---
title: Configure git to diff Bun's lockb lockfile
sidebarTitle: Configure git to diff Bun's lockfile
mode: center
---

<Note>
  Bun v1.1.39 introduced `bun.lock`, a JSONC formatted lockfile. `bun.lock` is human-readable and git-diffable without
  configuration, at no cost to performance. In 1.2.0+ it is the default format for new projects. See [the lockfile
  docs](/pm/lockfile#text-based-lockfile).
</Note>

---

To teach `git` how to generate a human-readable diff of Bun's binary lockfile format (`.lockb`), add the following to your local or global `.gitattributes` file:

```js gitattributes icon="file-code"
*.lockb binary diff=lockb
```

---

Then add the following to your local git config:

```sh terminal icon="terminal"
git config diff.lockb.textconv bun
git config diff.lockb.binary true
```

---

To configure this for every repository, add the following to your global git config:

```sh terminal icon="terminal"
git config --global diff.lockb.textconv bun
git config --global diff.lockb.binary true
```

---

## How this works

- `textconv` tells git to run bun on the file before diffing
- `binary` tells git to treat the file as binary (so it doesn't try to diff it line-by-line)

Running Bun on the lockfile (`bun ./bun.lockb`) prints a human-readable version of it, which `git diff` then diffs.
