Kent continues to configure Babel and demonstrates a few additional features. He ignores any test scripts so they are not included in the distribution directory. He also uses the --copy-files flag to copy any non-JavaScript files like the JSON data file into the distribution directory. Finally, he adds the rimraf Node module to remove the “dist” folder each time the build script is run to ensure it’s clean and up-to-date. The code for this example is on the FEM/07.0-transpile-source branch.
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