Extract rule: template-block-indentation

Author: NullVoxPopuli

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-order](docs/rules/template-attribute-order.md)     | enforce consistent ordering of attributes in template elements         |    |    |    |
+| [template-block-indentation](docs/rules/template-block-indentation.md) | enforce consistent indentation for block statements and their children |    |    |    |
 
 ### Testing
 

docs/rules/template-block-indentation.md

@@ -0,0 +1,67 @@
+# ember/template-block-indentation
+
+<!-- end auto-generated rule header -->
+
+Migrated from [ember-template-lint/block-indentation](https://github.com/ember-template-lint/ember-template-lint/blob/master/docs/rule/block-indentation.md).
+
+## Rule Details
+
+Forces valid indentation for blocks and their children.
+
+1. Forces block begin and block end statements to be at the same indentation level, when not on one line.
+2. Forces children of all blocks to start at a single indentation level deeper.
+
+## Configuration
+
+<!-- begin auto-generated rule options list -->
+
+| Name             | Type    |
+| :--------------- | :------ |
+| `ignoreComments` | Boolean |
+| `indentation`    | Integer |
+
+<!-- end auto-generated rule options list -->
+
+## Examples
+
+Examples of **incorrect** code for this rule:
+
+```hbs
+{{#each foo as |bar|}}{{/each}}
+```
+
+```hbs
+<div>
+  <p>{{t 'greeting'}}</p>
+</div>
+```
+
+```hbs
+<div>
+  <p>{{t 'Stuff here!'}}</p></div>
+```
+
+Examples of **correct** code for this rule:
+
+```hbs
+{{#each foo as |bar|}}
+  {{bar.name}}
+{{/each}}
+```
+
+```hbs
+<div>
+  <p>{{t 'greeting'}}</p>
+</div>
+```
+
+## Options
+
+- Integer (e.g., `2`, `4`): Number of spaces for indentation.
+- `"tab"`: Use tab-style indentation (1 character).
+- Object:
+  - `indentation` (integer, default `2`): Number of spaces to indent.
+  - `ignoreComments` (boolean, default `false`): Skip indentation checking for comments.
+
+When no option is specified, the rule reads `indent_size` from .editorconfig (if present).
+If no .editorconfig is found, the default is `2` spaces.