Hacking the CRA

Advantages

  • Easy to set up
  • Will work perfectly for small scale applications
  • Would normally be a good fit for most applications
  • Fairly easy to work with while keeping to conventions

Advantages

  • Comes already set up with many useful tools
    • Jest
    • Eslint
    • A full webpack config

Advantages

  • Is easily integrated with Redux
  • Is easily integrated with simple css frameworks
    • Styled Components
  • Comes with CSS Modules and SASS out of the box
  • Comes with a few postcss plugins of its own

What if that's not my cup of tea?

Disadvantages

  • Difficult to customize
  • Difficult to extend
  • Difficult to port to Monorepos
  • Difficult to integrate with other build systems

In Short

Any custom work will be normally impossible to deal with

Questions?

Options

Eject

Rewire

Taking control over CRA

Aka. Ejecting

Pros

  • Gives you full control over the entire build
  • Will produce an environment that would be easier to integrate with other tools, such as Storybook, with less hassle. 

Cons

  • Removes support from CRA
  • Exports a ton of configuration options, which are both hard to read and difficult to optimize and maintain
  • Updates and maintenance will need to be done manually

Hacking the CRA

Aka. Rewiring

How?

  • Acts as a middleware between react-scripts and the configuration itself that CRA generates.
  • It intercepts the config itself, and overwrites it, before passing it to the main CRA scripts.

Pros

  • Keeps CRA intact
  • Will keep receiving updates
  • Does not break or affect any of the CRA-s functionality
  • Can alter any aspect of the webpack build config
  • Requires less work to get set up and modify your build, compared to ejecting

Cons

  • Requires more tinkering than ejecting, and may require more hit-and-miss attempts at first
  • Will only work for CRA, integrating other tools such as Storybook would prove problematic

Questions?

Show me the code!

We're developers, after all...

Demo Time

  • Overrides:
    • External BabelRC
    • External ESLintRC
    • Integrating Linaria

Plot Twist

Code!

Questions?

Thank you for attending

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Hacking the CRA

By Sabin Marcu

Hacking the CRA

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