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node_modules/http-proxy-middleware/dist/handlers/fix-request-body.d.ts

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+/// <reference types="node" />
+import type * as http from 'http';
+/**
+ * Fix proxied body if bodyParser is involved.
+ */
+export declare function fixRequestBody(proxyReq: http.ClientRequest, req: http.IncomingMessage): void;

node_modules/http-proxy-middleware/dist/handlers/fix-request-body.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.fixRequestBody = void 0;
+const querystring = require("querystring");
+/**
+ * Fix proxied body if bodyParser is involved.
+ */
+function fixRequestBody(proxyReq, req) {
+    const requestBody = req.body;
+    if (!requestBody) {
+        return;
+    }
+    const contentType = proxyReq.getHeader('Content-Type');
+    const writeBody = (bodyData) => {
+        // deepcode ignore ContentLengthInCode: bodyParser fix
+        proxyReq.setHeader('Content-Length', Buffer.byteLength(bodyData));
+        proxyReq.write(bodyData);
+    };
+    if (contentType && contentType.includes('application/json')) {
+        writeBody(JSON.stringify(requestBody));
+    }
+    if (contentType && contentType.includes('application/x-www-form-urlencoded')) {
+        writeBody(querystring.stringify(requestBody));
+    }
+}
+exports.fixRequestBody = fixRequestBody;

node_modules/http-proxy-middleware/dist/handlers/index.d.ts

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+export * from './public';

node_modules/http-proxy-middleware/dist/handlers/index.js

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+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __exportStar = (this && this.__exportStar) || function(m, exports) {
+    for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+__exportStar(require("./public"), exports);

node_modules/http-proxy-middleware/dist/handlers/public.d.ts

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+export { responseInterceptor } from './response-interceptor';
+export { fixRequestBody } from './fix-request-body';

node_modules/http-proxy-middleware/dist/handlers/public.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.fixRequestBody = exports.responseInterceptor = void 0;
+var response_interceptor_1 = require("./response-interceptor");
+Object.defineProperty(exports, "responseInterceptor", { enumerable: true, get: function () { return response_interceptor_1.responseInterceptor; } });
+var fix_request_body_1 = require("./fix-request-body");
+Object.defineProperty(exports, "fixRequestBody", { enumerable: true, get: function () { return fix_request_body_1.fixRequestBody; } });

node_modules/http-proxy-middleware/dist/handlers/response-interceptor.d.ts

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+/// <reference types="node" />
+import type * as http from 'http';
+declare type Interceptor = (buffer: Buffer, proxyRes: http.IncomingMessage, req: http.IncomingMessage, res: http.ServerResponse) => Promise<Buffer | string>;
+/**
+ * Intercept responses from upstream.
+ * Automatically decompress (deflate, gzip, brotli).
+ * Give developer the opportunity to modify intercepted Buffer and http.ServerResponse
+ *
+ * NOTE: must set options.selfHandleResponse=true (prevent automatic call of res.end())
+ */
+export declare function responseInterceptor(interceptor: Interceptor): (proxyRes: http.IncomingMessage, req: http.IncomingMessage, res: http.ServerResponse) => Promise<void>;
+export {};

node_modules/http-proxy-middleware/dist/handlers/response-interceptor.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.responseInterceptor = void 0;
+const zlib = require("zlib");
+/**
+ * Intercept responses from upstream.
+ * Automatically decompress (deflate, gzip, brotli).
+ * Give developer the opportunity to modify intercepted Buffer and http.ServerResponse
+ *
+ * NOTE: must set options.selfHandleResponse=true (prevent automatic call of res.end())
+ */
+function responseInterceptor(interceptor) {
+    return async function proxyRes(proxyRes, req, res) {
+        const originalProxyRes = proxyRes;
+        let buffer = Buffer.from('', 'utf8');
+        // decompress proxy response
+        const _proxyRes = decompress(proxyRes, proxyRes.headers['content-encoding']);
+        // concat data stream
+        _proxyRes.on('data', (chunk) => (buffer = Buffer.concat([buffer, chunk])));
+        _proxyRes.on('end', async () => {
+            // copy original headers
+            copyHeaders(proxyRes, res);
+            // call interceptor with intercepted response (buffer)
+            const interceptedBuffer = Buffer.from(await interceptor(buffer, originalProxyRes, req, res));
+            // set correct content-length (with double byte character support)
+            res.setHeader('content-length', Buffer.byteLength(interceptedBuffer, 'utf8'));
+            res.write(interceptedBuffer);
+            res.end();
+        });
+        _proxyRes.on('error', (error) => {
+            res.end(`Error fetching proxied request: ${error.message}`);
+        });
+    };
+}
+exports.responseInterceptor = responseInterceptor;
+/**
+ * Streaming decompression of proxy response
+ * source: https://github.com/apache/superset/blob/9773aba522e957ed9423045ca153219638a85d2f/superset-frontend/webpack.proxy-config.js#L116
+ */
+function decompress(proxyRes, contentEncoding) {
+    let _proxyRes = proxyRes;
+    let decompress;
+    switch (contentEncoding) {
+        case 'gzip':
+            decompress = zlib.createGunzip();
+            break;
+        case 'br':
+            decompress = zlib.createBrotliDecompress();
+            break;
+        case 'deflate':
+            decompress = zlib.createInflate();
+            break;
+        default:
+            break;
+    }
+    if (decompress) {
+        _proxyRes.pipe(decompress);
+        _proxyRes = decompress;
+    }
+    return _proxyRes;
+}
+/**
+ * Copy original headers
+ * https://github.com/apache/superset/blob/9773aba522e957ed9423045ca153219638a85d2f/superset-frontend/webpack.proxy-config.js#L78
+ */
+function copyHeaders(originalResponse, response) {
+    response.statusCode = originalResponse.statusCode;
+    response.statusMessage = originalResponse.statusMessage;
+    if (response.setHeader) {
+        let keys = Object.keys(originalResponse.headers);
+        // ignore chunked, brotli, gzip, deflate headers
+        keys = keys.filter((key) => !['content-encoding', 'transfer-encoding'].includes(key));
+        keys.forEach((key) => {
+            let value = originalResponse.headers[key];
+            if (key === 'set-cookie') {
+                // remove cookie domain
+                value = Array.isArray(value) ? value : [value];
+                value = value.map((x) => x.replace(/Domain=[^;]+?/i, ''));
+            }
+            response.setHeader(key, value);
+        });
+    }
+    else {
+        response.headers = originalResponse.headers;
+    }
+}