add VisualViewport type definitions

[salzhrani]

Search Terms

visualViewport

Suggestion

add visualViewport type definition to lib.dom

Use Cases

it is a web API available in most browsers,

Examples

Checklist

My suggestion meets these guidelines:

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This could be implemented without emitting different JS based on the types of the expressions
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
• This feature would agree with the rest of TypeScript's Design Goals.

[salzhrani]

Woot!