vue2-filters/src/other/bytes.js

A collection of Vue.js filters

import util from '../util/index'

/**
 * 1                => '8 byte'
 * 8                => '8 bytes'
 * 1024             => '1.00 kB'
 * 2000000          => '1.90 MB'
 * 2000000000       => '1.86 GB'
 * 2000000000000    => '1.82 TB'
 *
 * @param {Number} value
 * @param {Number} decimals Decimal places (default: 2)
 */
function bytes(value, decimals) {
    const globalOptions = (this && this.bytes) ? this.bytes : {}
    decimals = util.exist(decimals) ? decimals : globalOptions.decimalDigits
    decimals = (typeof decimals !== 'undefined') ? decimals : 2
    value = value === null || isNaN(value) ? 0 : value
    
    if (value >= Math.pow(1024, 4)) {
        // TB
        return `${(value / Math.pow(1024, 4)).toFixed(decimals)} TB`
    } else if (value >= Math.pow(1024, 3)) {
        // GB
        return `${(value / Math.pow(1024, 3)).toFixed(decimals)} GB`
    } else if (value >= Math.pow(1024, 2)) {
        // MB
        return `${(value / Math.pow(1024, 2)).toFixed(decimals)} MB`
    } else if (value >= 1024) {
        // kb
        return `${(value / 1024).toFixed(decimals)} kB`
    }
    // byte
    return value === 1 ? `${value} byte` : `${value} bytes`
}

export default bytes