KFlash

export function parseSource(source: string, options: Options | void, context: Context): ESTree.Program {
  if (options != null) {
    if (options.module) context |= Context.Module | Context.Strict;
    if (options.next) context |= Context.OptionsNext;
    if (options.loc) context |= Context.OptionsLoc;
    if (options.disableWebCompat) context |= Context.OptionsDisableWebCompat;
    if (options.directives) context |= Context.OptionsDirectives | Context.OptionsRaw;
    if (options.raw) context |= Context.OptionsRaw;
    if (options.impliedStrict) context |= Context.Strict;
  }

KFlash

// Bad practice

1)  function x() { while (i < length) { let x = i; ... }  }

2) while (i < length) { x.y.z[i] = 'hello'; } 



// God practice

KFlash

(a, [b], {c})
--------------


{
    "type": "Script",
    "directives": [],
    "items": [
        {
            "type": "ExpressionStatement",

KFlash

let a = b;
==========

{
    "type": "Script",
    "directives": [],
    "items": [
        {
            "type": "LexicalDeclaration",
            "kind": "let",