import { Appear } from 'mdx-deck'

Common Mistakes

Use real dependency

Using real database
Slow unit test

Write unit test

after everything done

Big codebase
Difficult to refactor
Found unexpected bug

Use `reflect.DeepEqual`

instead of `cmp.Diff`

Only tell equality
Cannot spot the difference between 2 types
Prove it!

import { CodeSurferLayout, CodeSurferColumnLayout, Code, Step, } from "code-surfer";