@expo/cli
Version:
80 lines (79 loc) • 3.16 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "createMetroMiddleware", {
enumerable: true,
get: function() {
return createMetroMiddleware;
}
});
function _connect() {
const data = /*#__PURE__*/ _interop_require_default(require("connect"));
_connect = function() {
return data;
};
return data;
}
const _createEventSocket = require("./createEventSocket");
const _createMessageSocket = require("./createMessageSocket");
const _log = require("../../../../log");
const _editor = require("../../../../utils/editor");
function _interop_require_default(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
const compression = require('compression');
function createMetroMiddleware(metroConfig) {
const messages = (0, _createMessageSocket.createMessagesSocket)({
logger: _log.Log
});
const events = (0, _createEventSocket.createEventsSocket)(messages);
const middleware = (0, _connect().default)().use(noCacheMiddleware).use(compression())// Support opening stack frames from clients directly in the editor
.use('/open-stack-frame', rawBodyMiddleware).use('/open-stack-frame', metroOpenStackFrameMiddleware)// Support the symbolication endpoint of Metro
// See: https://github.com/facebook/metro/blob/a792d85ffde3c21c3fbf64ac9404ab0afe5ff957/packages/metro/src/Server.js#L1266
.use('/symbolicate', rawBodyMiddleware)// Support status check to detect if the packager needs to be started from the native side
.use('/status', createMetroStatusMiddleware(metroConfig));
return {
middleware,
messagesSocket: messages,
eventsSocket: events,
websocketEndpoints: {
[messages.endpoint]: messages.server,
[events.endpoint]: events.server
}
};
}
const noCacheMiddleware = (req, res, next)=>{
res.setHeader('Surrogate-Control', 'no-store');
res.setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, proxy-revalidate');
res.setHeader('Pragma', 'no-cache');
res.setHeader('Expires', '0');
next();
};
const rawBodyMiddleware = (req, _res, next)=>{
const reqWithBody = req;
reqWithBody.setEncoding('utf8');
reqWithBody.rawBody = '';
reqWithBody.on('data', (chunk)=>reqWithBody.rawBody += chunk);
reqWithBody.on('end', next);
};
const metroOpenStackFrameMiddleware = (req, res, next)=>{
// Only accept POST requests
if (req.method !== 'POST') return next();
// Only handle requests with a raw body
if (!('rawBody' in req) || !req.rawBody) {
res.statusCode = 406;
return res.end('Open stack frame requires the JSON stack frame as request body');
}
const frame = JSON.parse(req.rawBody);
(0, _editor.openInEditorAsync)(frame.file, frame.lineNumber).finally(()=>res.end('OK'));
};
function createMetroStatusMiddleware(metroConfig) {
return (_req, res)=>{
res.setHeader('X-React-Native-Project-Root', metroConfig.projectRoot);
res.end('packager-status:running');
};
}
//# sourceMappingURL=createMetroMiddleware.js.map