install: migrate workspace packages from yarn.lock by robobun · Pull Request #38878 · oven-sh/bun

robobun · 2026-08-15T05:07:32Z

Problem

Migrating a yarn v1 yarn.lock in a workspaces monorepo prints migrated lockfile from yarn.lock and exits 0, but the workspace packages' dependencies are not taken from yarn.lock: a workspace declaring ms@^2.0.0 that yarn.lock resolved to 2.1.1 ends up with 2.1.3 (registry latest), or with 2.0.0 when another ms@2.0.0 entry exists. Root dependencies and non-workspace projects migrate exactly. Same in 1.3.14 (fuzz ledger entry, not a regression).
Cause: migrate_yarn_lockfile (src/install/yarn.rs) only created the root package and the lock entries; it never created the workspace packages, so bun install resolved their dependencies itself:
- root without dependencies of its own: the migrated root had 0 dependencies, so install_with_manager.rs:152 treated the lockfile as empty and resolved everything from the registry;
- otherwise the differ added the workspaces and resolved their dependencies against the migrated lockfile by name + satisfies, and the migration had indexed only one version per name under the real name (the other versions under synthetic parent/name and name@version hashes, yarn.rs former lines 1383-1578), so ^2.0.0 bound to whatever single entry was indexed.
Also fixed on the way: a root dependency missing from yarn.lock (package.json edited after the last yarn install) was written with no resolution, so bun install failed with <name>@<range> failed to resolve and bun pm migrate wrote a bun.lock that did not load.

Fix

The migration parses the root and every workspace package.json with Package::parse_with_json (Features::main() / Features::WORKSPACE), the same parse bun install uses, and appends them as packages 0..n, then the lock entries. Each dependency they declare is bound to the yarn.lock entry keyed by the exact name@range written in package.json (Binder::bind), which is how yarn itself resolves it; another entry of the same name that happens to satisfy the range is never used.
- workspace: links and ranges satisfied by a workspace (which parse_with_json already turns into workspace edges) bind to the workspace package.
- Peers: yarn v1 never installs or locks the root's and workspaces' peerDependencies, so required peers are bound by version the way loading a bun.lock binds them: the scan behind resolve_peer_dep_version_based is split out as resolve_peer_dep_by_range (plus peer_candidate_name_hash), and the migration runs it for * ranges and for names that have an overrides/resolutions rule as well, since yarn applied those rules to the entries the candidates come from (the loader exempts both because it can fall back to the printed tree; the migration has none, and a dropped peer would make the workspace differ from its package.json). Optional peers keep an unresolved edge for the hoister, as in a fresh resolve. Without this every workspace with a peer would differ from its package.json and be re-resolved wholesale by bun install.
- A dependency with nothing to bind to is dropped from the migrated package, so bun install adds and resolves it like any dependency added after the lockfile was written.
Every lock entry is registered in package_index under its real name (get_or_put_id), like every other lockfile; the synthetic names are gone. bun install after a partially stale yarn.lock therefore sees all locked versions of a name when it re-resolves.
Because the root now comes from parse_with_json, the hand-written root dependency parsing and parse_root_overrides are gone, and overrides/resolutions, catalogs, trustedDependencies and patchedDependencies are recorded the way a fresh install records them. The first dependency pass (whose buffers the second pass overwrote), process_deps, find_entry_by_spec, and the package_dependents / usage_count / scoped-name bookkeeping (written, never read) are deleted; the lock entry resolution code and the entry dependency pass are unchanged. Migrating the yarn CLI's own lockfile (yarn-cli-repo fixture) takes 3.4-4.0s instead of 5.3-6.6s in a debug build here.
Output differences for existing projects: root/workspace dependencies in the migrated bun.lock are in the order a fresh install writes them (grouped, name-sorted) instead of package.json order, hence the two reordered snapshots; the yarn-cli-repo, yarn-stuff and other fixture snapshots are byte-identical.
Verified: test/cli/install/migration/yarn-lock-migration.test.ts: the existing workspace test now asserts the workspace packages (it carried a TODO), plus bun pm migrate tests for the three reported shapes (root without dependencies + multi-range key, two entries of one name, links/peers/missing dependencies; the peers case covers several candidates, none satisfying, and a root resolutions rule on the peer's name) and a Verdaccio bun install test checking the installed versions, the stale root dependency, and that a second install leaves bun.lock and node_modules unchanged. All 4 new tests and the updated one fail on the current build; the file passes with the fix. The fixture cases in the same file (yarn-cli-repo etc.) now await the process and get a longer timeout in debug builds, where yarn's own 8k-line lockfile takes 4-5s to migrate (same problem test(install): fix yarn-lock-migration yarn-cli-repo case under debug+ASAN #35377 addresses). test/cli/install/migration/ (except the git-clone test, which needs the network here), test/cli/install/bun-lock.test.ts, hoist.test.ts and the peer tests in isolated-install.test.ts pass. Also checked by hand that bun install --frozen-lockfile straight from such a yarn.lock passes and installs the locked versions.
Related open PRs touching the same code: install: make yarn.lock migration linear in lock size #37244 and install: yarn migration fills dep buffers via push, not uninit slices #37539 rework the code this deletes; install: bind peer edges in the hoister, the way loading bun.lock binds them #38767 rebinds peers with the same scan after the npm migration and skips the yarn migration because of the index shape this PR fixes; install: record package.json trustedDependencies when migrating a lockfile #38773 records trustedDependencies after migration, which parse_with_json now also does for yarn. Whichever lands first, the others need a rebase.

Background

A yarn v1 lockfile has one entry per name@range that some package.json declared (several ranges resolving to the same version share one entry), and no entries for the root or the workspace packages themselves: their dependencies are found by looking up the exact declared name@range. Workspace-to-workspace dependencies whose version satisfies the range are linked and not recorded at all.
Bun's lockfile stores packages in a table; buffers.dependencies / buffers.resolutions hold, per package, the dependencies it declares and the package id each one resolved to. package_index maps a package name hash to the ids of every version of that name; resolution (get_package_id) and peer binding scan it, so a version missing from it is invisible to them.
Package::parse_with_json builds a package's rows from a package.json; with Features::main() it also walks workspaces and fills workspace_paths / workspace_versions, which is what lets workspace members' workspace: ranges resolve, so the root is parsed first. It is what bun install runs, and what the differ (Package::Diff) compares the loaded lockfile against; producing the same rows here is what makes the post-migration install a no-op instead of a re-resolve.
resolve_peer_dep_version_based (bun.lock.rs) is how loading a bun.lock binds a required peer: the highest version of that name in the lockfile that satisfies the range, mirroring the resolver's deferred peer phase. Optional peers are bound later by the hoister (Tree.rs), which skips any other unresolved dependency.

The yarn.lock migration only created the root package and the lock entries. In a workspaces monorepo the workspace packages were missing from the migrated lockfile, so bun install resolved their dependencies itself: from scratch when the root had no dependencies of its own (the lockfile looked empty), otherwise against whichever single entry per name the migration had put in the package index. Either way the installed versions could differ from what yarn.lock recorded, and nothing reported it. The migration now parses the root and every workspace package.json with Package::parse_with_json, the same parse bun install uses, and binds each declared dependency to the yarn.lock entry keyed by the exact name@range it declares, which is how yarn resolves them. Workspace links bind to the workspace packages, non-optional peers are bound the way loading a bun.lock binds them (yarn never locked them), optional peers are left to the hoister, and dependencies yarn.lock has no entry for are dropped so bun install resolves them instead of failing on an unresolved dependency (a root dependency missing from yarn.lock used to fail the install). Every lock entry is indexed under its real name, as in every other lockfile. This replaces the root package.json handling that the migration kept by hand (dependencies, overrides), and removes the first dependency pass, whose output the second pass overwrote, along with the dependents, usage and synthetic index name bookkeeping that nothing read. Migrating the yarn CLI's own lockfile takes about 40% less time in a debug build. resolve_peer_dep_version_based's scan is split out as resolve_peer_dep_by_range so the migration can apply it to * ranges as well, which the bun.lock loader resolves through the printed tree.

coderabbitai · 2026-08-15T05:07:40Z

Walkthrough

Changes

Yarn lockfile migration

Layer / File(s)	Summary
Reusable peer range resolution `src/install/lockfile/bun.lock.rs`	Adds `resolve_peer_dep_by_range` and delegates version-based peer candidate lookup to it.
Cached package loading and dependency rebinding `src/install/yarn.rs`, `src/install/migration.rs`	Loads root and workspace metadata from the package JSON cache, creates lockfile packages, indexes versions, and rebinds workspace, peer, optional-peer, and exact package dependencies.
Workspace migration and installation validation `test/cli/install/migration/yarn-lock-migration.test.ts`	Adds coverage for workspace mappings, peer metadata, missing lock entries, registry installation, selected versions, generated packages, and repeated installation.

Possibly related PRs

oven-sh/bun#30855: Related peer-dependency resolution changes in bun.lock.rs.
oven-sh/bun#37713: Refactors peer dependency range resolution in bun.lock.rs.
oven-sh/bun#38767: Modifies peer dependency version resolution and binding.

Suggested reviewers: jarred-sumner

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the main change: migrating workspace packages from yarn.lock.
Description check	✅ Passed	The description explains the problem, fix, background, affected behavior, and verification results in sufficient detail.

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robobun · 2026-08-15T05:07:45Z

^{Updated 4:58 AM PT - Aug 15th, 2026}

✅ @robobun, your commit 85013139baa42216a997fb0fd35f4e361bb5fa21 passed in Build #97527! 🎉

🧪 To try this PR locally:

bunx bun-pr 38878

That installs a local version of the PR into your bun-38878 executable, so you can run:

bun-38878 --bun

robobun · 2026-08-15T05:08:09Z

Status: reproduced both reported shapes against a local registry on the current build (bun install in a two-workspace monorepo with a yarn.lock pinning no-deps@^1.0.0 to 1.0.0 installs 1.1.0 when the root has no dependencies, and binds to the unrelated no-deps@1.0.1 entry when it does). With this branch both install the yarn.lock versions, bun install --frozen-lockfile straight from the yarn.lock passes, and the following install is a no-op. The new tests in test/cli/install/migration/yarn-lock-migration.test.ts fail without the src/ changes and pass with them. Waiting on CI.

github-actions · 2026-08-15T05:19:35Z

This PR may be a duplicate of:

fix(install): avoid typed yarn dependency slices over spare capacity #31204 - Deletes exactly the same migrate_yarn_lockfile code (the uninit slice_mut dep-buffer pass, process_deps, find_entry_by_spec, the root-dep loop and trailing set_len) with the same rationale.
install: yarn migration fills dep buffers via push, not uninit slices #37539 - Rewrites process_deps to push into buffers.dependencies/resolutions instead of the unsafe uninit slice + set_len layout, a mutually exclusive fix to the same code this PR removes.
install: make yarn.lock migration linear in lock size #37244 - Reworks the same spec-lookup path in migrate_yarn_lockfile: drops package_dependents/usage_count and find_entry_by_spec for a spec-to-entry hash map, and claims the same yarn-cli-repo migration speedup.

