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