"TS2729 [ERROR]: Property 'boundary' used before its initialization" in extern library - deno

Question

After updating my deno version to 1.9 today I had started having the following problem when running my tests or my scripts:
TS2729 [ERROR]: Property 'boundary' is used before its initialization.
readonly dashBoundary = encoder.encode(`--${this.boundary}`);
~~~~~~~~
at https://deno.land/std#0.63.0/mime/multipart.ts:266:52
'boundary' is declared here.
constructor(reader: Deno.Reader, private boundary: string) {
~~~~~~~~~~~~~~~~~~~~~~~~
at https://deno.land/std#0.63.0/mime/multipart.ts:269:36
I checked and I am not using the mime repository anywhere in my code, instead some other repositories must use it.
I am using the following repositories:
x/abc
std/uuid
std/fs
std/path
std/fmt
std/testing
I made sure that I am explicitely using the newest version for all of the imports of the std library (std version 0.93.0).
When I am running the files that are importing the std library (instead of running the entire application) no errors occur.
Does anyone have an idea how to resolve the error?

Answer 1

It seems like the repository x/abc was the problem.
I did not add a version when importing it implicitly. When importing implicitly it in the following way it worked:
import abc from "https://deno.land/x/abc#v1.3.1/mod.ts";