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sidebar_position: 9
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# Good to know

## sern.config.json
<p>A sern.config.json, although not necessary, allows your project to communicate with our cli.</p>

For example, when installing typescript plugins, the language property is necessary to install from our
[open source repository](https://github.com/sern-handler/awesome-plugins). <br />

Using the cli and running `sern init --sync` on pre-existing projects should install this json file in the root directory given.
Or, if this is a brand-new project, `sern init` automatically installs it.

```json
{
  "language": "typescript",
  "paths": {
    "base": "src",
    "commands": "commands"
  }
}
```