es2022 support

[aladdin-add]

• * Class Fields (Private instance methods and accessors, Class Public Instance Fields & Private Instance Fields, Static class fields and private static methods)
• * RegExp Match Indices
• * Top-level await
• * Ergonomic brand checks for Private Fields
• * Class Static Block
• * Arbitrary module namespace identifier names[https://github.com/Normative: Arbitrary module namespace identifier names tc39/ecma262#2154]

[aladdin-add]

TLA has been supported,
class fields is still in next => need be enabled by default.

[julianjensen]

I see that top-level await has been checked above. Not sure if it's still in the works or not but, just in case, I thought I'd post this here to make sure that this is an upcoming feature and not a bug. Currently, for await when used as a top-level await is failing on version 4.2.1.

import { parse } from 'meriyah';

const parseExample = ( name, source ) => {
    try
    {
        parse( source, { module: true, next: true });
        console.log( `PASS: ${name}` );
    }
    catch
    {
        console.warn( `FAIL: ${name}` );
    }
};

parseExample( `async function with 'for await'`, `async function x() { for await ( const a of b ) console.log( 'Works!' ); }` );
parseExample( `top-level 'await'`, `await topLevelAwaitFunction( 'Works' );` );
parseExample( `top-level 'for await'`, `for await ( const a of b ) console.log( 'Also breaks' );` );

The above outputs:

PASS: async function with 'for await'
PASS: top-level 'await'
FAIL: top-level 'for await'