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Source: [Hacker News](https://gemini.google.com/app/3952a805cd6ad7a3)
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2 points, 0 comments on Hacker News
1 points, 0 comments on Hacker News
Extract one mutator only after tests pin object identity. Value equality alone hides alias bugs in shared containers. A copied list can match every item and still break a later caller.
No Python. No Node. Just Bash and jq.