Should you mix naming conventions in one codebase?
No. Mixing camelCase and snake_case in the same codebase increases cognitive load and causes real bugs, such as mismatched keys between APIs and databases. Pick the convention native to your language, document it, and enforce it automatically with tools like ESLint or Prettier.
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Programming Naming Conventions Explained: camelCase, PascalCase, snake_case & MoreLearn the difference between camelCase, PascalCase, snake_case, kebab-case and UPPER_SNAKE_CASE — which languages use which, and how to name things cleanly.
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