🤖 Generated with Claude Code

robobun · 2026-08-15T05:22:37Z

Not duplicates, but they do overlap mechanically, so noting how:

fix(install): avoid typed yarn dependency slices over spare capacity #31204 and install: yarn migration fills dep buffers via push, not uninit slices #37539 both deal with the first dependency pass (the &mut [Dependency] over uninitialized spare capacity + set_len): fix(install): avoid typed yarn dependency slices over spare capacity #31204 deletes it, install: yarn migration fills dep buffers via push, not uninit slices #37539 rewrites it to push. That pass's output was overwritten by the second pass, and this PR deletes it too (nothing it deleted remains here), so landing this makes both of them moot; neither touches the workspace packages, root parsing, peers or the package index, which is what this PR is about.
install: make yarn.lock migration linear in lock size #37244 is about the quadratic scans. This PR removes find_entry_by_spec, package_dependents, usage_count and the scoped-name loops as a side effect of the restructuring, but does not touch consolidate_and_append_entry, which install: make yarn.lock migration linear in lock size #37244 also fixes; that part of it still stands and would need a rebase on top of this.

The bug fixed here (workspace packages missing from the migrated lockfile, so their dependencies are re-resolved and drift from yarn.lock) is not addressed by any of the three.

coderabbitai

Actionable comments posted: 4

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Inline comments:
In `@src/install/migration.rs`:
- Line 79: Update the migration flow around migrate_yarn_lockfile to pass the
requested project directory dir through to the Yarn migrator, and adjust its
implementation to read manifests relative to that directory instead of
AutoAbsPath::init_top_level_dir(). Preserve the existing migration result
handling while ensuring js_parse_lockfile operates on the same project
directory.

In `@src/install/yarn.rs`:
- Around line 488-504: Update read_package_json to handle GetJsonResult::ReadErr
separately from ParseErr: preserve the underlying read error and include
abs_package_json_path in the returned error so missing or unreadable package
files identify the failed resource and retain syscall details. Keep parse
failures returning InvalidPackageJSON with their existing log diagnostics.

In `@test/cli/install/migration/yarn-lock-migration.test.ts`:
- Around line 1915-1918: Strengthen the idempotence test around the second
install by capturing the first install’s lockfile content (and existing
node_modules listing if applicable) before calling install again, then compare
those results with the corresponding post-second-install state. Keep the stderr
assertion, but ensure the test directly verifies that the second install leaves
the lockfile unchanged.
- Around line 1729-1764: Add peerDependencies with is-number constrained to
6.0.0 in packages/b within the fixture for “a range binds to its own yarn.lock
entry…”, then update the expected resolved package assertions to verify that
this peer binds to the 6.0.0 entry rather than the first candidate.

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Create a new PR with the fixes

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📥 Commits

Reviewing files that changed from the base of the PR and between 3542216 and 8cb4224.

⛔ Files ignored due to path filters (1)

test/cli/install/migration/__snapshots__/yarn-lock-migration.test.ts.snap is excluded by !**/*.snap

📒 Files selected for processing (4)

src/install/lockfile/bun.lock.rs
src/install/migration.rs
src/install/yarn.rs
test/cli/install/migration/yarn-lock-migration.test.ts

Report the path and error when a package.json cannot be read during the migration, cover peers with several candidates and with none that satisfies in the migration tests, compare the lockfile and node_modules across the two installs, and cut the binding comments down to one line each.

The fixture cases asserted the exit code through un-awaited `.resolves` expectations and read bun.lock without waiting for the process. The yarn-cli-repo fixture (yarn's own 8k-line lockfile) takes several seconds to migrate in a debug build, close to the default timeout, so that block gets a longer timeout in debug builds.

The override check in the peer scan exists so that loading a bun.lock falls back to the printed tree for overridden peers. The migration has no tree to fall back on, so a workspace peer whose name had any overrides/resolutions rule was dropped and the workspace no longer matched its package.json. The check now stays in the loader's entry point; the migration runs the scan directly, since yarn applied the resolutions to the entries the candidates come from.

claude

I reviewed this revision and didn't find any bugs; the three findings from earlier passes (dead VersionInfo.yarn_idx, the ReadErr diagnostic, and the overridden-peer drop) are all addressed. Given the scope — a rewrite of the yarn migration's root/workspace handling plus a refactor of resolve_peer_dep_version_based, and the stated overlap with #37244/#37539/#38767/#38773 — a human look is still warranted.

What was reviewed:

bind_importer_dependencies buffer swap: verified only importer packages own rows before it runs, so mem::take + rebuild is sound.
Binder::bind peer path after the 8501313 split: overridden peers now scan package_index directly instead of returning None.
get_or_put_id under real name for every lock entry vs. the deleted synthetic-name index; next_package_id starting at importer_count and the debug_assert_eq!(packages.len(), package_id) invariant.
The two reordered snapshots are dependency-group sort order only; the fixture snapshots (yarn-cli-repo etc.) are unchanged.

Extended reasoning...

Overview

This PR rewrites how migrate_yarn_lockfile builds the root and workspace packages: instead of hand-parsing the root package.json's dependency groups and never creating workspace packages at all, it calls Package::parse_with_json for the root (Features::main()) and each workspace (Features::WORKSPACE), then binds their declared dependencies to yarn.lock entries via a new Binder and bind_importer_dependencies. Every lock entry is now indexed under its real name via get_or_put_id, and ~550 lines of synthetic-name / package_dependents / usage_count bookkeeping are deleted. bun.lock.rs splits resolve_peer_dep_version_based into peer_candidate_name_hash + resolve_peer_dep_by_range so the migration can bind peers without the loader's override guard. migration.rs drops the unused dir argument. Tests add three bun pm migrate cases, one Verdaccio bun install case with an idempotence check, and tighten the existing workspace test and fixture harness.

Security risks

None identified. The migration reads local package.json files and a local yarn.lock; no network input is parsed, no path traversal from untrusted strings is introduced (workspace paths come from parse_with_json's existing glob walk, same as bun install). The deleted code included several unsafe raw-pointer buffer writes; the replacement uses safe Vec::push.

Level of scrutiny

High. This is a net -500-line rewrite of a core package-manager path (lockfile migration feeds directly into bun install's resolution and hoisting), it changes what package_index contains for every migrated yarn project, and it refactors a shared helper (resolve_peer_dep_version_based) that the bun.lock loader also uses. The PR description names four open PRs that rework the same code and will need rebasing whichever lands first — a human should sequence those. The peer-binding design choice (scan package_index for required peers, drop the row when nothing binds, keep INVALID_PACKAGE_ID for optional peers) is a judgment call that mirrors the bun.lock loader but differs from it on the override guard; I flagged one bug there in the previous pass and it was fixed, but the design itself deserves a maintainer's eye.

Other factors

All CodeRabbit and prior claude findings are marked resolved with follow-up commits (24bc1d3, 0de5737, 8cb4224, 8501313). Test coverage is thorough for the reported shapes and the fixture snapshots are byte-identical, which is good evidence the non-workspace path is unchanged. The bun.lock.rs refactor is a pure extraction — resolve_peer_dep_version_based still runs the override/* guards before delegating to the new scan, so the loader's behavior is preserved.

