A pm block turns each package manager command into every other manager's. A block with no command, such as one that only runs ls, has nothing to turn, so every tab shows the same code.
Incorrect
npm
ls duck-feederpnpm
ls duck-feederyarn
ls duck-feederbun
ls duck-feeder```sh pm
ls duck-feeder
```Correct
npm
npm install duck-feederpnpm
pnpm add duck-feederyarn
yarn add duck-feederbun
bun add duck-feeder```sh pm
pnpm add duck-feeder
```