Prettier is used as the default formatter in Bit's official envs. To learn how to use Prettier in an env that uses a different formatter, see Prettier configuration.
Prettier uses the same standard commands used by all formatters.
Run the following to format all components in your workspace:
$bit format 
Run the following to format only new or modified components in your workspace:
$bit format --changed 
Run the following to format a specific component:
$bit format ui/text 
Run the following to check for components that needs to be formatted:
$bit format --check 
The output is similar to the following:
my-org.my-scope/ui/text
issues found in the following files:
text.composition.tsx
text.tsx
issues found in the following files:
text.composition.tsx
text.tsx
Formatting during build
The formatter does not run during the build process. As a general rule, the build process should not modify your components' source code.