Use Asynchronous Code for Loading Modules (#1471)

* Add async loading code

* Made infinite loop checking async

* Update stepper to be async

* Add assert and misc utils

* Update transpiler to be async

* Update runners

* Add new import options

* Ignore tests during typechecking

* Relocate typeguards

* Update with assertions and typeguards

* Update repl transpiler to be async

* Abstract out module context initialization and tab loading

* Renamed promise timeout error and added tests

* Remove old code

* Update options

* Add files to avoid line ending issues

* Use POSIX paths on Windows systems

* Ran format

* Update eslint rules to follow exclusion of tests

* Incorporate changes for posix path handling

* Minor change to resolve certain webpack issues with the frontend

* Use a different posix path import

* Allow loading of export default tabs

* Refactor collation of import declarations

---------

Co-authored-by: Ian Yong <[email protected]>

Author: leeyi45

.editorconfig

@@ -0,0 +1,2 @@
+[*]
+end_of_line = lf

.eslintrc.json

@@ -9,6 +9,7 @@
     "plugin:@typescript-eslint/recommended-requiring-type-checking",
     "prettier"
   ],
+  "ignorePatterns": ["src/**/__tests__/**", "src/**/__mocks__/**"],
   "parser": "@typescript-eslint/parser",
   "parserOptions": {
     "project": "tsconfig.json",
@@ -45,5 +46,12 @@
     "@typescript-eslint/unbound-method": "off",
     "prefer-rest-params": "off",
     "simple-import-sort/imports": "warn"
-  }
+  },
+  "overrides": [{
+    "files": ["src/**/__tests__/**", "src/**/__mocks__/**"],
+    "plugins": ["simple-import-sort"],
+    "rules": {
+      "simple-import-sort/imports": "warn"
+    }
+  }]
 }