[SDK-1516] Web Workers (#409)

* fetch in a web worker

* token worker

* known issue: doesn't work if user already logged in (need authorization_code grant_type to populate the refresh token)

* add iframe fallback

* fix tests

* We want to load:
`rollup-plugin-worker-loader::module:./token.worker.ts`
But not:
rollup-plugin-worker-loader::module:/Users/adammcgrath/dev/auth0-spa-js/src/token.worker.ts
TODO: check windows

* Fixed ES5 transpilation for rollup worker plugin

* Make messages serializable using `JSON.parse(JSON.stringify({}))`
Swap imports per https://github.com/mo/abortcontroller-polyfill/blob/3f1c13d2e4087ee15ded81786f1110ae547931bb/README.md#using-it-on-internet-explorer-11-msie11

* only use worker for non ie, local refresh token opts

TODO: fix tests

* Fix tests

* Removed refresh token from worker memory when not included in response

* Moved offline_access scope configuration to constructor

* Modified playground to use both factory func and constructor

* Remove Object.assign

* Remove checks to fix rebuild issue

* Abort timed out requests in the Web Worker

* Errors

* Fix tests

* Add some more tests

* DRY up the tests a little

* Moar tests

* unused import

* update rollup-plugin-web-worker-loader
don't run `addEventListener` in tests
add test for missing refresh token and localstorage

* add timeout tests

* add browser tests

* Only include files in the typings copy process

* Fix fallback logic when no RT and no worker

* add browser tests and comments

* bump node version in Jenkinsfile

* Removed unused import

* Added sanity check for web worker support

* Fixed tests for window.Worker check

* Moved constructor tests into Auth0Client

Co-authored-by: Steve Hobbs <[email protected]>

.gitignore

@@ -5,4 +5,5 @@ coverage
 stats.html
 cypress/screenshots
 cypress/videos
-.release
+.release
+.idea

.vscode/launch.json

@@ -23,6 +23,14 @@
       "console": "integratedTerminal",
       "internalConsoleOptions": "neverOpen",
       "disableOptimisticBPs": true
+    },
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Build",
+      "program": "${workspaceFolder}/node_modules/.bin/rollup",
+      "args": ["-m", "-c"],
+      "console": "integratedTerminal"
     }
   ]
 }

Jenkinsfile

@@ -2,15 +2,15 @@ pipeline {
   agent {
     label 'crew-brucke'
   }
-   
+
   tools {
-    nodejs '10.15.1'
+    nodejs '12.9.1'
   }
- 
+
   options {
     timeout(time: 10, unit: 'MINUTES')
   }
- 
+
   stages {
     stage('SharedLibs') {
       steps {
@@ -52,10 +52,10 @@ pipeline {
       }
     }
   }
-   
+
   post {
     cleanup {
       deleteDir()
     }
   }
-}
+}