Set default `types` array to `[]`; support `"*"` wildcard by RyanCavanaugh · Pull Request #63054 · microsoft/TypeScript

RyanCavanaugh · 2026-01-28T00:42:02Z

Redo of #63031 with slightly more manageable commit history

typescript-bot · 2026-01-28T00:42:16Z

Looks like you're introducing a change to the public API surface area. If this includes breaking changes, please document them on our wiki's API Breaking Changes page.

Also, please make sure @DanielRosenwasser and @RyanCavanaugh are aware of the changes, just as a heads up.

Copilot

Pull request overview

This pull request implements a breaking change to TypeScript's types compiler option, setting its default to an empty array ([]) instead of automatically including all packages from node_modules/@types. A wildcard ("*") is introduced to allow users to opt into the old "include all" behavior for backward compatibility.

Changes:

Modified getAutomaticTypeDirectiveNames to return [] by default when types is undefined and support "*" wildcard expansion
Added usesWildcardTypes helper function to centralize wildcard detection logic
Updated error messages to suggest adding types to the types field in tsconfig when wildcard is not present
Updated 29+ tests to explicitly use "types": ["*"] where automatic type discovery was relied upon

Reviewed changes

Copilot reviewed 171 out of 265 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/compiler/moduleNameResolver.ts	Core logic: changes getAutomaticTypeDirectiveNames to default to `[]` and support wildcard expansion
src/compiler/utilities.ts	Adds usesWildcardTypes helper to check if types array includes "*"
src/compiler/checker.ts	Updates error messages to conditionally suggest adding types to tsconfig
src/compiler/programDiagnostics.ts	Updates file include diagnostics to handle wildcard
src/compiler/watch.ts	Updates watch mode file include reasons for wildcard
src/jsTyping/jsTyping.ts	Updates type discovery to use wildcard check
tests/cases/fourslash/server/*	Adds `"types": ["*"]` to tests requiring auto-discovery
tests/cases/conformance/*	Adds `// @types: *` directive to compiler tests
tests/baselines/reference/*	Updates baselines for new error messages and behavior

jakebailey

Seems like some tests are still left.

I do also wonder if we need to be forcing this on for inferred projects in tsserver...

...rence/tsbuild/moduleResolution/impliedNodeFormat-differs-between-projects-for-shared-file.js

...rence-resolution-uses-correct-options-for-different-resolution-options-referenced-project.js

.../incremental/react-jsx-emit-mode-with-no-backing-types-found-doesn't-crash-under---strict.js

...-something-in-node_modules-or-@types-when-there-is-no-notification-from-fs-for-index-file.js

...reference/tscWatch/resolutionCache/works-when-module-resolution-changes-to-ambient-module.js

...ce/tsserver/autoImportProvider/Auto-importable-file-is-in-inferred-project-until-imported.js

jakebailey · 2026-01-28T01:51:33Z

@typescript-bot test top800

typescript-bot · 2026-01-28T01:51:37Z

Starting jobs; this comment will be updated as builds start and complete.

Command	Status	Results
`test top800`	✅ Started	👀 Results

typescript-bot · 2026-01-28T04:08:18Z

@jakebailey Here are the results of running the top 800 repos with tsc comparing main and refs/pull/63054/merge:

Something interesting changed - please have a look.

Details

47ng/nuqs

12 of 14 projects failed to build with the old tsc and were ignored

packages/scripts/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.

actions/starter-workflows

script/validate-data/tsconfig.json

error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- script/validate-data/index.ts#L2
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- script/validate-data/index.ts#L4
error TS2550: Property 'includes' does not exist on type 'string[]'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2016' or later.
- script/validate-data/index.ts#L53
error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- script/validate-data/index.ts#L130

script/sync-ghes/tsconfig.json

error TS2307: Cannot find module 'child_process' or its corresponding type declarations.
- script/sync-ghes/exec.ts#L1
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- script/sync-ghes/index.ts#L2
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- script/sync-ghes/index.ts#L4
error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- script/sync-ghes/index.ts#L53
- script/sync-ghes/index.ts#L131

AIsouler/GKD\_subscription

tsconfig.json

error TS2307: Cannot find module 'node:fs/promises' or its corresponding type declarations.
- scripts/updateReadMeMd.ts#L1
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2339: Property 'dirname' does not exist on type 'ImportMeta'.
- src/subscription.ts#L7

APIs-guru/graphql-voyager

2 of 4 projects failed to build with the old tsc and were ignored

tsconfig.build.json

error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'node:fs' or its corresponding type declarations.
- src/middleware/render-voyager-page.ts#L1

assistant-ui/assistant-ui

34 of 41 projects failed to build with the old tsc and were ignored

packages/tap/tsconfig.json

error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/tap/src/__tests__/strictmode/react-strictmode-rerender-sources.test.tsx#L353
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/tap/src/core/env.ts#L2
- packages/tap/src/core/env.ts#L3

packages/styles/tsconfig.json

error TS2307: Cannot find module 'node:child_process' or its corresponding type declarations.
- packages/styles/scripts/build.ts#L1
error TS2307: Cannot find module 'node:fs' or its corresponding type declarations.
- packages/styles/scripts/build.ts#L2
- packages/styles/scripts/sync-styles.ts#L3
error TS2307: Cannot find module 'node:path' or its corresponding type declarations.
- packages/styles/scripts/build.ts#L3
- packages/styles/scripts/sync-styles.ts#L4
error TS2307: Cannot find module 'node:url' or its corresponding type declarations.
- packages/styles/scripts/sync-styles.ts#L7
error TS7006: Parameter 'f' implicitly has an 'any' type.
- packages/styles/scripts/sync-styles.ts#L75

barbajs/barba

tsconfig.json

error TS2339: Property 'captureStackTrace' does not exist on type 'ErrorConstructor'.
- packages/core/src/modules/Error.ts#L14
- packages/core/src/modules/Error.ts#L15
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- packages/core/src/utils/dom.ts#L15

caorushizi/mediago

8 of 9 projects failed to build with the old tsc and were ignored

packages/shared/common/tsconfig.json

error TS2552: Cannot find name 'AbortController'. Did you mean 'Controller'?
- packages/shared/common/src/types/index.ts#L79
- packages/shared/common/src/types/index.ts#L122
error TS2552: Cannot find name 'URL'. Did you mean 'url'?
- packages/shared/common/src/utils/index.ts#L8

