fix(fusuma): check slides dir

Author: hiroppy

packages/fusuma/src/tasks/index.js

@@ -16,6 +16,11 @@ async function tasks({ type, options }) {
   const outputDirPath = join(basePath, outputDir || 'dist');
   let config = {};
 
+  if (type !== 'init' && !existsSync(inputDirPath)) {
+    error('preparation', '"slides" directory not found');
+    process.exit(1);
+  }
+
   try {
     config = await searchFusumarc(basePath, fusumarc);
   } catch (e) {

packages/playground/issues/noSlide/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "noslide",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "fusuma start"
+  },
+  "author": "hiroppy <git@hiroppy.me> (https://hiroppy.me/)",
+  "license": "MIT"
+}