### What does this PR do? It consolidates 597 open package manager pull requests into one reviewed change for Bun 1.5. Each was ported, taken in part, or left out with a reason. This is the complete change log: `X -> Y` = symptom on main -> behaviour now; a line without `->` names a symptom that is gone; dep = dependency. | absorbed | in part | not taken | obsolete | total | issues closed | |---|---|---|---|---|---| | 464 | 40 | 74 | 19 | 597 | 133 | 699 files, +150,684 / -85,553 (src 221 files +41,383 / -46,459, net -5,076). #### Behaviour changes someone will notice 1. Unknown long flags are errors in every package manager command and bunx (main: `bun install --network-timeout 100000` adds the package `100000`). Drop the flag; bunx: tool flags go after the tool's name. In `BUN_OPTIONS` they are skipped. 2. `bun ci`/`--frozen-lockfile` fail (`note: dependencies in package.json changed since bun.lock was saved`) when a dep of the root or a workspace was added, removed, re-grouped or re-ranged. Equivalent spellings, `file:` directory rows (warning), `trustedDependencies`/`patchedDependencies` edits pass. Run `bun install`, commit (#41931; refs #22689). 3. `file:` folders are hard-linked real files (hoisted: was a symlink per file, their deps did not resolve). The folder's own `node_modules` is not taken, except `bundleDependencies`. Linked, and trusted scripts run, once, not on every install. Declare or bundle what the folder needs; `link:` / a workspace for a live link; `--force` reruns scripts (#40628, #37127; fixes #13379). 4. Hoisted: what the previous `bun.lock` placed and the new one does not leaves `node_modules`, with what only it needed and its bins; not under `--filter`, not what no lockfile placed (`bun prune`) (#29794, #44406). 5. One-time re-downloads: registry metadata (cache format bump), `file:` / URL tarballs, packages of registries on a port, path or http; `bunx` starts a new cache. 6. Retries wait: a registry that refuses connections costs about 9 s before the install fails (main: at once). `BUN_CONFIG_HTTP_RETRY_BACKOFF=<ms>` sets the first wait. 7. Dep names over 255 bytes per component are refused (main: a 4,100-byte name in a manifest aborts), as are the names under Security. 8. Workspace's symlinked `node_modules` is replaced by a real directory, like links at `@scope`, `.bin`, `.bun/**` (main wrote and deleted through them). Only the root `node_modules` link is followed: link the root, not members (#42039). 9. `"trustedDependencies": []` kept the default trusted list off only on the install that created `bun.lock` -> always, also in a checkout without the workspace that declares it; written to `bun.lock` (one line; Bun 1.4 honours it, drops it at its next save) (#44765). 10. `!dir/**` in `workspaces` also removes `dir`, as npm; negated entries work in every spelling (`!./pkg`, `!pkg/`) and position, add no members; `bun run --filter`/`--workspaces` follow them (#43401, #43400; fixes #43399). 11. `bun pm ls` lists what is on disk, exits 1 without `node_modules`; isolated: a dep of the root only if its link exists (#38923; fixes #38909). 12. Linker sticks: while `node_modules/.bun` exists, a command that names no linker keeps the isolated layout (main: lays hoisted over it). Back: `--linker=hoisted` or delete `node_modules`. 13. `NODE_ENV=development`/`test`: `bun install` reads the `.env` files `bun run` reads, not the production ones. 14. `--provenance`, `--provenance-file`, `publishConfig.provenance`, `NPM_CONFIG_PROVENANCE`, `provenance=true` in `.npmrc` are errors (main: published without it). Unset them or publish with npm (#30522; refs #18611). 15. `packageExtensions` adds a key to `bun.lock`, a trailing section to `bun.lockb`, only when an extension added something; older versions load both. 16. Fresh resolves pick differently (locked versions stay): see Resolver; Overrides. glibc hosts stop installing `-musl` variants (`--libc='*'` for both). 17. New `warn:` lines: incorrect peers, deprecated versions, skipped required deps, stale / misplaced `patchedDependencies`, unreadable config files, retries, unusable hashes. 18. Dep's script finds its own `.bin`, then the inherited `PATH`, then shared `.bin`s, so an untrusted package's `node` bin cannot run inside a trusted script. Cost: a global `node-gyp` wins over the project's, for dep scripts only (#44488). 19. If `bun install` itself is killed while a trusted dep's script runs, the next install calls the package installed (registry packages: as main; `file:` folders, local tarballs: the rerun on every install hid it). `bun install --force` (#42001). #### Decisions that need the maintainer's confirmation - Frozen installs start failing (2). Of 241 `bun.lockb` files from this repo's release tags, 6 that pass on main fail here (4 real drift). - A frozen install with only a foreign lockfile writes nothing: no `bun.lock`, no package.json edit, one note (#38804). Reverses #38333. - Changes 1, 9 (teams on 1.4 and 1.5 see the `[]` line come and go), 10, 11, 12 (removing `linker = "isolated"` no longer switches a tree), 14, 18. - The `packageExtensions` lockfile key (15): without it an edited or removed extension cannot be told from the package's own deps. #43104 / #43209 are out for needing a key. - Scripts that run now and did not: #41803 (its opposite #41866 is out), #41845, #39443, #43913, #42001, #38780, `bunx --trust`. No longer: root scripts under `--dry-run`; under frozen, scripts of an installed package trusted after the lockfile was saved (main: every frozen install; now a plain install once, frozen never, silently). - No state file, so a killed install goes unnoticed (19). The complete fix is one bit or list per project, read once per install. - Tarball cache entries named by integrity; full manifests by package name for `libc`; #38813; +1 `renameat` per linked package (#38783); a token survives only an http -> https redirect on one hostname (#38001); #39603 flips a row of #38867. - Hoisted thread pool on macOS: on; CI only, no stress run. - Open: mask URLs in source excerpts under a diagnostic (not done); should `bun pm pack` follow a symlinked `node_modules` (it does, #41925). #### New features and flags - Yarn Berry migration (on main since): here package.json is written just before `bun.lock` and only if that is saved; `link:` stays `link:`; `libc` is honoured (#40057) - `link:./dir`, `link:../x`, absolute paths: symlink to that directory, relative to the declaring package.json, as Yarn / pnpm; `link:foo` stays a `bun link` name (#40025; fixes #4719, #5045) - `packageExtensions` in the root package.json adds missing deps / peers to registry packages, can mark a peer optional (#40053) - `bun pm cache pack <file>`/`unpack <file>`: the cache entries a lockfile needs as one file (CI); unpack adds what is missing, refuses a damaged pack whole (#40012) - `bun pm cache prune [--max-age <days>] [--dry-run]`: drops cache entries older than 30 days, not the global store (#42592) - `bun pm fetch`: downloads all deps (pinned git too) into the cache; no `node_modules`, scripts or lockfile write (#29509) - `bun publish --recursive`/`--filter <pattern>`: packs the selected workspaces, publishes deps first, skips private and already published ones; the first failure ends the run (#41292) - `bun update --depth 0`: direct deps only, transitive ones stay locked (#41720; fixes #41625) - `bun prune --check`: exit 1 when anything would be removed (#39216) - `minimumReleaseAgeExcludes` takes `name@version`; new `--minimum-release-age-excludes a,b@1.2.3`; `bun audit fix` honours the list (#37909, #42803; fixes #28967, #42799) - `minimumReleaseAge` accepts `90m`, `12 hours`, `3d`, `2 weeks`; `nan`/`inf` are config errors; `0` no longer fetches full manifests (#30529) - `libc`: on Linux only the glibc or musl variant of an optional native package is installed; recorded in `bun.lock`; `--libc` overrides (#38797; fixes #16282) - `bunx --cwd <dir>` (#28669; fixes #28668) - `bunx --env-file <file>` (main: `unrecognised dependency format: @.env`); not `bun --env-file F x pkg` (#35599; fixes #12430, #17759) - `bunx --minimum-release-age`, part of its cache key (#30751; fixes #30748) - `--env-file`, `--no-env-file`, bunfig `env = false` for all package manager commands (main: `--env-file ci.env` added the package `ci.env`) (#36672; fixes #12011, #31450) - `npm-shrinkwrap.json` is migrated like package-lock.json (#38861) - Deprecated versions are reported: one line per direct dep, one for the rest, all with `--verbose` (#35457; fixes #6883) - `bun add -d | --optional | --peer <pkg>` moves a package another group lists; `--save-prod` moves it back (#36284; fixes #4852, #5714) - `bun audit fix` reports and rewrites the `overrides` rule that holds a vulnerable version (#38785) - `bun pm pkg set`/`delete`: arrays (append, index), bracketed names (`exports[./package.json]`) (#38025; fixes #22035) - `--dry-run` for `bun link`, `unlink`, `pm version`, `pm cache rm`, `pm trust`, `pm pkg`, `pm migrate` (main: they wrote) (#41690) - `bun publish` honours `publishConfig.registry` and `publishConfig["@scope:registry"]` (#38322; fixes #18670) - Auto-install reads registries and credentials from `.npmrc` (main: `@corp/x` came from the default registry) (#44754) - `NPM_CONFIG_USERCONFIG` names the user `.npmrc`, as `actions/setup-node` sets it (#38047) - `Cache-Control: no-cache`, `no-store`, `max-age` under 300 s on registry metadata (#41644) - Workspace can depend on the root package with `workspace:*`, also for pack / publish (#36594; fixes #2773, #5176) - `"gypfile": false` turns off the implicit `node-gyp rebuild`; a trusted tarball, git, `file:` package with `binding.gyp` and no scripts is built like a registry one (#43913; fixes #43903) - Scripts get `npm_package_name`/`version`/`json` of their own package, `npm_config_local_prefix`, `npm_package_config_*`, `npm_lifecycle_event`, `npm_lifecycle_script`; inherited `npm_package_*` are dropped (#36690, #38110; fixes #12752) - Hoisted linker links packages on up to 8 threads, whatever `node_modules` holds (nothing, a part, other versions, `--force`) and after a download; not on Windows; `file:`/`link:` / workspace / trusted deps, bins and scripts stay on the main thread; everything in today's order, scripts too; a cold install is no faster (#29496) #### Security - Registry URL that is not http(s) (`htps://`, no scheme): `pm view`, `whoami`, `publish`, `audit`, `pm diff` sent the token there over plain TCP; a bad `BUN_CONFIG_REGISTRY` fell back to another registry with the token -> error, no request, on every route (#41662, #41773) - Token, `_auth`, user or password with CR, LF, NUL could inject headers, as could `--otp`, `--user-agent` -> refused (#37458, #41661) - `token = "$NPM_TOKEN"` with the variable unset sent the literal text -> warning, nothing sent (#41049) - Passwords and tokens in registry, tarball, git URLs were printed in errors, warnings, summaries, `--verbose`, `pm