Typescript auto-complete not working in VSCode

[m1212e]

I'm trying to make use of Puppeteer within a ts file which works fine except the VSCode Intellisense stops working a soon as I'm inside a .ts and not a .js file.
I've seen some posts about this incident but none could help me. What I did:

• created a project via npm init
• installed dependencies as follows:

    "dependencies": {
    "@types/node": "^14.0.14",
    "events": "^3.1.0",
    "puppeteer": "^4.0.1",
    "typescript": "^3.9.5" }

      "devDependencies": {
    "puppeteer-tsd": "0.0.2"  }

• created tsconfig.json

 "target": "es5",
 "lib": ["es2015", "dom"],
 "outDir": "./dist",
   .
   .
   .
  "include": ["src/**/*", "node_modules/puppeteer-tsd/src/index.d.ts"]

• created src and dist folder
• put a main.ts inside my src
• told VSCode to use the project TS version instead of its own

Then I compiled. Everything works fine. But I get no IntelliSense to help me out while I type.
So I created a .js file in my src directory, copied the code from my main.ts inside it and then I got Intellisense to work perfectly fine with all suggestions and so on. And I have no idea left what I could try except accepting it and code without it.
I'd be greatful for any suggestions on what could be the issue. Thx in advance!

Meanwhile I found out, that it works fine with non imported functions like console.log(). It's only Puppeteer (or probably any imported module).

Heres a Link to my Log File.

[mjbvz]

Can you share a copy of your project?

[m1212e]

Sure thing, here you go:
project.zip

[jtsom]

I'm also seeing this on an Angular 10 application. I created a new Angular app:

ng new ng10-test-app

Added a class:

export class Contact {
  name: string;
}

and tried to use it. VSCode doesn't find and suggest what the import for my class:

VSCode doesn't show any fix-its for adding an import for my class.

There is an error (repeated actually) in the Log (Window) output window:

[2020-06-30 17:37:02.038] [renderer1] [error] <semantic> TypeScript Server Error (4.0.0-dev.20200629)
No Project.
Error: No Project.
    at Object.ThrowNoProject (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:145281:23)
    at ScriptInfo.getDefaultProject (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:146062:46)
    at ProjectService.doEnsureDefaultProjectForFile (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:148858:48)
    at ProjectService.ensureDefaultProjectForFile (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:148853:75)
    at IOSession.Session.getFileAndProjectWorker (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:152892:87)
    at IOSession.Session.getFileAndProject (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:152875:29)
    at IOSession.Session.getApplicableRefactors (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153331:31)
    at Session.handlers.ts.createMapFromTemplate._a.<computed> (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:152122:61)
    at /Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153634:88
    at IOSession.Session.executeWithRequestId (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153625:28)
    at IOSession.Session.executeCommand (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153634:33)
    at IOSession.Session.onMessage (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153658:35)
    at Interface.<anonymous> (/Users/john/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:155873:27)
    at Interface.emit (events.js:203:13)
    at Interface._onLine (readline.js:316:10)
    at Interface._normalWrite (readline.js:461:12)
    at Socket.ondata (readline.js:172:10)
    at Socket.emit (events.js:203:13)
    at addChunk (_stream_readable.js:295:12)
    at readableAddChunk (_stream_readable.js:276:11)
    at Socket.Readable.push (_stream_readable.js:210:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:166:17): Error: <semantic> TypeScript Server Error (4.0.0-dev.20200629)

[mjbvz]

@JackkGC Thanks. Can you please provide specific steps to reproduce this using using the project? I see IntelliSense working fine in the TS file:

[m1212e]

It partially works. For example if you try to auto-complete the page.setViewport function a few lines below you'll hopefully be able to reproduce the error. Then trying the whole thing in a normal js file in the same directory with the exact same code should work.

Same issue as @jtsom in every Angular 10 application I create on different machines, both Windows and Mac. The biggest problems are plain-old-classes and interfaces. Oddly enough, not seeing the same issue with components (anything in module declarations)

[jtsom]

It's not so much intellisense not working, it's failing to automatically find other files that need to be imported (auto-import). Normally, in my example above, VSCode would have automatically added a

import { Contact } from '../contact';

or would offer, in the Fixes, to add the import. It does neither, except show the Typescript error

[mateusz-pietrzak]

Does intellisense starts working if you include let's say Contact class in any other file?

I noticed something similar with Angular 10, if file is not included in compilation it will not show up on intellisense, as soon as it's referenced anywhere it will start working.

[jtsom]

Again.. it's not really intellisense that's the issue, it's the fact that VSCode can't find the files to enable the auto import. Here's a little more of the layout of a sample:

Note that it's showing "no quick fixes available" .. that should be, and it used to be (something like) "... add import of Contact ...". Or ideally, it would have automatically added the import line as soon as I typed line 13.

I don't know if it's something to do with the way Angular changed the structure of the tsconfig files, or what the issue is.

[jtsom]

I did a quick test. Angular 10 moved to a "solution-style tsconfig.json" - https://angular.io/guide/migration-solution-style-tsconfig.

In the tsconfig.app.json, a standard Angular 10 app has:

{
  "extends": "./tsconfig.base.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "types": []
  },
  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ]
}

Once I changed the include like to be:

  "include": [
    "src/**/*.d.ts",
    "src/**/*.ts"
  ]

The quick fix now works, as well as the auto-import of the file:

So this must be a result of this change to the tsconfig files in Angular 10.

Off to open an issue there...

[jtsom]

While adding the item to the tsconfig.app.json does fix the auto-import and quick fix, it horribly breaks building the application, so that's not an acceptable solution.

This does look like an Angular 10 issue: angular/angular-cli#18040