@stylistic/stylelint-plugin/lib/utils/isCustomMediaQuery/index.js

A collection of stylistic/formatting Stylelint rules

/**
 * Checks whether a media query is a custom one.
 * @param {string} mediaQuery - The media query string.
 * @returns {boolean} True if the media query is custom, false otherwise.
 */
export function isCustomMediaQuery (mediaQuery) {
	return mediaQuery.startsWith(`--`)
}