Intellisense does not work for properties that are added after declaration

[saravanaj]

• VSCode Version: 1.8.1
• OS Version: Windows 8.1 Home

I am running code with --disable-extensions flag.

Steps to Reproduce:

1. Write some code where properties are added to objects added after declaration. Intellisense does not work:
   

2. If the properties are defined during declaration it works:
   

[Spown]

I think it is a proper behavior. If you had something like this:

var obj = {};
if (someGlobalVariable===true) {
  obj.test = {
    one: 1
  }
} else if (someGlobalVariable===false) {
  obj.test = "I'm a string now!"
}

obj

then Intellisense wouldn't really know whether the obj variable always has this test property and what type it is. Intellisense doesn't evaluate your code - it only makes assumptions where it can. Thats why you still have word suggestions:

as a compromise.

[saravanaj]

@Spown I agree it is impossible to autocomplete properties that are added conditionally, but the example I posted does not add any properties conditionally. The same code gives intellisense in Visual Studio.

The major use case where this type of intellisense is needed is when I namespace methods and properties like below:

In VS Code:

In Visual Studio: (which handles this perfectly)

[mjbvz]

This issue was moved to microsoft/TypeScript#13271