Add node modules and compiled JavaScript from main (#54)

Co-authored-by: Oliver King <oking3@uncc.edu>

node_modules/@szmarczak/http-timer/dist/source/index.js

@@ -0,0 +1,126 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const defer_to_connect_1 = require("defer-to-connect");
+const util_1 = require("util");
+const nodejsMajorVersion = Number(process.versions.node.split('.')[0]);
+const timer = (request) => {
+    if (request.timings) {
+        return request.timings;
+    }
+    const timings = {
+        start: Date.now(),
+        socket: undefined,
+        lookup: undefined,
+        connect: undefined,
+        secureConnect: undefined,
+        upload: undefined,
+        response: undefined,
+        end: undefined,
+        error: undefined,
+        abort: undefined,
+        phases: {
+            wait: undefined,
+            dns: undefined,
+            tcp: undefined,
+            tls: undefined,
+            request: undefined,
+            firstByte: undefined,
+            download: undefined,
+            total: undefined
+        }
+    };
+    request.timings = timings;
+    const handleError = (origin) => {
+        const emit = origin.emit.bind(origin);
+        origin.emit = (event, ...args) => {
+            // Catches the `error` event
+            if (event === 'error') {
+                timings.error = Date.now();
+                timings.phases.total = timings.error - timings.start;
+                origin.emit = emit;
+            }
+            // Saves the original behavior
+            return emit(event, ...args);
+        };
+    };
+    handleError(request);
+    const onAbort = () => {
+        timings.abort = Date.now();
+        // Let the `end` response event be responsible for setting the total phase,
+        // unless the Node.js major version is >= 13.
+        if (!timings.response || nodejsMajorVersion >= 13) {
+            timings.phases.total = Date.now() - timings.start;
+        }
+    };
+    request.prependOnceListener('abort', onAbort);
+    const onSocket = (socket) => {
+        timings.socket = Date.now();
+        timings.phases.wait = timings.socket - timings.start;
+        if (util_1.types.isProxy(socket)) {
+            return;
+        }
+        const lookupListener = () => {
+            timings.lookup = Date.now();
+            timings.phases.dns = timings.lookup - timings.socket;
+        };
+        socket.prependOnceListener('lookup', lookupListener);
+        defer_to_connect_1.default(socket, {
+            connect: () => {
+                timings.connect = Date.now();
+                if (timings.lookup === undefined) {
+                    socket.removeListener('lookup', lookupListener);
+                    timings.lookup = timings.connect;
+                    timings.phases.dns = timings.lookup - timings.socket;
+                }
+                timings.phases.tcp = timings.connect - timings.lookup;
+                // This callback is called before flushing any data,
+                // so we don't need to set `timings.phases.request` here.
+            },
+            secureConnect: () => {
+                timings.secureConnect = Date.now();
+                timings.phases.tls = timings.secureConnect - timings.connect;
+            }
+        });
+    };
+    if (request.socket) {
+        onSocket(request.socket);
+    }
+    else {
+        request.prependOnceListener('socket', onSocket);
+    }
+    const onUpload = () => {
+        var _a;
+        timings.upload = Date.now();
+        timings.phases.request = timings.upload - ((_a = timings.secureConnect) !== null && _a !== void 0 ? _a : timings.connect);
+    };
+    const writableFinished = () => {
+        if (typeof request.writableFinished === 'boolean') {
+            return request.writableFinished;
+        }
+        // Node.js doesn't have `request.writableFinished` property
+        return request.finished && request.outputSize === 0 && (!request.socket || request.socket.writableLength === 0);
+    };
+    if (writableFinished()) {
+        onUpload();
+    }
+    else {
+        request.prependOnceListener('finish', onUpload);
+    }
+    request.prependOnceListener('response', (response) => {
+        timings.response = Date.now();
+        timings.phases.firstByte = timings.response - timings.upload;
+        response.timings = timings;
+        handleError(response);
+        response.prependOnceListener('end', () => {
+            timings.end = Date.now();
+            timings.phases.download = timings.end - timings.response;
+            timings.phases.total = timings.end - timings.start;
+        });
+        response.prependOnceListener('aborted', onAbort);
+    });
+    return timings;
+};
+exports.default = timer;
+// For CommonJS default export support
+module.exports = timer;
+module.exports.default = timer;