41 Pull requests merged by 10 people

• Ensure deep cloned AST nodes have synthetic positions

  #1174 merged Jun 12, 2025

• Fix nil panic on heritage clause in grammar checks

  #1173 merged Jun 12, 2025

• Add this/satisfies tag

  #1157 merged Jun 12, 2025

• Port TypeScript PR #60262: Include non-enumerable keys in __importStar helper

  #1141 merged Jun 12, 2025

• Port TypeScript PR #59767: Rewrite relative import extensions with flag

  #1138 merged Jun 12, 2025

• Ensure pool mutex is locked in GetAllCheckers

  #1169 merged Jun 12, 2025

• Fix handling of non-file URIs

  #1167 merged Jun 11, 2025

• Port JSX Emit

  #1159 merged Jun 11, 2025

• Cache CompilerOptions.SourceFileAffecting

  #1156 merged Jun 11, 2025

• Add the 5 modifier jsdoc tags

  #927 merged Jun 11, 2025

• Generate LSP request IDs atomically

  #1162 merged Jun 11, 2025

• Remove unused JSGlobalAugmentations

  #1155 merged Jun 10, 2025

• Project references in a program

  #1078 merged Jun 10, 2025

• Improve memory usage of formatter

  #1107 merged Jun 10, 2025

• Follow up from the implements/extends PR

  #1154 merged Jun 10, 2025

• Don't lint on macOS in CI

  #1153 merged Jun 10, 2025

• Fix data race via RequiresAddingImplicitUndefined

  #1152 merged Jun 10, 2025

• Do not create SourceFiles for non-existent files

  #1148 merged Jun 10, 2025

• Add @implements/@extends tags

  #1111 merged Jun 10, 2025

• Make anyFunctionType a subtype of all function types

  #1149 merged Jun 10, 2025

• Implement externalModuleIndicator

  #979 merged Jun 10, 2025

• Move set and multimap to collections

  #1150 merged Jun 10, 2025

• Preinstall @playwright/mcp for Copilot

  #1134 merged Jun 10, 2025

• Improve type discrimination algorithm

  #1085 merged Jun 9, 2025

• Use GetResolveJsonModule instead of just ResolveJsonModule in fileloader

  #1110 merged Jun 9, 2025

• Type nodes for JSDoc

  #1013 merged Jun 9, 2025

• Include full diagnostic chains in LSP diagnostics

  #1105 merged Jun 9, 2025

• Mark CompilerOptions as noCopy

  #1106 merged Jun 9, 2025

• Fix error chaining in getIterationTypesOfIterableSlow

  #1091 merged Jun 9, 2025

• Add copilot-setup-steps

  #1089 merged Jun 6, 2025

• Fix generating module specifiers verbatim from exports

  #1087 merged Jun 6, 2025

• noslash

  #991 merged Jun 6, 2025

• Port "Error on too many parameters for iterator method"

  #1059 merged Jun 6, 2025

• Move version from source file to document registry

  #1075 merged Jun 6, 2025

• Port return conditional expression checking improvements

  #1072 merged Jun 6, 2025

• Format all generated files

  #1073 merged Jun 5, 2025

• Ensure LSP readLoop doesn't block shutdown

  #1074 merged Jun 5, 2025

• Report iteration errors on all error nodes

  #1061 merged Jun 5, 2025

• Port "Check if switch statements are exhaustive when their expressions is generic with a literal type constraint"

  #1071 merged Jun 5, 2025

• Measure config parse / file scan time, actual total time

  #1069 merged Jun 5, 2025

• findAllReferences inital port

  #882 merged Jun 5, 2025

15 Pull requests opened by 7 people

• Exit LSP process if parent process stops existing

  #1076 opened Jun 6, 2025

• Port "Fix `getEffectiveCheckNode`"

  #1083 opened Jun 6, 2025

• [WIP] Emitting Declarations for React Components requires type annotation

  #1086 opened Jun 6, 2025

• Add handling for 2-3 invalid overload candidates

  #1098 opened Jun 7, 2025

• Type width in error messages

  #1099 opened Jun 8, 2025

• Bump github/codeql-action from 3.28.18 to 3.28.19 in the github-actions group across 1 directory

