseCookie = str =>
|
|
str
|
|
.split(';')
|
|
.map(v => v.split('='))
|
|
.reduce((acc, v) => {
|
|
acc[decodeURIComponent(v[0].trim())] = decodeURIComponent(v[1].trim());
|
|
return acc;
|
|
}, {});
|
|
const partial = (fn, ...partials) => (...args) => fn(...partials, ...args);
|
|
const partialRight = (fn, ...partials) => (...args) => fn(...args, ...partials);
|
|
const partition = (arr, fn) =>
|
|
arr.reduce(
|
|
(acc, val, i, arr) => {
|
|
acc[fn(val, i, arr) ? 0 : 1].push(val);
|
|
return acc;
|
|
},
|
|
[[], []]
|
|
);
|
|
const percentile = (arr, val) =>
|
|
(100 * arr.reduce((acc, v) => acc + (v < val ? 1 : 0) + (v === val ? 0.5 : 0), 0)) / arr.length;
|
|
const permutations = arr => {
|
|
if (arr.length <= 2) return arr.length === 2 ? [arr, [arr[1], arr[0]]] : arr;
|
|
return arr.reduce(
|
|
(acc, item, i) =>
|
|
acc.concat(
|
|
permutations([...arr.slice(0, i), ...arr.slice(i + 1)]).map(val => [item, ...val])
|
|
),
|
|
[]
|
|
);
|
|
};
|
|
const pick = (obj, arr) =>
|
|
arr.reduce((acc, curr) => (curr in obj && (acc[curr] = obj[curr]), acc), {});
|
|
const pickBy = (obj, fn) =>
|
|
Object.keys(obj)
|
|
.filter(k => fn(obj[k], k))
|
|
.reduce((acc, key) => ((acc[key] = obj[key]), acc), {});
|
|
const pipeAsyncFunctions = (...fns) => arg => fns.reduce((p, f) => p.then(f), Promise.resolve(arg));
|
|
const pipeFunctions = (...fns) => fns.reduce((f, g) => (...args) => g(f(...args)));
|
|
const pluralize = (val, word, plural = word + 's') => {
|
|
const _pluralize = (num, word, plural = word + 's') =>
|
|
[1, -1].includes(Number(num)) ? word : plural;
|
|
if (typeof val === 'object') return (num, word) => _pluralize(num, word, val[word]);
|
|
return _pluralize(val, word, plural);
|
|
};
|
|
const powerset = arr => arr.reduce((a, v) => a.concat(a.map(r => [v].concat(r))), [[]]);
|
|
const prefix = prop => {
|
|
const capitalizedProp = prop.charAt(0).toUpperCase() + prop.slice(1);
|
|
const prefixes = ['', 'webkit', 'moz', 'ms', 'o'];
|
|
const i = prefixes.findIndex(
|
|
prefix => typeof document.body.style[prefix ? prefix + capitalizedProp : prop] !== 'undefined'
|
|
);
|
|
return i !== -1 ? (i === 0 ? prop : prefixes[i] + capitalizedProp) : null;
|
|
};
|
|
const prettyBytes = (num, precision = 3, addSpace = true) => {
|
|
const UNITS = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
|
|
if (Math.abs(num) < 1) return num + (addSpace ? ' ' : '') + UNITS[0];
|
|
const exponent = Math.min(Math.floor(Math.log10(num < 0 ? -num : num) / 3), UNITS.length - 1);
|
|
const n = Number(((num < 0 ? -num : num) / 1000 ** exponent).toPrecision(precision));
|
|
return (num < 0 ? '-' : '') + n + (addSpace ? ' ' : '') + UNITS[exponent];
|
|
};
|
|
const primes = num => {
|
|
let arr = Array.from({ length: num - 1 }).map((x, i) => i + 2),
|
|
sqroot = Math.floor(Math.sqrt(num)),
|
|
numsTillSqroot = Array.from({ length: sqroot - 1 }).map((x, i) => i + 2);
|
|
numsTillSqroot.forEach(x => (arr = arr.filter(y => y % x !== 0 || y === x)));
|
|
return arr;
|
|
};
|
|
const promisify = func => (...args) =>
|
|
new Promise((resolve, reject) =>
|
|
func(...args, (err, result) => (err ? reject(err) : resolve(result)))
|
|
);
|
|
const pull = (arr, ...args) => {
|
|
let argState = Array.isArray(args[0]) ? args[0] : args;
|
|
let pulled = arr.filter(v => !argState.includes(v));
|
|
arr.length = 0;
|
|
pulled.forEach(v => arr.push(v));
|
|
};
|
|
const pullAtIndex = (arr, pullArr) => {
|
|
let removed = [];
|
|
let pulled = arr
|
|
.map((v, i) => (pullArr.includes(i) ? removed.push(v) : v))
|
|
.filter((v, i) => !pullArr.includes(i));
|
|
arr.length = 0;
|
|
pulled.forEach(v => arr.push(v));
|
|
return removed;
|
|
};
|
|
const pullAtValue = (arr, pullArr) => {
|
|
let removed = [],
|
|
pushToRemove = arr.forEach((v, i) => (pullArr.includes(v) ? removed.push(v) : v)),
|
|
