Install @types quick fix can erase node modules installed with yarn

[mjbvz]

TypeScript Version: 2.7.0-dev.20180127

Search Terms:

• Install @types quick fix
• Yarn

microsoft/vscode#42535

Code

1. In a new project:

2. $ npm init -y
   $ yarn request lodash
   

3. In a ts file in the project:

   import * as r from 'request'

4. Trigger quick fix to install @types for request

Expected behavior:
Installs @types/request

Actual behavior:
Installs but also seems to erase other installed node_modules. See microsoft/vscode#42535

Related Issues:

• Support yarn in Install @types/<package> code fix #19269

[octref]

@mjbvz Should be yarn add request lodash.

[mhegazy]

Currently the install action uses npm install -D. Yarn support is tracked by #19269

[typescript-bot]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.