Merge pull request #199 from merlinpatt/patch-1

[Docs] Add ignoreNonDOM option

Author: ljharb

docs/rules/aria-role.md

@@ -7,13 +7,26 @@ Elements with ARIA roles must use a valid, non-abstract ARIA role. A reference t
 
 ## Rule details
 
-This rule takes no arguments.
+This rule takes one optional object argument of type object:
+
+```
+{
+    "rules": {
+        "jsx-a11y/aria-role": [ 2, {
+            "ignoreNonDOM": true
+        }],
+    }
+}
+```
+
+For the `ignoreNonDOM` option, this determines if developer created components are checked.
 
 ### Succeed
 ```jsx
 <div role="button"></div>     <!-- Good: "button" is a valid ARIA role -->
 <div role={role}></div>       <!-- Good: role is a variable & cannot be determined until runtime. -->
 <div></div>                   <!-- Good: No ARIA role -->
+<Foo role={role}></Foo>       <!-- Good: ignoreNonDOM is set to true -->
 ```
 
 ### Fail
@@ -22,4 +35,5 @@ This rule takes no arguments.
 <div role="datepicker"></div> <!-- Bad: "datepicker" is not an ARIA role -->
 <div role="range"></div>      <!-- Bad: "range" is an _abstract_ ARIA role -->
 <div role=""></div>           <!-- Bad: An empty ARIA role is not allowed -->
+<Foo role={role}></Foo>       <!-- Bad: ignoreNonDOM is set to false or not set -->
 ```