add option allowLiveBinding to avoid (caught) exceptions, on systems

that support live bindings

Author: rixo

lib/make-hot.js

@@ -40,6 +40,11 @@ const defaultHotOptions = {
 
   // disable runtime error overlay
   noOverlay: false,
+
+  // set to true on systems that supports them, to avoid useless caught /
+  // managed (but still...) exceptions, by using Svelte's current_component
+  // instead of get_current_component
+  allowLiveBinding: false,
 }
 
 const defaultHotApi = 'hot-api-esm.js'

runtime/proxy.js

@@ -237,6 +237,7 @@ class ProxyComponent {
     try {
       let lastProperties
       const _cmp = createProxiedComponent(current.Component, options, {
+        allowLiveBinding: current.hotOptions.allowLiveBinding,
         onDestroy,
         onMount: afterMount,
         onInstance: comp => {

runtime/svelte-hooks.js

@@ -84,7 +84,7 @@ const get_current_component_safe = () => {
 export const createProxiedComponent = (
   Component,
   initialOptions,
-  { onInstance, onMount, onDestroy }
+  { allowLiveBinding, onInstance, onMount, onDestroy }
 ) => {
   let cmp
   let options = initialOptions
@@ -255,7 +255,9 @@ export const createProxiedComponent = (
     }
   }
 
-  const parentComponent = get_current_component_safe()
+  const parentComponent = allowLiveBinding
+    ? current_component
+    : get_current_component_safe()
 
   cmp = new Component(options)
   cmp.$$.hmr_cmp = cmp