mutateTo = arr.filter((v, i) => !pullArr.includes(v));
|
|
arr.length = 0;
|
|
mutateTo.forEach(v => arr.push(v));
|
|
return removed;
|
|
};
|
|
const pullBy = (arr, ...args) => {
|
|
const length = args.length;
|
|
let fn = length > 1 ? args[length - 1] : undefined;
|
|
fn = typeof fn == 'function' ? (args.pop(), fn) : undefined;
|
|
let argState = (Array.isArray(args[0]) ? args[0] : args).map(val => fn(val));
|
|
let pulled = arr.filter((v, i) => !argState.includes(fn(v)));
|
|
arr.length = 0;
|
|
pulled.forEach(v => arr.push(v));
|
|
};
|
|
const radsToDegrees = rad => (rad * 180.0) / Math.PI;
|
|
const randomHexColorCode = () => {
|
|
let n = (Math.random() * 0xfffff * 1000000).toString(16);
|
|
return '#' + n.slice(0, 6);
|
|
};
|
|
const randomIntArrayInRange = (min, max, n = 1) =>
|
|
Array.from({ length: n }, () => Math.floor(Math.random() * (max - min + 1)) + min);
|
|
const randomIntegerInRange = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min;
|
|
const randomNumberInRange = (min, max) => Math.random() * (max - min) + min;
|
|
|
|
const readFileLines = filename =>
|
|
fs
|
|
.readFileSync(filename)
|
|
.toString('UTF8')
|
|
.split('\n');
|
|
const rearg = (fn, indexes) => (...args) => fn(...indexes.map(i => args[i]));
|
|
const recordAnimationFrames = (callback, autoStart = true) => {
|
|
let running = true,
|
|
raf;
|
|
const stop = () => {
|
|
running = false;
|
|
cancelAnimationFrame(raf);
|
|
};
|
|
const start = () => {
|
|
running = true;
|
|
run();
|
|
};
|
|
const run = () => {
|
|
raf = requestAnimationFrame(() => {
|
|
callback();
|
|
if (running) run();
|
|
});
|
|
};
|
|
if (autoStart) start();
|
|
return { start, stop };
|
|
};
|
|
const redirect = (url, asLink = true) =>
|
|
asLink ? (window.location.href = url) : window.location.replace(url);
|
|
const reducedFilter = (data, keys, fn) =>
|
|
data.filter(fn).map(el =>
|
|
keys.reduce((acc, key) => {
|
|
acc[key] = el[key];
|
|
return acc;
|
|
}, {})
|
|
);
|
|
const reduceSuccessive = (arr, fn, acc) =>
|
|
arr.reduce((res, val, i, arr) => (res.push(fn(res.slice(-1)[0], val, i, arr)), res), [acc]);
|
|
const reduceWhich = (arr, comparator = (a, b) => a - b) =>
|
|
arr.reduce((a, b) => (comparator(a, b) >= 0 ? b : a));
|
|
const reject = (pred, array) => array.filter((...args) => !pred(...args));
|
|
const remove = (arr, func) =>
|
|
Array.isArray(arr)
|
|
? arr.filter(func).reduce((acc, val) => {
|
|
arr.splice(arr.indexOf(val), 1);
|
|
return acc.concat(val);
|
|
}, [])
|
|
: [];
|
|
const removeNonASCII = str => str.replace(/[^\x20-\x7E]/g, '');
|
|
const renameKeys = (keysMap, obj) =>
|
|
Object.keys(obj).reduce(
|
|
(acc, key) => ({
|
|
...acc,
|
|
...{ [keysMap[key] || key]: obj[key] }
|
|
}),
|
|
{}
|
|
);
|
|
const reverseString = str => [...str].reverse().join('');
|
|
const RGBToHex = (r, g, b) => ((r << 16) + (g << 8) + b).toString(16).padStart(6, '0');
|
|
const round = (n, decimals = 0) => Number(`${Math.round(`${n}e${decimals}`)}e-${decimals}`);
|
|
const runAsync = fn => {
|
|
const worker = new Worker(
|
|
URL.createObjectURL(new Blob([`postMessage((${fn})());`]), {
|
|
type: 'application/javascript; charset=utf-8'
|
|
})
|
|
);
|
|
return new Promise((res, rej) => {
|
|
worker.onmessage = ({ data }) => {
|
|
res(data), worker.terminate();
|
|
};
|
|
worker.onerror = err => {
|
|
rej(err), worker.terminate();
|
|
};
|
|
});
|
|
};
|
|
const runPromisesInSeries = ps => ps.reduce((p, next) => p.then(next), Promise.resolve());
|
|
const sample = arr => arr[Math.floor(Math.random() * arr.length)];
|
|
const sampleSize = ([...arr], n = 1) => {
|
|
let m = arr.length;
|
|
while (m) {
|
|
const i = Math.floor(Math.random() * m--);
|
|
[arr[m], arr[i]] = [arr[i], arr[m]];
|
|
}
|
|
return arr.slice(0, n);
|
|
};
|
|
const scrollToTop = () => {
|
|
const c = document.documentElement.scrollTop || document.body.scrollTop;
