fix

AppTest.js

@@ -19,7 +19,11 @@ const { InteractiveOptions } = require ('./dist/lib/index.js');
     { name: 'num', type: 'number', env: 'TEST_NUM' },
     { name: 'arr', type: 'array', env: 'TEST_ARR' },
     { name: 'fld', type: 'folder', env: 'TEST_FOLDER' }
-  ], { exit_on_interrupt: true, configs: [ 'test.json' ] });
+  ], {
+    exit_on_interrupt: true,
+    configs:           [ 'test.json' ],
+    error_callback:    console.log
+  });
   await reader.parse ();
   console.log (reader.serialize (true));
 }) ();

lib/InteractiveOptions.ts

@@ -75,8 +75,8 @@ export class InteractiveOptions extends Persistent {
       && Array.isArray (source_config.configs)
     ) {
       this.sources.push (new ConfigSource (
-        source_config.error_callback,
-        source_config.configs
+        source_config.configs,
+        source_config.error_callback
       ));
     }
     if (source_config.env !== false)
@@ -85,8 +85,8 @@ export class InteractiveOptions extends Persistent {
       this.sources.push (new ArgSource (source_config.error_callback));
     if (source_config.interactive !== false) {
       this.sources.push (new InteractiveSource (
-        source_config.error_callback,
-        exit_on_interrupt
+        exit_on_interrupt,
+        source_config.error_callback
       ));
     }
   }

lib/Sources/ConfigSource.ts

@@ -17,7 +17,7 @@ import { OptionSource } from './OptionSource';
 export class ConfigSource extends OptionSource {
   private _config_files: string[];
 
-  public constructor (error_callback?:ErrorCallback, config_files: string[]) {
+  public constructor (config_files: string[], error_callback?:ErrorCallback) {
     super (error_callback);
     this._config_files = config_files;
   }
@@ -55,6 +55,7 @@ export class ConfigSource extends OptionSource {
           data[key] = json[key];
       }
       catch (e) {
+        if (typeof this.error_callback !== 'undefined')
           this.error_callback ('*', `config file: ${f}`, e);
         continue;
       }

lib/Sources/InteractiveSource.ts

@@ -9,14 +9,15 @@
 /* eslint-disable no-process-exit */
 import { Confirm, Input, List, AutoComplete } from 'enquirer';
 import { OptionProcess, Option } from '../Option';
+import { ErrorCallback } from '../Types/ErrorCallback';
 import { OptionSource } from './OptionSource';
 
 export class InteractiveSource extends OptionSource {
   private _exit_on_interrupt: boolean;
 
   public constructor (
-    error_callback?:ErrorCallback,
-    exit_on_interrupt: boolean
+    exit_on_interrupt: boolean,
+    error_callback?:ErrorCallback
   ) {
     super (error_callback);
     this._exit_on_interrupt = exit_on_interrupt;