fix(core): run plugin init script in a separate context (#9571)

Author: lucasfernog

Diff for: .changes/plugin-init-script-context.md

@@ -0,0 +1,5 @@
+---
+"tauri": patch:enhance
+---
+
+Run each plugin initialization script on its own context so they do not interfere with each other or the Tauri init script.

Diff for: core/tauri/scripts/init.js

@@ -14,6 +14,4 @@
   __RAW_event_initialization_script__
 
   __RAW_bundle_script__
-
-  __RAW_plugin_initialization_script__
 })()

Diff for: core/tauri/src/manager/webview.rs

@@ -133,7 +133,7 @@ impl<R: Runtime> WebviewManager<R> {
     let app_manager = manager.manager();
 
     let is_init_global = app_manager.config.app.with_global_tauri;
-    let plugin_init = app_manager
+    let plugin_init_scripts = app_manager
       .plugins
       .lock()
       .expect("poisoned plugin store")
@@ -199,10 +199,13 @@ impl<R: Runtime> WebviewManager<R> {
         app_manager,
         &ipc_init.into_string(),
         &pattern_init.into_string(),
-        &plugin_init,
         is_init_global,
       )?);
 
+    for plugin_init_script in plugin_init_scripts {
+      webview_attributes = webview_attributes.initialization_script(&plugin_init_script);
+    }
+
     #[cfg(feature = "isolation")]
     if let crate::Pattern::Isolation { schema, .. } = &*app_manager.pattern {
       webview_attributes = webview_attributes.initialization_script(
@@ -345,7 +348,6 @@ impl<R: Runtime> WebviewManager<R> {
     app_manager: &AppManager<R>,
     ipc_script: &str,
     pattern_script: &str,
-    plugin_initialization_script: &str,
     with_global_tauri: bool,
   ) -> crate::Result<String> {
     #[derive(Template)]
@@ -362,8 +364,6 @@ impl<R: Runtime> WebviewManager<R> {
       #[raw]
       event_initialization_script: &'a str,
       #[raw]
-      plugin_initialization_script: &'a str,
-      #[raw]
       freeze_prototype: &'a str,
     }
 
@@ -398,7 +398,6 @@ impl<R: Runtime> WebviewManager<R> {
         app_manager.listeners().function_name(),
         app_manager.listeners().listeners_object_name(),
       ),
-      plugin_initialization_script,
       freeze_prototype,
     }
     .render_default(&Default::default())

Diff for: core/tauri/src/plugin.rs

@@ -783,14 +783,13 @@ impl<R: Runtime> PluginStore<R> {
   }
 
   /// Generates an initialization script from all plugins in the store.
-  pub(crate) fn initialization_script(&self) -> String {
+  pub(crate) fn initialization_script(&self) -> Vec<String> {
     self
       .store
       .iter()
       .filter_map(|p| p.initialization_script())
-      .fold(String::new(), |acc, script| {
-        format!("{acc}\n(function () {{ {script} }})();")
-      })
+      .map(|script| format!("(function () {{ {script} }})();"))
+      .collect()
   }
 
   /// Runs the created hook for all plugins in the store.