Chocobozzz/PeerTube

10 of 13 projects failed to build with the old tsc and were ignored

scripts/tsconfig.json

error TS2307: Cannot find module 'crypto' or its corresponding type declarations.
- packages/node-utils/src/crypto.ts#L1 in packages/node-utils/tsconfig.json
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/node-utils/src/crypto.ts#L3 in packages/node-utils/tsconfig.json
- packages/node-utils/src/crypto.ts#L7 in packages/node-utils/tsconfig.json
- packages/node-utils/src/crypto.ts#L11 in packages/node-utils/tsconfig.json
- packages/node-utils/src/p2p.ts#L6 in packages/node-utils/tsconfig.json
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/node-utils/src/env.ts#L2 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L6 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L10 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L18 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L26 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L36 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L36 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L49 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L53 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L61 in packages/node-utils/tsconfig.json
- packages/node-utils/src/env.ts#L65 in packages/node-utils/tsconfig.json
- packages/node-utils/src/path.ts#L45 in packages/node-utils/tsconfig.json
- packages/node-utils/src/path.ts#L46 in packages/node-utils/tsconfig.json
error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
- packages/node-utils/src/file.ts#L1 in packages/node-utils/tsconfig.json
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- packages/node-utils/src/path.ts#L1 in packages/node-utils/tsconfig.json
error TS2307: Cannot find module 'url' or its corresponding type declarations.
- packages/node-utils/src/path.ts#L2 in packages/node-utils/tsconfig.json
error TS2742: The inferred type of 'enableSignup' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L60 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableVideoImports' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L74 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableVideoImports' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L78 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableFileUpdate' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L102 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableFileUpdate' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L106 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'keepSourceFile' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L124 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableChannelSync' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L137 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableChannelSync' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L141 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableAutoBlacklist' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L159 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableAutoBlacklist' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L163 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableUserImport' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L183 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableUserImport' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L187 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableUserExport' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L205 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableUserExport' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L209 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableLive' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L227 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableTranscoding' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L256 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableTranscoding' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L269 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'setTranscodingConcurrency' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L336 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableMinimumTranscoding' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L346 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableRemoteTranscoding' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L383 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableRemoteStudio' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L402 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableStudio' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L416 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'enableTranscription' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L428 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'disableTranscription' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L432 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'updateExistingConfig' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/config-command.ts#L622 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'unfollow' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/server/follows-command.ts#L78 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'prepareResumableUpload' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/shared/abstract-command.ts#L303 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'setDefaultAccountAvatar' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/users/accounts.ts#L4 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'loginAndGetResponse' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/users/login-command.ts#L22 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'setDefaultChannelAvatar' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/videos/channels.ts#L15 in packages/server-commands/tsconfig.json
error TS2742: The inferred type of 'prepareVideoResumableUpload' cannot be named without a reference to '.pnpm/@types+superagent@8.1.9/node_modules/@types/superagent/lib/node/response.js'. This is likely not portable. A type annotation is necessary.
- packages/server-commands/src/videos/videos-command.ts#L704 in packages/server-commands/tsconfig.json

packages/types-generator/tsconfig.json

error TS2307: Cannot find module 'crypto' or its corresponding type declarations.
- packages/node-utils/src/crypto.ts#L1 in packages/node-utils/tsconfig.json
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
- packages/node-utils/src/file.ts#L1 in packages/node-utils/tsconfig.json
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- packages/node-utils/src/path.ts#L1 in packages/node-utils/tsconfig.json
error TS2307: Cannot find module 'url' or its corresponding type declarations.
- packages/node-utils/src/path.ts#L2 in packages/node-utils/tsconfig.json

ChromeDevTools/chrome-devtools-mcp

1 of 2 projects failed to build with the old tsc and were ignored

tsconfig.json

error TS2339: Property 'webkitRequestFileSystem' does not exist on type 'Window & typeof globalThis'.
- file:///mnt/ts_downloads/_/m/chrome-devtools-mcp/node_modules/chrome-devtools-frontend/front_end/core/host/InspectorFrontendHostStub.ts#L291
error TS2339: Property 'TEMPORARY' does not exist on type 'Window & typeof globalThis'.
- file:///mnt/ts_downloads/_/m/chrome-devtools-mcp/node_modules/chrome-devtools-frontend/front_end/core/host/InspectorFrontendHostStub.ts#L291
error TS2304: Cannot find name 'Entry'.
- file:///mnt/ts_downloads/_/m/chrome-devtools-mcp/node_modules/chrome-devtools-frontend/front_end/core/host/InspectorFrontendHostStub.ts#L295
error TS2304: Cannot find name 'DirectoryEntry'.
- file:///mnt/ts_downloads/_/m/chrome-devtools-mcp/node_modules/chrome-devtools-frontend/front_end/core/host/InspectorFrontendHostStub.ts#L298

conventional-changelog/conventional-changelog

7 of 10 projects failed to build with the old tsc and were ignored

tools/tsconfig.json

error TS2307: Cannot find module 'child_process' or its corresponding type declarations.
- tools/TestTools.ts#L1
error TS2307: Cannot find module 'url' or its corresponding type declarations.
- tools/TestTools.ts#L2
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- tools/TestTools.ts#L3
- tools/tmp.ts#L2
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- tools/TestTools.ts#L4
- tools/tmp.ts#L3
error TS2304: Cannot find name '__dirname'.
- tools/TestTools.ts#L11
- tools/TestTools.ts#L87
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- tools/TestTools.ts#L89
- tools/commit.ts#L10
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'code' implicitly has an 'any' type.
- tools/TestTools.ts#L104
error TS2307: Cannot find module 'stream' or its corresponding type declarations.
- tools/through.ts#L1
error TS2307: Cannot find module 'crypto' or its corresponding type declarations.
- tools/tmp.ts#L1
error TS2304: Cannot find name 'setTimeout'.
- tools/utils.ts#L2

packages/conventional-changelog-preset-loader/tsconfig.json

error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/conventional-changelog-preset-loader/src/presetLoader.spec.ts#L99
- packages/conventional-changelog-preset-loader/src/presetLoader.spec.ts#L110
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- packages/conventional-changelog-preset-loader/src/presetLoader.ts#L1

curlconverter/curlconverter

tsconfig.json

error TS2304: Cannot find name 'EmscriptenModule'.
- src/shell/webParser.ts#L12

DayuanJiang/next-ai-draw-io

2 of 3 projects failed to build with the old tsc and were ignored

packages/mcp-server/tsconfig.json

error TS2307: Cannot find module 'node:http' or its corresponding type declarations.
- packages/mcp-server/src/http-server.ts#L6
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2503: Cannot find namespace 'NodeJS'.
- packages/mcp-server/src/http-server.ts#L134
error TS7006: Parameter 'chunk' implicitly has an 'any' type.
error TS2307: Cannot find module 'node:fs/promises' or its corresponding type declarations.
- packages/mcp-server/src/index.ts#L590
error TS2307: Cannot find module 'node:path' or its corresponding type declarations.
- packages/mcp-server/src/index.ts#L591
error TS7006: Parameter 'err' implicitly has an 'any' type.
- packages/mcp-server/src/index.ts#L642

typescript-bot · 2026-01-28T04:08:19Z

@jakebailey Here are some more interesting changes from running the top 800 repos suite

