2.12.0 (2023-03-08)

Downloads

Added

• array[i, j] now reports [E0450][] ("misleading use of ',' operator in
  index") (implemented by Yunus).
• while (x > 0, y > 0) now reports [E0451][] ("misleading use of ',' operator
  in conditional statement") (implemented by Yunus).
• Improvements to experimental TypeScript support:
  • Type variables such as Readonly<T> and IArguments are now recognized by
    the new typescript global group which is enabled by default.
  • declare is now supported.
  • The old-style module syntax for namespaces is now supported.

Fixed

• Fixed E0062 being reported when E0061 should be reported instead
  (fixed by Yunus).
• TypeScript namespace without a body now reports [E0356][] instead of
  crashing with an assertion failure.

Changed

• quick-lint-js' build system now optionally creates executes and runs them
  during the build. This behavior is controlled by the
  QUICK_LINT_JS_ENABLE_BUILD_TOOLS and QUICK_LINT_JS_USE_BUILD_TOOLS CMake
  variables.
  • For most people, QUICK_LINT_JS_ENABLE_BUILD_TOOLS is enabled by default
    and should work without extra configuration. No action is needed.
  • When cross-compiling, QUICK_LINT_JS_ENABLE_BUILD_TOOLS is disabled.
    Currently, QUICK_LINT_JS_ENABLE_BUILD_TOOLS is optional, so this should
    behave as before. However, in the future, either
    QUICK_LINT_JS_ENABLE_BUILD_TOOLS or QUICK_LINT_JS_USE_BUILD_TOOLS will
    be required.
  • If you need to configure the build tools specially, or if you want to build
    the build tools when cross-compiling, you must use the
    QUICK_LINT_JS_USE_BUILD_TOOLS CMake variable. See the cross-compiling
    documentation for instructions on using
    QUICK_LINT_JS_USE_BUILD_TOOLS correctly.

2.11.0 (2023-01-31)

Downloads

Changed

• Debian: The apt repository signing key expired on (2023-01-21). This causes
  apt-get update to fail. To fix this issue, add the latest signing key by
  running the following command:

  $ curl https://c.quick-lint-js.com/quick-lint-js-release.key | sudo apt-key add -
  

• LSP: The quick-lint-js LSP server no longer accepts JSON-RPC 2.0 batch
  messages. In practice, LSP clients don't use this feature, so this breaking
  change should do no harm. The LSP specification recently started
  prohibiting batch
  messages to
  match the status quo.

Added

• LSP: The LSP server now recognizes and lints TypeScript and TypeScript JSX
  code. However, the editor plugins currently do not use this feature by
  default.
• Vim: You can opt into TypeScript support. Search for EXPERIMENTAL in
  :help quick-lint-js. (Disabled by default.)
• VS Code: You can now opt into experimental TypeScript support. Set the
  quick-lint-js.experimental-typescript setting to true. (Disabled by
  default.)
• switch (c) { case A: break; case A: break; } now reports [E0347][]
  ("duplicated case clause in switch statement") (implemented by Rebraws).
• Translations: Brazilian Portuguese (implemented by Guilherme Vasconcelos).
• Mixing up the order of the export, async, and function keywords now
  reports [E0326][] or [E0327][] (implemented by Alek Lefebvre).
• TypeScript types like string? now report [E0348][] (implemented by
  Alek Lefebvre).
• Extra parentheses in function parameters now report [E0349][] (function
  parameter cannot be parenthesized) (implemented by Harshit Aghera).
• QuickJS's global variables are now recognized by default via the new quickjs
  global group (implemented by wagner riffel).
• E0190 is now reported if the literal is undefined, not only null,
  strings, and numbers (implemented by Harshit Aghera).

Fixed

• Variables can be named according to Unicode 15 (previously Unicode 14).
• In tracing files, the thread IDs in the file headers are now correct if
  tracing was enabled after startup.
• [E0325][] is now an error rather than a warning.
• 0o123.toString(), 0x123.toString(), 0b101.toString(), and
  0123.toString() no longer incorrectly report E0046, E0047, or
  E0048.
• Using a variable called async, then exporting something, no longer reports
  an unexpected token error (implemented by Alek Lefebvre).
• class C { x = 0, y; } now reports [E0330][] ("',' should be ';' instead")
  instead of E0057 ("use of undeclared variable: y") (implemented by
  clegoz).

