Extract rule: template-attribute-indentation

README.md

@@ -352,13 +352,14 @@ rules in templates can be disabled with eslint directives with mustache or html
 
 ### Stylistic Issues
 
-| Name                                                               | Description                                                    | 💼 | 🔧 | 💡 |
-| :----------------------------------------------------------------- | :------------------------------------------------------------- | :- | :- | :- |
-| [order-in-components](docs/rules/order-in-components.md)           | enforce proper order of properties in components               |    | 🔧 |    |
-| [order-in-controllers](docs/rules/order-in-controllers.md)         | enforce proper order of properties in controllers              |    | 🔧 |    |
-| [order-in-models](docs/rules/order-in-models.md)                   | enforce proper order of properties in models                   |    | 🔧 |    |
-| [order-in-routes](docs/rules/order-in-routes.md)                   | enforce proper order of properties in routes                   |    | 🔧 |    |
-| [template-attribute-order](docs/rules/template-attribute-order.md) | enforce consistent ordering of attributes in template elements |    |    |    |
+| Name                                                                           | Description                                                                    | 💼 | 🔧 | 💡 |
+| :----------------------------------------------------------------------------- | :----------------------------------------------------------------------------- | :- | :- | :- |
+| [order-in-components](docs/rules/order-in-components.md)                       | enforce proper order of properties in components                               |    | 🔧 |    |
+| [order-in-controllers](docs/rules/order-in-controllers.md)                     | enforce proper order of properties in controllers                              |    | 🔧 |    |
+| [order-in-models](docs/rules/order-in-models.md)                               | enforce proper order of properties in models                                   |    | 🔧 |    |
+| [order-in-routes](docs/rules/order-in-routes.md)                               | enforce proper order of properties in routes                                   |    | 🔧 |    |
+| [template-attribute-indentation](docs/rules/template-attribute-indentation.md) | enforce proper indentation of attributes and arguments in multi-line templates |    |    |    |
+| [template-attribute-order](docs/rules/template-attribute-order.md)             | enforce consistent ordering of attributes in template elements                 |    |    |    |
 
 ### Testing
 

docs/rules/template-attribute-indentation.md

@@ -0,0 +1,91 @@
+# ember/template-attribute-indentation
+
+<!-- end auto-generated rule header -->
+
+Migrated from [ember-template-lint/attribute-indentation](https://github.com/ember-template-lint/ember-template-lint/blob/master/docs/rule/attribute-indentation.md).
+
+## Rule Details
+
+This rule requires the positional params, attributes, and block params of helpers/components to be indented by moving them to multiple lines when the open invocation has more than 80 characters (configurable).
+
+## Configuration
+
+<!-- begin auto-generated rule options list -->
+
+| Name                      | Type    | Choices                      |
+| :------------------------ | :------ | :--------------------------- |
+| `as-indentation`          |         | `attribute`, `closing-brace` |
+| `element-open-end`        |         | `new-line`, `last-attribute` |
+| `indentation`             | Integer |                              |
+| `mustache-open-end`       |         | `new-line`, `last-attribute` |
+| `open-invocation-max-len` | Integer |                              |
+| `process-elements`        | Boolean |                              |
+
+<!-- end auto-generated rule options list -->
+
+## Examples
+
+Examples of **incorrect** code for this rule:
+
+Non-block form (> 80 characters):
+
+```hbs
+{{employee-details firstName=firstName lastName=lastName age=age avatarUrl=avatarUrl}}
+```
+
+Block form (> 80 characters):
+
+```hbs
+{{#employee-details
+  firstName=firstName lastName=lastName age=age avatarUrl=avatarUrl
+  as |employee|
+}}
+  {{employee.fullName}}
+{{/employee-details}}
+```
+
+HTML element (> 80 characters):
+
+```hbs
+<input disabled id='firstName' value={{firstName}} class='input-field first-name' type='text' />
+```
+
+Examples of **correct** code for this rule:
+
+Non-block form:
+
+```hbs
+{{employee-details firstName=firstName lastName=lastName age=age avatarUrl=avatarUrl}}
+```
+
+Block form:
+
+```hbs
+{{#employee-details
+  firstName=firstName lastName=lastName age=age avatarUrl=avatarUrl
+  as |employee|
+}}
+  {{employee.fullName}}
+{{/employee-details}}
+```
+
+HTML element:
+
+```hbs
+<input disabled id='firstName' value={{firstName}} class='input-field first-name' type='text' />
+```
+
+Short invocations (< 80 characters) are allowed on a single line:
+
+```hbs
+{{employee-details firstName=firstName lastName=lastName}}
+```
+
+## Options
+
+- `open-invocation-max-len` (integer, default `80`): Maximum length of the opening invocation before attributes must be on separate lines.
+- `indentation` (integer, default `2`): Number of spaces for attribute indentation.
+- `process-elements` (boolean, default `true`): Also validate indentation of HTML/SVG element attributes.
+- `element-open-end` (`"new-line"` | `"last-attribute"`, default `"new-line"`): Position of the closing `>` bracket.
+- `mustache-open-end` (`"new-line"` | `"last-attribute"`, default `"new-line"`): Position of the closing `}}` braces.
+- `as-indentation` (`"attribute"` | `"closing-brace"`, default `"closing-brace"`): Position of `as |param|` block params relative to attributes or closing brace.