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138 changes: 126 additions & 12 deletions README.md
Original file line number Diff line number Diff line change
@@ -1,25 +1,129 @@
[![Emulsify Design System](https://user-images.githubusercontent.com/409903/170579210-327abcdd-2c98-4922-87bb-36446a4cc013.svg)](https://www.emulsify.info/)
![npm](https://img.shields.io/npm/dm/@emulsify/cli?style=flat-square)

# emulsify-cli
# Emulsify CLI

Command line interface for Emulsify.
Command line interface for Emulsify projects.

## Installation

This project is deployed to [npm](https://www.npmjs.com/package/@emulsify/cli). In order to use this CLI, install it as a global dependency:
Emulsify CLI requires Node 24 or newer.

Install Emulsify CLI globally from [npm](https://www.npmjs.com/package/@emulsify/cli):

```bash
npm install -g @emulsify/cli
```

## Usage

For more information on how to use emulsify-cli, please see the [usage documentation](https://www.emulsify.info/docs/supporting-projects/emulsify-cli/emulsify-cli-usage).
Run `emulsify --help` for the current command list.

### Commands

| Command | Alias | Description |
| ----------------------------------- | ----------------------------- | ----------------------------------------------------------------- |
| `emulsify init [name] [path]` | | Initializes an Emulsify project from a starter. |
| `emulsify system list` | `emulsify system ls` | Lists built-in systems available for installation. |
| `emulsify system install [name]` | | Installs a system in the current Emulsify project. |
| `emulsify component list` | `emulsify component ls` | Lists components available from the installed system and variant. |
| `emulsify component install [name]` | `emulsify component i [name]` | Installs one component from the installed system and variant. |
| `emulsify component create [name]` | `emulsify component c [name]` | Creates a local component in the current Emulsify project. |

### Initialize A Project

`emulsify init [name] [path]` clones a starter, writes the project configuration, installs dependencies, runs the starter init hook when present, and removes the starter Git history.

Options:

- `--machineName <machineName>`: Sets the machine-friendly project name. When omitted, Emulsify CLI derives it from the project name.
- `--starter <repository>`: Uses a specific starter repository.
- `--checkout <commit/branch/tag>`: Checks out a specific starter commit, branch, or tag.
- `--platform <platform>`: Sets the project platform when auto-detection is unavailable or should be overridden. For Drupal projects, pass `drupal`.
- `--yes`: Accepts default init values for missing options without prompting.

Current starter repositories:

- `https://github.com/emulsify-ds/emulsify-starter`
- `https://github.com/emulsify-ds/emulsify-drupal-starter`

Examples:

```bash
emulsify init "My Project" ./projects
emulsify init "My Theme" ./web/themes/custom --platform drupal --yes
emulsify init "My Project" ./projects --starter https://github.com/emulsify-ds/emulsify-starter --checkout main
```

### Systems

`emulsify system list` lists the built-in systems that Emulsify CLI can install. `emulsify system ls` is the same command.

```bash
emulsify system list
emulsify system ls
```

`emulsify system install [name]` installs a system in the current Emulsify project. Use `compound` to install the built-in Compound system. The command installs required components by default.

Options:

- `--repository <repository>`: Installs a system from a specific Git repository.
- `--checkout <commit/branch/tag>`: Checks out a specific system commit, branch, or tag. This is required when `--repository` is used.
- `--all`: Installs all available components from the system instead of only required components.

### Customizing component templates
Examples:

```bash
emulsify system install compound
emulsify system install compound --all
emulsify system install --repository https://github.com/example/example-system.git --checkout v1.0.0
```

Projects can override the built-in `component create` templates by adding files under `.cli/templates/` at the Emulsify project root. Overrides replace only the known artifacts that the CLI already generates; they do not add extra files or change which files are created.
### Components

`emulsify component list` lists components available from the installed system and variant. `emulsify component ls` is the same command.

```bash
emulsify component list
emulsify component ls
```

`emulsify component install [name]` installs one component from the installed system and variant. `emulsify component i [name]` is the same command.

Options:

- `--force`: Replaces an installed component.
- `--all`: Installs all available components instead of one named component.

Examples:

```bash
emulsify component install button
emulsify component i card --force
emulsify component install --all
```

`emulsify component create [name]` creates a local component in the current Emulsify project. `emulsify component c [name]` is the same command.

Options:

- `--directory <directory>`: Sets the variant structure directory where the component is created.
- `--format <format>`: Sets the component format. Supported values are `default` and `sdc`.
- `--yes`: Replaces an existing component without an overwrite confirmation prompt.