|
|
if (c > 0) {
|
|
window.requestAnimationFrame(scrollToTop);
|
|
window.scrollTo(0, c - c / 8);
|
|
}
|
|
};
|
|
const sdbm = str => {
|
|
let arr = str.split('');
|
|
return arr.reduce(
|
|
(hashCode, currentVal) =>
|
|
(hashCode = currentVal.charCodeAt(0) + (hashCode << 6) + (hashCode << 16) - hashCode),
|
|
0
|
|
);
|
|
};
|
|
const serializeCookie = (name, val) => `${encodeURIComponent(name)}=${encodeURIComponent(val)}`;
|
|
const serializeForm = form =>
|
|
Array.from(new FormData(form), field => field.map(encodeURIComponent).join('=')).join('&');
|
|
const setStyle = (el, ruleName, val) => (el.style[ruleName] = val);
|
|
const shallowClone = obj => Object.assign({}, obj);
|
|
const shank = (arr, index = 0, delCount = 0, ...elements) =>
|
|
arr
|
|
.slice(0, index)
|
|
.concat(elements)
|
|
.concat(arr.slice(index + delCount));
|
|
const show = (...el) => [...el].forEach(e => (e.style.display = ''));
|
|
const shuffle = ([...arr]) => {
|
|
let m = arr.length;
|
|
while (m) {
|
|
const i = Math.floor(Math.random() * m--);
|
|
[arr[m], arr[i]] = [arr[i], arr[m]];
|
|
}
|
|
return arr;
|
|
};
|
|
const similarity = (arr, values) => arr.filter(v => values.includes(v));
|
|
const size = val =>
|
|
Array.isArray(val)
|
|
? val.length
|
|
: val && typeof val === 'object'
|
|
? val.size || val.length || Object.keys(val).length
|
|
: typeof val === 'string'
|
|
? new Blob([val]).size
|
|
: 0;
|
|
const sleep = ms => new Promise(resolve => setTimeout(resolve, ms));
|
|
const smoothScroll = element =>
|
|
document.querySelector(element).scrollIntoView({
|
|
behavior: 'smooth'
|
|
});
|
|
const sortCharactersInString = str => [...str].sort((a, b) => a.localeCompare(b)).join('');
|
|
const sortedIndex = (arr, n) => {
|
|
const isDescending = arr[0] > arr[arr.length - 1];
|
|
const index = arr.findIndex(el => (isDescending ? n >= el : n <= el));
|
|
return index === -1 ? arr.length : index;
|
|
};
|
|
const sortedIndexBy = (arr, n, fn) => {
|
|
const isDescending = fn(arr[0]) > fn(arr[arr.length - 1]);
|
|
const val = fn(n);
|
|
const index = arr.findIndex(el => (isDescending ? val >= fn(el) : val <= fn(el)));
|
|
return index === -1 ? arr.length : index;
|
|
};
|
|
const sortedLastIndex = (arr, n) => {
|
|
const isDescending = arr[0] > arr[arr.length - 1];
|
|
const index = arr.reverse().findIndex(el => (isDescending ? n <= el : n >= el));
|
|
return index === -1 ? 0 : arr.length - index;
|
|
};
|
|
const sortedLastIndexBy = (arr, n, fn) => {
|
|
const isDescending = fn(arr[0]) > fn(arr[arr.length - 1]);
|
|
const val = fn(n);
|
|
const index = arr
|
|
.map(fn)
|
|
.reverse()
|
|
.findIndex(el => (isDescending ? val <= el : val >= el));
|
|
return index === -1 ? 0 : arr.length - index;
|
|
};
|
|
const splitLines = str => str.split(/\r?\n/);
|
|
const spreadOver = fn => argsArr => fn(...argsArr);
|
|
const stableSort = (arr, compare) =>
|
|
arr
|
|
.map((item, index) => ({ item, index }))
|
|
.sort((a, b) => compare(a.item, b.item) || a.index - b.index)
|
|
.map(({ item }) => item);
|
|
const standardDeviation = (arr, usePopulation = false) => {
|
|
const mean = arr.reduce((acc, val) => acc + val, 0) / arr.length;
|
|
return Math.sqrt(
|
|
arr.reduce((acc, val) => acc.concat((val - mean) ** 2), []).reduce((acc, val) => acc + val, 0) /
|
|
(arr.length - (usePopulation ? 0 : 1))
|
|
);
|
|
};
|
|
const stringPermutations = str => {
|
|
if (str.length <= 2) return str.length === 2 ? [str, str[1] + str[0]] : [str];
|
|
return str
|
|
.split('')
|
|
.reduce(
|
|
(acc, letter, i) =>
|
|
acc.concat(stringPermutations(str.slice(0, i) + str.slice(i + 1)).map(val => letter + val)),
|
|
[]
|
|
);
|
|
};
|
|
const stripHTMLTags = str => str.replace(/<[^>]*>/g, '');
|
|
const sum = (...arr) => [...arr].reduce((acc, val) => acc + val, 0);
|
|
const sumBy = (arr, fn) =>
|
|
