import { reUnicode } from "../basic/_global";

/**
 * Gets the size of a Unicode `string`.
 *
 * @private
 * @param {string} string The string inspect.
 * @returns {number} Returns the string size.
 */
function unicodeSize(string: string): number {
    let result = (reUnicode.lastIndex = 0);
    while (reUnicode.test(string)) {
        ++result;
    }
    return result;
}

export default unicodeSize;
// /** Used to compose unicode character classes. */
// const rsAstralRange = "\\ud800-\\udfff";
// const rsComboMarksRange = "\\u0300-\\u036f";
// const reComboHalfMarksRange = "\\ufe20-\\ufe2f";
// const rsComboSymbolsRange = "\\u20d0-\\u20ff";
// const rsComboMarksExtendedRange = "\\u1ab0-\\u1aff";
// const rsComboMarksSupplementRange = "\\u1dc0-\\u1dff";
// const rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange + rsComboMarksExtendedRange + rsComboMarksSupplementRange;
// const rsVarRange = "\\ufe0e\\ufe0f";

// /** Used to compose unicode capture groups. */
// const rsAstral = `[${rsAstralRange}]`;
// const rsCombo = `[${rsComboRange}]`;
// const rsFitz = "\\ud83c[\\udffb-\\udfff]";
// const rsModifier = `(?:${rsCombo}|${rsFitz})`;
// const rsNonAstral = `[^${rsAstralRange}]`;
// const rsRegional = "(?:\\ud83c[\\udde6-\\uddff]){2}";
// const rsSurrPair = "[\\ud800-\\udbff][\\udc00-\\udfff]";
// const rsZWJ = "\\u200d";

// /** Used to compose unicode regexes. */
// const reOptMod = `${rsModifier}?`;
// const rsOptVar = `[${rsVarRange}]?`;
// const rsOptJoin = `(?:${rsZWJ}(?:${[rsNonAstral, rsRegional, rsSurrPair].join("|")})${rsOptVar + reOptMod})*`;
// const rsSeq = rsOptVar + reOptMod + rsOptJoin;
// const rsNonAstralCombo = `${rsNonAstral}${rsCombo}?`;
// const rsSymbol = `(?:${[rsNonAstralCombo, rsCombo, rsRegional, rsSurrPair, rsAstral].join("|")})`;

// /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
// const reUnicode = RegExp(`${rsFitz}(?=${rsFitz})|${rsSymbol + rsSeq}`, "g");

// /**
//  * Gets the size of a Unicode `string`.
//  *
//  * @private
//  * @param {string} string The string inspect.
//  * @returns {number} Returns the string size.
//  */
// function unicodeSize(string) {
//     let result = (reUnicode.lastIndex = 0);
//     while (reUnicode.test(string)) {
//         ++result;
//     }
//     return result;
// }

// export default unicodeSize;