* @param {string} text * @returns {number}

* Handles pseudo-snippet node. * A pseudo-snippet is a text-only node with explicitly defined children. * For such case, we have to figure out if

* @param {any} value * @param {string[]=} types

* Check if given code is a number * @param {Number} code * @return {Boolean}

* Check if given syntax belongs to stylesheet markup. * Emmet uses different abbreviation flavours: one is a default markup syntax, * used for HTM

* Returns true if the file is open in synchronous mode.