arr.map(typeof fn === 'function' ? fn : val => val[fn]).reduce((acc, val) => acc + val, 0);
|
|
const sumPower = (end, power = 2, start = 1) =>
|
|
Array(end + 1 - start)
|
|
.fill(0)
|
|
.map((x, i) => (i + start) ** power)
|
|
.reduce((a, b) => a + b, 0);
|
|
const symmetricDifference = (a, b) => {
|
|
const sA = new Set(a),
|
|
sB = new Set(b);
|
|
return [...a.filter(x => !sB.has(x)), ...b.filter(x => !sA.has(x))];
|
|
};
|
|
const symmetricDifferenceBy = (a, b, fn) => {
|
|
const sA = new Set(a.map(v => fn(v))),
|
|
sB = new Set(b.map(v => fn(v)));
|
|
return [...a.filter(x => !sB.has(fn(x))), ...b.filter(x => !sA.has(fn(x)))];
|
|
};
|
|
const symmetricDifferenceWith = (arr, val, comp) => [
|
|
...arr.filter(a => val.findIndex(b => comp(a, b)) === -1),
|
|
...val.filter(a => arr.findIndex(b => comp(a, b)) === -1)
|
|
];
|
|
const tail = arr => (arr.length > 1 ? arr.slice(1) : arr);
|
|
const take = (arr, n = 1) => arr.slice(0, n);
|
|
const takeRight = (arr, n = 1) => arr.slice(arr.length - n, arr.length);
|
|
const takeRightWhile = (arr, func) =>
|
|
arr.reduceRight((acc, el) => (func(el) ? acc : [el, ...acc]), []);
|
|
const takeWhile = (arr, func) => {
|
|
for (const [i, val] of arr.entries()) if (func(val)) return arr.slice(0, i);
|
|
return arr;
|
|
};
|
|
const throttle = (fn, wait) => {
|
|
let inThrottle, lastFn, lastTime;
|
|
return function() {
|
|
const context = this,
|
|
args = arguments;
|
|
if (!inThrottle) {
|
|
fn.apply(context, args);
|
|
lastTime = Date.now();
|
|
inThrottle = true;
|
|
} else {
|
|
clearTimeout(lastFn);
|
|
lastFn = setTimeout(function() {
|
|
if (Date.now() - lastTime >= wait) {
|
|
fn.apply(context, args);
|
|
lastTime = Date.now();
|
|
}
|
|
}, Math.max(wait - (Date.now() - lastTime), 0));
|
|
}
|
|
};
|
|
};
|
|
const times = (n, fn, context = undefined) => {
|
|
let i = 0;
|
|
while (fn.call(context, i) !== false && ++i < n) {}
|
|
};
|
|
const timeTaken = callback => {
|
|
console.time('timeTaken');
|
|
const r = callback();
|
|
console.timeEnd('timeTaken');
|
|
return r;
|
|
};
|
|
const toCamelCase = str => {
|
|
let s =
|
|
str &&
|
|
str
|
|
.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
|
|
.map(x => x.slice(0, 1).toUpperCase() + x.slice(1).toLowerCase())
|
|
.join('');
|
|
return s.slice(0, 1).toLowerCase() + s.slice(1);
|
|
};
|
|
const toCurrency = (n, curr, LanguageFormat = undefined) =>
|
|
Intl.NumberFormat(LanguageFormat, { style: 'currency', currency: curr }).format(n);
|
|
const toDecimalMark = num => num.toLocaleString('en-US');
|
|
const toggleClass = (el, className) => el.classList.toggle(className);
|
|
const toHash = (object, key) =>
|
|
Array.prototype.reduce.call(
|
|
object,
|
|
(acc, data, index) => ((acc[!key ? index : data[key]] = data), acc),
|
|
{}
|
|
);
|
|
const toKebabCase = str =>
|
|
str &&
|
|
str
|
|
.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
|
|
.map(x => x.toLowerCase())
|
|
.join('-');
|
|
const tomorrow = () => {
|
|
let t = new Date();
|
|
t.setDate(t.getDate() + 1);
|
|
return t.toISOString().split('T')[0];
|
|
};
|
|
const toOrdinalSuffix = num => {
|
|
const int = parseInt(num),
|
|
digits = [int % 10, int % 100],
|
|
ordinals = ['st', 'nd', 'rd', 'th'],
|
|
oPattern = [1, 2, 3, 4],
|
|
tPattern = [11, 12, 13, 14, 15, 16, 17, 18, 19];
|
|
return oPattern.includes(digits[0]) && !tPattern.includes(digits[1])
|
|
? int + ordinals[digits[0] - 1]
|
|
: int + ordinals[3];
|
|
};
|
|
const toSafeInteger = num =>
|
|
Math.round(Math.max(Math.min(num, Number.MAX_SAFE_INTEGER), Number.MIN_SAFE_INTEGER));
|
|
const toSnakeCase = str =>
|
|
str &&
|
|
str
|
|
.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
|
|
.map(x => x.toLowerCase())
|
|
.join('_');
|
|
const toTitleCase = str =>
|
|
str
|
|
.match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
|
|
.map(x => x.charAt(0).toUpperCase() + x.slice(1))
