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node_modules/webpack-dev-middleware/dist/utils/compatibleAPI.js

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+"use strict";
+
+/** @typedef {import("../index.js").IncomingMessage} IncomingMessage */
+
+/** @typedef {import("../index.js").ServerResponse} ServerResponse */
+
+/**
+ * @typedef {Object} ExpectedRequest
+ * @property {(name: string) => string | undefined} get
+ */
+
+/**
+ * @typedef {Object} ExpectedResponse
+ * @property {(name: string) => string | string[] | undefined} get
+ * @property {(name: string, value: number | string | string[]) => void} set
+ * @property {(status: number) => void} status
+ * @property {(data: any) => void} send
+ */
+
+/**
+ * @template {ServerResponse} Response
+ * @param {Response} res
+ * @returns {string[]}
+ */
+function getHeaderNames(res) {
+  if (typeof res.getHeaderNames !== "function") {
+    // @ts-ignore
+    // eslint-disable-next-line no-underscore-dangle
+    return Object.keys(res._headers || {});
+  }
+
+  return res.getHeaderNames();
+}
+/**
+ * @template {IncomingMessage} Request
+ * @param {Request} req
+ * @param {string} name
+ * @returns {string | undefined}
+ */
+
+
+function getHeaderFromRequest(req, name) {
+  // Express API
+  if (typeof
+  /** @type {Request & ExpectedRequest} */
+  req.get === "function") {
+    return (
+      /** @type {Request & ExpectedRequest} */
+      req.get(name)
+    );
+  } // Node.js API
+  // @ts-ignore
+
+
+  return req.headers[name];
+}
+/**
+ * @template {ServerResponse} Response
+ * @param {Response} res
+ * @param {string} name
+ * @returns {number | string | string[] | undefined}
+ */
+
+
+function getHeaderFromResponse(res, name) {
+  // Express API
+  if (typeof
+  /** @type {Response & ExpectedResponse} */
+  res.get === "function") {
+    return (
+      /** @type {Response & ExpectedResponse} */
+      res.get(name)
+    );
+  } // Node.js API
+
+
+  return res.getHeader(name);
+}
+/**
+ * @template {ServerResponse} Response
+ * @param {Response} res
+ * @param {string} name
+ * @param {number | string | string[]} value
+ * @returns {void}
+ */
+
+
+function setHeaderForResponse(res, name, value) {
+  // Express API
+  if (typeof
+  /** @type {Response & ExpectedResponse} */
+  res.set === "function") {
+    /** @type {Response & ExpectedResponse} */
+    res.set(name, typeof value === "number" ? String(value) : value);
+    return;
+  } // Node.js API
+
+
+  res.setHeader(name, value);
+}
+/**
+ * @template {ServerResponse} Response
+ * @param {Response} res
+ * @param {number} code
+ */
+
+
+function setStatusCode(res, code) {
+  if (typeof
+  /** @type {Response & ExpectedResponse} */
+  res.status === "function") {
+    /** @type {Response & ExpectedResponse} */
+    res.status(code);
+    return;
+  } // eslint-disable-next-line no-param-reassign
+
+
+  res.statusCode = code;
+}
+/**
+ * @template {IncomingMessage} Request
+ * @template {ServerResponse} Response
+ * @param {Request} req
+ * @param {Response} res
+ * @param {string | Buffer | import("fs").ReadStream} bufferOtStream
+ * @param {number} byteLength
+ */
+
+
+function send(req, res, bufferOtStream, byteLength) {
+  if (typeof
+  /** @type {import("fs").ReadStream} */
+  bufferOtStream.pipe === "function") {
+    setHeaderForResponse(res, "Content-Length", byteLength);
+
+    if (req.method === "HEAD") {
+      res.end();
+      return;
+    }
+    /** @type {import("fs").ReadStream} */
+
+
+    bufferOtStream.pipe(res);
+    return;
+  }
+
+  if (typeof
+  /** @type {Response & ExpectedResponse} */
+  res.send === "function") {
+    /** @type {Response & ExpectedResponse} */
+    res.send(bufferOtStream);
+    return;
+  } // Only Node.js API used
+
+
+  res.setHeader("Content-Length", byteLength);
+
+  if (req.method === "HEAD") {
+    res.end();
+  } else {
+    res.end(bufferOtStream);
+  }
+}
+
+module.exports = {
+  getHeaderNames,
+  getHeaderFromRequest,
+  getHeaderFromResponse,
+  setHeaderForResponse,
+  setStatusCode,
+  send
+};