TSError when building block editor tools

[joemcgill]

Since #13 was merged, trying to build the package returns the following TypeScript error:

../../node_modules/@types/node/globals.d.ts(72,13): error TS2403: Subsequent variable declarations must have the same type.  Variable 'AbortSignal' must be of type '{ new (): AbortSignal; prototype: AbortSignal; abort(reason?: any): AbortSignal; timeout(milliseconds: number): AbortSignal; }', but here has type '{ new (): AbortSignal; prototype: AbortSignal; }'.