ls`/`why`/`view`/`diff`, `audit`, migrations -> masked (#38977, #38997, #38817) - Control characters from manifests, lockfiles, registry answers reached the terminal (`pm view`, `licenses`, `untrusted`, `audit`, resolutions, bin names, errors) -> escaped (#38536, #38631, #39358, #38525) - Dep names `.bin`, `node_modules`, a bare `@scope`, with control characters, empty or scope-only were installed or requested -> refused; skipped with a warning in a third party's manifest (#44439, #38615, #43331, #41735) - Registry, git or tarball package could `link:` a directory, use a local `.tgz` of the project or a `file:` path that leaves it -> refused at resolve and install time (#39023, #38986, #43101) - Dep's own `npm:` alias could replace a same-named direct dep of the root; an alias in a refused or stale lockfile kept redirecting -> the root's dep wins; loaders register no aliases (#44412, #44294) - Frozen install asked the registry for a range that `bun.lock` links to a workspace missing on disk (dependency confusion) -> fails without a request (#43471) - Global store: a trusted package's script could modify shared deps; `pm trust` ran scripts in the store, saw nothing under isolated -> its closure is project-local (#40239, #35106) - Failing script of an optional workspace / `link:` dep deleted that folder -> only what the linker placed goes (#43226) - `bun prune`, `update`, `dedupe` removed packages behind a symlinked workspace `node_modules` -> prune refuses (exit 1), the others skip it (#44484; fixes #44669) - `bun add -g`, `link`, `unlink` replaced or deleted foreign files in the global bin directory -> only what Bun made (#39745) - `bun pm cache rm` could delete the project, home or Bun's directory (an empty `BUN_INSTALL_CACHE_DIR` meant the project) -> refused (#39750) - Project's bunfig.toml could point `globalDir`/`globalBinDir` anywhere -> ignored with a warning (#41775) - `bunx` installed into the shared temp directory, where another user's `node_modules` / package.json was loaded -> `<cache>/.bunx-<uid>`, 0700 (#44393, #31447) - Applying a patch followed symlinks and wrote through hard links -> refused (#32677) - Tarball could make Bun allocate the disk or memory its headers claim; sparse members keep their holes (#36542) - `minimumReleaseAge`: an exact version passed when only the abbreviated manifest was cached; so did a publish time that is not a date (#38659, #43307) - `BUN_CONFIG_NO_VERIFY=0` turned verification off, `=1` did not -> off only for `1` or `true` (#38310) - Manifest hash Bun cannot use skipped verification silently -> warning (#38484) - `bun audit` took a malformed registry answer for a clean audit -> failed audit; a scoped registry is named and skipped (#38557) - Pack: keys of a bundled dep that are not package names pulled in outside files; `**/a/b` patterns, a BOM, trailing spaces disabled ignore rules; a symlinked README was sent (#44902, #41531, #41871) - `bun publish` published with `"private": "true"` or `1` -> any truthy value is private (#41664) - Auto-install read a package.json version from the wrong buffer, an alias could redirect other packages (#42839) #### Install core - Killed or failed install left a half-linked package that later installs accepted -> linked in a staging directory, renamed into place (#38783; fixes #43256) - Switching hoisted <-> isolated left a mixed tree -> whole tree replaced, workspaces' `node_modules` too (#38779) - Each linker switch kept a copy of the old tree in `node_modules/.old_modules-<hex>` -> deleted after the install; `bun prune` collects old ones - `--dry-run` ran root lifecycle scripts and wrote `yarn.lock` (#38830) - bunfig `[install] dryRun = true` was ignored -> honoured, also by publish, `pm pack`, prune, dedupe, `audit fix` (#34979) - Empty package.json (root or member) deleted the lockfile, exit 0 -> error, lockfile kept (#39666) - Download that failed for an optional dep was skipped (exit 0) although another dep or a non-optional peer needs it -> `error: failed to download <name>@<version>`, exit 1 (#43197, #43219; fixes #43214) - `--offline` failed on what is below an optional dep it had skipped -> only misses still reachable are errors (#43185) - `--offline` exited 0 without a required dep of an optional package installed in one place, missing in another - Required direct dep left out for `os`/`cpu` was silent -> warning; `bun add` reports it as skipped (#41956) - `--production`/`--omit=dev` failed on a `workspace:`, `link:`, `file:` devDependency whose target is missing -> left out (#36704; fixes #14134, #15102) - `--production` installed, and ran scripts of, a devDependency that is also an optional peer; `bun prune --production` removes it (#42040) - Commands that only read package.json opened it for writing -> work on a read-only file (#38745) - `$TMPDIR` on another file system than the cache kept a probe file per install (#38859) - `bun add`, `remove`, `update`, `patch` rewrote a package.json in which nothing changed - `Infinity`/`NaN` were written into package.json -> `null` (#41743) - Relative `--cwd` was applied twice by `bun update`, `link`, `unlink`, `why` (#31154; fixes #31152) - Warnings from native code appeared at exit -> flushed when printed, also from Workers (#43004; fixes #42989) - `bun --bun run` worked only for the first user of a shared machine -> `node` shim directory per user (#35565; fixes #7504) #### Resolver and version picking - Range picked a deprecated version (`@types/*` stubs under `*`) -> prefers one that is not, like npm; a locked version stays until `bun update` (#36630; fixes #7571, #25314) - `bun add pkg` installed a deprecated `latest` -> highest release that is not deprecated; `pkg@latest` still follows the tag (#40317; fixes #40310) - Missing or dangling `dist-tags.latest` failed add, install, `update --latest`, hid the package from `outdated`/`update -i` -> highest release, with a warning (#36671; fixes #12041) - `*`, `npm:pkg`, `npm:pkg@*` skipped a prerelease `latest` -> follow the tag, like npm (#39774) - Wide range (`*`, `>=1`) nested the newest version -> shares a resolved version that satisfies it; `bun update` no longer re-adds what `bun dedupe` removed (#38770) - `1.0.0 || ^2.0.0`, `=2.5.0 <2` resolved as their first exact version (#30076) - `>=0.5 0` was read as alternatives -> intersection, like npm (#32993) - `^`, `~`, x-ranges admitted prereleases of their upper bound (`pkg@>=5.0.0-alpha.0 <8` overrode `^4`) -> end at `<X.Y.Z-0` (#43102; fixes #41371) - Exact prerelease met a range that does not admit it (`overrides` keys) (#43150; fixes #43138) - `>1` meant `>1.0.0` -> `>=2.0.0`; `>1.2` -> `>=1.3.0`, like node-semver (#43253) - `<x`, `<*`, `>x`, `>*` matched everything -> nothing; `^x`, `~x` match any version (#43258) - Version number above 2^64-1 was read as 0 -> invalid (#42458) - `Bun.semver.satisfies()` was true for `""`, `1.2.3.4`, `1.2.3 junk` (#32998) - `satisfies("1.0.0+build-1", "^1.0.0")` was false; `< =1` was misread - `pkg@2x`, `1beta`, `1.2x` were read as ranges -> dist-tags (#35259; fixes #19065) - Words starting with `ssh`/`http` were read as URLs -> dist-tags (#37133) - Leading whitespace in a version literal (tag, folder, tarball, `npm:`, `catalog:`) broke the install, lost a pin in `bun add --catalog`, or panicked (#38331, #38309) - Version published after the manifest was cached failed for up to 5 minutes -> manifest fetched again once (#39790) - Root dep edited to another package (`npm:` alias) under a range the old version fits kept the old package (#41774) - Plain dep got a same-named `npm:` alias's package outside its range (#43267) - New dep that follows an `npm:` alias asked for a garbled name (`GET /1.0.0no-deps - 404`) (#43515; fixes #23264) - `file:` and `link:` on one directory became one package (#38114) - `file:` folder in both `dependencies` and `devDependencies` was duplicated (#41833) - Editing package.json re-downloaded GitHub / tarball deps, re-fetched git ones that `bun.lock` resolves (#37142) - Registry package that bundles a `file:../x` dep failed to install (#43125) - Bundled dep's dep took a slot the bundling package resolves through (#38848; fixes #29263) - `bundleDependencies` were kept from one dependency group of a manifest only (#38857) - Tarball, folder or git package whose own `name` is invalid was installed under it -> refused (#38633) - Folder, tarball, git packages without a `name` got broken lockfile rows -> named after their source (#38681; fixes #17060) - Dangling `node_modules` symlink was a resolver error -> missing module; isolated: a failed optional dep goes with the links to it (#38756) #### Hoisted linker - overlayfs: a replaced package of a lower layer kept its old files beside the new ones, exit 0 - Install over an existing `node_modules` hung when the OS refused the pool's first thread - `bun prune` left the `.old-<random>` of a killed install - macOS: clonefile kept a file already at the destination -> replaced (a nested package could hold two versions' files) - Package was hoisted next to an out-of-range version of its peer (#36300; fixes #20376) - Dep nested under a package with `bundledDependencies` resolved the bundled version (#43377; fixes #43351) - After a version bump the old version of a transitive dep stayed at the root (#41053) - Required peer that a migrated lockfile left unbound stayed unbound (#39343) - Tree saved after a ranged peer gained a higher candidate differed from the next install's (#38767) - `file:` override on a registry package's or transitive dep was not linked or resolved from the wrong directory -> from the project root, linked with its deps (#38994, #44339; fixes #44299) - One `file:` folder that cannot be hard-linked (EXDEV) switched all later packages to copyfile (#40663) - Failed optional dep left its `.bin` links (#44931) #### Isolated linker, global store - `node_modules` or entry that is a mount point (Docker volume) is kept and reset in place - `bun add -g` never linked bins into the global bin directory (#30451; fixes #28597, #30450) - Optional dep whose tarball cannot be downloaded or is corrupt failed the install -> skipped with a warning, also `--offline` (#43229; fixes #43212) - `node_modules/.bun/node_modules` changed between installs of one lockfile with `npm:` aliases -> links named by the dep, one layout (#40356; fixes #40355) - Packages that are peers of each other were installed twice (#29345; fixes #29343) - Missing `link:` target was accepted -> install fails, as hoisted (#38045) - Registry package's own `file:./vendor/x` dep failed -> linked from inside the package (#38856) - Workspace's scripts ran before the root's deps and bins were there -> after everything else; a bin such a script writes is linked for every dependent (#44868) - Empty directory, or one without package.json, in a link slot stayed (#41453) - Store names of non-ASCII paths were garbled (#40719) - Package used under its name