Details

DouyinFE/semi-design

17 of 18 projects failed to build with the old tsc and were ignored

ecosystem/semi-mcp/tsconfig.json

error TS2307: Cannot find module 'http' or its corresponding type declarations.
- ecosystem/semi-mcp/src/http.ts#L15
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'h' implicitly has an 'any' type.
- ecosystem/semi-mcp/src/http.ts#L43
- ecosystem/semi-mcp/src/http.ts#L49
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
error TS2304: Cannot find name 'setInterval'.
- ecosystem/semi-mcp/src/http.ts#L100
error TS2304: Cannot find name 'URL'.
- ecosystem/semi-mcp/src/http.ts#L153
error TS7006: Parameter 'chunk' implicitly has an 'any' type.
- ecosystem/semi-mcp/src/http.ts#L189
error TS2304: Cannot find name 'crypto'.
- ecosystem/semi-mcp/src/http.ts#L208
error TS7006: Parameter 'err' implicitly has an 'any' type.
- ecosystem/semi-mcp/src/http.ts#L310
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- ecosystem/semi-mcp/src/server.ts#L15
- ecosystem/semi-mcp/src/utils/file-cache.ts#L10
error TS7016: Could not find a declaration file for module 'url'. '/mnt/ts_downloads/_/m/semi-design/node_modules/url/url.js' implicitly has an 'any' type.
- ecosystem/semi-mcp/src/server.ts#L16
error TS2307: Cannot find module 'path' or its corresponding type declarations.
error TS2339: Property 'url' does not exist on type 'ImportMeta'.
- ecosystem/semi-mcp/src/server.ts#L22
error TS2304: Cannot find name 'fetch'.
error TS2307: Cannot find module 'os' or its corresponding type declarations.
- ecosystem/semi-mcp/src/utils/file-cache.ts#L7
error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
- ecosystem/semi-mcp/src/utils/file-cache.ts#L9

eggjs/egg

18 of 74 projects failed to build with the old tsc and were ignored

tools/egg-bin/test/fixtures/ts/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/ts/test/sub.ts#L7
error TS2307: Cannot find module 'node:assert' or its corresponding type declarations.
- tools/egg-bin/test/fixtures/ts/test/typescript.test.ts#L1
error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/ts/test/typescript.test.ts#L5
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/ts/test/typescript.test.ts#L6
- tools/egg-bin/test/fixtures/ts/test/typescript.test.ts#L11

tools/egg-bin/test/fixtures/setup-ts/tsconfig.json

error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/setup-ts/test/a.test.ts#L3
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/setup-ts/test/a.test.ts#L4

tools/egg-bin/test/fixtures/mocha-test-ts-esm/tsconfig.json

error TS2307: Cannot find module 'assert' or its corresponding type declarations.
- tools/egg-bin/test/fixtures/mocha-test-ts-esm/test/bar.test.ts#L1
- tools/egg-bin/test/fixtures/mocha-test-ts-esm/test/foo.test.ts#L1
error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/mocha-test-ts-esm/test/bar.test.ts#L3
- tools/egg-bin/test/fixtures/mocha-test-ts-esm/test/foo.test.ts#L3
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/mocha-test-ts-esm/test/bar.test.ts#L4
- tools/egg-bin/test/fixtures/mocha-test-ts-esm/test/foo.test.ts#L4

tools/egg-bin/test/fixtures/example-ts-error-stack-mixed/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/example-ts-error-stack-mixed/app.ts#L6

tools/egg-bin/test/fixtures/example-ts-error-stack/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/example-ts-error-stack/app.ts#L6
error TS2307: Cannot find module 'node:assert' or its corresponding type declarations.
- tools/egg-bin/test/fixtures/example-ts-error-stack/test/index.test.ts#L1
error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/example-ts-error-stack/test/index.test.ts#L3
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/example-ts-error-stack/test/index.test.ts#L5
- tools/egg-bin/test/fixtures/example-ts-error-stack/test/index.test.ts#L10

tools/egg-bin/test/fixtures/example-ts-cluster/tsconfig.json

error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/example-ts-cluster/test/index.test.ts#L6
error TS2304: Cannot find name 'before'.
- tools/egg-bin/test/fixtures/example-ts-cluster/test/index.test.ts#L8
error TS2304: Cannot find name 'after'.
- tools/egg-bin/test/fixtures/example-ts-cluster/test/index.test.ts#L19
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- tools/egg-bin/test/fixtures/example-ts-cluster/test/index.test.ts#L20

packages/core/test/fixtures/egg-ts-js-tsconfig-paths/tsconfig.json

error TS2591: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.

elie222/inbox-zero

2 of 8 projects failed to build with the old tsc and were ignored

packages/tinybird-ai-analytics/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.

packages/tinybird/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.

packages/resend/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.

packages/loops/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/loops/src/loops.ts#L6
- packages/loops/src/loops.ts#L11

ether/etherpad-lite

src/tsconfig.json

error TS2592: Cannot find name '$'. Do you need to install type definitions for jQuery? Try `npm i --save-dev @types/jquery` and then add 'jquery' to the types field in your tsconfig.
error TS2304: Cannot find name 'JQuery'.
- src/static/js/pad_utils.ts#L101
error TS7006: Parameter 'evt' implicitly has an 'any' type.
- src/static/js/pad_utils.ts#L265
error TS2683: 'this' implicitly has type 'any' because it does not have a type annotation.
- src/static/js/pad_utils.ts#L422

