Function isDecimalDigit

lib/assets/javascripts/JSXTransformer.js:2649–2651

(ch)

    };

    function isDecimalDigit(ch) {
        return (ch >= 48 && ch <= 57);   // 0..9
    }

    function isHexDigit(ch) {
        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;