web - auto save on by default

src/vs/workbench/contrib/files/browser/files.contribution.ts

@@ -293,7 +293,7 @@ configurationRegistry.registerConfiguration({
 				nls.localize({ comment: ['This is the description for a setting. Values surrounded by single quotes are not to be translated.'], key: 'files.autoSave.onFocusChange' }, "A dirty file is automatically saved when the editor loses focus."),
 				nls.localize({ comment: ['This is the description for a setting. Values surrounded by single quotes are not to be translated.'], key: 'files.autoSave.onWindowChange' }, "A dirty file is automatically saved when the window loses focus.")
 			],
-			'default': AutoSaveConfiguration.OFF,
+			'default': platform.isWeb ? AutoSaveConfiguration.AFTER_DELAY : AutoSaveConfiguration.OFF,
 			'markdownDescription': nls.localize({ comment: ['This is the description for a setting. Values surrounded by single quotes are not to be translated.'], key: 'autoSave' }, "Controls auto save of dirty files. Read more about autosave [here](https://code.visualstudio.com/docs/editor/codebasics#_save-auto-save).", AutoSaveConfiguration.OFF, AutoSaveConfiguration.AFTER_DELAY, AutoSaveConfiguration.ON_FOCUS_CHANGE, AutoSaveConfiguration.ON_WINDOW_CHANGE, AutoSaveConfiguration.AFTER_DELAY)
 		},
 		'files.autoSaveDelay': {