2.15.0 (2023-07-18)

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Added

• LSP server: quick-lint-js can now receive configuration options via the
  initialize request. See LSP configuration
  documentation for
  details.
• x = x; now reports E0383. (Implemented by Austin Garcia.)
• ... without something following it now reports either E0708 ("unexpected
  '...'; expected expression") or E0709 ("expected variable name after
  '...'"). (Implemented by Isaac Nonato.)
• TypeScript support (still experimental):
  • namespace A.B {} syntax (with .) is now supported.
  • static public myMethod() {} now reports E0380 ("'public' access
    specifier must precede 'static'"). (Implemented by Leszek Nowicki.)
  • class C { \u{63}onstructor() {} } now reports E0381 ("Typescript does
    not allow keywords to contain escape sequence"). (Implemented by Jait
    Jacob.)
  • export declare is now supported.

Fixed

• Emacs (Flycheck): Using C-x C-; to comment a line now runs quick-lint-js
  (instead of leaving old diagnostics on the screen). This requires that you
  update your Emacs file: add new-line to the
  flycheck-check-syntax-automatically variable.
• export default abstract; is now parsed correctly as the export of a variable
  named abstract.
• export default async (newline) function f() {} is now parsed correctly as
  the export of a variable named async followed by the declaration of a
  non-async function named f.
• TypeScript support (still experimental):
  • E0034 ("redeclaration of variable") is no longer incorrectly reported
    in various cases, including the following:
    • class A {} namespace A {}
    • function f<T>(T) {}
    • type X = null; var X;
    • namespace ns{} namespace ns{}
  • export = a b now reports E0027 ("missing semicolon after statement").
  • module 'name' { import ... } no longer falsely reports E0362 ("cannot
    import a module from inside a 'declare namespace'").
  • module 'name'; no longer falsely reports E0356 ("missing body for
    TypeScript namespace").