Use of a component which needs 'core-js' #44

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on Jan 17, 2017

Hi,

I added the "angular2-tree-component" component via npm and got the error "TS2688: Cannot find type definition file for 'core-js'.

After installing "@types\core-js" I got "TS2300: Duplicate identifier 'PropertyKey'" (lib.es2015.core.d.ts).

Has anyone an idea how I can fix that problem?

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