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19 lines
610 B
TypeScript
19 lines
610 B
TypeScript
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import net from "node:net";
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export function checkPort(port: number): Promise<{ available: boolean; error?: string }> {
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return new Promise((resolve) => {
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const server = net.createServer();
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server.once("error", (err: NodeJS.ErrnoException) => {
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if (err.code === "EADDRINUSE") {
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resolve({ available: false, error: `Port ${port} is already in use` });
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} else {
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resolve({ available: false, error: err.message });
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}
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});
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server.once("listening", () => {
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server.close(() => resolve({ available: true }));
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});
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server.listen(port, "127.0.0.1");
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});
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}
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