  #1102 opened Jun 9, 2025

• Add support for JSDoc @implements tag in reparser

  #1104 opened Jun 9, 2025

• Attempt to fix commonjs module resolution weirdness

  #1135 opened Jun 9, 2025

• [WIP] Port TypeScript PR #60083: Don't issue implicit any when obtaining the implied type for a binding pattern

  #1136 opened Jun 10, 2025

• [WIP] Port TypeScript PR #60303: Fix template string escaping

  #1142 opened Jun 10, 2025

• [WIP] Port TypeScript PR #60304: More rigorous ASI prevention when emitting `return`/`yield`

  #1143 opened Jun 10, 2025

• [WIP] Port TypeScript PR #59675: fix(59397): JsDoc is missing/duplicated in declarations for overloads declared in classes declared in functions

  #1144 opened Jun 10, 2025

• Simplify parser options passing, eliminate ParseJSONText

  #1158 opened Jun 10, 2025

• Bump brace-expansion from 2.0.1 to 2.0.2

  #1170 opened Jun 12, 2025

• add noslash range and object marker parsing

  #1175 opened Jun 12, 2025

17 Issues closed by 7 people

• Panic in `SkipTriviaEx` when printing a type predicate from another file with declaration maps enabled

  #1092 closed Jun 12, 2025

• Panic in checkGrammarClassLikeDeclaration on vscode

  #1171 closed Jun 12, 2025

• Port TypeScript PR #60262: Include non-enumerable keys in __importStar helper

  #1119 closed Jun 12, 2025

• Port TypeScript PR #59767: Rewrite relative import extensions with flag

  #1113 closed Jun 12, 2025

• Data race when handing out checkers

  #1168 closed Jun 12, 2025

• invalid URL escape panic when creating new file in WSL

  #1096 closed Jun 11, 2025

• Data race in RequiresAddingImplicitUndefined

  #1151 closed Jun 10, 2025

• Discrepancy inferring function parameter from context

  #1016 closed Jun 10, 2025

• Port TypeScript PR #60238: Fix prioritization of `paths` specifiers over node_modules package specifiers

  #1127 closed Jun 10, 2025

• Port TypeScript PR #58816: Use `canHaveFlowNode` in `checkIfExpressionRefinesParameter`

  #1129 closed Jun 10, 2025

• Determine root cause of this call stack

  #1108 closed Jun 10, 2025

• Discrepancies in behavior of spread of union type

  #1020 closed Jun 9, 2025

• resolveJsonModule doesn't default to true with moduleResolution bundler

  #845 closed Jun 9, 2025

• launch vscode extension: failed too many files

  #630 closed Jun 9, 2025

• TS Errors on different lines - return with ternary

  #984 closed Jun 6, 2025

• Inconsistent namespace output between tsgo and tsc

  #1081 closed Jun 6, 2025

• Error in exhaustive switch over generic argument limited to specific literal strings

  #986 closed Jun 5, 2025

26 Issues opened by 18 people

• New TS2313 error compared to 5.8.3

  #1172 opened Jun 12, 2025

• Crash when compiling @types/google.maps

  #1166 opened Jun 11, 2025

• NX monorepo with paths do not work out of box or with modifications

  #1165 opened Jun 11, 2025

• Change in type inference for `Object.entries()`

  #1164 opened Jun 11, 2025

• Data race in watchedFiles update

  #1163 opened Jun 11, 2025

• Data race in ScriptInfo between setText and Version

  #1161 opened Jun 11, 2025

• concurrent map read and map write in getTypeOnlyAliasDeclarationEx

  #1160 opened Jun 11, 2025

• vs code typescript go extension taking long time to typecheck for large monorepo

  #1147 opened Jun 10, 2025

• fatal error: concurrent map writes from completions

  #1133 opened Jun 9, 2025

• Port TypeScript PR #59675: fix(59397): JsDoc is missing/duplicated in declarations for overloads declared in classes declared in functions

  #1126 opened Jun 9, 2025

• Port TypeScript PR #60304: More rigorous ASI prevention when emitting `return`/`yield`

