A developer is configuring Claude Code for a project that uses both JavaScript and Rust. The JavaScript code…

Question

A developer is configuring Claude Code for a project that uses both JavaScript and Rust. The JavaScript code follows Prettier formatting while Rust follows rustfmt conventions. How should CLAUDE.md handle this dual-language setup?

Accepted Answer

C. Use .claude/rules/ with glob-based rules: one file with **/*.js,**/*.ts pattern for Prettier rules, and another with **/*.rs pattern for rustfmt rules

Answer

A. Include both formatting conventions in the root CLAUDE.md with clear section headers

Answer

B. Create separate CLAUDE.md files in the js/ and rust/ directories

Answer

D. Rely on the language-specific formatters and don't include formatting rules in CLAUDE.md

Question 264