94 lines
2.0 KiB
JavaScript
94 lines
2.0 KiB
JavaScript
let { list } = require('postcss')
|
||
|
||
/**
|
||
* Throw special error, to tell beniary,
|
||
* that this error is from Autoprefixer.
|
||
*/
|
||
module.exports.error = function (text) {
|
||
let err = new Error(text)
|
||
err.autoprefixer = true
|
||
throw err
|
||
}
|
||
|
||
/**
|
||
* Return array, that doesn’t contain duplicates.
|
||
*/
|
||
module.exports.uniq = function (array) {
|
||
return [...new Set(array)]
|
||
}
|
||
|
||
/**
|
||
* Return "-webkit-" on "-webkit- old"
|
||
*/
|
||
module.exports.removeNote = function (string) {
|
||
if (!string.includes(' ')) {
|
||
return string
|
||
}
|
||
|
||
return string.split(' ')[0]
|
||
}
|
||
|
||
/**
|
||
* Escape RegExp symbols
|
||
*/
|
||
module.exports.escapeRegexp = function (string) {
|
||
return string.replace(/[$()*+-.?[\\\]^{|}]/g, '\\$&')
|
||
}
|
||
|
||
/**
|
||
* Return regexp to check, that CSS string contain word
|
||
*/
|
||
module.exports.regexp = function (word, escape = true) {
|
||
if (escape) {
|
||
word = this.escapeRegexp(word)
|
||
}
|
||
return new RegExp(`(^|[\\s,(])(${word}($|[\\s(,]))`, 'gi')
|
||
}
|
||
|
||
/**
|
||
* Change comma list
|
||
*/
|
||
module.exports.editList = function (value, callback) {
|
||
let origin = list.comma(value)
|
||
let changed = callback(origin, [])
|
||
|
||
if (origin === changed) {
|
||
return value
|
||
}
|
||
|
||
let join = value.match(/,\s*/)
|
||
join = join ? join[0] : ', '
|
||
return changed.join(join)
|
||
}
|
||
|
||
/**
|
||
* Split the selector into parts.
|
||
* It returns 3 level deep array because selectors can be comma
|
||
* separated (1), space separated (2), and combined (3)
|
||
* @param {String} selector selector string
|
||
* @return {Array<Array<Array>>} 3 level deep array of split selector
|
||
* @see utils.test.js for examples
|
||
*/
|
||
module.exports.splitSelector = function (selector) {
|
||
return list.comma(selector).map(i => {
|
||
return list.space(i).map(k => {
|
||
return k.split(/(?=\.|#)/g)
|
||
})
|
||
})
|
||
}
|
||
|
||
/**
|
||
* Return true if a given value only contains numbers.
|
||
* @param {*} value
|
||
* @returns {boolean}
|
||
*/
|
||
module.exports.isPureNumber = function (value) {
|
||
if (typeof value === 'number') {
|
||
return true
|
||
}
|
||
if (typeof value === 'string') {
|
||
return /^[0-9]+$/.test(value)
|
||
}
|
||
return false
|
||
}
|