Put your cursor after the second brace and paste the string "a: a['']"
```
var a = a({
a: {
a: a[""]
```
You should get an exception:
```
Count must be positive and count must refer to a location within the string/array/collection.
Parameter name: count
```
```
var a = a({
a: {
a: a[""]
```
You should get an exception:
```
Count must be positive and count must refer to a location within the string/array/collection.
Parameter name: count
```