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fix: consider undefined port when checking port #7318

Merged
merged 9 commits into from Mar 23, 2022
4 changes: 3 additions & 1 deletion packages/vite/src/node/server/ws.ts
Expand Up @@ -30,7 +30,9 @@ export function createWebSocketServer(
const hmr = isObject(config.server.hmr) && config.server.hmr
const wsServer =
(hmr && hmr.server) ||
((!(hmr && hmr.port) || hmr.port !== config.server.port) && server)
((!(hmr && hmr.port) ||
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(config.server.port && hmr.port !== config.server.port)) &&
server)

if (wsServer) {
wss = new WebSocket({ noServer: true })
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