Issues

• bun check: false negative, no TS2540 for a readonly property in an intersection with a -readonly mapped type

  bugneeds triage
  oven-sh/bun#44966 · Filter by author l7aromeo opened on Oct 11, 2026
  1

• bun install: --concurrent-scripts is overridden by bunfig.toml

  oven-sh/bun#44961 · Filter by author everton-dgn opened on Oct 11, 2026

• bun check -b is slow when checking many projects that extend a large paths map

  bugneeds triage
  oven-sh/bun#44960 · Filter by author spanishpear opened on Oct 11, 2026

• bun check: false TS2322 assigning a generic-indexed mapped type through conditional types

  bugneeds triage
  oven-sh/bun#44956 · Filter by author sj-e2digital opened on Oct 11, 2026

• Indentation on URL is wrong

  bugneeds triage
  oven-sh/bun#44952 · Filter by author dragoncoder047 opened on Oct 11, 2026

• macOS: process.memoryUsage().rss and maxRSS miss memory reused after Bun.gc(true) (1.4.3 regression)

  oven-sh/bun#44951 · Filter by author metonym opened on Oct 11, 2026

• child_process treats process.env.PATH = "" as unset and still finds the binary; Node fails with ENOENT

  bugneeds triage
  oven-sh/bun#44948 · Filter by author bompus opened on Oct 10, 2026

• fs.readdirSync returns names in filesystem order; Node returns them sorted

  bugneeds triage
  oven-sh/bun#44947 · Filter by author bompus opened on Oct 10, 2026

• Linux Bash installer prefers .bash_profile, leaving Bun unavailable in new non-login terminals

  oven-sh/bun#44945 · Filter by author mahendrimd opened on Oct 10, 2026

• Macro call left unreplaced ("is not defined") when a module is reached twice in one static import graph (regression in 1.4.x)

  oven-sh/bun#44936 · Filter by author pedroknigge opened on Oct 10, 2026

• bun check: false TS2615 on a polymorphic-this mapped type after type-guard narrowing

  bugneeds triage
  oven-sh/bun#44934 · Filter by author clarkdave opened on Oct 10, 2026

• Bun 1.4.3 ESM bytecode optimizer aborts compiling @google-cloud/tasks 7.2.1 (2-line repro)

  oven-sh/bun#44926 · Filter by author mdnanocom opened on Oct 10, 2026

• node:http: res.end() after the client disconnects sets _header but leaves headersSent false (regression in 1.4.3, breaks Express res.download() / send)

  oven-sh/bun#44925 · Filter by author Luligu opened on Oct 10, 2026

• To send a redacted crash report to Bun's team, please file a GitHub issue using the link below: https://bun.report/1.4.3/w_1eecfd55AAyxumr

  oven-sh/bun#44922 · Filter by author maqingyun0819 opened on Oct 10, 2026

• How to use Bun through crates.io, similar to deno-runtime?

  oven-sh/bun#44920 · Filter by author ahaoboy opened on Oct 10, 2026

• Bug: Bun install.sh incorrectly identifies Android (Termux) as glibc, failing to run

  bugneeds triage
  oven-sh/bun#44918 · Filter by author wataamee777 opened on Oct 10, 2026

• MSW 3 native fetch mocks are bypassed on Bun 1.4.3 (socket-based FetchInterceptor)

  oven-sh/bun#44916 · Filter by author mdnanocom opened on Oct 10, 2026

• Class replaced by a class decorator: references inside its body still see the original class (regression in 1.4.3)

  bugneeds triage
  oven-sh/bun#44915 · Filter by author francoispluchino opened on Oct 10, 2026

• bun check reports TS2589 "Type instantiation is excessively deep" inside a class method where tsc 7.0.2 reports no errors

  bugtypes
  oven-sh/bun#44913 · Filter by author techvlad opened on Oct 10, 2026
  

• bun:ffi: a double passed to an i32/u32/i16 argument arrives as 0

  oven-sh/bun#44906 · Filter by author cmakafui opened on Oct 10, 2026

• bun test --isolate: main thread spins in ~ScriptExecutionContext destruction-observer loop during global swap (1.4.2, 1.4.3-canary)

  bugneeds triage
  oven-sh/bun#44898 · Filter by author mattwilkinsonn opened on Oct 10, 2026

• Single-threaded Map/linked-list churn is 1.44x slower than Node; parallel GC markers spend the time in futex and sched_yield

  bugneeds triage
  oven-sh/bun#44893 · Filter by author bompus opened on Oct 9, 2026
  1

• worker_threads: Worker.terminate() does not stop a worker that is running WebAssembly

  oven-sh/bun#44886 · Filter by author yayasoumah opened on Oct 9, 2026

• Objects in a sentinel-cleared linked list stay reachable after Bun.gc(true); Node collects them

  bugneeds triage
  oven-sh/bun#44884 · Filter by author bompus opened on Oct 9, 2026

• expect diff matchers ignore util.inspect.custom and serialise the whole object graph on failure

  oven-sh/bun#44880 · Filter by author ProxJ opened on Oct 9, 2026