feat: exit early if the workdir does not exists; proper exit codes

Author: felipelube

src/index.js

@@ -1,18 +1,25 @@
 const { send } = require('micro');
 const { promisify } = require('util');
+const { existsSync } = require("fs")
 
 const validateReq = require('./lib/validateReq');
 const exec = promisify(require('child_process').exec);
 
+const workDir = process.env.NSW_WORK_DIR || '/var/www/html';
+const scriptName = process.env.NSW_SCRIPT_NAME || 'build';
+const timeout = process.env.NSW_TIMEOUT || 30 * 1000;
+
 // CRITICAL: exit early if no token is defined.
 if (!process.env.NSW_TOKEN) {
   console.error('NO TOKEN DEFINED, EXITING.');
-  process.exit(1);
+  process.exit(9);
 }
 
-const workDir = process.env.NSW_WORK_DIR || '/var/www/html';
-const scriptName = process.env.NSW_SCRIPT_NAME || 'build';
-const timeout = process.env.NSW_TIMEOUT || 30 * 1000;
+// CRITICAL: exit early if the workDir does not exists
+if (!existsSync(workDir)) {
+  console.error('WORKDIR DOES NOT EXISTS, EXITING.');
+  process.exit(1);
+}
 
 const handleErrors = fn => async (req, res) => {
   try {