|
|
.join(' ');
|
|
const transform = (obj, fn, acc) => Object.keys(obj).reduce((a, k) => fn(a, obj[k], k, obj), acc);
|
|
const triggerEvent = (el, eventType, detail) =>
|
|
el.dispatchEvent(new CustomEvent(eventType, { detail }));
|
|
const truncateString = (str, num) =>
|
|
str.length > num ? str.slice(0, num > 3 ? num - 3 : num) + '...' : str;
|
|
const truthCheckCollection = (collection, pre) => collection.every(obj => obj[pre]);
|
|
const unary = fn => val => fn(val);
|
|
const uncurry = (fn, n = 1) => (...args) => {
|
|
const next = acc => args => args.reduce((x, y) => x(y), acc);
|
|
if (n > args.length) throw new RangeError('Arguments too few!');
|
|
return next(fn)(args.slice(0, n));
|
|
};
|
|
const unescapeHTML = str =>
|
|
str.replace(
|
|
/&|<|>|'|"/g,
|
|
tag =>
|
|
({
|
|
'&': '&',
|
|
'<': '<',
|
|
'>': '>',
|
|
''': "'",
|
|
'"': '"'
|
|
}[tag] || tag)
|
|
);
|
|
const unflattenObject = obj =>
|
|
Object.keys(obj).reduce((acc, k) => {
|
|
if (k.indexOf('.') !== -1) {
|
|
const keys = k.split('.');
|
|
Object.assign(
|
|
acc,
|
|
JSON.parse(
|
|
'{' +
|
|
keys.map((v, i) => (i !== keys.length - 1 ? `"${v}":{` : `"${v}":`)).join('') +
|
|
obj[k] +
|
|
'}'.repeat(keys.length)
|
|
)
|
|
);
|
|
} else acc[k] = obj[k];
|
|
return acc;
|
|
}, {});
|
|
const unfold = (fn, seed) => {
|
|
let result = [],
|
|
val = [null, seed];
|
|
while ((val = fn(val[1]))) result.push(val[0]);
|
|
return result;
|
|
};
|
|
const union = (a, b) => Array.from(new Set([...a, ...b]));
|
|
const unionBy = (a, b, fn) => {
|
|
const s = new Set(a.map(fn));
|
|
return Array.from(new Set([...a, ...b.filter(x => !s.has(fn(x)))]));
|
|
};
|
|
const unionWith = (a, b, comp) =>
|
|
Array.from(new Set([...a, ...b.filter(x => a.findIndex(y => comp(x, y)) === -1)]));
|
|
const uniqueElements = arr => [...new Set(arr)];
|
|
const uniqueElementsBy = (arr, fn) =>
|
|
arr.reduce((acc, v) => {
|
|
if (!acc.some(x => fn(v, x))) acc.push(v);
|
|
return acc;
|
|
}, []);
|
|
const uniqueElementsByRight = (arr, fn) =>
|
|
arr.reduceRight((acc, v) => {
|
|
if (!acc.some(x => fn(v, x))) acc.push(v);
|
|
return acc;
|
|
}, []);
|
|
const uniqueSymmetricDifference = (a, b) => [
|
|
...new Set([...a.filter(v => !b.includes(v)), ...b.filter(v => !a.includes(v))])
|
|
];
|
|
const untildify = str => str.replace(/^~($|\/|\\)/, `${require('os').homedir()}$1`);
|
|
const unzip = arr =>
|
|
arr.reduce(
|
|
(acc, val) => (val.forEach((v, i) => acc[i].push(v)), acc),
|
|
Array.from({
|
|
length: Math.max(...arr.map(x => x.length))
|
|
}).map(x => [])
|
|
);
|
|
const unzipWith = (arr, fn) =>
|
|
arr
|
|
.reduce(
|
|
(acc, val) => (val.forEach((v, i) => acc[i].push(v)), acc),
|
|
Array.from({
|
|
length: Math.max(...arr.map(x => x.length))
|
|
}).map(x => [])
|
|
)
|
|
.map(val => fn(...val));
|
|
const URLJoin = (...args) =>
|
|
args
|
|
.join('/')
|
|
.replace(/[\/]+/g, '/')
|
|
.replace(/^(.+):\//, '$1://')
|
|
.replace(/^file:/, 'file:/')
|
|
.replace(/\/(\?|&|#[^!])/g, '$1')
|
|
.replace(/\?/g, '&')
|
|
.replace('&', '?');
|
|
const UUIDGeneratorBrowser = () =>
|
|
([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
|
|
(c ^ (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))).toString(16)
|
|
);
|
|
|
|
const UUIDGeneratorNode = () =>
|
|
([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
|
|
(c ^ (crypto.randomBytes(1)[0] & (15 >> (c / 4)))).toString(16)
|
|
);
|
|
const validateNumber = n => !isNaN(parseFloat(n)) && isFinite(n) && Number(n) == n;
|
|
const vectorDistance = (...coords) => {
|
|
let pointLength = Math.trunc(coords.length / 2);
|
|
let sum = coords
|
|
.slice(0, pointLength)
|
|
.reduce((acc, val, i) => acc + Math.pow(val - coords[pointLength + i], 2), 0);
|
|
return Math.sqrt(sum);
|
|
};
|
|
const weightedSample = (arr, weights) => {
|
|
let roll = Math.random();
|
|
return arr[
