diff --git a/packages/fileeditor-extension/src/commands.ts b/packages/fileeditor-extension/src/commands.ts
index a9f369b8e649..59b516477596 100644
--- a/packages/fileeditor-extension/src/commands.ts
+++ b/packages/fileeditor-extension/src/commands.ts
@@ -128,19 +128,6 @@ export namespace Commands {
     tracker: WidgetTracker<IDocumentWidget<FileEditor>>,
     browserFactory: IFileBrowserFactory
   ) {
-    // Add a command to change font size.
-    addChangeFontSizeCommand(commands, config, settingRegistry, id);
-
-    addLineNumbersCommand(commands, config, settingRegistry, id, isEnabled);
-
-    addWordWrapCommand(commands, config, settingRegistry, id, isEnabled);
-
-    addChangeTabsCommand(commands, config, settingRegistry, id);
-
-    addMatchBracketsCommand(commands, config, settingRegistry, id, isEnabled);
-
-    addAutoClosingBracketsCommand(commands, config, settingRegistry, id);
-
     addCreateConsoleCommand(commands, tracker, isEnabled);
 
     addRunCodeCommand(commands, tracker, isEnabled);
@@ -156,172 +143,6 @@ export namespace Commands {
     addCreateNewMarkdownCommand(commands, browserFactory);
   }
 
-  /**
-   * Add a command to change font size for File Editor
-   */
-  export function addChangeFontSizeCommand(
-    commands: CommandRegistry,
-    config: CodeEditor.IConfig,
-    settingRegistry: ISettingRegistry,
-    id: string
-  ) {
-    commands.addCommand(CommandIDs.changeFontSize, {
-      execute: args => {
-        const delta = Number(args['delta']);
-        if (Number.isNaN(delta)) {
-          console.error(
-            `${CommandIDs.changeFontSize}: delta arg must be a number`
-          );
-          return;
-        }
-        const style = window.getComputedStyle(document.documentElement);
-        const cssSize = parseInt(
-          style.getPropertyValue('--jp-code-font-size'),
-          10
-        );
-        const currentSize = config.fontSize || cssSize;
-        config.fontSize = currentSize + delta;
-        return settingRegistry
-          .set(id, 'editorConfig', (config as unknown) as JSONObject)
-          .catch((reason: Error) => {
-            console.error(`Failed to set ${id}: ${reason.message}`);
-          });
-      },
-      label: args => args['name'] as string
-    });
-  }
-
-  /**
-   * Add the Line Numbers command
-   */
-  export function addLineNumbersCommand(
-    commands: CommandRegistry,
-    config: CodeEditor.IConfig,
-    settingRegistry: ISettingRegistry,
-    id: string,
-    isEnabled: () => boolean
-  ) {
-    commands.addCommand(CommandIDs.lineNumbers, {
-      execute: () => {
-        config.lineNumbers = !config.lineNumbers;
-        return settingRegistry
-          .set(id, 'editorConfig', (config as unknown) as JSONObject)
-          .catch((reason: Error) => {
-            console.error(`Failed to set ${id}: ${reason.message}`);
-          });
-      },
-      isEnabled,
-      isToggled: () => config.lineNumbers,
-      label: 'Line Numbers'
-    });
-  }
-
-  /**
-   * Add the Word Wrap command
-   */
-  export function addWordWrapCommand(
-    commands: CommandRegistry,
-    config: CodeEditor.IConfig,
-    settingRegistry: ISettingRegistry,
-    id: string,
-    isEnabled: () => boolean
-  ) {
-    type wrappingMode = 'on' | 'off' | 'wordWrapColumn' | 'bounded';
-
-    commands.addCommand(CommandIDs.lineWrap, {
-      execute: args => {
-        config.lineWrap = (args['mode'] as wrappingMode) || 'off';
-        return settingRegistry
-          .set(id, 'editorConfig', (config as unknown) as JSONObject)
-          .catch((reason: Error) => {
-            console.error(`Failed to set ${id}: ${reason.message}`);
-          });
-      },
-      isEnabled,
-      isToggled: args => {
-        const lineWrap = (args['mode'] as wrappingMode) || 'off';
-        return config.lineWrap === lineWrap;
-      },
-      label: 'Word Wrap'
-    });
-  }
-
-  /**
-   * Add command for changing tabs size or type in File Editor
-   */
-  export function addChangeTabsCommand(
-    commands: CommandRegistry,
-    config: CodeEditor.IConfig,
-    settingRegistry: ISettingRegistry,
-    id: string
-  ) {
-    commands.addCommand(CommandIDs.changeTabs, {
-      label: args => args['name'] as string,
-      execute: args => {
-        config.tabSize = (args['size'] as number) || 4;
-        config.insertSpaces = !!args['insertSpaces'];
-        return settingRegistry
-          .set(id, 'editorConfig', (config as unknown) as JSONObject)
-          .catch((reason: Error) => {
-            console.error(`Failed to set ${id}: ${reason.message}`);
-          });
-      },
-      isToggled: args => {
-        const insertSpaces = !!args['insertSpaces'];
-        const size = (args['size'] as number) || 4;
-        return config.insertSpaces === insertSpaces && config.tabSize === size;
-      }
-    });
-  }
-
-  /**
-   * Add the Match Brackets command
-   */
-  export function addMatchBracketsCommand(
-    commands: CommandRegistry,
-    config: CodeEditor.IConfig,
-    settingRegistry: ISettingRegistry,
-    id: string,
-    isEnabled: () => boolean
-  ) {
-    commands.addCommand(CommandIDs.matchBrackets, {
-      execute: () => {
-        config.matchBrackets = !config.matchBrackets;
-        return settingRegistry
-          .set(id, 'editorConfig', (config as unknown) as JSONObject)
-          .catch((reason: Error) => {
-            console.error(`Failed to set ${id}: ${reason.message}`);
-          });
-      },
-      label: 'Match Brackets',
-      isEnabled,
-      isToggled: () => config.matchBrackets
-    });
-  }
-
-  /**
-   * Add the Auto Close Brackets for Text Editor command
-   */
-  export function addAutoClosingBracketsCommand(
-    commands: CommandRegistry,
-    config: CodeEditor.IConfig,
-    settingRegistry: ISettingRegistry,
-    id: string
-  ) {
-    commands.addCommand(CommandIDs.autoClosingBrackets, {
-      execute: () => {
-        config.autoClosingBrackets = !config.autoClosingBrackets;
-        return settingRegistry
-          .set(id, 'editorConfig', (config as unknown) as JSONObject)
-          .catch((reason: Error) => {
-            console.error(`Failed to set ${id}: ${reason.message}`);
-          });
-      },
-      label: 'Auto Close Brackets for Text Editor',
-      isToggled: () => config.autoClosingBrackets
-    });
-  }
-
   /**
    * Add the Create Console for Editor command
    */
diff --git a/packages/fileeditor-extension/src/index.ts b/packages/fileeditor-extension/src/index.ts
index 31722dd5df8e..fb9d796f75a7 100644
--- a/packages/fileeditor-extension/src/index.ts
+++ b/packages/fileeditor-extension/src/index.ts
@@ -36,7 +36,7 @@ import { JSONObject } from '@phosphor/coreutils';
 
