Add const of precedence order in lua
+const PREC = {
+ COMMA: -1,
+ PRIORITY: 1,
+
+ OR: 1, //=> or
+ AND: 2, //=> and
+ COMPARE: 3, //=> < <= == ~= >= >
+ BIT_OR: 4, //=> |
+ BIT_NOT: 5, //=> ~
+ BIT_AND: 6, //=> &
+ SHIFT: 7, //=> << >>
+ CONCAT: 8, //=> ..
+ PLUS: 9, //=> + -
+ MULTI: 10, //=> * / // %
+ UNARY: 11, //=> not # - ~
+ POWER: 12 //=> ^
+};
+
module.exports = grammar({
name: 'lua',