2.10.0 (2022-10-14)

Downloads

Added

• [E0286][] and [E0287][] are now reported if the string or the value have extra
  parentheses (such as in (tag.toUpperCase()) === 'img') (implemented by
  Rebraws).
• myArray === [] now reports [E0344][] (implemented by Rebraws).
• myArray === [a, b, c] now reports [E0341][] (implemented by Rebraws).
• CLI: The new --language option lets you opt out of JSX
  support. With --language=javascript, quick-lint-js will report E0177 for
  any uses of JSX.
• You can opt into TypeScript support in the CLI using the
  --language=experimental-typescript option. TypeScript
  support is experimental, so there will be bugs (including crashes) in
  quick-lint-js. This option does not affect the LSP server.
• E0149 and E0150 are now reported for labelled statements too
  (implemented by Guilherme Vasconcelos).

Fixed

• static code blocks in classes no longer report E0242 ("TypeScript static
  blocks are not supported in JavaScript").
• When writing implements in JavaScript code, quick-lint-js will no longer
  possibly report E0246 in addition to E0247. quick-lint-js will now
  only report E0247.
• { x: y = z } in an expression no longer incorrectly reports E0253.
• { x: y = z } now reports errors such as E0057 for z. (z used to be
  completely ignored during variable analysis.)
• { x = z } now only reports E0253, instead of also reporting E0059
  for x.
• class C { field!; } now only reports E0239 (TypeScript assignment-asserted
  fields are not supported in JavaScript) instead of both E0239 and
  E0236 (assignment-asserted field must have a type annotation).

Changed

• [E0707][] has been merged into E0069.
• E0271 has been merged into E0270.
• [E0279][] has been merged into E0278.

2.9.0 (2022-09-05)

Downloads

Added

• tag.toUpperCase() === 'img' now reports E0286, and
  tag.toLowerCase() === 'IMG' now reports E0287 (implemented by Roland
  Strasser).

Fixed

• (param) { body(); } now reports E0176 ('missing arrow operator for arrow
  function') (implemented by Roland Strasser).
• quick-lint-js no longer crashes if a TypeScript type alias appears in a
  JavaScript file.
• quick-lint-js now recognizes the jest global variable from the Jest test
  framework. This suppresses undesired E0057 ("use of undeclared variable")
  warnings.
• await () => x no longer reports x as undeclared multiple times. (E0178
  is still reported, as intended.)
• Defining a global variable in quick-lint-js.config which is already declared
  by default now always changes the shadowable and writable settings.
• await () => await () => ... no longer slows down linting and consumes a lot
  of memory.

2.8.0 (2022-07-25)

Downloads

Added

• await await f() now reports E0266 ("redundant await") (implemented by
  clegoz).
• CLI: Misuse of --vim-file-bufnr now reports warnings (implemented by Roland
  Strasser).

Fixed

• LSP, VS Code: quick-lint-js now correctly handles merging lines containing
  non-ASCII with lines containing ASCII. This fixes spurious diagnostics. Thanks
  to T0x3139 and mirabellier for reporting and helping fix this bug.
• quick-lint-js now recognizes Bun's global variables, including Bun and
  bunJSX. This suppresses undesired E0057 ("use of undeclared variable")
  warnings.

Removed

• The en@loud translation has been removed. It was only used for testing.

Changed

• Debian/Ubuntu: Our Debian/Ubuntu package now might not work on Ubuntu 16.04 or
  Debian 9. The following Debian-based Linux distributions are tested:
  • Debian 10 Bullseye and 11 Buster
  • PureOS Amber
  • Ubuntu 18.04 Bionic and 20.04 Focal
• Manual: Our Linux x86_64/amd64 pre-built binaries now might not work on Ubuntu
  16.04 or similarly old distributions. The following Linux distributions are
  tested:
  • Arch Linux
  • Debian 10 Bullseye and 11 Buster
  • Fedora 35 and 36
  • Ubuntu 18.04 Bionic and 20.04 Focal

[E03...

