mirror of
https://github.com/balena-io/etcher.git
synced 2025-04-20 05:17:18 +00:00
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>
81 lines
1.8 KiB
JavaScript
81 lines
1.8 KiB
JavaScript
/*
|
|
* Copyright 2017 resin.io
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
'use strict'
|
|
|
|
const _ = require('lodash')
|
|
const errors = require('./errors')
|
|
|
|
/**
|
|
* @summary Minimum percentage value
|
|
* @constant
|
|
* @public
|
|
* @type {Number}
|
|
*/
|
|
exports.PERCENTAGE_MINIMUM = 0
|
|
|
|
/**
|
|
* @summary Maximum percentage value
|
|
* @constant
|
|
* @public
|
|
* @type {Number}
|
|
*/
|
|
exports.PERCENTAGE_MAXIMUM = 100
|
|
|
|
/**
|
|
* @summary Check if a percentage is valid
|
|
* @function
|
|
* @public
|
|
*
|
|
* @param {Number} percentage - percentage
|
|
* @returns {Boolean} whether the percentage is valid
|
|
*
|
|
* @example
|
|
* if (utils.isValidPercentage(85)) {
|
|
* console.log('The percentage is valid');
|
|
* }
|
|
*/
|
|
exports.isValidPercentage = (percentage) => {
|
|
return _.every([
|
|
_.isNumber(percentage),
|
|
percentage >= exports.PERCENTAGE_MINIMUM,
|
|
percentage <= exports.PERCENTAGE_MAXIMUM
|
|
])
|
|
}
|
|
|
|
/**
|
|
* @summary Convert a percentage to a float
|
|
* @function
|
|
* @public
|
|
*
|
|
* @param {Number} percentage - percentage
|
|
* @returns {Number} float percentage
|
|
*
|
|
* @example
|
|
* const value = utils.percentageToFloat(50);
|
|
* console.log(value);
|
|
* > 0.5
|
|
*/
|
|
exports.percentageToFloat = (percentage) => {
|
|
if (!exports.isValidPercentage(percentage)) {
|
|
throw errors.createError({
|
|
title: `Invalid percentage: ${percentage}`
|
|
})
|
|
}
|
|
|
|
return percentage / exports.PERCENTAGE_MAXIMUM
|
|
}
|