registry.npmjs.org. Override it globally in bunfig.toml.
bunfig.toml
Your
bunfig.toml can reference environment variables. bun install automatically loads environment variables from .env.local, .env.production, and .env, regardless of NODE_ENV; it does not read .env.development or .env.test. See Environment variables.
bunfig.toml
See
bun install.