Function charCode

docs/tests/v2/es6/js/sanddance.js:141235–141238

(chr)

    // Gets the decimal code of a literal code unit, \xHH, \uHHHH, or a backslash-escaped literal
    function charCode(chr) {
        var esc = /^\\[xu](.+)/.exec(chr);
        return esc ? dec(esc[1]) : chr.charCodeAt(chr[0] === '\\' ? 1 : 0);
    }

    // Inverts a list of ordered BMP characters and ranges
    function invertBmp(range) {