January 2020 (version 1.33.0)

1.33.0 Update

Happy New Year!

We hope you have a great 2020 and will work hard to ensure DeepScan is your handy JavaScript tool.

Please kindly go ahead with the highlights for the latest release.

Release Summary

This version includes a number of updates that we hope you've found some of them helpful.
The key highlights are:

New Rules

We are enhancing our rules. Check out the newly introduced rules!

Improved Rules

DeepScan for GitHub Students

Now we are together with the GitHub Student Developer Pack.

Providing a free trial for qualified GitHub Students, we hope to help students who want to develop and learn JavaScript enjoyably.

Good luck to the future JavaScript developers!

ESLint Integration

We have added more ESLint plugins which are missing in the analysis.

For details about ESLint analysis, see the Using ESLint.


  • In the ESLint analysis, the files larger than 3MB are ignored automatically
  • Recognize type annotations of outer function parameters
  • Recognize React PropTypes.node and PropTypes.element more precisely
  • Remove support for deprecated Firefox-specific APIs: Object.prototype.watch and Object.prototype.unwatch

Bug Fixes

  • A false alarm may occur when a computed property is used at object literal
  • A false alarm may occur when a property value is updated after object literal creation
  • Leading and trailing whitespaces at JSX text node may not be properly removed
  • Object literals assigned at let declaration may not be properly recognized