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Using Angular, RXJS, and SystemJS

just updated DotComIt's build scripts for building Angular 6 applications. I wrote these before the AngularCLI was king of the heap and keep these around because I haven't had time to update my LearnWith series, which contains an introduction to Angular.

Anyway, I copied my Angular5 scripts, updated the package.json to a bunch of new versions, build the sample app, and then started getting errors from the application:

Error: Unexpected token <

My local dev server has directory browsing turned on, so instead of loading the actual files behind rxjs it was trying to load the directory listing. That won't work. I also saw this error in my experimentation, which said that '"rxjs/operators" not found'. Supposedly that issue was fixed long before RXJS 6.0.0, but alas I was still seeing it.

The solution was to list all the rxjs directories as a package inside of SystemJS Config:

packages: {
'rxjs/ajax': {main: 'index.js', defaultExtension: 'js' },
'rxjs/operators': {main: 'index.js', defaultExtension: 'js' },
'rxjs/testing': {main: 'index.js', defaultExtension: 'js' },
'rxjs/websocket': {main: 'index.js', defaultExtension: 'js' },
rxjs: { main: 'index.js', defaultExtension: 'js' }

It took me a while to find this solution, and even then I couldn't get it to work until I removed the quotes around the last package definition.

Weird stuff,

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