I moved over to using nedb-promises over plain nedb due to their Typescript types having issues. So far, it's been working great. The only thing I've noticed is that calling

database.persistance.compactDatafile()

will print a warning to the console with the following message:

(node:13872) DeprecationWarning: @seald-io/nedb: calling Datastore#persistence#compactDatafile is deprecated, please use Datastore#compactDatafile, it will be removed in the next major version.

This is due to @seald/nedb having marked calls going via .persistence as deprecated. Instead, they want us to call the functions straight on the database object. Like this:

database.compactDatafile()

The nedb-promises types file currently does not expose these functions. But there is a work-around in the mean time, to cast the object to any before making the call. So the method is there, it just isn't exposed.

(database as any).compactDatafile();