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fix: add WebSocket polyfill for Electron main process #2101

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fix: add WebSocket polyfill for Electron main process #2101

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18 changes: 10 additions & 8 deletions frontend/util/wsutil.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,15 +3,14 @@

import type { WebSocket as NodeWebSocketType } from "ws";

let NodeWebSocket: typeof NodeWebSocketType = null;
let NodeWebSocket: any = null;

if (typeof window === "undefined") {
// Necessary to avoid issues with Rollup: https://github.com/websockets/ws/issues/2057
import("ws")
.then((ws) => (NodeWebSocket = ws.default))
.catch((e) => {
console.log("Error importing 'ws':", e);
});
if (typeof window === "undefined" || (typeof process !== "undefined" && process.type === "browser")) {
try {
NodeWebSocket = require("ws").WebSocket;
} catch (e) {
import("ws").then((ws) => (NodeWebSocket = ws.default)).catch((e) => console.log("ws import error:", e));
}
}

type ComboWebSocket = NodeWebSocketType | WebSocket;
Expand All @@ -20,6 +19,9 @@ function newWebSocket(url: string, headers: { [key: string]: string }): ComboWeb
if (NodeWebSocket) {
return new NodeWebSocket(url, { headers });
} else {
if (typeof WebSocket === "undefined") {
throw new Error("WebSocket not available in this environment");
}
return new WebSocket(url);
}
}
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