f/awesome-chatgpt-prompts

2 of 3 projects failed to build with the old tsc and were ignored

packages/prompts.chat/tsconfig.json

error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- packages/prompts.chat/src/cli/api.ts#L1
- packages/prompts.chat/src/cli/new.ts#L2
error TS2307: Cannot find module 'os' or its corresponding type declarations.
- packages/prompts.chat/src/cli/api.ts#L2
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- packages/prompts.chat/src/cli/api.ts#L3
- packages/prompts.chat/src/cli/new.ts#L3
error TS2552: Cannot find name 'Buffer'. Did you mean 'buffer'?
- packages/prompts.chat/src/cli/components/PromptDetail.tsx#L108
error TS2307: Cannot find module 'child_process' or its corresponding type declarations.
- packages/prompts.chat/src/cli/index.tsx#L5
- packages/prompts.chat/src/cli/new.ts#L1
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'code' implicitly has an 'any' type.
- packages/prompts.chat/src/cli/index.tsx#L157
- packages/prompts.chat/src/cli/new.ts#L58
error TS7006: Parameter 'err' implicitly has an 'any' type.
- packages/prompts.chat/src/cli/new.ts#L66
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/prompts.chat/src/cli/platforms.ts#L82

facebook/docusaurus

26 of 43 projects failed to build with the old tsc and were ignored

typescript-bot · 2026-01-28T04:08:19Z

@jakebailey Here are some more interesting changes from running the top 800 repos suite

Details

firecrawl/firecrawl

3 of 5 projects failed to build with the old tsc and were ignored

apps/js-sdk/firecrawl/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- apps/js-sdk/firecrawl/src/v2/utils/getVersion.ts#L8
error TS2307: Cannot find module 'events' or its corresponding type declarations.
- apps/js-sdk/firecrawl/src/v2/watcher.ts#L1
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS18046: 'data' is of type 'unknown'.
- apps/js-sdk/firecrawl/src/v2/watcher.ts#L53
error TS2339: Property 'emit' does not exist on type 'Watcher'.

fuma-nama/fumadocs

45 of 49 projects failed to build with the old tsc and were ignored

packages/twoslash/tsconfig.json

error TS2307: Cannot find module 'node:crypto' or its corresponding type declarations.
- packages/twoslash/src/cache-fs.ts#L4
error TS2307: Cannot find module 'node:fs' or its corresponding type declarations.
- packages/twoslash/src/cache-fs.ts#L5
error TS2307: Cannot find module 'node:path' or its corresponding type declarations.
- packages/twoslash/src/cache-fs.ts#L6
error TS2307: Cannot find module 'node:process' or its corresponding type declarations.
- packages/twoslash/src/cache-fs.ts#L7

graphile/crystal

10 of 11 projects failed to build with the old tsc and were ignored

grafast/grafast/tsconfig.test.json

error TS2307: Cannot find module 'assert' or its corresponding type declarations.
- utils/pg-sql2/src/index.ts#L2 in utils/pg-sql2/tsconfig.json
error TS2307: Cannot find module 'util' or its corresponding type declarations.
- utils/pg-sql2/src/index.ts#L3 in utils/pg-sql2/tsconfig.json
- utils/pg-sql2/src/index.ts#L4 in utils/pg-sql2/tsconfig.json
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'depth' implicitly has an 'any' type.
- utils/pg-sql2/src/index.ts#L43 in utils/pg-sql2/tsconfig.json
error TS7006: Parameter 'options' implicitly has an 'any' type.
- utils/pg-sql2/src/index.ts#L44 in utils/pg-sql2/tsconfig.json
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
error TS2304: Cannot find name 'AbortSignal'.
error TS2307: Cannot find module 'http' or its corresponding type declarations.
- grafast/grafast/src/envelop.ts#L3 in grafast/grafast/tsconfig.json
error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- grafast/grafast/src/grafastGraphql.ts#L42 in grafast/grafast/tsconfig.json
- grafast/grafast/src/inspect.ts#L16 in grafast/grafast/tsconfig.json
error TS2503: Cannot find namespace 'NodeJS'.
- grafast/grafast/src/grafastPrint.ts#L250 in grafast/grafast/tsconfig.json
- grafast/grafast/src/prepare.ts#L835 in grafast/grafast/tsconfig.json
error TS2304: Cannot find name 'setTimeout'.
error TS2304: Cannot find name 'global'.
- grafast/grafast/src/mermaid.ts#L97 in grafast/grafast/tsconfig.json
error TS2304: Cannot find name 'AbortController'.
- grafast/grafast/src/prepare.ts#L685 in grafast/grafast/tsconfig.json
- grafast/grafast/src/prepare.ts#L1217 in grafast/grafast/tsconfig.json
error TS2550: Property 'asyncDispose' does not exist on type 'SymbolConstructor'. Do you need to change your target library? Try changing the 'lib' compiler option to 'esnext' or later.
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- grafast/grafast/src/steps/connection.ts#L1251 in grafast/grafast/tsconfig.json
- grafast/grafast/src/steps/connection.ts#L1254 in grafast/grafast/tsconfig.json
error TS2304: Cannot find name 'performance'.
error TS7053: Element implicitly has an 'any' type because expression of type 'any' can't be used to index type 'AsyncIterator<T, void, never> & Partial<AsyncIteratorObject<T, void, never>>'.
- grafast/grafast/src/utils.ts#L1499 in grafast/grafast/tsconfig.json
error TS2353: Object literal may only specify known properties, and '[Symbol.asyncDispose]' does not exist in type 'AsyncGenerator<{ index: number; value: number; }, void, unknown>'.
- grafast/grafast/__tests__/distributor-test.ts#L149 in grafast/grafast/tsconfig.test.json
error TS7053: Element implicitly has an 'any' type because expression of type 'unique symbol' can't be used to index type 'AsyncGenerator<{ index: number; value: number; }, void, unknown>'.
- grafast/grafast/__tests__/distributor-test.ts#L154 in grafast/grafast/tsconfig.test.json

hediet/vscode-debug-visualizer

4 of 5 projects failed to build with the old tsc and were ignored

data-extraction/tsconfig.json

error TS2304: Cannot find name 'global'.
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- data-extraction/src/js/api/injection.ts#L1
error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- data-extraction/src/js/api/injection.ts#L14
error TS2304: Cannot find name '__filename'.
- data-extraction/src/js/api/injection.ts#L15

typescript-bot · 2026-01-28T04:08:20Z

@jakebailey Here are some more interesting changes from running the top 800 repos suite

