errors: use lazy assert to avoid issues on startup

Use of assert must be lazy to allow errors to be used early
before the process is completely set up

PR-URL: https://github.com/nodejs/node/pull/11300
Ref: https://github.com/nodejs/node/issues/11273


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>