and an alias got bins for one dependent only (#44446) - `--omit=peer` dropped a peer an ancestor provides; `bun prune --omit=peer` agrees (#41416) - Files deleted from a `file:` folder stayed in its copy (#37138) - Links of a renamed or removed workspace stayed in `node_modules` (both linkers) (#38511) - `bun prune` left dangling links to removed optional / peer deps in store entries (#42625) - Switching the global install's linker removed `bun link` registrations (#43582) - Global store: a package whose peer is typed by the project's `@types/*` was shared, TypeScript missed the types -> project-local (#36796; fixes #36795) - Ranged peer whose auto-installed version drops out of the saved tree was linked to nothing (#38768) #### Bins - Hoisted: with `--silent` a failed bin link exited 0 and saved the lockfile -> 1, nothing saved (#44997, #44958) - Every install recreated `.bin` links, failed with `EEXIST` on a read-only up-to-date tree -> a right link is left alone (per bin: chmod 1 -> 0, unlink 1 -> 0, symlink 2 -> 1) (#36701, #20067; fixes #14736) - Several packages with one bin name: an arbitrary one won -> direct deps first, then registry / git / tarball before workspace, `file:`, `link:` packages, then by name (#31416, #41867) - Isolated made bin targets 0777 -> `0777 & ~umask` (#41509) - One bin that fails to link stopped the rest (#38972) - `bin` entry whose value is not a string dropped the package's other commands (#43159; fixes #43148) - File system that refuses symlinks (EACCES / EPERM) failed the install -> one warning, no `.bin` links (#40161) - Bare `bun update -g`/`bun ci -g` linked no bins; a reinstalled global package gets its command back (#43384) - `bun pm migrate`/`pm trust` wrote uninitialised bin bytes into `bun.lockb` (#37581) #### bun.lock, bun.lockb - Corrupt or crafted `bun.lockb` crashed or hung install, `pm ls`, `why`, `outdated` -> validated at load, refused with a warning; files by Bun 0.x are normalised and keep loading (#32753, #39720) - Two strings whose hashes collide became one in the lockfile (#41642) - Root `file:` or registry dep named like a workspace made Bun write a lockfile it refuses (`Duplicate package path`) -> the member beats `file:`; a registry range it does not satisfy gets the root slot (#37245, #37248) - Root alias of the registry package named like a workspace dropped the workspace (#43567) - `file:` paths from the lockfile were resolved from the wrong directory after `bun update` or an override removal (#38850) - Re-resolving install dropped packages `bun.lock` holds only through optional peers (#39002) - Package printed at several paths got its edges from the wrong row (#39347) - Re-saving moved a bundled peer off its entry's version, and a peer nothing satisfies (#38837, #38892) - `bun add` installed nothing when `bun.lock` repeats a dependency line (#43271) - `--lockfile-only` saved after an error; `--silent` failed on a `bun.lock` it ignores (#44364) - `bun.lock`, `bun.lockb`, `yarn.lock` ignored the umask (`yarn.lock` 0666) (#41808) - `bun <path>.lockb` printed the directory's lockfile, read `.env`, needed package.json -> prints the given file (git textconv works) (#44870) - `git+git://` resolutions did not load back from `bun.lock` (#38798) - `bun pm migrate`/`pm trust` wrote another `configVersion`/`patchedDependencies` than install; yarn entries without `#sha1` (#41908; fixes #38193) - Absolute or over-long workspace path in `bun.lock` / pnpm-lock.yaml crashed or counted as pruned (#43405) - `bun install --yarn` rewrote an unchanged `yarn.lock` every time #### --frozen-lockfile, bun ci - `bun ci` failed in a workspace when nothing changed (member with a script and a `latest` row); one member's edit moved pins elsewhere -> members are compared row by row, keep their pins (#44919; fixes #26070) - Version the lockfile pins was blocked by `minimumReleaseAge` (#40032; fixes #40031) - After a migration with a root postinstall, or `pm migrate` to `bun.lockb`, the next frozen install failed on the meta hash (#44501) - With both `overrides` and `resolutions` only `overrides` applied -> both; a lockfile without those rules fails frozen, 1.4's too (#38811) - Direct dep pinned outside its unchanged range (one-sided merge) was installed, frozen passed -> re-resolved; frozen fails (#43375; fixes #43795) #### Migrations (npm, pnpm, Yarn v1) - Yarn Berry: a range `yarn.lock` has no key for is the workspace that satisfies it; Yarn's own `packageExtensions`; `resolutions` keyed on an alias; a name in several groups of a workspace; `catalog:` in an extension; `%xx` in a folder name; clearer refusals (#45052) - Yarn v1, npm: a dep the lockfile has no entry for is reported (#45052) - npm: a scope registry with a path and no trailing slash gave `InvalidNPMLockfile` (#38698) - npm: a package's own `file:` directory was resolved from the project; one that climbs out is skipped (#38990) - npm: a `file:` directory copied by `--install-links` failed with EISDIR (#43103) - pnpm: `pnpm-workspace.yaml` was read only with a migratable lockfile; `bun patch --commit` then segfaulted (#38754) - pnpm: the `pnpm` block was removed from package.json -> kept, fields copied (#38775) - pnpm: `onlyBuiltDependencies` was lost -> `trustedDependencies`; isolated reports blocked scripts (#38780) - pnpm: importer rows differed from a package.json parse, the next install rewrote `bun.lock` (#38791) - pnpm: only used catalog entries were migrated (#38829) - pnpm: non-string keys / values in `pnpm-workspace.yaml` crashed -> scalars copied as written (`react: 18` -> `"18"`) (#44470) - Read-only commands and failed installs wrote a migrated lockfile and package.json edits -> only a command that saves a lockfile (#38804) - Yarn v1: workspace packages were dropped when the root has no deps (#38878) - Yarn v1: `npm:` alias packages were named after the tarball URL (#38948) - Yarn v1: registry entries without `resolved` failed (#38985) - Yarn v1: an entry without a buildable resolution aborted the migration -> skipped with a warning (#39001) #### Workspaces, catalogs - Member without a `name` failed the install -> skipped (#38781; fixes #6317) - Dist-tag (`latest`, `""`) on an unpublished sibling got a 404 -> links the workspace (#35468; fixes #4830) - Empty `workspace:` spec linked the project into itself -> error; a glob like `../*` made the root its own member (#41653) - Workspace globs skipped symlinked member directories (#41567) - Range linked to a workspace stayed linked after the root dropped it (#43468) - Workspaces of a package.json in `/` (or `C:\`) were not found (#43404) - `workspaces` glob that fails named no path (#43517) - `bun update <name>` rewrote `workspace:^`, `file:` and other non-registry entries (#38847) - `bun add member@workspace:^` lost the spelling (#38866) - `bun update` printed no row, or another catalog's version, for a moved catalog entry (#38763) - `bun update -i` updated one of several catalogs defining a package -> a row per catalog (#36446) - Failed `catalog:` dep always suggested `bun add --catalog` -> only where that works (#44638) - `npm run <script> -w <ws>`/`--workspaces` inside a script recursed forever -> runs the workspace's script (#33800; fixes #22719, #24838, #33796, #41543) #### Overrides, peers - Auto-installed peer took the newest version of one asker -> newest that everyone asking accepts (#36646; fixes #8292, #15711) - `*` peers resolved by manifest arrival order -> after their siblings; unprovided peers in a fixed order (#37713) - `incorrect peer dependency` was checked against any copy in the tree, hoisted only, every install -> the copy each dependent resolves, both linkers, only when something was resolved (#41936; fixes #7403) - Peer that a `file:`, `link:`, tarball or git dep provides was looked up in the registry (#33156) - Peer dependency on `bun` downloaded the `bun` npm package (80-170 MB) -> optional (#39757) - `minimumReleaseAge` blocking a peer or optional pin failed the install -> warning (#38995) - `bun update name@version` bound a peer row to a stale lockfile leftover (#38901) - Override replaced the link to a member of that name (#37271) - Changing `overrides` / catalogs re-resolved rows a package no longer owns (#38849) - `bun update <name>` left rows of a `$name` override stale, frozen passed (#43981; fixes #43975) - `bun update --latest` moved versions an override selects; `-r` wrote `"latest"` into package.json (#44485) - `overrides`/`resolutions` that are not objects were ignored -> error (#40729) - Keys `foo@catalog:`, `my-foo@npm:foo[@^1]` (Yarn) were ignored with a warning #### Registries, credentials, .npmrc, bunfig - `.npmrc` credentials follow npm's key walk: `//host/` covers paths below it, `_auth` sent as written, a line reaches registries named by `--registry` / env / `$VAR`, a tarball on another https host gets that host's line; a sibling or look-alike path inherits nothing; `:443`/`:80` keys keep working (#40423; fixes #28233, #30311, #30513, #40549) - Registry URL without a trailing slash lost its last path segment (#36294; fixes #5368, #14017, #16185, #20373) - `user:pass@` in a registry URL from an env var was dropped (#38834) - `user@`/`user:@` sent nothing -> Basic auth with an empty password (#39063) - URL credentials were sent percent-encoded -> decoded (`p%40ss` sends `p@ss`) (#39603) - `.npmrc`: `;`/`#` comments were part of the value; `ignore-scripts=1`, `=True`, empty did nothing -> as npm (#41916) - `.npmrc` keys and values kept Unicode whitespace (#41714) - `--ca`/`--cafile` were shadowed by a config file's `cafile` -> one setting, a later layer replaces both (#41898) - `-g` commands ignored `globalDir` from `--config` and `~/.bunfig.toml` (#35454; fixes #4553; refs #12886) - `~` in `cache.dir`, `globalDir`, `globalBinDir`, `cafile` was a literal directory (#36667; fixes #10152, #26715) - `[install.cache] disable = true` still cached manifests (#36219) - Unreadable `.npmrc` / bunfig.toml was skipped silently -> warning (#41693) - `bun publish`, `pm whoami`, `audit`, `pm view`, `pm diff` ignored `http_proxy` and `NODE_TLS_REJECT_UNAUTHORIZED=0` (#38075, #38093) - `bun pm whoami` sent a stub CI name -> the real vendor (`ci/github-actions`) (#40805) #### Network, retries - Retries came at once, one network error halved concurrency -> 250 ms doubling to 10 s with jitter, `Retry-After`, 429 / 408 retried, certificate errors not (#40009) - Timed-out request was retried silently -> a warning per retry (#35168) - `BUN_CONFIG_MAX_HTTP_REQUESTS` was ignored (#38744) - Help and docs said `--network-concurrency` defaults to 48 -> 64 (#38759) #### Cache, tarballs, extraction - Process could exit before the manifests it fetched were cached: `--offline` right after an install could fail - `file:` / URL tarballs were cached by path or URL, two projects or branches got each other's package -> by the integrity in `bun.lock` (#39016) - `file:` / URL tarball deps were reinstalled on every run (hoisted) -> verified by a `.bun-tag` (#35576; fixes #8260) - `--force`, `bun update`, re-adding the same path / URL kept old bytes or the old hash -> direct tarball deps are fetched again (#31868; fixes #31864) - Re-extraction leaked the displaced cache folder; extraction directories stayed in `$TMPDIR` (#38702, #33979; fixes #33977; refs #28062) - Two registries on one host (port, path, http) shared cache entries (#41636) - Concurrent installs sharing a cache deleted each other's entries (ENOENT without `RENAME_EXCHANGE`, NFS) -> first writer wins (#36229; fixes #36227) - Gzip trailer was not verified (since 1.3.14) -> a damaged tarball fails; also `Bun.Archive` (#41503) - Body that is not gzip installed as an empty package; a tarball without package.json stayed in the cache - Query string / fragment of a tarball URL ended up in the extraction folder name (#39011) - `github:` tarballs extracted symlink entries -> skipped, like npm (#31481) - Rewriting a cached manifest unlinked it first -> atomic replace (#38916) - `--no-verify` cached unchecked bytes under the lockfile's hash, for all projects -> own key; isolated kept such a copy #### git, GitHub, folder deps - Cached git dep never saw tags / branches pushed later; `bun update` follows moved refs (#35566; fixes #11548, #13769, #15336, #18947) - `git+ssh://git@host:2222/..