|
|
weights
|
|
.reduce((acc, w, i) => (i === 0 ? [w] : [...acc, acc[acc.length - 1] + w]), [])
|
|
.findIndex((v, i, s) => roll >= (i === 0 ? 0 : s[i - 1]) && roll < v)
|
|
];
|
|
};
|
|
const when = (pred, whenTrue) => x => (pred(x) ? whenTrue(x) : x);
|
|
const without = (arr, ...args) => arr.filter(v => !args.includes(v));
|
|
const words = (str, pattern = /[^a-zA-Z-]+/) => str.split(pattern).filter(Boolean);
|
|
const xProd = (a, b) => a.reduce((acc, x) => acc.concat(b.map(y => [x, y])), []);
|
|
const yesNo = (val, def = false) =>
|
|
/^(y|yes)$/i.test(val) ? true : /^(n|no)$/i.test(val) ? false : def;
|
|
const yesterday = () => {
|
|
let t = new Date();
|
|
t.setDate(t.getDate() - 1);
|
|
return t.toISOString().split('T')[0];
|
|
};
|
|
const zip = (...arrays) => {
|
|
const maxLength = Math.max(...arrays.map(x => x.length));
|
|
return Array.from({ length: maxLength }).map((_, i) => {
|
|
return Array.from({ length: arrays.length }, (_, k) => arrays[k][i]);
|
|
});
|
|
};
|
|
const zipObject = (props, values) =>
|
|
props.reduce((obj, prop, index) => ((obj[prop] = values[index]), obj), {});
|
|
const zipWith = (...array) => {
|
|
const fn = typeof array[array.length - 1] === 'function' ? array.pop() : undefined;
|
|
return Array.from({ length: Math.max(...array.map(a => a.length)) }, (_, i) =>
|
|
fn ? fn(...array.map(a => a[i])) : array.map(a => a[i])
|
|
);
|
|
};
|
|
const binarySearch = (arr, val, start = 0, end = arr.length - 1) => {
|
|
if (start > end) return -1;
|
|
const mid = Math.floor((start + end) / 2);
|
|
if (arr[mid] > val) return binarySearch(arr, val, start, mid - 1);
|
|
if (arr[mid] < val) return binarySearch(arr, val, mid + 1, end);
|
|
return mid;
|
|
};
|
|
const celsiusToFahrenheit = degrees => 1.8 * degrees + 32;
|
|
const cleanObj = (obj, keysToKeep = [], childIndicator) => {
|
|
Object.keys(obj).forEach(key => {
|
|
if (key === childIndicator) {
|
|
cleanObj(obj[key], keysToKeep, childIndicator);
|
|
} else if (!keysToKeep.includes(key)) {
|
|
delete obj[key];
|
|
}
|
|
});
|
|
return obj;
|
|
};
|
|
const collatz = n => (n % 2 === 0 ? n / 2 : 3 * n + 1);
|
|
const countVowels = str => (str.match(/[aeiou]/gi) || []).length;
|
|
const factors = (num, primes = false) => {
|
|
const isPrime = num => {
|
|
const boundary = Math.floor(Math.sqrt(num));
|
|
for (var i = 2; i <= boundary; i++) if (num % i === 0) return false;
|
|
return num >= 2;
|
|
};
|
|
const isNeg = num < 0;
|
|
num = isNeg ? -num : num;
|
|
let array = Array.from({ length: num - 1 })
|
|
.map((val, i) => (num % (i + 2) === 0 ? i + 2 : false))
|
|
.filter(val => val);
|
|
if (isNeg)
|
|
array = array.reduce((acc, val) => {
|
|
acc.push(val);
|
|
acc.push(-val);
|
|
return acc;
|
|
}, []);
|
|
return primes ? array.filter(isPrime) : array;
|
|
};
|
|
const fahrenheitToCelsius = degrees => (degrees - 32) * 5/9;
|
|
const fibonacciCountUntilNum = num =>
|
|
Math.ceil(Math.log(num * Math.sqrt(5) + 1 / 2) / Math.log((Math.sqrt(5) + 1) / 2));
|
|
const fibonacciUntilNum = num => {
|
|
let n = Math.ceil(Math.log(num * Math.sqrt(5) + 1 / 2) / Math.log((Math.sqrt(5) + 1) / 2));
|
|
return Array.from({ length: n }).reduce(
|
|
(acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
|
|
[]
|
|
);
|
|
};
|
|
const heronArea = (side_a, side_b, side_c) => {
|
|
const p = (side_a + side_b + side_c) / 2
|
|
return Math.sqrt(p * (p-side_a) * (p-side_b) * (p-side_c))
|
|
};
|
|
const howManyTimes = (num, divisor) => {
|
|
if (divisor === 1 || divisor === -1) return Infinity;
|
|
if (divisor === 0) return 0;
|
|
let i = 0;
|
|
while (Number.isInteger(num / divisor)) {
|
|
i++;
|
|
num = num / divisor;
|
|
}
|
|
return i;
|
|
};
|
|
const httpDelete = (url, callback, err = console.error) => {
|
|
const request = new XMLHttpRequest();
|
|
request.open('DELETE', url, true);
|
|
