tidy usage of block.has_content()

src/compiler/compile/render_dom/Block.ts

@@ -411,9 +411,8 @@ export default class Block {
 		return body;
 	}
 
-	has_content(ignore_dev?: boolean) {
+	has_content() {
-		return (!ignore_dev && this.renderer.options.dev) ||
+		return this.first ||
-			this.first ||
 			this.event_listeners.length > 0 ||
 			this.chunks.intro.length > 0 ||
 			this.chunks.outro.length > 0  ||

src/compiler/compile/render_dom/index.ts

@@ -264,7 +264,7 @@ export default function dom(
 		args.push(x`$$props`);
 	}
 
-	const has_create_fragment = block.has_content();
+	const has_create_fragment = component.compile_options.dev || block.has_content();
 	if (has_create_fragment) {
 		body.push(b`
 			function create_fragment(#ctx) {

src/compiler/compile/render_dom/wrappers/InlineComponent/index.ts

@@ -154,7 +154,7 @@ export default class InlineComponentWrapper extends Wrapper {
 
 		// removing empty slot
 		for (const slot of this.slots.keys()) {
-			if (!this.slots.get(slot).block.has_content(true)) {
+			if (!this.slots.get(slot).block.has_content()) {
 				this.slots.delete(slot);
 			}
 		}