 import { Menu } from '@phosphor/widgets';
 
-import { Commands, EDITOR_ICON_CLASS, FACTORY } from './commands';
+import { CommandIDs, Commands, EDITOR_ICON_CLASS, FACTORY } from './commands';
 
 export { Commands } from './commands';
 
@@ -242,6 +242,110 @@ function activate(
     updateWidget(widget.content);
   });
 
+  // Add a command to change font size.
+  commands.addCommand(CommandIDs.changeFontSize, {
+    execute: args => {
+      const delta = Number(args['delta']);
+      if (Number.isNaN(delta)) {
+        console.error(
+          `${CommandIDs.changeFontSize}: delta arg must be a number`
+        );
+        return;
+      }
+      const style = window.getComputedStyle(document.documentElement);
+      const cssSize = parseInt(
+        style.getPropertyValue('--jp-code-font-size'),
+        10
+      );
+      const currentSize = config.fontSize || cssSize;
+      config.fontSize = currentSize + delta;
+      return settingRegistry
+        .set(id, 'editorConfig', (config as unknown) as JSONObject)
+        .catch((reason: Error) => {
+          console.error(`Failed to set ${id}: ${reason.message}`);
+        });
+    },
+    label: args => args['name'] as string
+  });
+
+  commands.addCommand(CommandIDs.lineNumbers, {
+    execute: () => {
+      config.lineNumbers = !config.lineNumbers;
+      return settingRegistry
+        .set(id, 'editorConfig', (config as unknown) as JSONObject)
+        .catch((reason: Error) => {
+          console.error(`Failed to set ${id}: ${reason.message}`);
+        });
+    },
+    isEnabled,
+    isToggled: () => config.lineNumbers,
+    label: 'Line Numbers'
+  });
+
+  type wrappingMode = 'on' | 'off' | 'wordWrapColumn' | 'bounded';
+
+  commands.addCommand(CommandIDs.lineWrap, {
+    execute: args => {
+      config.lineWrap = (args['mode'] as wrappingMode) || 'off';
+      return settingRegistry
+        .set(id, 'editorConfig', (config as unknown) as JSONObject)
+        .catch((reason: Error) => {
+          console.error(`Failed to set ${id}: ${reason.message}`);
+        });
+    },
+    isEnabled,
+    isToggled: args => {
+      const lineWrap = (args['mode'] as wrappingMode) || 'off';
+      return config.lineWrap === lineWrap;
+    },
+    label: 'Word Wrap'
+  });
+
+  commands.addCommand(CommandIDs.changeTabs, {
+    label: args => args['name'] as string,
+    execute: args => {
+      config.tabSize = (args['size'] as number) || 4;
+      config.insertSpaces = !!args['insertSpaces'];
+      return settingRegistry
+        .set(id, 'editorConfig', (config as unknown) as JSONObject)
+        .catch((reason: Error) => {
+          console.error(`Failed to set ${id}: ${reason.message}`);
+        });
+    },
+    isToggled: args => {
+      const insertSpaces = !!args['insertSpaces'];
+      const size = (args['size'] as number) || 4;
+      return config.insertSpaces === insertSpaces && config.tabSize === size;
+    }
+  });
+
+  commands.addCommand(CommandIDs.matchBrackets, {
+    execute: () => {
+      config.matchBrackets = !config.matchBrackets;
+      return settingRegistry
+        .set(id, 'editorConfig', (config as unknown) as JSONObject)
+        .catch((reason: Error) => {
+          console.error(`Failed to set ${id}: ${reason.message}`);
+        });
+    },
+    label: 'Match Brackets',
+    isEnabled,
+    isToggled: () => config.matchBrackets
+  });
+
+  commands.addCommand(CommandIDs.autoClosingBrackets, {
+    execute: () => {
+      config.autoClosingBrackets = !config.autoClosingBrackets;
+      return settingRegistry
+        .set(id, 'editorConfig', (config as unknown) as JSONObject)
+        .catch((reason: Error) => {
+          console.error(`Failed to set ${id}: ${reason.message}`);
+        });
+    },
+    label: 'Auto Close Brackets for Text Editor',
+    isToggled: () => config.autoClosingBrackets
+  });
+
   Commands.addCommands(
     commands,
     config,