request.onload = () => callback(request);
|
|
request.onerror = () => err(request);
|
|
request.send();
|
|
};
|
|
const httpPut = (url, data, callback, err = console.error) => {
|
|
const request = new XMLHttpRequest();
|
|
request.open("PUT", url, true);
|
|
request.setRequestHeader('Content-type','application/json; charset=utf-8');
|
|
request.onload = () => callback(request);
|
|
request.onerror = () => err(request);
|
|
request.send(data);
|
|
};
|
|
const isArmstrongNumber = digits =>
|
|
(arr => arr.reduce((a, d) => a + parseInt(d) ** arr.length, 0) == digits)(
|
|
(digits + '').split('')
|
|
);
|
|
const isSimilar = (pattern, str) =>
|
|
[...str].reduce(
|
|
(matchIndex, char) =>
|
|
char.toLowerCase() === (pattern[matchIndex] || '').toLowerCase()
|
|
? matchIndex + 1
|
|
: matchIndex,
|
|
0
|
|
) === pattern.length;
|
|
const JSONToDate = arr => {
|
|
const dt = new Date(parseInt(arr.toString().substr(6)));
|
|
return `${dt.getDate()}/${dt.getMonth() + 1}/${dt.getFullYear()}`;
|
|
};
|
|
const kmphToMph = (kmph) => 0.621371192 * kmph;
|
|
const levenshteinDistance = (string1, string2) => {
|
|
if (string1.length === 0) return string2.length;
|
|
if (string2.length === 0) return string1.length;
|
|
let matrix = Array(string2.length + 1)
|
|
.fill(0)
|
|
.map((x, i) => [i]);
|
|
matrix[0] = Array(string1.length + 1)
|
|
.fill(0)
|
|
.map((x, i) => i);
|
|
for (let i = 1; i <= string2.length; i++) {
|
|
for (let j = 1; j <= string1.length; j++) {
|
|
if (string2[i - 1] === string1[j - 1]) {
|
|
matrix[i][j] = matrix[i - 1][j - 1];
|
|
} else {
|
|
matrix[i][j] = Math.min(
|
|
matrix[i - 1][j - 1] + 1,
|
|
matrix[i][j - 1] + 1,
|
|
matrix[i - 1][j] + 1
|
|
);
|
|
}
|
|
}
|
|
}
|
|
return matrix[string2.length][string1.length];
|
|
};
|
|
const mphToKmph = (mph) => 1.6093440006146922 * mph;
|
|
const pipeLog = data => console.log(data) || data;
|
|
const quickSort = ([n, ...nums], desc) =>
|
|
isNaN(n)
|
|
? []
|
|
: [
|
|
...quickSort(nums.filter(v => (desc ? v > n : v <= n)), desc),
|
|
n,
|
|
...quickSort(nums.filter(v => (!desc ? v > n : v <= n)), desc)
|
|
];
|
|
const removeVowels = (str, repl = '') => str.replace(/[aeiou]/gi, repl);
|
|
const solveRPN = rpn => {
|
|
const OPERATORS = {
|
|
'*': (a, b) => a * b,
|
|
'+': (a, b) => a + b,
|
|
'-': (a, b) => a - b,
|
|
'/': (a, b) => a / b,
|
|
'**': (a, b) => a ** b
|
|
};
|
|
const [stack, solve] = [
|
|
[],
|
|
rpn
|
|
.replace(/\^/g, '**')
|
|
.split(/\s+/g)
|
|
.filter(el => !/\s+/.test(el) && el !== '')
|
|
];
|
|
solve.forEach(symbol => {
|
|
if (!isNaN(parseFloat(symbol)) && isFinite(symbol)) {
|
|
stack.push(symbol);
|
|
} else if (Object.keys(OPERATORS).includes(symbol)) {
|
|
const [a, b] = [stack.pop(), stack.pop()];
|
|
stack.push(OPERATORS[symbol](parseFloat(b), parseFloat(a)));
|
|
} else {
|
|
throw `${symbol} is not a recognized symbol`;
|
|
}
|
|
});
|
|
if (stack.length === 1) return stack.pop();
|
|
else throw `${rpn} is not a proper RPN. Please check it and try again`;
|
|
};
|
|
const speechSynthesis = message => {
|
|
const msg = new SpeechSynthesisUtterance(message);
|
|
msg.voice = window.speechSynthesis.getVoices()[0];
|
|
window.speechSynthesis.speak(msg);
|
|
};
|
|
const squareSum = (...args) => args.reduce((squareSum, number) => squareSum + Math.pow(number, 2), 0);
|
|
|
|
|
|
