Unnecessary line deletion

[probablykasper]

Bug description

Whenever yarn logs to the console, it seems to log the escape sequence for deletes the line. In cases where that escape sequence doesn't work, the log looks like this:

Command

For the screenshot above, this is the command I ran:

yarn install --no-progress

What is the current behavior?
The "delete line" escape sequence appears whenever yarn logs to the console.

What is the expected behavior?
Only send the escape sequence when necessary.

Steps to Reproduce

1. I'm encountering this issue when using lazydocker, so install that, plus Docker and docker-compose.
2. Create package.json:

   {
     "private": true,
     "dependencies": {
       "express": "^4.17.0"
     }
   }

3. Create docker-compose.yml:

     yarn-bug:
       tty: true 
       container_name: yarn-bug
       build: .
       volumes:
         - ./:/usr/src/app

4. Create Dockerfile:

   FROM node:14.11-alpine
   WORKDIR /usr/src/app
   COPY package.json ./
   CMD ["yarn", "install"]
   

5. Run the lazydocker command
6. Click on the yarn-bug service
7. Press c and click on up

Environment

• Node Version: 14.11.0
• Yarn v1 Version: 1.22.5
• OS and version: macOS 10.14.6
• Docker image: node:14.11-alpine

[probablykasper]

This issue was mentioned in a comment of issue #1956.