supported_features.md

NOTE: This file is very outdated -- use at your own risk!

Supported Operations

✔️	supported
❔	unknown
‼️	should be supported, unimplemented
➖	will not be supported

Statements and Control Operators

if-true	if(true) { e1 } else { e2 }	✔️
	if(true) { e1 }	✔️
if-false	if(false) { e1 } else { e2 }	✔️
	if(false) { e1 }	✔️
while	while(e1) { e2 }	✔️
while-false	while(false) { e2 }	✔️
throw		➖
try-catch		➖
try-catch-pop		➖
uncaught-exception		❔
try-finally-error		➖
try-finally-break		➖
try-finally-pop		➖
label-break	l: { e; break l v; }	✔️
label-break-pop	l1: { e; break l2 v; }	✔️
label-pop	l: { v }	❔
break-break	break l1 (break l2 v)	❔

Objects

object literal	{x:1, y:2}	✔️
get field	{x:1}.x	✔️
	{x:1}["x"]	❔	TODO: merge this and ^
get field - not found	{x:1}.y -> undefined	❔
get field - proto null	{x:1, __proto__: null}.y -> undefined	‼️
get field - proto	{x:1, __proto__: l}.y -> (deref l).y	‼️
update field	{x:1}.x = 4	✔️
create field	{x:1}.y = 4	❔
delete field	delete {x.1}.x	‼️
delete field - not found	delete {x.1}.y	‼️

Arrays

Operators

Binary Operators

+	✔️	TODO: ensure it matches with implicit type conversions
-	✔️
/	✔️
%	‼️
*	✔️
**	‼️
&	➖
|	➖
>>	➖
>>>	➖
<<	➖
^	➖
==	➖
===	✔️
!=	➖
!==	✔️
in	‼️
instanceof	❔
>	✔️
<	✔️
>=	✔️
<=	✔️
++	‼️	NOTE: might get desugared with js-transform
--	‼️	NOTE: might get desugared with js-transform

Logical Operators

Unary Operators

Keywords

this	❔
instanceof	❔
typeof	❔	TODO: ensure all cases are implemented

Type Conversions

Assorted

Prototype-based Objects

❔

Functions as Objects

➖

Local Variables

var	✔️
let	✔️

Global Variables

❔

With Statements

➖