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robustify error handling #5108

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May 30, 2022
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5 changes: 5 additions & 0 deletions .changeset/dry-cars-dance.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
'@sveltejs/kit': patch
---

Reload page to recover from HMR errors
3 changes: 3 additions & 0 deletions packages/kit/src/core/dev/plugin.js
Original file line number Diff line number Diff line change
Expand Up @@ -512,6 +512,9 @@ export const svelte = function (svelte_config) {
...svelte_config.compilerOptions,
hydratable: !!svelte_config.kit.browser.hydrate
},
hot: {
optimistic: false
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configFile: false
});
};
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6 changes: 6 additions & 0 deletions packages/kit/src/runtime/client/client.js
Original file line number Diff line number Diff line change
Expand Up @@ -986,6 +986,12 @@ export function create_client({ target, session, base, trailing_slash }) {
return new Promise(() => {});
}

if (import.meta.hot) {
import.meta.hot.on('vite:beforeUpdate', () => {
if (current.error) location.reload();
});
}

return {
after_navigate: (fn) => {
onMount(() => {
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