  #1123 opened Jun 9, 2025

• Port TypeScript PR #60303: Fix template string escaping

  #1121 opened Jun 9, 2025

• Port TypeScript PR #60195: Assume that type node annotations resolving to error types can be reused

  #1118 opened Jun 9, 2025

• Port TypeScript PR #60083: Don't issue implicit any when obtaining the implied type for a binding pattern

  #1116 opened Jun 9, 2025

• Port TypeScript PR #59282: Extract node type printer

  #1115 opened Jun 9, 2025

• Go-to-def on object literal shorthand misbehaves

  #1112 opened Jun 9, 2025

• Support jsdoc `@implements` tag

  #1103 opened Jun 9, 2025

• runtime error: slice bounds out of range [:-1]

  #1101 opened Jun 9, 2025

• tsgo regression: TS2590: Expression produces a union type that is too complex to represent.

  #1100 opened Jun 8, 2025

• No error when assigning to getter-only static class property from another file

  #1094 opened Jun 7, 2025

• Using a class based react component imported from a `jsx` files produce errors

  #1090 opened Jun 6, 2025

• Inconsistent behavior between `tsc` and `tsgo` for `@ts-expect-error` directive placement

  #1088 opened Jun 6, 2025

• tsgo preview: fails to index and offer import suggestions

  #1084 opened Jun 6, 2025

• Deduplicate doubly-installed packages

  #1080 opened Jun 6, 2025

• Erroring on first compilation, subsequent compilation is successful

  #1079 opened Jun 6, 2025

• [lsp][bug] find-all references crashes with concurrent map read/write error

  #1077 opened Jun 6, 2025

21 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• Add {}/class-expression expandos

  #885 commented on Jun 11, 2025 • 2 new comments

• Error 2742 The inferred type of xxx cannot be named

  #1034 commented on Jun 11, 2025 • 0 new comments

• Errors in @types/jsdom, @sinclair/typebox

  #929 commented on Jun 10, 2025 • 0 new comments

• Multiple angular class component files panic on AST Node Expression

  #1024 commented on Jun 9, 2025 • 0 new comments

• Solution style config not supported

  #1023 commented on Jun 9, 2025 • 0 new comments

• tsgo fails to resolve namespace symbols in non-extends contexts across files

  #961 commented on Jun 9, 2025 • 0 new comments

• tsgo reports deep type errors in @sinclair/typebox and mongoose that tsc handles without issue

  #948 commented on Jun 9, 2025 • 0 new comments

• `tsc`-like commands not working as expected in `tsgo` (e.g. --watch mode fails)

  #937 commented on Jun 9, 2025 • 0 new comments

• `// @ts-expect-error` has no effect

  #934 commented on Jun 9, 2025 • 0 new comments

• [bug/lsp]panic: vfs: path "" is not absolute

  #670 commented on Jun 9, 2025 • 0 new comments

• program: `<reference no-default-lib="true"/>` is ignored

  #300 commented on Jun 9, 2025 • 0 new comments

• Inconsistency involving discriminated union and flatMap

  #1057 commented on Jun 9, 2025 • 0 new comments

• Import behavior mismatch from typescript 5 (bwip-js)

  #974 commented on Jun 8, 2025 • 0 new comments

• noEmit slow on Mac M2

  #1062 commented on Jun 6, 2025 • 0 new comments

• Emitting Declarations for React Components requires type annotation

  #1011 commented on Jun 6, 2025 • 0 new comments

• Discrepancy inferring widened string type from context

  #1017 commented on Jun 6, 2025 • 0 new comments

• TODO: Implement project references

  #529 commented on Jun 6, 2025 • 0 new comments

• TS SERVER Crash (Vscode preview extension) Memory usage

  #985 commented on Jun 6, 2025 • 0 new comments

• typeof json file with import panic: Unhandled case in Node.Expression (only occurs when using VSCode LSP, tsgo CLI works fine)

  #913 commented on Jun 6, 2025 • 0 new comments

• Crash on parsing webpack dependency (neo-async)

  #898 commented on Jun 6, 2025 • 0 new comments

• Some dependency JS files appear to be erroneously typechecked

  #931 commented on Jun 6, 2025 • 0 new comments