/*!
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* pretty-time <https://github.com/jonschlinkert/pretty-time>
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*
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* Copyright (c) 2015-2018, present, Jon Schlinkert.
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* Released under the MIT License.
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*/
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'use strict';
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const utils = require('./utils');
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module.exports = (time, smallest, digits) => {
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const isNumber = /^[0-9]+$/.test(time);
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if (!isNumber && !Array.isArray(time)) {
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throw new TypeError('expected an array or number in nanoseconds');
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}
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if (Array.isArray(time) && time.length !== 2) {
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throw new TypeError('expected an array from process.hrtime()');
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}
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if (/^[0-9]+$/.test(smallest)) {
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digits = smallest;
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smallest = null;
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}
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let num = isNumber ? time : utils.nano(time);
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let res = '';
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let prev;
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for (const uom of Object.keys(utils.scale)) {
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const step = utils.scale[uom];
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let inc = num / step;
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if (smallest && utils.isSmallest(uom, smallest)) {
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inc = utils.round(inc, digits);
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if (prev && (inc === (prev / step))) --inc;
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res += inc + uom;
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return res.trim();
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}
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if (inc < 1) continue;
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if (!smallest) {
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inc = utils.round(inc, digits);
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res += inc + uom;
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return res;
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}
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prev = step;
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inc = Math.floor(inc);
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num -= (inc * step);
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res += inc + uom + ' ';
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}
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return res.trim();
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};
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