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fix(nest): prevent concurrent NestJS application initialization #140

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fix(nest): prevent concurrent NestJS application initialization #140

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18 changes: 14 additions & 4 deletions packages/vite-plugin-node/src/server/nest.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,25 @@ import type { INestApplication } from '@nestjs/common';
import type { RequestAdapter } from '..';

let prevApp: INestApplication;
let initializing = false;

export const NestHandler: RequestAdapter<INestApplication> = async ({ app, req, res }) => {
// @ts-expect-error nest app typing error
if (!app.isInitialized) {
if (prevApp)
await prevApp.close();
while (initializing) {
await new Promise((resolve) => setTimeout(resolve, 100));
}
initializing = true;

await app.init();
prevApp = app;
try {
if (prevApp)
await prevApp.close();

await app.init();
prevApp = app;
} finally {
initializing = false;
}
}

const instance = app.getHttpAdapter().getInstance();
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