module.exports = {all,allEqual,any,approximatelyEqual,arrayToCSV,arrayToHtmlList,ary,atob,attempt,average,averageBy,bifurcate,bifurcateBy,bind,bindAll,bindKey,binomialCoefficient,bottomVisible,btoa,byteSize,call,capitalize,capitalizeEveryWord,castArray,chainAsync,checkProp,chunk,clampNumber,cloneRegExp,coalesce,coalesceFactory,collectInto,colorize,compact,compactWhitespace,compose,composeRight,converge,copyToClipboard,countBy,counter,countOccurrences,createDirIfNotExists,createElement,createEventHub,CSVToArray,CSVToJSON,currentURL,curry,dayOfYear,debounce,decapitalize,deepClone,deepFlatten,deepFreeze,deepGet,deepMapKeys,defaults,defer,degreesToRads,delay,detectDeviceType,difference,differenceBy,differenceWith,dig,digitize,distance,drop,dropRight,dropRightWhile,dropWhile,elementContains,elementIsVisibleInViewport,elo,equals,escapeHTML,escapeRegExp,everyNth,extendHex,factorial,fibonacci,filterFalsy,filterNonUnique,filterNonUniqueBy,findKey,findLast,findLastIndex,findLastKey,flatten,flattenObject,flip,forEachRight,formatDuration,formToObject,forOwn,forOwnRight,frequencies,fromCamelCase,functionName,functions,gcd,geometricProgression,get,getColonTimeFromDate,getDaysDiffBetweenDates,getImages,getMeridiemSuffixOfInteger,getScrollPosition,getStyle,getType,getURLParameters,groupBy,hammingDistance,hasClass,hasFlags,hashBrowser,hashNode,hasKey,haveSameContents,head,hexToRGB,hide,httpGet,httpPost,httpsRedirect,hz,includesAll,includesAny,indentString,indexOfAll,initial,initialize2DArray,initializeArrayWithRange,initializeArrayWithRangeRight,initializeArrayWithValues,initializeNDArray,inRange,insertAfter,insertBefore,intersection,intersectionBy,intersectionWith,invertKeyValues,is,isAbsoluteURL,isAfterDate,isAnagram,isArrayLike,isBeforeDate,isBoolean,isBrowser,isBrowserTabFocused,isContainedIn,isDivisible,isDuplexStream,isEmpty,isEven,isFunction,isLowerCase,isNegativeZero,isNil,isNull,isNumber,isObject,isObjectLike,isOdd,isPlainObject,isPowerOfTwo,isPrime,isPrimitive,isPromiseLike,isReadableStream,isSameDate,isSorted,isStream,isString,isSymbol,isTravisCI,isUndefined,isUpperCase,isValidJSON,isWeekday,isWeekend,isWritableStream,join,JSONtoCSV,JSONToFile,last,lcm,longestItem,lowercaseKeys,luhnCheck,mapKeys,mapNumRange,mapObject,mapString,mapValues,mask,matches,matchesWith,maxBy,maxDate,maxN,median,memoize,merge,midpoint,minBy,minDate,minN,mostFrequent,mostPerformant,negate,nest,nodeListToArray,none,nthArg,nthElement,objectFromPairs,objectToPairs,objectToQueryString,observeMutations,off,offset,omit,omitBy,on,once,onUserInputChange,orderBy,over,overArgs,pad,palindrome,parseCookie,partial,partialRight,partition,percentile,permutations,pick,pickBy,pipeAsyncFunctions,pipeFunctions,pluralize,powerset,prefix,prettyBytes,primes,promisify,pull,pullAtIndex,pullAtValue,pullBy,radsToDegrees,randomHexColorCode,randomIntArrayInRange,randomIntegerInRange,randomNumberInRange,readFileLines,rearg,recordAnimationFrames,redirect,reducedFilter,reduceSuccessive,reduceWhich,reject,remove,removeNonASCII,renameKeys,reverseString,RGBToHex,round,runAsync,runPromisesInSeries,sample,sampleSize,scrollToTop,sdbm,serializeCookie,serializeForm,setStyle,shallowClone,shank,show,shuffle,similarity,size,sleep,smoothScroll,sortCharactersInString,sortedIndex,sortedIndexBy,sortedLastIndex,sortedLastIndexBy,splitLines,spreadOver,stableSort,standardDeviation,stringPermutations,stripHTMLTags,sum,sumBy,sumPower,symmetricDifference,symmetricDifferenceBy,symmetricDifferenceWith,tail,take,takeRight,takeRightWhile,takeWhile,throttle,times,timeTaken,toCamelCase,toCurrency,toDecimalMark,toggleClass,toHash,toKebabCase,tomorrow,toOrdinalSuffix,toSafeInteger,toSnakeCase,toTitleCase,transform,triggerEvent,truncateString,truthCheckCollection,unary,uncurry,unescapeHTML,unflattenObject,unfold,union,unionBy,unionWith,uniqueElements,uniqueElementsBy,uniqueElementsByRight,uniqueSymmetricDifference,untildify,unzip,unzipWith,URLJoin,UUIDGeneratorBrowser,UUIDGeneratorNode,validateNumber,vectorDistance,weightedSample,when,without,words,xProd,yesNo,yesterday,zip,zipObject,zipWith,binarySearch,celsiusToFahrenheit,cleanObj,collatz,countVowels,factors,fahrenheitToCelsius,fibonacciCountUntilNum,fibonacciUntilNum,heronArea,howManyTimes,httpDelete,httpPut,isArmstrongNumber,isSimilar,JSONToDate,kmphToMph,levenshteinDistance,mphToKmph,pipeLog,quickSort,removeVowels,solveRPN,speechSynthesis,squareSum} |