2.7.0 (2022-07-13)

Downloads

Added

• const o = {k = v}; now reports E0253 ("use ':' instead of '=' in object
  literals").
• --snarky is now even snarkier.
• LSP server: The new quick-lint-js.tracing-directory LSP configuration item
  can be set to a path where quick-lint-js will log LSP protocol traffic. This
  keylogger option can be used by quick-lint-js contributors to investigate
  bugs. This new option is disabled by default.

Fixed

• quick-lint-js no longer fails to build with simdjson version 2.2.0.
• Declaring a TypeScript interface with the same name as a generic parameter no
  longer crashes quick-lint-js.

2.6.0 (2022-06-15)

Downloads

Added

• DOMError, MutationEvent, and some other browser global variables are now
  recognized.
• New global group: web-worker (enabled by default)
• The importScripts global function is now recognized by default.
• Forgetting a semicolon between class fields now reports "missing semicolon
  after field" (E0223) instead of "missing semicolon after statement"
  (E0027).
• Using some TypeScript features, such as class generics and interfaces, in
  JavaScript code is now reported with a friendly error message.
• E0199 ("unclosed class") is now reported in more scenarios.
• static code blocks in classes are now supported.

Fixed

• [E0707][] now only complains about classes named await, not any class inside
  an async function.
• E0054 is no longer incorrectly reported for class properties named
  implements, interface, package, private, protected, or public.
• In statement contexts, async followed by a newline followed by function is
  no longer falsely interpreted as an async function. It is instead interpreted
  as the use of a variable called async followed by a non-async function, per
  the language standard.
• ((x)) => {} no longer crashes the parser with an assertion failure.
• Tests now pass if the user's locale is Italian (it_IT.utf8 on Linux).
• The FreeBSD build now succeeds and tests pass.

2.5.0 (2022-05-23)

Downloads

Added

• E0144 and E0145 are now reported for implements, interface,
  package, private, protected, and public (in addition to other
  keywords).
• E0086 is now reported in more cases, such as when the deleted variable was
  declared outside the function containing the delete expression.
• Classes named await in async functions now report [E0707][] (implemented
  by ooblegork).
• Integer literals which are silently rounded at run-time now report E0212
  (implemented by Rob Miner).
• VS Code: The new quick-lint-js.tracing setting can be set to "verbose" to
  log changes to documents. This keylogger option can be used by quick-lint-js
  contributors to investigate bugs. This new option is disabled by default.
• CLI: The --snarky option makes error messages more interesting. Implemented
  by david doroz.

Fixed

• E0150 no longer crashes quick-lint-js when using a German (de) locale.
  (Fixed by Nico Sonack.)
• The npm package now includes copyright files listing software licenses and
  copyright notices.
• E0086 is no longer falsely reported in some cases.
• VS Code (Windows x64): When the extension is first loaded, and a file has
  errors, quick-lint-js no longer reports the first error always on the first
  line. (The issue was a compiler
  bug
  which we worked around.)
• quick-lint-js no longer creates and writes messages to /tmp/qljs.log.

Changed

• This release is signed with a new GPG key.
  • Old fingerprint: 0327DE8F9CEF499851D19F6ED20BA9DCCF0E9D20
  • New fingerprint: A6851D57A65803E98C05DA01C08A7BC89CA2F557

2.4.2 (2022-04-22)

Downloads

Changed

• The name of package installed by the MSIX installer has changed. It used to be
  "fa6b940b-8f96-4b46-8e21-703a63133e06" but now it is
  "quick-lint.quick-lint-js". If you installed quick-lint-js using a prior
  version of the MSIX installer, Windows won't let you upgrade. Uninstall the
  old version of quick-lint-js before installing a new version.

[E...

2.4.1 (2022-04-19)

Downloads

Fixed

• When using the de, fr_FR, or sv_SV locale, some error messages are no
  longer blank.

Changed

• The Windows MSIX installer is now signed with a Microsoft-trusted certificate.
  If you installed quick-lint-js using a prior version of the MSIX installer,
  Windows won't let you upgrade. Uninstall the old version of quick-lint-js
  before installing a new version.
• The Windows executable is now signed with a Microsoft-trusted certificate.

...