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mathjs

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Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

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'use strict'; module.exports = prompt => { prompt.timers = prompt.timers || {}; let timers = prompt.options.timers; if (!timers) return; for (let key of Object.keys(timers)) { let opts = timers[key]; if (typeof opts === 'number') { opts = { interval: opts }; } create(prompt, key, opts); } }; function create(prompt, name, options = {}) { let timer = prompt.timers[name] = { name, start: Date.now(), ms: 0, tick: 0 }; let ms = options.interval || 120; timer.frames = options.frames || []; timer.loading = true; let interval = setInterval(() => { timer.ms = Date.now() - timer.start; timer.tick++; prompt.render(); }, ms); timer.stop = () => { timer.loading = false; clearInterval(interval); }; Reflect.defineProperty(timer, 'interval', { value: interval }); prompt.once('close', () => timer.stop()); return timer.stop; }