Babel can not extract words from superset-ui packages

[grace-shi]

A clear and concise description of what the bug is.

Expected results

when extracting new strings for translation, words inside superset-ui packages should be extracted as well.

Actual results

Babel only extracts words from superset-frontend/src and backend code. ignored superset-ui plugins inside node_modules

Screenshots

How to reproduce the bug

1. Go to project root directory
2. Run flask fab babel-extract --target superset/translations --output superset/translations/messages.pot --config superset/translations/babel.cfg -k _ -k __ -k t -k tn -k tct
3. See logs

Environment

• superset version: 0.37
• python version: 3.7.0
• node.js version: v12.18.2
• npm version: 6.14.5

Checklist

Make sure these boxes are checked before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

Many chart plugins use t function to translate strings, but these strings can not extracted for translation.

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[zhaoyongjie]

Hi, @grace-shi. there are a workaround to fetch translation from any directory that specify a custome babel.cfg file. The babel.cfg contains superset-ui-plugs directory.

[junlincc]

closing ... issued has been resolved by #10902.