chore: sync upstream oven-sh/bun main (2026-10-18)

.claude/skills/implementing-jsc-classes-rust/SKILL.md

@@ -7,6 +7,8 @@ description: Creates JavaScript classes using Bun's Rust bindings generator (.cl
 
 Bridge JavaScript and Rust through `.classes.ts` definitions and Rust implementations.
 
+`src/codegen/bindgen.ts` (`*.bind.ts`, `docs/project/bindgen.mdx`) is replacing this generator: typed arguments, and the struct stored inside the JS object. Use it for a class whose struct only the JS object owns. It does not do ref-counted or shared structs, `hasPendingActivity`, `estimatedSize` or writing to a cached getter's slot yet.
+
 ## Architecture
 
 1. **JavaScript Interface Definition** (`.classes.ts` files)
@@ -18,7 +20,7 @@ Bridge JavaScript and Rust through `.classes.ts` definitions and Rust implementa
 ```typescript
 export default [
   define({
-    name: "Glob",
+    name: "Matcher",
     construct: true,
     finalize: true,
     hasPendingActivity: true,
@@ -45,16 +47,16 @@ use bun_jsc::{CallFrame, JSGlobalObject, JSValue, JsResult};
 use std::sync::atomic::{AtomicUsize, Ordering};
 
 #[bun_jsc::JsClass]
-pub struct Glob {
+pub struct Matcher {
     pattern: Box<[u8]>,
     has_pending_activity: AtomicUsize,
 }
 
-impl Glob {
-    pub fn constructor(global: &JSGlobalObject, frame: &CallFrame) -> JsResult<Box<Glob>> {
+impl Matcher {
+    pub fn constructor(global: &JSGlobalObject, frame: &CallFrame) -> JsResult<Box<Matcher>> {
         let arg = frame.argument(0);
         let pattern = bun_core::String::from_js(arg, global)?.to_utf8_bytes().into();
-        Ok(Box::new(Glob { pattern, has_pending_activity: AtomicUsize::new(0) }))
+        Ok(Box::new(Matcher { pattern, has_pending_activity: AtomicUsize::new(0) }))
     }
 
     #[bun_jsc::host_fn(method)]
@@ -88,7 +90,7 @@ A missing or mis-typed hook is a **compile error** in `cargo check -p bun_runtim
 The codegen also emits a `js_$T` module with the cached-value accessors. Re-export it when you need `*_set_cached` / `*_get_cached` or `detach_ptr`:
 
 ```rust
-pub use crate::generated_classes::js_Glob as js;
+pub use crate::generated_classes::js_Image as js;
 // or
 bun_jsc::impl_js_class_via_generated!(Archive => crate::generated_classes::js_Archive);
 ```
@@ -124,7 +126,7 @@ Never store raw `JSValue` in a struct field. Declare a slot in `.classes.ts` (`v
 
 ## Reference implementations
 
-- `src/runtime/api/glob.rs` + `Glob.classes.ts` — constructor, methods, `hasPendingActivity`, default finalize
+- `src/runtime/api/Shell.classes.ts` — constructor, methods, `hasPendingActivity`
 - `src/runtime/api/cron.rs` + `cron.classes.ts` — `noConstructor`, cached getter, `values: [...]`, custom finalize
 - `src/runtime/image/Image.rs:56` — the `pub use crate::generated_classes::js_Image as js;` one-liner
 - `src/jsc/host_fn.rs` — the host-fn adapters the codegen dispatches through

.github/workflows/bun-types.yml

@@ -11,12 +11,16 @@ on:
       - "packages/bun-types/**"
       - "test/integration/bun-types/**"
       - "src/cli/init/tsconfig.default.json"
+      - "src/**/*.bind.ts"
+      - "src/codegen/**"
       - ".github/workflows/bun-types.yml"
   pull_request:
     paths:
       - "packages/bun-types/**"
       - "test/integration/bun-types/**"
       - "src/cli/init/tsconfig.default.json"
+      - "src/**/*.bind.ts"
+      - "src/codegen/**"
       - ".github/workflows/bun-types.yml"
 
 env:

.github/workflows/rust-lints.yml

@@ -10,6 +10,7 @@ on:
       - "src/**/*.rs"
       - "src/**/Cargo.toml"
       - "src/**/*.classes.ts"
+      - "src/**/*.bind.ts"
       - "src/codegen/**"
       - "scripts/build/**"
       - "scripts/build.ts"
@@ -132,7 +133,7 @@ jobs:
       # The pinned commit of https://github.com/scarletindustries/mordant.
       # Bumping it is a PR of its own, where whatever the new revision finds
       # gets fixed or added to mordant-baseline.toml.
-      MORDANT_REV: c5e56d0d9ca6e2adbb3488b7677353f26cd99ba8
+      MORDANT_REV: 564c8da5cb0d4fc9b1717b4b42e6e60dbeef237b
       # The nightly in mordant's rust-toolchain file at MORDANT_REV. mordant is
       # built with it and links its rustc, so it is also the compiler that
       # checks this workspace while the lints run, and it must still be able

.prettierrc

@@ -20,12 +20,6 @@
         "printWidth": 80
       }
     },
-    {
-      "files": ["src/codegen/bindgenv2/**/*.ts", "*.bindv2.ts"],
-      "options": {
-        "printWidth": 100
-      }
-    },
     {
       "files": ["src/runtime/cli/init/**"],
       "options": {

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Sync oven-sh/bun through `ad4089bf49d9f4c3ab7c8d95a58f3e0f0f186054`, including lint, format, binding, WebSocket and SQL updates, while retaining the fork runtime and CI contracts.
+
 - Share identical `node:vm` script and compiled-function source buffers and source-map URI strings through a bounded per-VM weak index, including after compilation-cache eviction.
 
 - Honor `BUN_FEATURE_FLAG_DISABLE_SOURCE_MAPS` on transpiler-cache hits and prevent startup crashes from cached modules without maps. Adapts empty-map validation from [oven-sh/bun#42412](https://github.com/oven-sh/bun/pull/42412); thanks @robobun.

Cargo.toml

@@ -8,7 +8,7 @@
   "src/collections",
   "src/css",
   "src/errno",
   "src/glob",
   "src/http",
   "src/install",
   "src/install/windows-shim",
@@ -32,6 +32,8 @@
   "src/lint/unicorn",
   "src/lint/react",
   "src/lint/jest",
+  "src/lint/json",
+  "src/lint/markdown",
   "src/lint/graph",
   "src/lint/react_compiler",
   "src/lint/driver",
@@ -397,6 +399,8 @@
 bun_lint_unicorn = { path = "src/lint/unicorn" }
 bun_lint_react = { path = "src/lint/react" }
 bun_lint_jest = { path = "src/lint/jest" }
+bun_lint_json = { path = "src/lint/json" }
+bun_lint_markdown = { path = "src/lint/markdown" }
 bun_lint_graph = { path = "src/lint/graph" }
 bun_lint_react_compiler = { path = "src/lint/react_compiler" }
 bun_format = { path = "src/format" }