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• Reopening this close issue: ResizeObserver API declarations missing #28502

Suggestion

• lib.dom.ts does not include ResizeObserver API declarations.
• ResizeObserver is already supported by all modern browser, typescript should provide the typs

Examples

https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver

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.