` lost its port in the ssh fallback (#36932; fixes #36931) - `deploy@host:org/repo.git` became `git@deploy@host` (#35026) - `bun add name@git+ssh://host/repo.git` lost the alias for hosts other than GitHub (#36687; fixes #13891) - `github:o/r#feat%2Fx` silently installed the default branch; an escaped owner / repo is an error (#43172) - Optional git dep that cannot be cloned or lacks the ref failed the install -> skipped with a warning, also when locked (#43076, #43352; fixes #43350) - Several `github:` / git refs on one commit, or a `file:` folder declared by several packages, failed with EEXIST or wrote a lockfile Bun refuses -> one package (#42640, #42545) - Concurrent cold installs replaced each other's git cache folder (#42656) - `GIT_DIR` (git hooks) made install and `bun create` work on another repository -> 13 git variables are not passed on (#41715) - `file:` folders declared by git / tarball packages were resolved from the project (#38816) - Bare word or `git@host/path` was handed to `git clone` as a local path; a URL could be read as an option - `bun link -g`/`unlink -g` failed; `bun link -g <name>` removed the registration -> `-g` is ignored (#33142; fixes #21397, #33141) #### Lifecycle scripts, trust - Hoisted: beyond `--concurrent-scripts`, the next script waited for all running ones to end -> for one - Failed or unstartable script left other packages in place whose scripts never ran, and never would -> removed - `trustedDependencies` entry added to a member after the first install did nothing -> its blocked scripts run once (#41803) - Isolated: a package trusted after it was installed never ran its scripts (#41845) - Package installed through an `npm:` alias could not be trusted consistently -> by its real name in package.json, `--trust`, `pm trust`, `bun.lock` (#39443) - `bun pm untrusted`/`trust`/`ls --trusted` followed a stale lockfile, knew nothing with `bun.lockb` -> read package.json (#41933, #34327) - `pm untrusted`/`trust` listed and reran workspace members (#41513) - Failing script of a package both optional and required deleted the package, exit 0 -> install fails (#43218; fixes #43211) - `--concurrent-scripts` did not apply to the isolated linker (#42445; fixes #42421) - bunfig `concurrentScripts` beat `--concurrent-scripts` (#42422) - Node-gyp shim was unreachable when the temp directory falls back to the cache (#38098; fixes #38079) - `--help` said dep scripts never run -> `--ignore-scripts` also skips trusted ones (#38893) - `bun pm -g untrusted` suggested `bun pm trust` -> `bun pm -g trust` (#44663) - After a failed script, a half-deleted git / tarball / patched package counted as installed #### Security scanner, audit - Scanner saw registry packages only -> every resolved dep (git, GitHub, tarball, `file:`, `link:`), URLs without userinfo / query; a fatal advisory stops them before install and scripts (#37590) - `--production`/`--omit=dev` failed when the scanner is a devDependency (#31031; fixes #31028) - Scanner process loaded `.env` itself -> gets the install's environment, follows `--env-file`, `--no-env-file`, `env = false` (#44845) - `bun audit fix` could downgrade into an older major (#39317) - `bun audit --help` lacked `--production`, `--omit`, `--dry-run`, `--cwd` (#38836) #### add, remove, update, outdated, link - Hoisted: `bun remove foo` deleted the `node_modules/foo` another workspace has for `"foo": "npm:bar"` - `link`, `install <pkg>`, `install --analyze`, `update -i`, `remove` exited 0 after `Failed to install N packages` -> 1 (#44989) - `bun add ../path` from below package.json, `bun install -g .` resolved from the wrong directory -> the cwd (#43348, #36623; fixes #5682) - `bun add <folder | tarball | git url>` of a declared package wrote it twice (#43380; fixes #8031) - First `bun add -g` used a package.json above the global directory (`~/package.json`) (#30659; fixes #40683) - `bun add --dry-run` in an empty directory created package.json (#36694; fixes #13244) - `bun remove` reordered package.json keys -> order, tabs, final newline kept (#35586; fixes #7215, #9351) - `bun remove -g` left dangling links in the global `node_modules/.bin`, deleted foreign dangling links in the bin directory (#43403) - `bun update <name>` blanked an optional / peer range no version satisfies (#43195) - `bun update` that only rewrites package.json said `(no changes)` (#38918; fixes #38908) - `bun update -i` repeated its prompt on mouse clicks and in short terminals (#39683) - `update -i`/`outdated` tables were sized in bytes -> display width (CJK, emoji), cells escaped (#43333, #43236) - `outdated`/`update -i` used the lockfile's ranges -> package.json's (#42005) - `bun outdated a b` needed all patterns to match -> union; `!pattern` removes (#43309) - `outdated`/`why` knew an aliased dep by one name -> either, both printed (#43338) - Coloured version diff dropped the build tag, left a tag that only grows (`rc.1` -> `rc.10`) dim; long prerelease tags were garbled (#38688, #38649) - `minimumReleaseAge` error swapped range and name (#37895) - `bun link`/`unlink --help` described a wrong `--save` default (#38915) #### bun pm, why, info - `bun pm pkg get` of several values altered one with a `}` in it, left a key unescaped (#45061) - `bun pm cache rm --cache-dir <dir>` cleared the global cache -> `<dir>`; project config still cannot redirect it - `bun pm bin -g`/`pm ls -g` failed before any global install -> work, write nothing (#36622; fixes #6382, #7501, #13019) - `bun pm cache rm` says when the global store goes with the cache; docs name `--force` for stale manifests (#43667) - `bun pm version` saw no repository in worktrees / submodules (`.git` is a file) (#41754) - `bun pm version prerelease` overflowed above 2^32; versions npm calls invalid were accepted (#42459) - `bun pm view pkg@tag`/`pm diff` used `latest` for an unknown dist-tag -> error listing the tags (#42063) - `bun pm`, `pm --help`, an unknown subcommand printed three help texts, unindented, without `pm diff` and `ls -g` -> one (#39487, #43314, #43098; fixes #43310) - `bun pm bin -g` said `not in $PATH` for an entry with a trailing slash (#28773; refs #28771) - `bun why` printed a package's dependents at every occurrence (exponential) -> once, repeats `*deduped` (#37922) - `bun why name@version` failed for exact / scoped names, ignored a workspace's version (#43284, #43290; fixes #43288) - `bun why`: no-match error on stdout -> stderr (#43287; fixes #43285) - `bun why`: branch left open after the last visible workspace dependent (#43292; fixes #43291) - `bun why`: a cycle back to the queried package is `*circular` at its first repeat (#43300; fixes #43295) - `bun why`: a root package.json without `name` was missing as a dependent (#43277) - `bun why`: a peer dependent was shown under the wrong copy (#41941) #### pack, publish - `workspace:`/`catalog:` versions came from `bun.lock` (stale, or failed without one) -> the package.json files; no lockfile is read (#38813; fixes #20477, #20829) - `workspace:` aliases and directories were published as written -> `npm:` aliases; the workspace's version (#38788, #38835) - `!pattern` in `.npmignore` could not re-include files below an excluded directory (#36699; fixes #15602) - Relative `--destination`, `--filename`, `bun publish ./x.tgz` were resolved from the package root -> the cwd (#38739, #38704) - Failed pack left a partial tarball, `publish --dry-run` deleted an existing one, a FIFO `--filename` hung -> built in memory, written once complete (#38721) - File names that are not UTF-8 were mangled, two became one entry (#38715) - File systems whose readdir reports `DT_UNKNOWN` lost entries (#38716) - `bin` paths naming no file, `..`, a trailing slash in `directories.bin` broke pack; an empty `bin` hid `directories.bin` (#38720) - File under several `bin` names was packed several times (#41291) - Directory, bin or bundled dep that is there but unreadable was left out silently -> exit 1 (#44400, #44873) - `bun publish` accepted a `version` that is not semver -> refused after the scripts; `v1.0.0` goes out as `1.0.0` (#43142) #### bun patch - `--commit` from a workspace member flipped the root package.json's final newline to the member's - Patch adding a file in a new directory failed with `EACCES` for non-root users (#33573; fixes #13330, #33571, #38569) - Hunks were applied by line number, wrote wrong text when the file had moved; `-U0` hunks landed a line off -> placed by context like `git apply`; `hunk #N does not apply` fails the install (#41733, #41695; fixes #38879) - Old-style diffs whose hunks delete lines starting with `-- a/` were misparsed (#34870) - Failed copy, missing cache entry, missing git or failed `git diff` left a partial or no `node_modules/<pkg>` -> staged copy, everything put back (#43188, #43160; fixes #43164) - `bun patch` dropped the package's bundled and nested deps, `--commit` recorded them as deleted (#43178) - `bun patch` of a bundled dep deleted the bundled copy -> refused (#43199) - `bun patch` of a `file:` folder, `link:` or workspace package damaged `node_modules` -> refused (#43223; fixes #43200) - `bun patch <path>` replaced a folder with another version -> refused when the version is not locked (#43367; fixes #43353) - `npm:` alias could not be named by its package; a second `bun patch <alias>` lost the first patch (#43382) - Isolated: `bun patch <transitive>` made a stray `node_modules/<name>` -> edits the store entry (#43383) - `bun patch` replaced workspace links and symlinks above the package, could write into the global store -> links