Running test command automatically calls pretest.

Running test from the root dir calls the pretest set up in the root dir, defined to call the extension pretest.

Consequently, the extension pretest is called twice, triggered once by the root dir pretest and once by running the extension test command. Since the pretest triggers the build, the build happens twice.

We could modify the pretest definition in the root dir package.json, not having it call pretest explicitly?