Deleting existing package.json when --no-pack is passed #1521
Description
🐛 Bug description
When passing --no-pack to wasm-pack, if an existing package.json is present in the out-dir, it will get deleted
🤔 Expected Behavior
The existing package.json should be left alone, a new one should just not be generated.
👟 Steps to reproduce
Place package.json in /pkg
Run wasm-pack build --no-pack
🌍 Your environment
Include the relevant details of your environment.
wasm-pack version: 0.13.1
rustc version: 1.91.0-nightly (3672a55b7 2025-08-13)