stay; anything under the cache is refused (#43406) - `--commit` on a patched package wrote `.bun-tag` files and cache paths into the patch, read `/etc/gitconfig` (#44349; fixes #19327, #44320) - `--commit`: a new binary file became empty, a changed one was skipped, exit 0 -> commit fails - Member's `patchedDependencies` were ignored silently -> warning (#39869) - Isolated: `bun patch` replaced `node_modules/<pkg>` by a directory that could not load its deps -> edits a copy in the store entry, the link stays; global store: `--commit` restores the link (#43365) #### bunx - `bunx pkg@latest` relinked everything each run, a day-old tree was refreshed every run -> once; served with a warning when the registry gives no answer (#41226; fixes #23597, #41211) - Several `bunx <pkg>` at once corrupted the shared install -> file lock (#37851; fixes #37830) - `directories.bin` was resolved from the wrong directory (#39096) #### bun create - Windows: a GitHub template silently overwrote files (its conflict list was always empty) and wrote through junctions -> listed; `--force` replaces the link - `bun create <local template> <dir>` deleted an existing directory -> merges, lists conflicts (links in the destination too), overwrites only with `--force` (#36351; fixes #27948, #36341) - `git init` / commit raced tasks and install -> finished first; the first commit holds exactly the template (#41342; fixes #36953) - `bun-create` tasks ran without a shell, not at all without deps, failures ignored -> run like package.json scripts, with `npm_package_name`; a failing task stops with its exit code (#41598, #38955) - Failed nested `bun install` was ignored -> exits with its code (#38485) - Absolute template path crashed -> local folder; `.`, `..`, an empty name are refused (#41770) - `bun create ./Component.tsx` overwrote your stylesheet, `styles/globals.css`, `lib/utils.ts` -> kept and listed; `--force` overwrites (#44668) - Template's package.json indentation was lost (#36965; fixes #36964) - Missing-export hint printed `{{` `}}` (#37847) #### Auto-install - Timers and I/O callbacks ran inside `require()`, `import()`, `Bun.resolveSync()` while a package was fetched -> the thread waits; git deps are no longer cloned at run time (#36159; fixes #43842) - Second version (`pkg@2` after `pkg@1`) with the manifest in the disk cache failed with `Unexpected` (#36659; fixes #10411) - Failed lookup failed until the process exited -> a 404 stands as long as a cached manifest (5 min, or its `Cache-Control`); any other failure is asked again once the event loop has gone around (#42883) - Failed download limited `fetch()` to 4 concurrent requests for the rest of the process (#42945) - `--prefer-offline` still asked the registry -> cached manifest (#36776) - Resolve errors did not say why (#38180) - bunfig `install.prefer` worked for `bun run <file>` only -> also `bun <file>`, `bun test` - Dep whose name or version has a JSON escape fell back to `latest` #### Completions, installer - Second completions line was added to a `.zshrc` that already sources `~/.bun/_bun` (#35561; fixes #10897) - fish completions went to `/etc` when `~/.config/fish/completions` is missing (#41659) - install.ps1: the `another bun.exe is already in PATH` check never fired (#38567) #### Crashes, panics, hangs - Hang until out of memory on a dependency cycle -> `dependency cycle cannot be laid out in node_modules`, exit 1; a bundled back-edge installs (#38976) - Hang: a dangling `node_modules/@scope` symlink (hoisted) - Hang: `--concurrent-scripts=0` -> the default (#42379) - Hang: isolated, a tarball URL that cannot be requested (`ftp://`) (#39672) - Hang: isolated, cold cache, a git dep that is scp-form, a peer, from `overrides` or spelled differently in `bun.lock`; after a failed clone / checkout (#44448, #37156, #43075) - Panic: paths that do not fit the path buffer in both linkers' walks, `link:` targets, long linked names, `<alias>/package.json` -> `ENAMETOOLONG`/`Invalid dependency name` (#37424, #37400, #38369, #38571, #38575) - Panic: over-long `--cafile`, `--cwd`, `add --filter`; `$BUN_INSTALL`/`$HOME` with `-g`; bunx bin names; pnpm `link:`/`file:` paths; progress bar names (#41702, #38413, #37394, #43537, #38558) - Abort of all package manager commands, `bun run`, `bunx` in a cwd within 13 bytes of `PATH_MAX` -> `ENAMETOOLONG`, or the file counts as unreadable (#42502) - Panic: `outdated`, `update`, `update -i` on a `bun.lock` without `packages` (#41647) - Segfault: package.json nested ~8,400 levels; a deep YAML alias chain in pnpm / Berry files - Panic: all `bunx` install flags at once - Use-after-free in `bun add --trust` and at the end of an isolated install (#31245, #39640) - `Bad system call` on Android / Termux (`openat2`, `fchmodat2` under seccomp) (#39084) #### Windows - Bins whose shebang uses `env -S` did not run (#31391; refs #22422, #27924, #31387) - `.bunx` shims broke when the package is on another drive (#38018) - `bun remove` left `.bunx`/`.exe` shims (#35585; refs #11970) - `bun install` failed in the root of a drive (#43437; refs #29273) - `EINVAL: Failed to replace old lockfile` on exFAT / FAT32 (#33029; refs #10169) - Concurrently published cache entry was deleted; renames failed while a virus scanner holds a new file -> retried for 5 s (`BUN_INSTALL_WINDOWS_RENAME_RETRY_MS`) (#33884, #35568; refs #11250, #28062) - `bunx.exe` was written when the hard link fails -> `bunx.cmd` (#35686) #### Performance User-space instructions of `bun install` (`perf stat`, median of 3, millions), generated project of N packages, loopback registry; warm = nothing to do, relink = cache + lockfile, no `node_modules`. | | main N=400 | branch N=400 | main N=1600 | branch N=1600 | |---|---|---|---|---| | hoisted warm | 22.5 | 20.3 | 146.5 | 80.1 | | hoisted relink | 24.5 | 21.6 | 150.3 | 83.3 | | hoisted cold | 121.0 | 122.2 | 511.2 | 474.6 | System calls per package (`strace -c`, slope between 100 and 300 packages of 31 files). Per run: a few more `lstat` (change 8), one read per `file:` directory dep. | | main | this branch | |---|---|---| | hoisted cold | 215.96 | 211.95 | | hoisted relink | 72.00 | 70.00 | | hoisted warm | 4.00 | 4.00 | Quadratic scans in the `bun.lock` workspace parse, `yarn.lock` printer (#34537) and Yarn v1 migration (#37244) are gone; no allocator heap per cached package.json (#44610). | | main | this branch | |---|---|---| | `bun pm hash`, 32,000 workspaces (ms) | 6,914 | 236 | | `bun pm migrate`, Yarn v1, 20,000 entries (ms) | 24,210 | 270 | | peak RSS of `bun install`, 2,100 workspaces (KB) | 90,840 | 34,728 | | hoisted, 1,000 packages x 30 files, cache, no `node_modules`, 8 cores, wall (ms) | 381 | 120 | | same, 4 cores | 383 | 174 | | same, 2 cores | 222 | 162 | | same, `node_modules` lacks half, 8 cores | 140 | 54 | | same, 4 cores | 174 | 65 | | same, 2 cores | 161 | 107 | | same, no cache, no `node_modules`, 8 cores | 363 | 394 | | same, 4 cores | 418 | 401 | | same, 2 cores | 477 | 541 | #### Internal, no user-visible effect - Earlier fold of 171 PRs is the first layer; 12 of them were taken out again (#39403) - One implementation each: trusted set, required-dep predicate, failed-optional discard, bin linking, package.json walk, `--cwd`, cache publish, specifier -> version (was 4), lockfile writer, registry request - `pack()` consumes its context; one `binding.gyp` predicate; Yarn v1 migrator 2,032 -> 888 lines, no `unsafe` (#37670, #43912, #37539, #38303, #37865) - Debug builds: opt-in stack dump, `node` shim directory kept, manifest cross-check deleted (#37335, #37384, #43170) - Binary size pass (outlined helpers, shared flag tables, index sorts): +464 KB -> see Performance; dead auto-install disk scan removed. `unsafe` in src/install: 585 -> 540 #### Test-only PRs - verdaccio replaced by a registry on `Bun.serve` (on main since): #44055 - No public network: #35035 #35377 #35384 #36717 #36718 #36721 #36889 #38185 #38467 #39022 #39655 #40087 #40538 #40956 #42800 #42802 #43289 (fixes #43286) - Concurrent, a cache per test: #38464 #38504 #40095 #40635 #39646 #40198 #40450 #39956 #39740 #41110 - Exact output / lockfile / layout (nested-overrides, bun-add-filter, lockfile-sync, frozen-lockfile-pruned, pm-licenses, isolated-relink): #39648 #39746 #40452 #40454 #40456 #41118 - Flake causes removed (stdin / pty races, racing ranges, cold manifest cache, un-awaited matchers): #34175 #41401 #41591 #38858 #39190 #38627 #37333 #33279 - Faster (streaming-extract, git-deps, npm-arborist): #35915 #40447 #40977 - New guards (`..` tarball entries, Bun's own `bun.lock` passes frozen, hoisted layouts, what a linker verifies): #37431 #42384 #43878 #41864 - Harness (`isRoot`, peak RSS, `pm trust` CPU test on Windows): #39232 #43192 #35626 (refs #11252) #### Taken in part (what is in. Not: what is not) - #19637: opt-in `bunx --trust` (runs the scripts of the package and its whole closure). Not: trust by default - #29794: change 4. Not: removing a stale copy no lockfile placed (`bun prune`) - #30522: change 14. Not: signing; #15601 open (refs #18611) - #31327: a junk integrity in a v2+ `bun.lock` is an error. Not: pinning a computed sha512; refusing an empty integrity under frozen - #32022: 10 helpers redone on current code, 26 of 28 pinning tests. Not: non-install parts - #35253: `bun create` without a git identity stages the files, says the commit was skipped. Not: a made-up author - #35807: `npm_config_ignore_scripts=true` turns scripts off. Not: `false`/`0` turning them on over a config file - #36387: false `Workspace name already exists` on a hash collision. Not: the same for `trustedDependencies` names (one stays blocked) (refs #36386) - #36973: docs of the store layout as it is. Not: a stability promise - #38001: a token survives an http -> https redirect on one hostname. Not: another port (still stripped) (refs #15516) - #38832: its forced-arrival-order tests, expecting one copy (#38770). Not: its two-copies policy - #39505: cold generics -> runtime flags in summary printer, `pack`, lockfile read. Not: typed arrays, coverage - #39886: an override on a peer was lost behind a same-named root `npm:` alias. Not: a peer without an override shares the alias (`react` -> `npm:@preact/compat`) - #40053: features, change 15. Not: `[install.packageExtensions]` in bunfig; `pnpm.packageExtensions` without a migration; `catalog:` values (ignored, warning) - #40110: warning for a `patchedDependencies` key that matches no installed version. Not: failing frozen - #41724: moot for tarballs (named by integrity). Not: new names for bare git clones - #41759: a package.json in a sticky shared directory above the cwd (`/tmp`) is ignored, with a warning. Not: the owner rule - #41863: `pm pkg set --json` with a value that is not JSON is an error, nothing is written. Not: strict JSON (`0x10`, `.5` are normalised) - #41921: Linux: a script no longer outlives a killed install. Not: signal forwarding; macOS - #41925: