File "prefixSelector.js"
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import parser from 'postcss-selector-parser'
/**
* @template {string | import('postcss-selector-parser').Root} T
*
* Prefix all classes in the selector with the given prefix
*
* It can take either a string or a selector AST and will return the same type
*
* @param {string} prefix
* @param {T} selector
* @param {boolean} prependNegative
* @returns {T}
*/
export default function (prefix, selector, prependNegative = false) {
if (prefix === '') {
return selector
}
/** @type {import('postcss-selector-parser').Root} */
let ast = typeof selector === 'string' ? parser().astSync(selector) : selector
ast.walkClasses((classSelector) => {
let baseClass = classSelector.value
let shouldPlaceNegativeBeforePrefix = prependNegative && baseClass.startsWith('-')
classSelector.value = shouldPlaceNegativeBeforePrefix
? `-${prefix}${baseClass.slice(1)}`
: `${prefix}${baseClass}`
})
return typeof selector === 'string' ? ast.toString() : ast
}