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Illegally constructing a private/protected constructor from outside the class does not resolve to any for non-generic classes

Status: Open.

#3514 In microsoft/typescript-go;

· Bertie690 opened on Apr 22, 2026

[ServerErrors][TypeScript] main vs

Status: Open.

#3512 In microsoft/typescript-go;

· typescript-bot opened on Apr 22, 2026

Unicode escapes in identifier names now displayed as literal characters

Status: Open.

#3511 In microsoft/typescript-go;

· RyanCavanaugh opened on Apr 22, 2026

JS: {} == {} loose equality now also flagged with TS2839

Status: Open.

#3510 In microsoft/typescript-go;

· RyanCavanaugh opened on Apr 22, 2026

TS2690 (with "Did you mean 'P in K'?" mapped type suggestion) changed to TS2693 (generic "refers to a type, but is being used as a value") — mapped type suggestion lost

Status: Open.

#3509 In microsoft/typescript-go;

· RyanCavanaugh opened on Apr 22, 2026

Corsa no longer emits the TS-1 internal diagnostic about pre-emit/post-emit diagnostic count mismatches

Status: Open.

#3508 In microsoft/typescript-go;

· RyanCavanaugh opened on Apr 22, 2026

Verbose quick info crash when base type constructs an intersection

Crash

Status: Open.

#3506 In microsoft/typescript-go;

· DanielRosenwasser opened on Apr 22, 2026

Crash in declaration emit for JavaScript Test262 reserved-words

Crash

Status: Open.

#3504 In microsoft/typescript-go;

· turadg opened on Apr 22, 2026

tsgo rejects unknown JSX props that appear before a {...spread} and are accepted by tsc 6.0

Status: Open.

#3492 In microsoft/typescript-go;

· tomquist opened on Apr 22, 2026

Excess-property check fires on a nested object literal that is later assigned to an annotated return type, where tsc 6.0 does not

Status: Open.

#3491 In microsoft/typescript-go;

· tomquist opened on Apr 22, 2026

TS2411 reported on properties declared in node_modules .d.ts files (e.g. @types/jsdom DOMWindow), where tsc 6.0 silently allows them

Status: Open.

#3490 In microsoft/typescript-go;

· tomquist opened on Apr 22, 2026

Lowercase<"İ">` differs between tsgo and tsc (Go strings.ToLower vs JS String.prototype.toLowerCase)

Status: Open.

#3489 In microsoft/typescript-go;

· tomquist opened on Apr 22, 2026