Struct Bun 

pub struct Bun;

Bun package manager adapter.

Trait Implementations

impl PackageManager for Bun

fn name(&self) -> &'static str

Returns the name of the package manager.

fn detect(&self, project_dir: &Path) -> bool

Detects if the project uses bun by checking for bun.lockb or bun.lock.

fn bloat_dirs(&self, project_dir: &Path) -> Vec<BloatDir>

Returns the bloat directories for bun (node_modules).

bun hardlinks packages out of ~/.bun/install/cache on Linux and Windows, so deleting node_modules does not free those bytes — the cache keeps them. On macOS bun uses clonefile instead, which leaves the link count at 1 and is invisible to this measurement; APFS clones genuinely are freed block-by-block as the cache copy diverges, so counting them as freed is the honest reading.

fn enforce_lockfile( &self, project_dir: &Path, policy: EnforcePolicy, ) -> Result<()>

Verifies the lockfile resolves cleanly, without installing anything.

--dry-run is essential, not cosmetic. A plain bun install --frozen-lockfile is a real install: it downloads every dependency and runs their lifecycle scripts — third-party code executed as a precondition for deleting the very tree it just built. With --dry-run, bun still resolves package.json against the lockfile and fails when they disagree, but writes nothing.

bun is the one manager whose natural check was already read-only, so there is no writing form to opt into and allow_rewrite changes nothing here.

fn restore(&self, project_dir: &Path, timeout: Duration) -> Result<()>

Restores the dependencies using the lockfile.

fn lockfiles(&self) -> &'static [&'static str]

The file this manager rebuilds its bloat directory from.

fn restore_named( &self, project_path: &Path, dir_name: &str, runtime: Option<&str>, timeout: Duration, ) -> Result<()>

PackageManager::restore, told the name the pruned directory had.

fn runtime_tag(&self, project_path: &Path, dir_name: &str) -> Option<String>

The language runtime a bloat directory is built against, recorded at prune time.

fn drift(&self, project_path: &Path) -> Vec<DriftReport>

Installed-but-unrecorded packages, as data instead of a refusal.

fn opt_in(&self) -> bool

Whether this adapter is inert until the user enables it in settings.