Bun v1.1.33

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This release fixes 8 bugs including: JSX symbol collisions with imports, bun install slowdowns, skipping optional dependencies, optional dependency postinstall failures, and an assertion failure in the CSS parser.

To install Bun

curl

curl -fsSL https://bun.sh/install | bash

powershell

powershell -c "irm bun.sh/install.ps1|iex"

docker

docker run --rm --init --ulimit memlock=-1:-1 oven/bun

To upgrade Bun

Fixed: NPM_CONFIG_TOKEN environment variable

A bug reading the NPM_CONFIG_TOKEN environment variable due to lowercase letters was fixed. The diff was:

-  "NPM_CONFIG_token",
+  "NPM_CONFIG_TOKEN",

Reduced bun install max simultaneous connections

bun install was using 256 as the default maximum number of simultaneous network connections. Allowing this many connections at once could cause install slowdowns while fetching dependency tarballs and manifests. We've reduced the default to 64 with and without a proxy.

Fixed: optional = false in bunfig.toml

Our docs mention setting optional = false in bunfig.toml will skip optional dependencies during installs, but the implementation was missing. This is now working as expected thanks to @Eckhardt-D!

bunfig.toml

[install]
optional = false

Deleting optional dependencies on postinstall failure

When an optional dependency lifecycle script fails, bun will now ignore the error and continue with the installation. Additionally, the directory will be deleted from node_modules to prevent unexpected errors from using a half-installed package.

Fixed thanks to @dylan-conway!

Fixed: JSX symbol collisions

A bug was fixed where imports sharing the same name as a JSX symbol would cause bun to fail to include the JSX import source in the transpiled output, resulting in a reference error. For example, running tests in the hono repository:

bun test runtime-tests/bun/index.test.tsx


✗ JSX Middleware > Should return rendered HTML with Layout [0.12ms]
254 |     app.post('/about/some/thing', (c) => c.text('About Page 3tier'))
255 |     app.get('/bravo', (c) => c.html('Bravo Page'))
256 |     app.get('/Charlie', async (c, next) => {
257 |       c.setRenderer((content, head) => {
258 |         return c.html(
259 |           <html>
                ^
ReferenceError: Can't find variable: jsx
      at /Users/dylan/code/hono/runtime-tests/bun/index.test.tsx:259:11
      at /Users/dylan/code/hono/src/compose.ts:74:23

Fixed thanks to @snoglobe!

Fixed: assertion failure in the CSS parser

A hashing function in the CSS parser was casting a u64 to a u32 without telling zig safety checks to ignore truncating non-zero bits. This was fixed by using the @truncate zig builtin function.

Single quotes in module resolution error messages

When bun fails to resolve a module or package, the error message has been changed to use single quotes instead of double quotes. This fixes the optional-require package, which checks for the package name surrounded by single quotes.

index.js

require('does-not-exist');
// before: Cannot find package "does-not-exist" from "/path/to/index.js"
// after:  Cannot find package 'does-not-exist' from '/path/to/index.js'

Fixed thanks to @nektro!