**TypeScript Version:**

1.8.10

Hi.

I still have the error code TS1127 when I try to compile a file.
I use the code from the quick tutorial.

**Code :**

```
 function greeter(person: string){
      return "Hello, " + person;
    }
    var user = [0, 1, 2];
    document.body.innerHTML = greeter(user);

```

**Expected behavior:**

```
_greeter.ts(7,26):_Supplied parameters do not match any signature of call target_

```

**Actual behavior:**

```
greeter.ts(1,1): error TS1127: Invalid character.
greeter.ts(1,2): error TS1127: Invalid character.
greeter.ts(1,3): error TS1127: Invalid character.
greeter.ts(1,4): error TS1127: Invalid character.

```