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angularangular-compiler-cliangular-compiler

What is the purpose of *.ngsummary.json

I've just learning about AOT, ngc etc. After running ngc I see plenty of *.ngsummary.json (in src folder, next to *.ts files).

What are they for?

Solution

  • This is apparently the new name of NgFactory files used by the AOT compiler. Search for NgFactory on this page Ahead-of-Time Compilation

    Extract :

    After ngc completes, look for a collection of NgFactory files in the aot folder. The aot folder is the directory specified as genDir in tsconfig-aot.json.

    These factory files are essential to the compiled application. Each component factory creates an instance of the component at runtime by combining the original class file and a JavaScript representation of the component's template. Note that the original component class is still referenced internally by the generated factory.