node_modules/stylelint/lib/utils/isNumbery.mjs

/**
 * Check whether it's a number or a number-like string:
 * i.e. when coerced to a number it == itself.
 *
 * @param {string | number} value
 */
export default function isNumbery(value) {
	return value.toString().trim().length !== 0 && Number(value) == value; // eslint-disable-line eqeqeq
}