nl_tokens: ES6 18 . 2 . 5 parseInt ( string radix )
pl_tokens: function GlobalParseInt ( string , radix ) { if ( IS_UNDEFINED ( radix ) || radix === 10 || radix === 0 ) { // Some people use parseInt instead of Math.floor.  This // optimization makes parseInt on a Smi 12 times faster (60ns // vs 800ns).  The following optimization makes parseInt on a // non-Smi number 9 times faster (230ns vs 2070ns).  Together // they make parseInt on a string 1.4% slower (274ns vs 270ns). if ( % _IsSmi ( string ) ) return string ; if ( IS_NUMBER ( string ) && ( ( 0.01 < string && string < 1e9 ) || ( - 1e9 < string && string < - 0.01 ) ) ) { // Truncate number. return string | 0 ; } string = TO_STRING ( string ) ; radix = radix | 0 ; } else { // The spec says ToString should be evaluated before ToInt32. string = TO_STRING ( string ) ; radix = TO_INT32 ( radix ) ; if ( ! ( radix == 0 || ( 2 <= radix && radix <= 36 ) ) ) { return NaN ; } } if ( % _HasCachedArrayIndex ( string ) && ( radix == 0 || radix == 10 ) ) { return % _GetCachedArrayIndex ( <mask> ) ; } return % StringParseInt ( string , radix ) ; }