[v6.x backport] assert: refactor the code

[BridgeAR]

Ref #13862

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

assert

[BridgeAR]

@MylesBorins we have a linter error on v6.x-staging

diff --git a/test/parallel/test-fs-readfile-unlink.js b/test/parallel/test-fs-readfile-unlink.js index aa17324963..203ea681e5 100644 --- a/test/parallel/test-fs-readfile-unlink.js+++ b/test/parallel/test-fs-readfile-unlink.js@@ -3,7 +3,6 @@ const common = require('../common'); const assert = require('assert'); const fs = require('fs'); const path = require('path'); -const dirName = path.resolve(common.fixturesDir, 'test-readfile-unlink'); const fileName = path.resolve(common.tmpDir, 'test.bin'); const buf = Buffer.alloc(512 * 1024, 42);

I am not sure how we should fix that. Should I just open a new PR against the branch?

[MylesBorins]

@BridgeAR I fixed this in the staging branch. give it another rebase 😄

[BridgeAR]

@MylesBorins rebased

[MylesBorins]

landed in 55a2bd2...a8b34d8