In non-interactive environments, pass both `--directory` and `--format`.

Examples:

```bash
emulsify component create card --directory base --format default
emulsify component create teaser --directory molecules --format sdc --yes
```

### Component Template Overrides

Projects can override the built-in `component create` templates by adding component template override files under `.cli/templates/` at the Emulsify project root. Overrides replace only the known artifacts that Emulsify CLI already generates; they do not add extra files or change which files are created.

Default component overrides:

Expand All @@ -36,13 +140,23 @@ SDC component overrides:
- `.cli/templates/sdc/component.js`
- `.cli/templates/sdc/component.stories.js`

Override files can use double-brace tokens. Supported tokens are `{{ filename }}`, `{{ className }}`, `{{ camelName }}`, `{{ snakeName }}`, `{{ humanName }}`, `{{ directory }}`, and `{{ format }}`. Unknown tokens are left unchanged and logged as warnings.
Override files can use double-brace tokens:

- `{{ filename }}`
- `{{ className }}`
- `{{ camelName }}`
- `{{ snakeName }}`
- `{{ humanName }}`
- `{{ directory }}`
- `{{ format }}`

For each generated artifact, Emulsify CLI first checks for the matching override file. If the override is missing, the built-in template is used. If the override exists but is empty, the built-in template is used and a warning is logged. Unknown tokens are left unchanged and logged as warnings. Partial override sets are supported, so a project can override only `component.twig` and keep the built-in SCSS, data, and story templates. Extra arbitrary files are not generated by component template overrides.

For each generated artifact, the CLI first checks for the matching override file. If the override is missing or empty, the built-in template is used. Partial override sets are supported, so a project can override only `component.twig` and keep the built-in SCSS, data, and story templates. Arbitrary extra files and template ejection helpers are future work.
For more documentation, see the [Emulsify CLI usage documentation](https://www.emulsify.info/docs/supporting-projects/emulsify-cli/emulsify-cli-usage).

## Development

Emulsify-cli is developed using TypeScript. You can find all of the source files in the `src` directory, which is organized in the following manner:
Emulsify CLI is developed using TypeScript. You can find all of the source files in the `src` directory, which is organized in the following manner:

- `src/index.ts` - uses Commander to compose the CLI.
- `src/handlers` - contains all functions that handle CLI commands, such as `emulsify init`.
Expand All @@ -54,7 +168,7 @@ Emulsify-cli is developed using TypeScript. You can find all of the source files

### Setup

- Install the version of node as specified in this project's `.nvmrc` file. If you are using nvm, simply run `nvm use`.
- Install the version of Node specified in this project's `.nvmrc` file. If you are using nvm, run `nvm use`.
- Clone this repository into a directory of your choosing.
- In the directory, run `npm install`.
- Build the project: `npm run build`, or watch: `npm run watch`.
Expand All @@ -63,7 +177,7 @@ Emulsify-cli is developed using TypeScript. You can find all of the source files
### Scripts

- `npm run build`: builds the project based on the configuration in `tsconfig.dist.json`.
- `npm run build-schema-types`: Compiles the json-schema definitions within this project into ts types.
- `npm run build-schema-types`: Compiles the JSON Schema definitions within this project into TypeScript types.
- `npm run watch`: watches the codebase, and re-compiles every time a change is made.
- `npm run format`: uses prettier to format all ts files within the codebase.
- `npm run lint`: runs the Jest test suite via the `test` script.
Expand All @@ -74,7 +188,7 @@ Emulsify-cli is developed using TypeScript. You can find all of the source files

## Deployment

This project is automatically built and deployed to NPM via the release GitHub Actions workflow. Pushes to `main` run `npm run build` and then `npm run semantic-release`.
This project is automatically built and deployed to npm via the release GitHub Actions workflow. Pushes to `main` run `npm run build` and then `npm run semantic-release`.

### Contributors

Expand Down
146 changes: 146 additions & 0 deletions docs/emulsify-info-cli-updates.md
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# Emulsify CLI Website Updates

Copy-ready updates for the emulsify.info Emulsify CLI usage page.

## Installation

Emulsify CLI requires Node 24 or newer.

