Expose `createErrDiff` for diffing objects

[JMTK]

What is the problem this feature will solve?

I like the general format of the deepStrictEqual diff comparisons, but it would be nice to get this functionality "natively" to print a diff instead of forcing it to error to see a diff.

What is the feature you are proposing to solve the problem?

Expose createErrDiff from assert

node/lib/internal/assert/assertion_error.js

Line 79 in 544cfc5

function createErrDiff(actual, expected, operator) {

What alternatives have you considered?

Userland diff tool, but if the code is already there it would be nice to expose it

[BridgeAR]

The current implementation is not ideal. I would not expose that for now. It is just a best effort implementation and not e.g., Myers .

[avivkeller]

Just a little update here: #54862 will switch the alg to Myers

[github-actions]

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