How to get angular2 to work in eclipse with typescript

Question

So I was starting researching about angular2 and since I saw so many references to typescript being prefered I am trying to switch to it from javascript. Problem is, I saw a

Answer 1

Eclipse Oxygen

Default javascript installation, then added the default free plugin for angular 2 / typescript from here:

angular2.ide - http://oss.opensagres.fr/angular2-eclipse/1.3.0/

After installing I opened an existing Angular 4 / TS project, worked fine. I then installed support for .scss from http://www.liclipse.com/text/updates. All setup and configured with Typescript 2.4.1 / nodejs v6.9.4.

But within days it now fails to open .ts files at all. Re-installation of the ng plugin did not fix it, I uninstalled liclipse plugin and no change either. It basically leaves eclipse unusable for ng4 projects as is.

The logs show the following errors.

org.eclipse.core.runtime.CoreException: Plug-in "ts.eclipse.ide.jsdt.ui" was unable to instantiate class "ts.eclipse.ide.jsdt.internal.ui.editor.TypeScriptEditor".
    at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.throwException(RegistryStrategyOSGI.java:194)
    at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:188)
    at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
...
Caused by: java.lang.NoClassDefFoundError: org/eclipse/wst/jsdt/ui/text/JavaScriptSourceViewerConfiguration
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
...
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.wst.jsdt.ui (441).
    at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:112)
    at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:529)
 ...
 Caused by: java.lang.ClassFormatError: Name index 1 in LocalVariableTable has bad constant type in class file org/eclipse/wst/jsdt/internal/core/JavaModelManager