chore(deps): bump typescript to 4

Bumped `typescript` up to v4.x as well as a bunch of other dependencies,
including `jest` which had a moderate severity from it's `node-notifier`
dependency. Also added Node.js v15.x to the automated testing.
This commit is contained in:
Josh Sherman 2020-12-29 16:37:38 -06:00
parent b3bbab4e6b
commit 3eca80185c
5 changed files with 1370 additions and 1992 deletions

3310
package-lock.json generated

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