Error 'Unexpected Token' not displayed

[JustifiedFlaw]

• VSCode Version: 0.10.11
• OS Version: OS X 10.10.5

Steps to Reproduce:

1. Create a javascript file
2. Type in
   var a = "abc".replace(new RegExp("abc", "g"), );

Expected: A warning that something should be between the comma and parentheses at the end

[Reanmachine]

I may be wrong, but I think this is actually a bug with TypeScript. I saved your example into both a .js and a .ts file and ran the following:

As you can see both node and tsc (typescript) generate expected errors, but when typescript is parsing it as javascript it ignores the error. The output of tsc is as follows:

var a = "abc".replace(new RegExp("abc", "g"));

Since VSCode's diagnostics for JS are based on the TypeScript Server I feel that the EcmaScript5 mode of TypeScript doesn't see this as a problem because it just compiles the trailing parameter away.

There's an open Issue in the typescript project for TS to support trailing parameter lists Microsoft/TypeScript#7279

[Tyriar]

Thanks for deduping this @Reanmachine 👍