These packages are obsoleted by the promises API to the built-in Node fs
module. The fs-extra package is also causing problems with broken APIs
that don't behave the same as Node's fs module, and throwing errors
without code properties on them.
Use a separate folder for the TypeScript build for Node.js in the dist
folder. This makes each type of build consistently have its own output
folder instead of being interleaved with the Node.js build.
Output message_validate.js to both dist/src/data and src/data. This
allows tools to directly consume the TypeScript sources in src/data
without throwing an error due to message_validate being missing.
Hornwitser