symlinked bins / `directories.bin` are neither packed nor listed. Not: race-proof opener, Windows, a symlinked `node_modules` - #41931: change 2. Not: failing on trusted / patched edits or equivalent spellings (refs #22689) - #42001: after a failed script the next install reruns it and what it blocked. Not: change 18 - #42030: a plain install re-reads a `file:` directory's package.json. Not: failing frozen (warns) - #42039: change 8; `bun prune` refuses a linked `.bun`. Not: the root link (on purpose); a package's own directory on a warm run - #42052: `bun pm view`/`info`: no project needed, several fields, npm paths (`maintainers[0].name`), semver-sorted `versions`, `bin:`, `DEPRECATED`. Not: new `--json` errors (refs #20673) - #42139: npmrc.test.ts: isolation per case, concurrent. Not: exact pins - #42400: `pm diff` compares a folder of this project as pack publishes it. Not: folders of other projects - #42597: nothing of the project's `.env` reaches install's `git`. Not: proxy / TLS variables from `.env` - #43067: the 255-byte name bound, the install cases. Not: the repo-wide sweep - #43375: which package owns an override row; direct deps outside their range. Not: transitive rows - #43556: `bun patch` never writes into the global store. Not: a project-local copy that installs keep - #43581: a registry package's peer / optional edge to a workspace missing on disk is dropped. Not: the pre-flight report - #43793: the walker looks at link entries; the `@scope` hang. Not: materialising symlinked cache entries; #43788 unverified - #44058: Windows: `node` shim next to bun.exe when `%TEMP%` is on another drive (never run). Not: a missing `%TEMP%` (warning) (refs #44033) - #44406: change 4. Not: a copy no loaded lockfile names - #44488: a dep's script finds its own `.bin`, then `PATH`, then shared `.bin`: another package's bin cannot shadow `node`/`sh`. Not: bins per script owner - #44641: its install test and docs hunk. Not: 13 HTTP / fetch test files - #44793: Windows: the launcher of a `.cmd`/`.bat` bin (any case) refuses cmd.exe special characters. Not: `bun run <bin>.cmd` - #44798: a `node_modules` a git dep commits is dropped unless it bundles (then without links). Not: bundled closure only - #44847: a workspace's `node_modules` is reset when only the root's was deleted. Not: moving stale directories aside; a marker #### Not taken - #20178: the isolated linker covers it; #6850 open - #28515: prints the repo URL, no changelog - #29512: `bun pm sbom`: own PR - #30289: a `bun link` name would override every project - #30340: checks after the fetch, fails open - #30582: config surface without demand - #30863 #40976 #43643: not install: install.sh, `bun upgrade` - #31585 #41750 #43144 #43242 #44509: not install: `Bun.Archive` - #31979 #37596 #37646 #37678 #39165 #40312: refactor nothing needs - #33113: needs a Windows measurement - #33972: masks a flake; cause gone with #37713 - #35105: distrusts the cache directory - #35371: borrow refactor, no longer applies - #35571: re-lays existing monorepos; #9838 open - #35602: false positives, harmful advice - #36081: needs the public registry - #36464: stale; weakens lockfile parsing - #36476: the next step after this PR - #36556: reverses an earlier hardening - #36557: its code is deleted (#44393) - #36587: restores a dead warning - #36631: contradicts a landed test; #7869 open - #36682: the typo already gets a clear error - #36688: a landed test pins the opposite; #13509 open - #36696: own feature (config root for bunx / create); #13247, #5361 open - #36888 #39741 #39742 #39957 #40639: test rewrite without measurable gain - #37143: cause removed by #44919 - #37551: part of #40284 - #37644 #38365 #39206 #39936 #40855 #44031 #44425: not install (transpiler, `bun run`, `Bun.write`, pipe reader, repo-wide) - #38741: lockfile v2 has shipped - #38777: follows links out; main case gone with change 3 - #38810: turned down earlier; #10297 open - #38814: draft; rows grow per path - #39217: little demand - #39499: codemod for an unlanded change - #39724: refuses installable tarballs; see #41503 - #40045: 16 public JSON formats: own PR - #40073: test flag that hides a race - #40277: second store layout - #40284: stacked on branches that have not landed (needs new task, request and archive types in six other crates); follows separately - #40300: Windows bunx.exe identity; #40298 open - #40717: opposite of #36690 - #40753: loosens default-trust hardening - #41764: subset of #43322 - #41866: opposite of #41803 - #43104: needs a new `bun.lock` key - #43209: needs #43104's key - #43322: breaking; realpath per workspace - #44117: stacked on #44058 - #44621 #44809 #44813: draft - #44622: changes patch hash and cache names; #25932 open Obsolete (on main via the PR in brackets, or moot): #18582 (the Zig build is gone) #35542 (#38333) #35603 (#41854) #36352 (verdaccio is gone) #36670 (#38269) #36977 (#40010; `--tarball-dir`, #7956 stay open) #37126 (#40734) #37137 (#38269) #37250 (#38333) #37616 (#40734) #37925 (#37426) #38648 (#40063) #38671 (#39229) #38687 (#40406) #38776 (#38796) #38869 (#41302) #38891 (verdaccio is gone) #40766 (verdaccio is gone) #41667 (#42881) #### Fixed issues Fixes #2773. Fixes #4553. Fixes #4719. Fixes #4830. Fixes #4852. Fixes #5045. Fixes #5176. Fixes #5368. Fixes #5682. Fixes #5714. Fixes #6317. Fixes #6382. Fixes #6883. Fixes #7215. Fixes #7403. Fixes #7501. Fixes #7504. Fixes #7571. Fixes #8031. Fixes #8260. Fixes #8292. Fixes #9351. Fixes #10152. Fixes #10411. Fixes #10897. Fixes #11548. Fixes #12011. Fixes #12041. Fixes #12430. Fixes #12752. Fixes #13019. Fixes #13244. Fixes #13330. Fixes #13379. Fixes #13769. Fixes #13891. Fixes #14017. Fixes #14134. Fixes #14736. Fixes #15102. Fixes #15336. Fixes #15602. Fixes #15711. Fixes #16185. Fixes #16282. Fixes #17060. Fixes #17759. Fixes #18670. Fixes #18947. Fixes #19065. Fixes #19327. Fixes #20373. Fixes #20376. Fixes #20477. Fixes #20829. Fixes #21397. Fixes #22035. Fixes #22719. Fixes #23264. Fixes #23597. Fixes #24838. Fixes #25314. Fixes #26070. Fixes #26715. Fixes #27948. Fixes #28233. Fixes #28597. Fixes #28668. Fixes #28967. Fixes #29263. Fixes #29343. Fixes #30311. Fixes #30450. Fixes #30513. Fixes #30748. Fixes #31028. Fixes #31152. Fixes #31450. Fixes #31864. Fixes #33141. Fixes #33571. Fixes #33796. Fixes #33977. Fixes #36227. Fixes #36341. Fixes #36795. Fixes #36931. Fixes #36953. Fixes #36964. Fixes #37830. Fixes #38079. Fixes #38193. Fixes #38569. Fixes #38879. Fixes #38908. Fixes #38909. Fixes #40031. Fixes #40310. Fixes #40355. Fixes #40549. Fixes #40683. Fixes #41211. Fixes #41371. Fixes #41543. Fixes #41625. Fixes #42421. Fixes #42799. Fixes #42989. Fixes #43138. Fixes #43148. Fixes #43164. Fixes #43200. Fixes #43211. Fixes #43212. Fixes #43214. Fixes #43256. Fixes #43285. Fixes #43286. Fixes #43288. Fixes #43291. Fixes #43295. Fixes #43310. Fixes #43350. Fixes #43351. Fixes #43353. Fixes #43399. Fixes #43795. Fixes #43842. Fixes #43903. Fixes #43975. Fixes #44299. Fixes #44320. Fixes #44669. Expected fixed, first exercised by CI (Windows; close by hand): #28062 #11250 #11970 #29273 #10169 #22422 #27924 #31387 #11252 #28771 #44033 #12886 Covered by a PR taken in part (close by hand): #18611 #36386 #15516 #22689 #20673 #### Credits - @Jarred-Sumner: #39403 (the earlier fold), #20067, #31245, #31416, #33884, #37590, the design of #31447, part of #31327. - @MarshallOfSound: #40057, #40025, #40053, #40012, #40009. - @alii: #45052, #45051, #40423, #31481, #33279, helpers of #32022, half of #39505, review findings in #35259 #35468 #35586 #38047. - @dylan-conway: #19637 (opt-in), the order-dependent shapes of #36476 (tests here), the off-by-one fixes of #33113, the objection behind #37138. - @nikelborm: #41291. ### How did you verify your code works? - Suite (offline, root): main's tests on main 146 files, 9,099 pass, 306 fail; this branch 174 files, 16,067 pass, 42 fail; 6,277 passing tests are new, 268 that fail on main pass. Of the 42, 40 fail on main too; 1 needs Docker, 1 test deps. - Absorbed = a test here covers the claim, passes here, fails on main. Exceptions: test-only PRs, guards, performance PRs (measured); by reading only: #39640 #37335 (no test possible), #34175 (Docker), #38858 #39190 #41401 #41591 (flakes), #40447 #39740, the refactors. - Randomized differential: 600 generated projects (every dep kind, both linkers, both lockfile formats) through installs, edits, prune, patch, damage, kills; all output compared. First install succeeds: 545 -> 559. Projects that violate an invariant: | | main | this branch | |---|---|---| | repeated install rewrites files | 265 | 10 | | repeated install reports work | 101 | 2 | | repeated install changes the tree | 22 | 3 | | lockfile depends on manifest arrival order | 57 | 0 | | exit code depends on the linker | 20 | 0 | | writes outside the project | 21 | 0 | | declared dep cannot be resolved | 13 | 1 | | dep resolves to a wrong version | 4 | 0 | | frozen / relink / cold cache fails on its own lockfile | 7 | 0 | | package.json rewritten with the same bytes | 7 | 0 | | crash or hang | 3 | 0 | | dangling symlink | 2 | 0 | | bin not executable | 2 | 2 | | leftovers in the temp directory | 230 | 1 | | tree or exit code after kill + reinstall differs (timing) | 3 | 4 | - Credentials: 805 requests with main, this branch, npm 11.17.0: 534 as main; 170 wider (npm too in 140, 30 deliberate); 82 narrower; 19 another credential. 142 non-http(s) registry URLs x 16 routes: no request (main: 66). - Secrets: a secret in every input of 698 projects x 6,490 commands, not masked: data asked for on stdout, source excerpts under a diagnostic, echoed arguments. - Lockfiles: 90,000 mutated `bun.lockb` x 7 commands: no crash or hang. - Version picking: npm-pick-manifest 11.0.3 over 200,000 generated pairs: differs only for a dangling written `latest` and `^1.0.0-a.0`. - Debug + ASAN: 9 files (1,253 tests); 200 rounds of #31245's race. Two installs at once, 252 packages: tree right in 150 of 150 rounds, 2 of 300 exit 1 (main: 35 of 40 wrong, 69 of 80). - Hoisted thread pool vs main thread, one binary: 704 generated projects, 8,800 fuzz cases, CPU starvation x 4 backends, 432 injected I/O errors, thread and fd limits, script order: equal. Not verified: - Windows, macOS: CI only. Android (#39084): a seccomp filter on Linux, no device. - By script, no test: `--trust` with an alias, an aborted upgrade leaves no holes, two installs at once. overlayfs: a simulated `EXDEV`. - Known limits: change 19. Co-authored-by: nikelborm …

Jarred-Sumner · 2026-10-14T23:48:55Z

This is Claude (an AI assistant) writing on Jarred's behalf.

Included in #44968.

robobun assigned Jarred-Sumner Aug 15, 2026

github-actions Bot added the claude label Aug 15, 2026

claude Bot reviewed Aug 15, 2026

View reviewed changes

Comment thread src/install/yarn.rs Resolved

install: drop the unread yarn_idx from the yarn migration's VersionInfo

8cb4224