TypeScript Intellisense very slow with some projects

[dbaeumer]

From @AmrN on June 7, 2016 19:19

• VSCode Version: 1.2.0
• OS Version: Ubuntu 14.04

I'm using angular2-webpack-starter, and after cloning the repo and doing an npm install typescript intellisense is extremely slow.
One thing I've noticed is that the exclude list paths in tsconfig.json are written like this:

{
  "exclude": [
    "./node_modules",
    "./typings/main.d.ts",
    "./typings/main"
  ]
}

But once I remove the dot slashes and restart VS Code things seem to be fixed and intellisense works fast:

{
  "exclude": [
    "node_modules",
    "typings/main.d.ts",
    "typings/main"
  ]
}

I've reported the issue PatrickJS/PatrickJS-starter#660 but it seems the problem lies with VS Code since I've tried Atom with its typescript plugin and it works properly with that starter by default.

Copied from original issue: microsoft/vscode#7349

[mhegazy]

@yuit can you take a look. looks related to #8998

[yuit]

I believe it is the same issue as #8998. We used to not recognize relative path used in "exclude" or "outdir" (which get include in "exclude" property") the fix is in the master already (PR #9025)