[MM-39428] Check for EBUSY, add retry logic and logging for writing to config (#1845)

src/common/config/index.ts

@@ -179,7 +179,11 @@ export default class Config extends EventEmitter {
         try {
             this.writeFile(this.configFilePath, this.localConfigData, (error: NodeJS.ErrnoException | null) => {
                 if (error) {
-                    throw new Error(error.message);
+                    if (error.code === 'EBUSY') {
+                        this.saveLocalConfigData();
+                    } else {
+                        this.emit('error', error);
+                    }
                 }
                 this.emit('update', this.combinedData);
                 this.emit('synchronize');

src/main/main.ts

@@ -166,6 +166,9 @@ async function initializeConfig() {
             config.on('update', handleConfigUpdate);
             config.on('synchronize', handleConfigSynchronize);
             config.on('darkModeChange', handleDarkModeChange);
+            config.on('error', (error) => {
+                log.error(error);
+            });
             handleConfigUpdate(configData);
 
             // can only call this before the app is ready