[Pas2js] Prefix_&_support

[warleyalex]

Let's say in your application, move your cursor beyond the . (period
character) 
after the TJSUint8Array statement, and press Ctrl+Space. The Code Completion
window appears.
Locate the "of" method. Uh... there's an ugly "_of" undercore method, hit
ENTER your code will 
be completed to:

-------------------------
var
  compressed_UInt8Array: TJSUint8Array;
begin
  compressed_UInt8Array := TJSUint8Array._of(1,2,3);


---------------------------
Now, try putting the "&" prefix rather than "_" prefix to all indentifiers
declared in the JS.pas unit, 
e.g. 
  TJSUint8Array  = class external name 'Uint8Array' (TJSTypedArray)
  private
    {...}
  public
    {...}
    class function &of(aValue : jsValue) : TJSUInt8Array; varargs;external
name 'of';
  end;

  TJSPromise = class external name 'Promise'
    {...}
    function &then (onAccepted : TJSPromiseResolver) : TJSPromise; external
name 'then';
    function catch (onRejected : TJSPromiseResolver) : TJSPromise;
    function &finally(value : TJSPromiseFinallyHandler): TJSPromise;
  end;


The consequence is that you should see the "correct identifier" when the
code completion 
apperars, when you hit ENTER, you've got the code completed with the ugly
"&of" method.


Pas2JS compiler, could do some black magic, at compile-time evaluations, to
support for
the ‘&’ escape prefix to allow using reserved words as identifiers. 

I think it's a good practice to prefix all Pascal identifies with an &
prefix, 
usually declared in external classes, so the pas2js compiler can correctly
compile the code,
it won't get name conflict, just because have already evaluated the
identifier, for instance in:

  compressed_UInt8Array := TJSUint8Array.of(1,2,3);

  or 

  defer
    .then(@_doTask1)
    .then(@_doTask2)
    .then(@_doTask3);



--
Sent from: http://pas2js.38893.n8.nabble.com/