# Functions
IsKeyword returns the keyword token if literal is a keyword, a KEYWORD token if the literal is a future keyword (const, let, class, super, ...), or 0 if the literal is not a keyword.
# Constants
+=.
&.
&=.
&^.
&^=.
=.
~.
:.
,.
--.
Fallback identifiers.
==.
^.
^=.
Miscellaneous.
>.
>=.
Control.
++.
Instance of.
{.
[.
(.
<.
<=.
&&.
||.
-.
*.
*=.
!.
!=.
|.
|=.
.
+.
?.
/=.
%.
%=.
Functions.
}.
].
).
;.
<<.
<<=.
>>.
>>=.
/.
===.
!==.
Types.
-=.
Advanced flow.
>>>.
>>>=.
Declarations.
Loops.
# Type aliases
Token is the set of lexical tokens in JavaScript (ECMA5).