Details

humanlayer/12-factor-agents

20 of 23 projects failed to build with the old tsc and were ignored

workshops/2025-05-17/sections/00-hello-world/walkthrough/00-tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- workshops/2025-05-17/sections/00-hello-world/walkthrough/00-index.ts#L2
- workshops/2025-05-17/sections/00-hello-world/walkthrough/00-index.ts#L9

workshops/2025-05/sections/01-cli-and-agent/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- workshops/2025-05/sections/01-cli-and-agent/src/index.ts#L2
- workshops/2025-05/sections/01-cli-and-agent/src/index.ts#L9

packages/walkthroughgen/tsconfig.json

error TS2307: Cannot find module 'fs' or its corresponding type declarations.
error TS2307: Cannot find module 'path' or its corresponding type declarations.
error TS2307: Cannot find module 'child_process' or its corresponding type declarations.
- packages/walkthroughgen/src/cli.ts#L5
error TS2550: Property 'padStart' does not exist on type 'string'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2017' or later.
- packages/walkthroughgen/src/cli.ts#L417
- packages/walkthroughgen/src/cli.ts#L426
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/walkthroughgen/src/index.ts#L4
error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
error TS2304: Cannot find name 'expect'.
error TS2304: Cannot find name '__dirname'.
- packages/walkthroughgen/test/e2e/test-e2e.ts#L221
- packages/walkthroughgen/test/utils/temp-dir.ts#L9
error TS2307: Cannot find module 'os' or its corresponding type declarations.
- packages/walkthroughgen/test/utils/temp-dir.ts#L2

javascript-obfuscator/javascript-obfuscator

1 of 4 projects failed to build with the old tsc and were ignored

tsconfig.json

error TS2304: Cannot find name '__non_webpack_require__'.
- src/cli/utils/CLIUtils.ts#L31

test/tsconfig.test.json

error TS2304: Cannot find name '__non_webpack_require__'.
- src/cli/utils/CLIUtils.ts#L31

src/tsconfig.browser.json

error TS2304: Cannot find name '__non_webpack_require__'.
- src/cli/utils/CLIUtils.ts#L31

langgenius/dify

1 of 2 projects failed to build with the old tsc and were ignored

sdks/nodejs-client/tsconfig.json

error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'node:stream' or its corresponding type declarations.
- sdks/nodejs-client/src/http/client.ts#L8
- sdks/nodejs-client/src/http/sse.ts#L1
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- sdks/nodejs-client/src/http/client.ts#L301
- sdks/nodejs-client/src/http/client.ts#L302
error TS2307: Cannot find module 'node:string_decoder' or its corresponding type declarations.
- sdks/nodejs-client/src/http/sse.ts#L2
error TS2503: Cannot find namespace 'NodeJS'.

mattpocock/ts-reset

tsconfig.json

error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
- scripts/build.ts#L1
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- scripts/build.ts#L2
- scripts/lint.ts#L2
error TS2304: Cannot find name '__dirname'.
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- scripts/build.ts#L30
- scripts/lint.ts#L29
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- scripts/lint.ts#L1
error TS7006: Parameter 'file' implicitly has an 'any' type.
- scripts/lint.ts#L19

typescript-bot · 2026-01-28T04:08:21Z

@jakebailey Here are some more interesting changes from running the top 800 repos suite

Details

microsoft/vscode-extension-samples

16 of 77 projects failed to build with the old tsc and were ignored

webview-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- webview-sample/src/extension.ts#L28

test-provider-sample/tsconfig.json

error TS7006: Parameter 'lineText' implicitly has an 'any' type.
- test-provider-sample/src/extension.ts#L74
error TS7006: Parameter 'lineNo' implicitly has an 'any' type.
- test-provider-sample/src/extension.ts#L74
error TS2307: Cannot find module 'util' or its corresponding type declarations.
- test-provider-sample/src/testTree.ts#L1
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- test-provider-sample/src/testTree.ts#L18
error TS2304: Cannot find name 'setTimeout'.
- test-provider-sample/src/testTree.ts#L103

task-provider-sample/tsconfig.json

error TS2307: Cannot find module 'path' or its corresponding type declarations.
- task-provider-sample/src/customTaskProvider.ts#L5
- task-provider-sample/src/rakeTaskProvider.ts#L5
error TS2304: Cannot find name 'setTimeout'.
- task-provider-sample/src/customTaskProvider.ts#L124
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- task-provider-sample/src/rakeTaskProvider.ts#L6
error TS2307: Cannot find module 'child_process' or its corresponding type declarations.
- task-provider-sample/src/rakeTaskProvider.ts#L7
error TS2307: Cannot find module 'console' or its corresponding type declarations.
- task-provider-sample/src/rakeTaskProvider.ts#L9
error TS7006: Parameter 'value' implicitly has an 'any' type.
- task-provider-sample/src/rakeTaskProvider.ts#L45
error TS7006: Parameter 'error' implicitly has an 'any' type.
- task-provider-sample/src/rakeTaskProvider.ts#L53
error TS7006: Parameter 'stdout' implicitly has an 'any' type.
- task-provider-sample/src/rakeTaskProvider.ts#L53
error TS7006: Parameter 'stderr' implicitly has an 'any' type.
- task-provider-sample/src/rakeTaskProvider.ts#L53

tabs-api-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- tabs-api-sample/src/extension.ts#L4
error TS2552: Cannot find name 'setInterval'. Did you mean 'interval'?
- tabs-api-sample/src/extension.ts#L31
error TS2304: Cannot find name 'clearInterval'.
- tabs-api-sample/src/extension.ts#L50

source-control-sample/tsconfig.json

error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- source-control-sample/src/afs.ts#L5
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'path' or its corresponding type declarations.
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
error TS2503: Cannot find namespace 'NodeJS'.
- source-control-sample/src/fiddleSourceControl.ts#L16
error TS2304: Cannot find name 'clearTimeout'.
- source-control-sample/src/fiddleSourceControl.ts#L191
error TS2304: Cannot find name 'setTimeout'.
- source-control-sample/src/fiddleSourceControl.ts#L192

shell-integration-sample/tsconfig.json

error TS2307: Cannot find module 'path' or its corresponding type declarations.
- shell-integration-sample/src/extension.ts#L1

quickinput-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- quickinput-sample/src/extension.ts#L24
error TS2304: Cannot find name 'setTimeout'.
- quickinput-sample/src/multiStepInput.ts#L115
- quickinput-sample/src/multiStepInput.ts#L121
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- quickinput-sample/src/quickOpen.ts#L6
error TS2307: Cannot find module 'child_process' or its corresponding type declarations.
- quickinput-sample/src/quickOpen.ts#L7
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- quickinput-sample/src/quickOpen.ts#L64
- quickinput-sample/src/quickOpen.ts#L65
error TS7006: Parameter 'err' implicitly has an 'any' type.
- quickinput-sample/src/quickOpen.ts#L67
error TS7006: Parameter 'stdout' implicitly has an 'any' type.
- quickinput-sample/src/quickOpen.ts#L67
error TS7006: Parameter 'relative' implicitly has an 'any' type.
- quickinput-sample/src/quickOpen.ts#L77

progress-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- progress-sample/src/extension.ts#L15
error TS2304: Cannot find name 'setTimeout'.

