"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = wrapper;
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var _path = _interopRequireDefault(require("path"));
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var _mimeTypes = _interopRequireDefault(require("mime-types"));
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var _getFilenameFromUrl = _interopRequireDefault(require("./utils/getFilenameFromUrl"));
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var _handleRangeHeaders = _interopRequireDefault(require("./utils/handleRangeHeaders"));
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var _ready = _interopRequireDefault(require("./utils/ready"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function wrapper(context) {
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return async function middleware(req, res, next) {
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const acceptedMethods = context.options.methods || ["GET", "HEAD"]; // fixes #282. credit @cexoso. in certain edge situations res.locals is undefined.
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// eslint-disable-next-line no-param-reassign
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res.locals = res.locals || {};
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if (!acceptedMethods.includes(req.method)) {
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await goNext();
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return;
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}
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(0, _ready.default)(context, processRequest, req);
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async function goNext() {
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if (!context.options.serverSideRender) {
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return next();
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}
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return new Promise(resolve => {
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(0, _ready.default)(context, () => {
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// eslint-disable-next-line no-param-reassign
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res.locals.webpack = {
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devMiddleware: context
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};
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resolve(next());
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}, req);
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});
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}
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async function processRequest() {
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const filename = (0, _getFilenameFromUrl.default)(context, req.url);
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let {
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headers
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} = context.options;
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if (typeof headers === "function") {
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headers = headers(req, res, context);
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}
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let content;
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if (!filename) {
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await goNext();
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return;
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}
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try {
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content = context.outputFileSystem.readFileSync(filename);
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} catch (_ignoreError) {
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await goNext();
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return;
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}
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const contentTypeHeader = res.get ? res.get("Content-Type") : res.getHeader("Content-Type");
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if (!contentTypeHeader) {
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// content-type name(like application/javascript; charset=utf-8) or false
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const contentType = _mimeTypes.default.contentType(_path.default.extname(filename)); // Only set content-type header if media type is known
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// https://tools.ietf.org/html/rfc7231#section-3.1.1.5
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if (contentType) {
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// Express API
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if (res.set) {
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res.set("Content-Type", contentType);
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} // Node.js API
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else {
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res.setHeader("Content-Type", contentType);
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}
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}
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}
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if (headers) {
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const names = Object.keys(headers);
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for (const name of names) {
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// Express API
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if (res.set) {
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res.set(name, headers[name]);
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} // Node.js API
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else {
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res.setHeader(name, headers[name]);
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}
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}
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} // Buffer
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content = (0, _handleRangeHeaders.default)(context, content, req, res); // Express API
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if (res.send) {
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res.send(content);
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} // Node.js API
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else {
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res.setHeader("Content-Length", content.length);
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if (req.method === "HEAD") {
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res.end();
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} else {
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res.end(content);
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}
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}
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}
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};
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}
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