From 3bf433d0c4ec2555abdee98d5641451fed62bb42 Mon Sep 17 00:00:00 2001
From: Stephan Kaag <stephan@ka.ag>
Date: Fri, 10 Jan 2020 12:12:43 +0100
Subject: [PATCH] fix: raise error when a component/prefab doesn't return
 anything (#90)

---
 src/bb-components-build.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/bb-components-build.ts b/src/bb-components-build.ts
index 0b61779a..d667cfa9 100644
--- a/src/bb-components-build.ts
+++ b/src/bb-components-build.ts
@@ -49,7 +49,9 @@ const readComponents: () => Promise<
       try {
         const code: string = await readFile(`${srcDir}/${file}`, 'utf-8');
         // eslint-disable-next-line no-new-func
-        return Function(`return ${transpile(code)}`)();
+        const transpiledFunction = Function(`return ${transpile(code)}`)()
+        if (!transpiledFunction) throw(new Error('Component doesn\'t return anything'));
+        return transpiledFunction
       } catch (error) {
         error.file = file;
         throw error;
@@ -75,7 +77,9 @@ const readPrefabs: () => Promise<Prefab[]> = async (): Promise<Prefab[]> => {
       try {
         const code: string = await readFile(`${srcDir}/${file}`, 'utf-8');
         // eslint-disable-next-line no-new-func
-        return Function(`return ${code}`)();
+        const transpiledFunction = Function(`return ${code}`)()
+        if (!transpiledFunction) throw(new Error('Prefab doesn\'t return anything'));
+        return transpiledFunction
       } catch (error) {
         error.file = file;
         throw error;