Install Emulsify CLI globally with npm:

```bash
npm install -g @emulsify/cli
```

## Commands

| Command | Alias | Description |
| ----------------------------------- | ----------------------------- | ----------------------------------------------------------------- |
| `emulsify init [name] [path]` | | Initializes an Emulsify project from a starter. |
| `emulsify system list` | `emulsify system ls` | Lists built-in systems available for installation. |
| `emulsify system install [name]` | | Installs a system in the current Emulsify project. |
| `emulsify component list` | `emulsify component ls` | Lists components available from the installed system and variant. |
| `emulsify component install [name]` | `emulsify component i [name]` | Installs one component from the installed system and variant. |
| `emulsify component create [name]` | `emulsify component c [name]` | Creates a local component in the current Emulsify project. |

## Initialize A Project

`emulsify init [name] [path]` clones a starter, writes the project configuration, installs dependencies, runs the starter init hook when present, and removes the starter Git history.

Options:

- `--machineName <machineName>`: Sets the machine-friendly project name. When omitted, Emulsify CLI derives it from the project name.
- `--starter <repository>`: Uses a specific starter repository.
- `--checkout <commit/branch/tag>`: Checks out a specific starter commit, branch, or tag.
- `--platform <platform>`: Sets the project platform when auto-detection is unavailable or should be overridden. For Drupal projects, pass `drupal`.
- `--yes`: Accepts default init values for missing options without prompting.

Current starter repositories:

- `https://github.com/emulsify-ds/emulsify-starter`
- `https://github.com/emulsify-ds/emulsify-drupal-starter`

Examples:

```bash
emulsify init "My Project" ./projects
emulsify init "My Theme" ./web/themes/custom --platform drupal --yes
emulsify init "My Project" ./projects --starter https://github.com/emulsify-ds/emulsify-starter --checkout main
```

## Systems

`emulsify system list` lists the built-in systems that Emulsify CLI can install. `emulsify system ls` is the same command.

```bash
emulsify system list
emulsify system ls
```

`emulsify system install [name]` installs a system in the current Emulsify project. Use `compound` to install the built-in Compound system. The command installs required components by default.

Options:

- `--repository <repository>`: Installs a system from a specific Git repository.
- `--checkout <commit/branch/tag>`: Checks out a specific system commit, branch, or tag. This is required when `--repository` is used.
- `--all`: Installs all available components from the system instead of only required components.

Examples:

```bash
emulsify system install compound
emulsify system install compound --all
emulsify system install --repository https://github.com/example/example-system.git --checkout v1.0.0
```

## Components

`emulsify component list` lists components available from the installed system and variant. `emulsify component ls` is the same command.

```bash
emulsify component list
emulsify component ls
```

`emulsify component install [name]` installs one component from the installed system and variant. `emulsify component i [name]` is the same command.

Options:

- `--force`: Replaces an installed component.
- `--all`: Installs all available components instead of one named component.

Examples:

```bash
emulsify component install button
emulsify component i card --force
emulsify component install --all
```

`emulsify component create [name]` creates a local component in the current Emulsify project. `emulsify component c [name]` is the same command.

Options:

- `--directory <directory>`: Sets the variant structure directory where the component is created.
- `--format <format>`: Sets the component format. Supported values are `default` and `sdc`.
- `--yes`: Replaces an existing component without an overwrite confirmation prompt.

In non-interactive environments, pass both `--directory` and `--format`.

Examples:

```bash
emulsify component create card --directory base --format default
emulsify component create teaser --directory molecules --format sdc --yes
```

## Component Template Overrides

Projects can override the built-in `component create` templates by adding component template override files under `.cli/templates/` at the Emulsify project root. Overrides replace only the known artifacts that Emulsify CLI already generates; they do not add extra files or change which files are created.

Default component overrides:

- `.cli/templates/default/component.twig`
- `.cli/templates/default/component.scss`
- `.cli/templates/default/component.yml`
- `.cli/templates/default/component.stories.js`

SDC component overrides:

- `.cli/templates/sdc/component.twig`
- `.cli/templates/sdc/component.scss`
- `.cli/templates/sdc/component.component.yml`
- `.cli/templates/sdc/component.js`
- `.cli/templates/sdc/component.stories.js`

Override files can use double-brace tokens:

- `{{ filename }}`
- `{{ className }}`
- `{{ camelName }}`
- `{{ snakeName }}`
- `{{ humanName }}`
- `{{ directory }}`
- `{{ format }}`

For each generated artifact, Emulsify CLI first checks for the matching override file. If the override is missing, the built-in template is used. If the override exists but is empty, the built-in template is used and a warning is logged. Unknown tokens are left unchanged and logged as warnings. Partial override sets are supported, so a project can override only `component.twig` and keep the built-in SCSS, data, and story templates. Extra arbitrary files are not generated by component template overrides.
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