Use babel-plugin-transform-react-remove-prop-types for build:node task

[oigewan]

Feature:
Fixes #462

This will wrap all assignments to the propTypes property of a React component class in a process.env.NODE_ENV !== "production", which will allow npm module consumers to remove prop types for their production build. This will allow for smaller deployables for consumers.

Known Issue:
This will require users to inject the value for process.env.NODE_ENV. Consumers can do this via webpack's Environment Plugin or rollup's Replace Plugin.

Changes:
Add transform-react-remove-prop-types to the .babelrc file with the mode set to "wrap". Output will end up looking like this:

exports.default = Caption;
Caption.propTypes = process.env.NODE_ENV !== "production" ? {
  date: _propTypes2.default.instanceOf(Date),
  months: _propTypes2.default.arrayOf(_propTypes2.default.string),
  locale: _propTypes2.default.string,
  localeUtils: _propTypes2.default.object,
  onClick: _propTypes2.default.func,
  classNames: _propTypes2.default.shape({
    caption: _propTypes2.default.string.isRequired
  }).isRequired
} : {};

cc: @gpbl

[codecov]

Codecov Report

Merging #463 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #463   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          15     15           
  Lines         527    527           
  Branches      109    109           
=====================================
  Hits          527    527

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[gpbl]

thanks!