Global options

These options work with any Fern CLI command to control logging and get help.

help

Use the --help option with any Fern CLI command to see an explanation and available options.

$
fern add --help
>
fern add <generator>
>
>
Add a code generator to generators.yml
>
>
Positionals:
>
  generator                                                [string] [required]
>
>
Options:
>
  --help     Show help                                               [boolean]
>
  --log-level    [choices: "debug", "info", "warn", "error"] [default: "info"]
>
  --api      Only run the command on the provided API                 [string]
>
  --group    Add the generator to the specified group                 [string]

log-level

Use the --log-level option to set the verbosity of Fern’s logging output. The default level is info.

Available levels (from most to least verbose):

• debug: Debug messages, informational messages, warnings, and errors
• info: Informational messages, warnings, and errors
• warn: Warnings and errors only
• error: Error messages only

$
fern generate --log-level debug