notifications-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- notifications-sample/src/extension.ts#L40
error TS2304: Cannot find name 'setTimeout'.

notebook-serializer-sample/tsconfig.json

error TS2307: Cannot find module 'util' or its corresponding type declarations.
- notebook-serializer-sample/src/serializer.ts#L2

l10n-sample/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- l10n-sample/src/cli.ts#L3
- l10n-sample/src/cli.ts#L5
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- l10n-sample/src/cli.ts#L10
- l10n-sample/src/extension.ts#L12
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- l10n-sample/src/extension.ts#L3
error TS2304: Cannot find name '__dirname'.
- l10n-sample/src/extension.ts#L22

jupyter-server-provider-sample/tsconfig.json

error TS2304: Cannot find name 'setTimeout'.
- jupyter-server-provider-sample/src/extension.ts#L184
error TS2304: Cannot find name 'URL'.
- jupyter-server-provider-sample/src/extension.ts#L196
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- jupyter-server-provider-sample/src/jupyter.ts#L1
error TS2307: Cannot find module 'os' or its corresponding type declarations.
- jupyter-server-provider-sample/src/jupyter.ts#L2
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- jupyter-server-provider-sample/src/jupyter.ts#L3
error TS2307: Cannot find module 'util' or its corresponding type declarations.
- jupyter-server-provider-sample/src/jupyter.ts#L4
error TS7006: Parameter 'file' implicitly has an 'any' type.
- jupyter-server-provider-sample/src/jupyter.ts#L20
error TS7006: Parameter 'c' implicitly has an 'any' type.
- jupyter-server-provider-sample/src/jupyter.ts#L26
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.

jupyter-kernel-execution-sample/tsconfig.json

error TS2307: Cannot find module 'path' or its corresponding type declarations.
- jupyter-kernel-execution-sample/src/extension.ts#L14
error TS2307: Cannot find module 'util' or its corresponding type declarations.
- jupyter-kernel-execution-sample/src/extension.ts#L15

helloworld-web-sample/tsconfig.json

error TS7016: Could not find a declaration file for module 'assert'. '/mnt/ts_downloads/_/m/vscode-extension-samples/helloworld-web-sample/node_modules/assert/build/assert.js' implicitly has an 'any' type.
- helloworld-web-sample/src/web/test/suite/extension.test.ts#L1
error TS2593: Cannot find name 'suite'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- helloworld-web-sample/src/web/test/suite/extension.test.ts#L8
error TS2593: Cannot find name 'test'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- helloworld-web-sample/src/web/test/suite/extension.test.ts#L11
error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- helloworld-web-sample/src/web/test/suite/index.ts#L2
- helloworld-web-sample/src/web/test/suite/index.ts#L14
error TS2304: Cannot find name 'mocha'.
- helloworld-web-sample/src/web/test/suite/index.ts#L7
- helloworld-web-sample/src/web/test/suite/index.ts#L18
error TS2503: Cannot find namespace '__WebpackModuleApi'.
- helloworld-web-sample/src/web/test/suite/index.ts#L13
error TS7006: Parameter 'failures' implicitly has an 'any' type.
- helloworld-web-sample/src/web/test/suite/index.ts#L18

helloworld-test-cli-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- helloworld-test-cli-sample/src/extension.ts#L10
error TS2307: Cannot find module 'assert' or its corresponding type declarations.
- helloworld-test-cli-sample/src/test/suite/extension.test.ts#L1
error TS2593: Cannot find name 'suite'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- helloworld-test-cli-sample/src/test/suite/extension.test.ts#L8
error TS2593: Cannot find name 'test'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
- helloworld-test-cli-sample/src/test/suite/extension.test.ts#L11

helloworld-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- helloworld-sample/src/extension.ts#L10

getting-started-sample/tsconfig.json

error TS2304: Cannot find name 'setTimeout'.

fsprovider-sample/tsconfig.json

error TS2304: Cannot find name 'TextEncoder'.
- fsprovider-sample/src/extension.ts#L4
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- fsprovider-sample/src/extension.ts#L8
error TS2304: Cannot find name 'setTimeout'.
- fsprovider-sample/src/fileSystemProvider.ts#L205
- fsprovider-sample/src/fileSystemProvider.ts#L221
error TS2304: Cannot find name 'clearTimeout'.
- fsprovider-sample/src/fileSystemProvider.ts#L218

fsconsumer-sample/tsconfig.json

error TS2307: Cannot find module 'path' or its corresponding type declarations.
- fsconsumer-sample/src/extension.ts#L6
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- fsconsumer-sample/src/extension.ts#L76
- fsconsumer-sample/src/extension.ts#L84

esbuild-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- esbuild-sample/src/extension.ts#L10

drop-on-document/tsconfig.json

error TS2307: Cannot find module 'path' or its corresponding type declarations.
- drop-on-document/src/extension.ts#L1

diagnostic-related-information-sample/tsconfig.json

error TS2307: Cannot find module 'path' or its corresponding type declarations.
- diagnostic-related-information-sample/src/extension.ts#L2

decorator-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- decorator-sample/src/extension.ts#L6
error TS2503: Cannot find namespace 'NodeJS'.
- decorator-sample/src/extension.ts#L8
error TS2304: Cannot find name 'clearTimeout'.
- decorator-sample/src/extension.ts#L60
error TS2552: Cannot find name 'setTimeout'. Did you mean 'timeout'?
- decorator-sample/src/extension.ts#L64

chat-sample/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
error TS2552: Cannot find name 'setTimeout'. Did you mean 'timeout'?
- chat-sample/src/tools.ts#L103
error TS2304: Cannot find name 'clearTimeout'.
- chat-sample/src/tools.ts#L107

call-hierarchy-sample/tsconfig.json

error TS2307: Cannot find module 'util' or its corresponding type declarations.
- call-hierarchy-sample/src/extension.ts#L5
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- call-hierarchy-sample/src/extension.ts#L12

basic-multi-root-sample/tsconfig.json

error TS2307: Cannot find module 'path' or its corresponding type declarations.
- basic-multi-root-sample/src/extension.ts#L5

authenticationprovider-sample/tsconfig.json

error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- authenticationprovider-sample/src/extension.ts#L30

