* Add sourcemap examples for identifiers in code generator.
* Generate sourcemaps with exact mappings for identifiers, even if leading/trailing tokens also use that location.
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| Patch: Bug Fix? |
| Major: Breaking Change? |
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| Fixed Tickets | #5616
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Currently the `opts.filename` value exposed to plugins is just whatever the user passed. While it _could_ be relative to the working directory, if Babel was passed an absolute URL, it'll be absolute.
This PR explicitly ensures the filename is a relative path based on the working directory. This also exposes an officially endorsed API for reading the working directory path.
* feat(babel-cli): add a brief summary to build output
* address feedback
* further adjustments
* Use quiet output as default, add --verbose
* fix tests
* remove verbose alias
