fix(deepEqual): prevent null return breaking nested Promise/function comparisons

[nev21]

Fixes issue from PR #273 where _deepEquals() returning null from _strictEquals for non-reference-equal Promises/functions/WeakMaps caused nested comparisons to fail incorrectly. Callers check (=== false), treating null as "equal".

Two bugs fixed:

1. Added _strictEqualsBool wrapper to convert null → false for types that should only be equal if reference-equal (Promise, function, symbol, WeakMap, WeakSet)
2. Fixed _getTypeComparer() objType lookup bug where undefined objType accessed _typeEquals["undefined"] returning wrong comparer instead of falling back to theType

Changes:

• core/src/assert/funcs/equal.ts:
  • Added _strictEqualsBool wrapper function
  • Updated _typeEquals map for promise/function/symbol/weakmap/weakset
  • Fixed _getTypeComparer to check (objType && _typeEquals[objType])
• core/test/src/assert/assert.equals.test.ts:
  • Added regression test for Promise/function in nested objects/arrays

[Copilot]

Pull request overview

Fixes deep equality behavior in @nevware21/tripwire where _deepEquals() could return null for certain non-deep-comparable types (e.g., Promise/function) during nested comparisons, which callers incorrectly treated as “equal”. Also corrects type-comparer selection when objType is undefined.

Changes:

• Added a _strictEqualsBool wrapper so Promise/function/symbol/WeakMap/WeakSet comparisons never return null (non-reference-equal → false).
• Fixed _getTypeComparer() to avoid accidentally selecting the "undefined" comparer when objType is not present.
• Added a regression test covering nested Promise/function comparisons in deepStrictEqual.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
core/src/assert/funcs/equal.ts	Ensures strict-only types yield boolean results and fixes comparer lookup fallback logic.
core/test/src/assert/assert.equals.test.ts	Adds regression coverage for nested Promise/function mismatches under deepStrictEqual.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.43%. Comparing base (119dd67) to head (e61ebe6).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #275   +/-   ##
=======================================
  Coverage   91.43%   91.43%           
=======================================
  Files          78       78           
  Lines        3443     3445    +2     
  Branches      886      886           
=======================================
+ Hits         3148     3150    +2     
  Misses        295      295           

Files with missing lines	Coverage Δ
core/src/assert/funcs/equal.ts	82.17% <100.00%> (+0.15%)	⬆️

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[nevware21-bot]

Approved by nevware21-bot