fix(ssr): Fix the ability to use the logger with SSR frameworks

Summary:
A change was introduced that attempted to call `window` during
the browser logger bootstrap, this is fine execpt SSR frameworks
dont have a concept of window during their initial rendering.  This
will now delay caching of the original console instance until after
the logger is enabled.

Semver: patch

src/capture.ts

@@ -4,7 +4,7 @@ import { process } from './buffer-manager';
 import utils from './utils';
 import { getStaticContext, getContext, getDynamicContext } from './context-manager';
 import { getSessionId } from './session-manager';
-import { LogMessage, LogDNALogLine } from './logdna';
+import { LogMessage } from './logdna';
 
 const captureMessage = ({ level = 'log', message, lineContext = {} }: LogMessage) => {
   if (isSendingDisabled()) return;

src/init.ts

@@ -40,6 +40,7 @@ const init = (ingestionKey: string, opts: LogDNABrowserOptions = DEFAULT_CONFIG)
     return;
   }
 
+  utils.cacheConsole();
   sampleRate = utils.generateSampleRateScore();
   initPlugins(options);
   addFlushEvents();

src/utils.ts

@@ -93,8 +93,24 @@ const isBrowserStorageAvailable = (storage: 'localStorage' | 'sessionStorage') =
 
 const isFunction = (fn?: Function) => typeof fn === 'function';
 
-const { log, debug, error, warn, info } = window.console;
-const originalConsole: any = { log, debug, error, warn, info };
+const consoleMethods = ['log', 'error', 'debug', 'warn', 'info'];
+let cachedConsole: any = consoleMethods.reduce((a: any, m: string) => ({ ...a, [m]: () => {} }), {});
+const originalConsole: any = consoleMethods.reduce(
+  (a: any, m: string) => ({
+    ...a,
+    [m]: (...args: any) => {
+      cachedConsole[m](...args);
+    },
+  }),
+  {},
+);
+
+// This will delay the caching of the original instance of the console
+// until after logdna is enabled and initialized for use with SSR.
+const cacheConsole = () => {
+  const { log, error, debug, warn, info } = window.console;
+  cachedConsole = { log, error, debug, warn, info };
+};
 
 export default {
   validateHostname,
@@ -108,4 +124,5 @@ export default {
   isBrowserStorageAvailable,
   isFunction,
   originalConsole,
+  cacheConsole,
 };