modelcontextprotocol/inspector

2 of 4 projects failed to build with the old tsc and were ignored

cli/tsconfig.json

error TS2307: Cannot find module 'node:fs' or its corresponding type declarations.
- cli/src/cli.ts#L4
error TS2307: Cannot find module 'node:path' or its corresponding type declarations.
- cli/src/cli.ts#L5
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- cli/src/cli.ts#L6
error TS2307: Cannot find module 'url' or its corresponding type declarations.
- cli/src/cli.ts#L8
error TS2534: A function returning 'never' cannot have a reachable end point.
- cli/src/cli.ts#L45
- cli/src/error-handler.ts#L15
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'error' implicitly has an 'any' type.
- cli/src/cli.ts#L377
- cli/src/index.ts#L405
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- cli/src/index.ts#L3
error TS2322: Type '{} | null' is not assignable to type 'string'.
- cli/src/transport.ts#L29

modelcontextprotocol/servers

src/sequentialthinking/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- src/sequentialthinking/index.ts#L117
- src/sequentialthinking/lib.ts#L21

src/memory/tsconfig.json

error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- src/memory/index.ts#L6
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- src/memory/index.ts#L7
error TS2307: Cannot find module 'url' or its corresponding type declarations.
- src/memory/index.ts#L8
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'line' implicitly has an 'any' type.
- src/memory/index.ts#L74
- src/memory/index.ts#L75

src/filesystem/tsconfig.json

error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
- src/filesystem/index.ts#L10
- src/filesystem/lib.ts#L1
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- src/filesystem/index.ts#L11
- src/filesystem/roots-utils.ts#L1
error TS2307: Cannot find module 'path' or its corresponding type declarations.
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'dir' implicitly has an 'any' type.
- src/filesystem/index.ts#L43
- src/filesystem/index.ts#L60
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'chunk' implicitly has an 'any' type.
- src/filesystem/index.ts#L158
error TS7006: Parameter 'err' implicitly has an 'any' type.
- src/filesystem/index.ts#L165
error TS7006: Parameter 'entry' implicitly has an 'any' type.
error TS7006: Parameter 'e' implicitly has an 'any' type.
- src/filesystem/index.ts#L489
- src/filesystem/index.ts#L490
error TS7006: Parameter 'sum' implicitly has an 'any' type.
- src/filesystem/index.ts#L491
error TS2307: Cannot find module 'os' or its corresponding type declarations.
error TS2307: Cannot find module 'crypto' or its corresponding type declarations.
- src/filesystem/lib.ts#L4
error TS2503: Cannot find namespace 'NodeJS'.
- src/filesystem/lib.ts#L102
- src/filesystem/lib.ts#L144
error TS2304: Cannot find name 'BufferEncoding'.
- src/filesystem/lib.ts#L135
error TS2552: Cannot find name 'Buffer'. Did you mean 'buffer'?
- src/filesystem/lib.ts#L320

moeru-ai/airi

24 of 45 projects failed to build with the old tsc and were ignored

packages/server-shared/tsconfig.json

error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
- packages/server-shared/src/index.ts#L1

packages/ccc/tsconfig.json

error TS2304: Cannot find name 'TextEncoder'.
- packages/ccc/src/export/png.ts#L13
error TS2304: Cannot find name 'btoa'.
- packages/ccc/src/export/png.ts#L14

musistudio/claude-code-router

6 of 7 projects failed to build with the old tsc and were ignored

docs/tsconfig.json

error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.

typescript-bot · 2026-01-28T04:08:22Z

@jakebailey Here are some more interesting changes from running the top 800 repos suite

Details

Nutlope/aicommits

tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS7006: Parameter 'file' implicitly has an 'any' type.
- src/commands/aicommits.ts#L63
- src/utils/git.ts#L56
error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
error TS2307: Cannot find module 'path' or its corresponding type declarations.
error TS2307: Cannot find module 'url' or its corresponding type declarations.
- src/commands/hook.ts#L3
error TS7006: Parameter 'line' implicitly has an 'any' type.
- src/commands/pr.ts#L88
error TS2307: Cannot find module 'child_process' or its corresponding type declarations.
- src/commands/setup.ts#L1
- tests/specs/cli/no-verify.ts#L2
error TS2307: Cannot find module 'os' or its corresponding type declarations.
- src/feature/models.ts#L4
- src/utils/config-runtime.ts#L3
error TS2307: Cannot find module 'crypto' or its corresponding type declarations.
- src/feature/models.ts#L5
error TS2591: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- src/utils/web.ts#L10
- tests/specs/cli/no-verify.ts#L11
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- tests/specs/cli/no-verify.ts#L3

palantir/blueprint

23 of 25 projects failed to build with the old tsc and were ignored

packages/test-commons/src/tsconfig.json

error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.

packages/eslint-plugin/src/tsconfig.json

error TS2550: Property 'includes' does not exist on type 'string[]'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2016' or later.
error TS2550: Property 'entries' does not exist on type 'ObjectConstructor'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2017' or later.
- packages/eslint-plugin/src/rules/no-deprecated-type-references.ts#L170

PlasmoHQ/plasmo

83 of 88 projects failed to build with the old tsc and were ignored

tsconfig.json

error TS2307: Cannot find module 'assert' or its corresponding type declarations.
- assert.ts#L1
error TS2694: Namespace 'NodeJS' has no exported member 'Timeout'.
- debounce.ts#L6
- debounce.ts#L17
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
- fs.ts#L1
error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
- fs.ts#L2
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- path.ts#L1
error TS2307: Cannot find module 'process' or its corresponding type declarations.
- wait.ts#L1

packages/init/tsconfig.json

error TS2503: Cannot find namespace 'NodeJS'.
- cli/plasmo/src/type.ts#L53

tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'assert' or its corresponding type declarations.
- file:///mnt/ts_downloads/_/m/plasmo/packages/utils/assert.ts#L1

api/persistent/tsconfig.json

error TS2304: Cannot find name 'chrome'.
- api/persistent/src/background.ts#L3

postcss/postcss

tsconfig.json

error TS2307: Cannot find module 'node:path' or its corresponding type declarations.
- test/css-syntax-error.test.ts#L2
error TS2307: Cannot find module 'node:url' or its corresponding type declarations.
- test/css-syntax-error.test.ts#L3
error TS2304: Cannot find name '__dirname'.
error TS2307: Cannot find module 'v8' or its corresponding type declarations.
- test/fromJSON.test.ts#L3
error TS2307: Cannot find module 'fs' or its corresponding type declarations.
error TS2307: Cannot find module 'path' or its corresponding type declarations.
error TS2307: Cannot find module 'url' or its corresponding type declarations.
- test/map.test.ts#L12
- test/previous-map.test.ts#L12
error TS7006: Parameter 'i' implicitly has an 'any' type.
- test/map.test.ts#L43
- test/previous-map.test.ts#L30
error TS2591: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- test/map.test.ts#L632
- test/map.test.ts#L633
error TS2584: Cannot find name 'console'. Do you need to change your target library? Try changing the 'lib' compiler option to include 'dom'.
error TS2304: Cannot find name 'setTimeout'.

