Merge pull request #239 from Sebastian-Webster/visual-cpp-runtime

Throw informative error message when Visual C++ Redistributable is not installed on Windows

Author: Sebastian-Webster

src/libraries/Executor.ts

@@ -194,7 +194,14 @@ class Executor {
                         }
 
                         if (code) {
-                            const errorMessage = `The database exited early with code ${code}. The error log was:\n${errorLog}\nThe error string was: "${errorString}".`
+                            let errorMessage: string = ''
+
+                            if (os.platform() === 'win32' && code === 3221225781) {
+                                errorMessage = `The MySQL database exited early with code 3221225781. A possible cause is that the Microsoft Visual C++ Redistributable Package is not installed. Please refer to the following link for this package's requirements on your system - this may help solve this error: https://github.com/Sebastian-Webster/mysql-memory-server-nodejs/blob/v1.12.0/docs/SUPPORTED_MYSQL_DOWNLOADS.md#required-dependencies. If you are sure you have this installed, check the following for more details: The error log was:\n${errorLog}\nThe error string was: "${errorString}".`
+                            } else {
+                                errorMessage = `The database exited early with code ${code}. The error log was:\n${errorLog}\nThe error string was: "${errorString}".`
+                            }
+
                             this.logger.error(errorMessage)
                             return reject(errorMessage)
                         }