getSelection may return null but type definition does not reflect this

[trrk]

I noticed that getSelection can return null in the implementation, but the type definition in index.d.ts does not reflect this possibility.

Source code (shows possible null return):

ce/src/utils/selection.js

Line 672 in 7668cf0

return null;

Type definition (does not include null in its type):

ce/dist/index.d.ts

Line 1720 in 7668cf0

getSelection: () => [number, number, number, number];

The type definition should be updated to indicate that getSelection may return null. For example:

getSelection: () => [number, number, number, number] | null;