typescript-bot · 2026-01-28T04:08:23Z

@jakebailey Here are some more interesting changes from running the top 800 repos suite

Details

prisma/prisma

184 of 206 projects failed to build with the old tsc and were ignored

packages/type-benchmark-tests/huge-schema/tsconfig.json

error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
error TS2307: Cannot find module 'node:path' or its corresponding type declarations.
- packages/config/src/loadConfigFromFile.ts#L1
error TS2307: Cannot find module 'node:process' or its corresponding type declarations.
- packages/config/src/loadConfigFromFile.ts#L2

packages/get-platform/tsconfig.json

error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
error TS2304: Cannot find name 'expect'.
error TS2593: Cannot find name 'test'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
error TS2304: Cannot find name 'beforeEach'.
error TS2304: Cannot find name 'afterEach'.
error TS2694: Namespace 'global.jest' has no exported member 'SpyInstance'.
error TS2708: Cannot use namespace 'jest' as a value.

packages/fetch-engine/tsconfig.json

error TS2304: Cannot find name 'beforeEach'.
error TS2304: Cannot find name 'afterEach'.
error TS2694: Namespace 'global.jest' has no exported member 'SpyInstance'.
error TS2708: Cannot use namespace 'jest' as a value.

packages/engines/tsconfig.json

error TS2304: Cannot find name 'beforeEach'.
error TS2304: Cannot find name 'afterEach'.
error TS2694: Namespace 'global.jest' has no exported member 'SpyInstance'.
error TS2708: Cannot use namespace 'jest' as a value.

packages/debug/tsconfig.json

error TS2593: Cannot find name 'describe'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
error TS2593: Cannot find name 'test'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.
error TS2304: Cannot find name 'expect'.
error TS2304: Cannot find name 'jest'.
error TS2304: Cannot find name 'beforeEach'.
- packages/debug/src/__tests__/debug.extended.test.ts#L11
error TS2304: Cannot find name 'afterEach'.
- packages/debug/src/__tests__/debug.extended.test.ts#L20
error TS2593: Cannot find name 'it'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.

packages/credentials-store/tsconfig.build.json

error TS2307: Cannot find module 'fs/promises' or its corresponding type declarations.
- packages/credentials-store/src/index.ts#L1
error TS2307: Cannot find module 'path' or its corresponding type declarations.
- packages/credentials-store/src/index.ts#L2
error TS2591: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node` and then add 'node' to the types field in your tsconfig.
- packages/credentials-store/src/index.ts#L31

packages/client-engine-runtime/tsconfig.json

error TS2593: Cannot find name 'test'. Do you need to install type definitions for a test runner? Try `npm i --save-dev @types/jest` or `npm i --save-dev @types/mocha` and then add 'jest' or 'mocha' to the types field in your tsconfig.

...rence/tsbuild/moduleResolution/impliedNodeFormat-differs-between-projects-for-shared-file.js

sheetalkamat · 2026-01-30T19:32:52Z

src/services/codefixes/fixCannotFindModule.ts

    errorCodeCannotFindModule,
    Diagnostics.Could_not_find_a_declaration_file_for_module_0_1_implicitly_has_an_any_type.code,
+    Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_save_dev_types_Slashnode.code,
+    Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_save_dev_types_Slashnode_and_then_add_node_to_the_types_field_in_your_tsconfig.code,


Doesnt this need to fix tsconfig to add type to types array ?

I don't think we should add a new LS feature for it at this point

...ines/reference/tsserver/resolutionCache/works-correctly-when-typings-are-added-or-removed.js

...ce/tsserver/typeReferenceDirectives/when-typeReferenceDirective-contains-UpperCasePackage.js

Blame: microsoft/TypeScript#63054 TypeScript are moving to explicit types instead of catch-all by default. This means that projects need to have a types entry if they want to rely on additional types. This was surfaced by our canary job on February 5: https://github.com/remeda/remeda/actions/runs/21703126297/job/62587774821

RyanCavanaugh added 10 commits January 27, 2026 15:25

Add utility function; update sites that depend on old wildcard behavior

7c95cfb

Make the code change in core utils

b18e524

Add baselines that just change error message

03a711e

Trace-only changes, hopefully

0c104b8

Update testcases

9ec13ae

More traces

c1d487f

Format

d0db3cc

One more test

5186331

Update .d.ts

499cd4c

Update typingsInstaller tests

2312bd9

Copilot AI review requested due to automatic review settings January 28, 2026 00:42

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RyanCavanaugh added 6 commits January 30, 2026 10:26

Add timeout run so we can see zero errors in this test

ec8e039

Same for this test

dd8df7a

Merge remote-tracking branch 'upstream/main' into fix62195_2

25b88ea

Merge conflicted fourslash tests

d398d5b

typo

c374421

Format

5dc64a2

RyanCavanaugh requested a review from sheetalkamat January 30, 2026 20:07

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jakebailey added the Breaking Change Would introduce errors in existing code label Jan 31, 2026

typescript-bot added For Milestone Bug PRs that fix a bug with a specific milestone and removed For Uncommitted Bug PR for untriaged, rejected, closed or missing bug labels Jan 31, 2026

RyanCavanaugh added 2 commits February 4, 2026 13:47

merge w/ main

46c6b0c

Add * to unit tests that need it

3f2b383

sheetalkamat approved these changes Feb 4, 2026

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RyanCavanaugh enabled auto-merge February 4, 2026 22:31

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Copilot AI mentioned this pull request Feb 5, 2026

Port TypeScript PR #63054: Default types to [], support "*" wildcard microsoft/typescript-go#2688

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jakebailey added this pull request to the merge queue Feb 5, 2026

Merged via the queue into microsoft:main with commit f09a0e5 Feb 5, 2026
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eranhirsch mentioned this pull request Feb 6, 2026

chore: Explicitly include node types remeda/remeda#1282

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RyanCavanaugh commented Jan 28, 2026 •

edited by jakebailey

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