Incorrect import causes typescript compilation issue

[IARI]

Describe the bug

In https://github.com/Tonejs/Tone.js/blob/dev/Tone/core/type/Units.ts there is the import statement

import { Note } from "./NoteUnits";

This causes a TS compilation error
error TS1484: 'Note' is a type and must be imported using a type-only import when 'verbatimModuleSyntax' is enabled.

To Reproduce

Add tone.js as a dependency in a project with 'verbatimModuleSyntax' is enabled.