# Performance — npm / pnpm / yarn

Source: https://www.geekswithgeeks.com/en/package-managers/package-managers-20

> Use Performance as part of npm / pnpm / yarn.

## The essential idea

**Performance** is a practical part of npm / pnpm / yarn. Start with the problem, then identify the input, transformation, and expected result.

## See the learning path

This topic is one step from source code to a useful checked result.

![Learning path for npm / pnpm / yarn.](assets/figures/package-managers/package-managers-learning-map.svg) — Figure 8.1 — Keep the full path visible.

## Common pitfall

Do not learn **Performance** by copying. Use a small experiment and feedback to check your explanation.

Quick check

**Quiz:** What is good practice for Performance?

- [x] Run one small example.
- [ ] Memorize without testing.
- [ ] Ignore feedback.

*Answer:* Run one small example.. Focused experiments reveal cause and effect.