Errors on the console with TypeScript code fixes

[spahnke]

monaco-editor version: > 0.18.1 (not released yet)
Browser: Chrome/Edge
OS: Windows 10

Steps or JS usage snippet reproducing the issue:
microsoft/monaco-typescript#40 added support for code fixes which is not released yet. You can play around with that however in the TypeScript playground. Using the following code I get errors on the console when moving the cursor on either side of the last semicolon:

const test = 'foobar';
throw new Error(test);
test;

Playground link:
http://www.typescriptlang.org/play/index.html?ts=3.7-Beta#code/MYewdgzgLgBFCm0YF4YHIBmIQCMCGATmgNwBQUAFgSAO4xjx0CiB1BAFAtAJRldTEgA

/cc @orta

[alexdima]

I can reproduce also with the TS 3.7.3. I suggest to file an issue directly against https://github.com/microsoft/Typescript

cc @orta

[orta]

Confirmed, this feels like my bug yeah 👍

[orta]

Yeah, it's in the monaco-typescript implementation, the compiler didn't raise with

/// <reference path="fourslash.ts" />

//// const test = 'foobar';
//// throw new Error(test);
//// test;

verify.codeFixAll({
  fixId: "addMissingNewOperator",
  fixAllDescription: "Add missing 'new' operator to all calls",
  newFileContent:
`class C {
  constructor(num?: number) {}
}
var a = new C();
var b = new C(3);`
});