Added example of changing existing React.FC code

docs/architecture-decisions/adr006-avoid-react-fc.md

@@ -1 +1,28 @@
+# ADR006: Avoid React.FC
 
+## Context
+
+Facebook has removed ```React.FC``` from their base template for a Typescript project. The reason for this was that it was found to be an unnecessary feature with next to no benefits in combination with a few downsides.
+
+The main reasons were:
+- **children props** were implicitly added
+- **Generic Type** lacked support
+
+## Decision
+
+To keep our codebase up to date, we have decided that React.FC should be avoided in our codebase when adding new code.
+
+Here is an example:
+````
+type MyType = { text: string }
+
+// avoid React.FC
+const ComponentWithReactFC = React.FC<MyType> = ({text} => <div>{text}</div>)
+
+// do this instead
+const ComponentWithoutReactFC = ({text} : MyType) => <div>{text}</div>
+````
+
+## Consequences
+
+We will gradually remove the current usage of React.FC from our codebase.