Charles Lyding e2e8d57b38 feat(@angular-devkit/build-angular): support targeting ES2017 with Zone.js
This change causes native async functions to be downleveled when an application targets ES2017 within its TypeScript configuration.  Any source file that contains the async keyword will be processed including libraries.  Since Zone.js does not support native async, this processing allows Zone.js to function with an ES2017 target.
2021-01-26 09:26:23 -06:00
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