With async/await it should be very rare that you have to explicitly create a promise. If the function returns a promise then you probably can just declare the function async and then it will always return a promise. just `return` what you want to resolve or throw what you want to reject.

Here are a few:
https://github.com/mongodb-js/vscode/blob/no-floating-promises/src/explorer/databaseTreeItem.ts#L62-L78

https://github.com/mongodb-js/vscode/blob/no-floating-promises/src/explorer/databaseTreeItem.ts#L194-L242

https://github.com/mongodb-js/vscode/blob/no-floating-promises/src/explorer/collectionTreeItem.ts#L313-L333

https://github.com/mongodb-js/vscode/blob/no-floating-promises/src/explorer/collectionTreeItem.ts#L356-L404

https://github.com/mongodb-js/vscode/blob/no-floating-promises/src/explorer/documentListTreeItem.ts#L147-L171

https://github.com/mongodb-js/vscode/blob/no-floating-promises/src/explorer/indexListTreeItem.ts#L73-L93

and others. There are about a dozen across the codebase. Just search for `return new Promise`.