Exception when testing non-existent property of Uint32Array and bug with throw inside switch()

Some more suspicious things...

This behaves as expected:

process.on('uncaughtException',(err)=>{
  console.log('!!!UNCAUGHTEXCEPTION!!!',er­r);
});
const arr= new Uint32Array([1,2,3,4]);

console.log('-A1-');
if (!!arr.xyz) console.log('-A2-');
console.log('-A3-');

But this

process.on('uncaughtException',(err)=>{
  console.log('!!!UNCAUGHTEXCEPTION!!!',er­r);
});
const arr= new Uint32Array([1,2,3,4]);

console.log('-B1-');
try{
  if (!!arr.xyz) console.log('-B2-');
  console.log('-B3-');
}
catch(e){
  console.log('-B4-',e);
}
console.log('-B5-');

reports some strange error (see 2nd UNCAUGHTEXCEPTION message):

-B1-
!!!UNCAUGHTEXCEPTION!!! Error {
  "msg": "Field or method \"xyz\" does not already exist, and can't create it on Uint32Array",
  "type": "Error",
  "stack": " at line 2 col 12\n  if (!!arr.xyz) console.log('-B2-');\n           ^\n"
 }
!!!UNCAUGHTEXCEPTION!!! SyntaxError {
  "msg": "Got catch expected EOF",
  "type": "SyntaxError",
  "stack": " at line 1 col 1\ncatch(e){\n^\n"
 }
-B5-

Maybe another topic relates to this: i think that exceptions got lost without any notice when they occured inside a switch statement. i try to come up with some test code for this, too...