Install delay, exit and exec modules.

app/lib/delay/index.js

@@ -0,0 +1,9 @@
+'use strict';
+
+function delay (ms) {
+	return new Promise((resolve) => {
+		setTimeout(resolve, ms);
+	});
+}
+
+module.exports = delay;

app/lib/delay/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "delay",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

app/lib/exec/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "exec",
+  "version": "1.0.0",
+  "description": "<a name=\"exec\"></a>",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

app/lib/exit/index.js

@@ -0,0 +1,13 @@
+'use strict';
+
+function exit (msg, code = 0) {
+	if (code === 0) {
+		console.log(msg);
+		process.exit();
+	} else {
+		console.error(msg);
+		process.exit(code);
+	}
+}
+
+module.exports = exit;

app/lib/exit/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "exit",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

app/package-lock.json

@@ -1458,6 +1458,9 @@
         }
       }
     },
+    "delay": {
+      "version": "file:lib/delay"
+    },
     "delayed-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
@@ -2079,6 +2082,9 @@
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
       "dev": true
     },
+    "exec": {
+      "version": "file:lib/exec"
+    },
     "exec-sh": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/exec-sh/-/exec-sh-0.3.2.tgz",
@@ -2121,6 +2127,9 @@
       "integrity": "sha1-BmDjUlouidnkRhKUQMJy7foktSk=",
       "dev": true
     },
+    "exit": {
+      "version": "file:lib/exit"
+    },
     "expand-brackets": {
       "version": "2.1.4",
       "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-2.1.4.tgz",

app/package.json

@@ -41,7 +41,10 @@
     "arduino": "file:lib/arduino",
     "async": "^2.6.1",
     "capture": "file:lib/capture",
+    "delay": "file:lib/delay",
     "display": "file:lib/display",
+    "exec": "file:lib/exec",
+    "exit": "file:lib/exit",
     "ffmpeg": "file:lib/ffmpeg",
     "ffprobe": "file:lib/ffprobe",
     "fs-extra": "^7.0.1",