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Mini Shell
Mini Shell
let { list } = require('postcss')
module.exports = {
/**
* Throw special error, to tell beniary,
* that this error is from Autoprefixer.
*/
error (text) {
let err = new Error(text)
err.autoprefixer = true
throw err
},
/**
* Return array, that doesn’t contain duplicates.
*/
uniq (array) {
return [...new Set(array)]
},
/**
* Return "-webkit-" on "-webkit- old"
*/
removeNote (string) {
if (!string.includes(' ')) {
return string
}
return string.split(' ')[0]
},
/**
* Escape RegExp symbols
*/
escapeRegexp (string) {
return string.replace(/[$()*+-.?[\\\]^{|}]/g, '\\$&')
},
/**
* Return regexp to check, that CSS string contain word
*/
regexp (word, escape = true) {
if (escape) {
word = this.escapeRegexp(word)
}
return new RegExp(`(^|[\\s,(])(${word}($|[\\s(,]))`, 'gi')
},
/**
* Change comma list
*/
editList (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
*/
splitSelector (selector) {
return list.comma(selector).map(i => {
return list.space(i).map(k => {
return k.split(/(?=\.|#)/g)
})
})
}
}
Zerion Mini Shell 1.0