Both Babel and ESlint are behind and should be upgraded.

• For ESLint there are also the rules to react functional components that can be added.
• We are currently using Babel 6.26, upgrade to the most recent 7.4.
• We are currently using ESlint 4.5, upgrade to 5.1

Babel Helpful docs:

• https://babeljs.io/
• https://babeljs.io/docs/en/v7-migration\

ESLint Helpful docs:

• https://eslint.org/
• to add react functional component rules
  • https://reactjs.org/docs/hooks-rules.html#eslint-plugin
  • npm package: eslint-plugin-react-hooks

Driving reasons:

• We like to keep Babel up-to-date for support purposes.
• Github posted by security vulnerability alert at https://github.com/Caltech-IPAC/firefly/network/alerts.
• Babel 7 also adds better JSX support for react fragments.

A similar ticket in IPAC Firefly team has been scheduled for July sprint.  https://jira.ipac.caltech.edu/browse/FIREFLY-74 
 
https://jira.ipac.caltech.edu/browse/FIREFLY-74