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[Feature] Added proxyReqOverride option #31

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[Feature] Added proxyReqOverride option #31

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6 changes: 5 additions & 1 deletion src/index.ts
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Original file line number Diff line number Diff line change
@@ -1,7 +1,10 @@
import { NextApiResponse, NextApiRequest } from "next";
import httpProxy, { ServerOptions } from "http-proxy";

export interface NextHttpProxyMiddlewareOptions extends ServerOptions {
pathRewrite?: { [key: string]: string };
/** @type {(proxyReq: any, req: any) => boolean} Override proxyReq event handler. If return true, bypass the original event handler. */
proxyReqOverride?: (proxyReq: any, req: any) => boolean;
}

/**
Expand Down Expand Up @@ -42,7 +45,7 @@ const httpProxyMiddleware = async (
httpProxyOptions: NextHttpProxyMiddlewareOptions = {}
): Promise<any> =>
new Promise((resolve, reject) => {
const { pathRewrite } = httpProxyOptions;
const { pathRewrite, proxyReqOverride } = httpProxyOptions;
if (pathRewrite) {
req.url = rewritePath(req.url as string, pathRewrite);
}
Expand All @@ -57,6 +60,7 @@ const httpProxyMiddleware = async (
}
proxy
.once("proxyReq", ((proxyReq: any, req: any): void => {
if (proxyReqOverride && proxyReqOverride(proxyReq, req)) return;
if (hasRequestBodyMethods.indexOf(req.method as string) >= 0 && typeof req.body === "string") {
proxyReq.write(req.body);
proxyReq.end();
Expand Down