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35 changes: 35 additions & 0 deletions packages/angular/build/src/builders/dev-server/vite-server.ts
Original file line number Diff line number Diff line change
Expand Up @@ -457,6 +457,41 @@ export async function* serveWithVite(
}
});

// Setup component HMR invalidation
// Invalidation occurs when the runtime cannot update a component
server.hot.on(
'angular:invalidate',
(data: { id: string; message?: string; error?: boolean }) => {
if (typeof data?.id !== 'string') {
context.logger.warn(
'Development server client sent invalid internal invalidate event.',
);
}

// Clear invalid template update
templateUpdates.delete(data.id);

// Some cases are expected unsupported update scenarios but some may be errors.
// If an error occurred, log the error in addition to the invalidation.
if (data.error) {
context.logger.error(
`Component update failed${data.message ? `: ${data.message}` : '.'}` +
'\nPlease consider reporting the error at https://github.com/angular/angular-cli/issues',
);
} else {
context.logger.warn(
`Component update unsupported${data.message ? `: ${data.message}` : '.'}`,
);
}

server?.ws.send({
type: 'full-reload',
path: '*',
});
context.logger.info('Page reload sent to client(s).');
},
);

const urls = server.resolvedUrls;
if (urls && (urls.local.length || urls.network.length)) {
serverUrl = new URL(urls.local[0] ?? urls.network[0]);
Expand Down