mirror of
https://github.com/balena-io/etcher.git
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d8e31665a0
- Extend the `standard` ESLint configuration - Remove ESLint rules that are defined in the `standard` configuration - Get rid of semi-colons See: https://github.com/resin-io/etcher/pull/1657 Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
94 lines
1.9 KiB
JavaScript
94 lines
1.9 KiB
JavaScript
/*
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* Copyright 2016 resin.io
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict'
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const _ = require('lodash')
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const prettyBytes = require('pretty-bytes')
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/**
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* @summary Megabyte to byte ratio
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* @constant
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* @private
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* @type {Number}
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*
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* @description
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* 1 MB = 1e+6 B
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*/
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const MEGABYTE_TO_BYTE_RATIO = 1e+6
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/**
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* @summary Milliseconds in a day
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* @constant
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* @private
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* @type {Number}
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*
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* @description
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* From 24 * 60 * 60 * 1000
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*/
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const MILLISECONDS_IN_A_DAY = 86400000
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/**
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* @summary Convert bytes to megabytes
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* @function
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* @public
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*
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* @param {Number} bytes - bytes
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* @returns {Number} megabytes
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*
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* @example
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* const result = units.bytesToMegabytes(7801405440);
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*/
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exports.bytesToMegabytes = (bytes) => {
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return bytes / MEGABYTE_TO_BYTE_RATIO
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}
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/**
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* @summary Convert bytes to most appropriate unit string
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* @function
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* @public
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*
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* @param {Number} bytes - bytes
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* @returns {String} size and unit string
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*
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* @example
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* const humanReadable = units.bytesToClosestUnit(7801405440);
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* > '7.8 GB'
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*/
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exports.bytesToClosestUnit = (bytes) => {
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if (_.isNumber(bytes)) {
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return prettyBytes(bytes)
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}
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return null
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}
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/**
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* @summary Convert days to milliseconds
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* @function
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* @public
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*
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* @param {Number} days - days
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* @returns {Number} milliseconds
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*
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* @example
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* const result = units.daysToMilliseconds(2);
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*/
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exports.daysToMilliseconds = (days) => {
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return days * MILLISECONDS_IN_A_DAY
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}
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