01-sparkler-rbt-tag-in.js

function balance {
  ['black', ['red', ['red', *, *, *], *, *], *, *] => 'balance-1',
  ['black', ['red', *, *, ['red', *, *, *]], *, *] => 'balance-2',
  ['black', *, *, ['red', ['red', *, *, *], *, *]] => 'balance-3',
  ['black', *, *, ['red', *, *, ['red', *, *, *]]] => 'balance-4',
  *                                                => 'balanced'
}

02-sparkler-rbt-tag-out.js

function balance(a0) {
    if ((Array.isArray ? Array.isArray(a0) : Object.prototype.toString.call(a0) === '[object Array]') && a0.length === 4) {
        var r0 = a0[0];
        if (r0 === 'black') {
            var r1 = a0[1];
            if ((Array.isArray ? Array.isArray(r1) : Object.prototype.toString.call(r1) === '[object Array]') && r1.length === 4) {
                var r2 = r1[0];
                if (r2 === 'red') {
                    var r3 = r1[1];
                    if ((Array.isArray ? Array.isArray(r3) : Object.prototype.toString.call(r3) === '[object Array]') && r3.length === 4) {
                        var r4 = r3[0];
                        if (r4 === 'red') {
                            return 'balance-1';
                        }
                    }
                    var r5 = r3[3];
                    if ((Array.isArray ? Array.isArray(r5) : Object.prototype.toString.call(r5) === '[object Array]') && r5.length === 4) {
                        var r6 = r5[0];
                        if (r6 === 'red') {
                            return 'balance-2';
                        }
                    }
                }
            }
            var r7 = r1[3];
            if ((Array.isArray ? Array.isArray(r7) : Object.prototype.toString.call(r7) === '[object Array]') && r7.length === 4) {
                var r8 = r7[0];
                if (r8 === 'red') {
                    var r9 = r7[1];
                    if ((Array.isArray ? Array.isArray(r9) : Object.prototype.toString.call(r9) === '[object Array]') && r9.length === 4) {
                        var r10 = r9[0];
                        if (r10 === 'red') {
                            return 'balance-3';
                        }
                    }
                    var r11 = r9[3];
                    if ((Array.isArray ? Array.isArray(r11) : Object.prototype.toString.call(r11) === '[object Array]') && r11.length === 4) {
                        var r12 = r11[0];
                        if (r12 === 'red') {
                            return 'balance-4';
                        }
                    }
                }
            }
        }
    }
    return 'balanced';
}

03-sparkler-rbt-tag-closure-simple.js

function balance(a) {
  if ((Array.isArray ? Array.isArray(a) : "[object Array]" === Object.prototype.toString.call(a)) && 4 === a.length && "black" === a[0]) {
    a = a[1];
    if ((Array.isArray ? Array.isArray(a) : "[object Array]" === Object.prototype.toString.call(a)) && 4 === a.length && "red" === a[0]) {
      var b = a[1];
      if ((Array.isArray ? Array.isArray(b) : "[object Array]" === Object.prototype.toString.call(b)) && 4 === b.length && "red" === b[0]) {
        return "balance-1";
      }
      b = b[3];
      if ((Array.isArray ? Array.isArray(b) : "[object Array]" === Object.prototype.toString.call(b)) && 4 === b.length && "red" === b[0]) {
        return "balance-2";
      }
    }
    a = a[3];
    if ((Array.isArray ? Array.isArray(a) : "[object Array]" === Object.prototype.toString.call(a)) && 4 === a.length && "red" === a[0]) {
      a = a[1];
      if ((Array.isArray ? Array.isArray(a) : "[object Array]" === Object.prototype.toString.call(a)) && 4 === a.length && "red" === a[0]) {
        return "balance-3";
      }
      a = a[3];
      if ((Array.isArray ? Array.isArray(a) : "[object Array]" === Object.prototype.toString.call(a)) && 4 === a.length && "red" === a[0]) {
        return "balance-4";
      }
    }
  }
  return "balanced";
}