Revert "feat: Enable type checking of component children"

This reverts commit 19aa2a9.

This won't work, because vhtml handles the `props.children` attribute in
a way different from how TypeScript expects things.

TypeScript believes that:

- A component with no child receives props.children === undefined
- A component with one child receives props.children === typeof child
- A component with multiple children receives [...children]

However, vhtml always wraps children in an array, even if there is only
0 or 1 child.

Because of this, enforcing strict type checking on children would result
in incorrect type checks that could be actively harmful.

See more discussion and example at:

- developit/vhtml#19 (comment)

src/generate-types.ts

@@ -24,9 +24,8 @@ function normalizeAttributeType(attrType: string): string {
   // string
   if (/EventHandler/i.test(attrType)) return "string";
 
-  // vhtml doesn't have a distinct node type--the serializer accepts any value.
-  // (arrays of any depth are flattened and concatenated)
-  if (attrType === "ReactNode") return "any";
+  // vhtml doesn't have a distinct node type--all components become strings.
+  if (attrType === "ReactNode") return "string";
 
   // vhtml doesn't convert style objects to string, so CSSProperties isn't
   // supported.
@@ -263,9 +262,6 @@ function generateJsxTypesForVhtml(
       // A functional pseudo-component returns a string as "element"
       writer.writeLine(`type Element = string;`);
 
-      // Enable strict type checking for children (TypeScript 2.3+)
-      writer.writeLine(`interface ElementChildrenAttribute { children: {}; }`);
-
       writer.writeLine(intrinsicElementsInterface.getText());
       extractedInterfaceNodes.forEach((node) => {
         // If the interface has no properties, convert it to a type alias, using