Original PR by @travnels, commit-message edited by @nknapp
* Upgraded eslint to 19.0.0
* Cleaned up duplicate rules 'no-extra-parens', 'quote-props'
* eslint rule 'no-empty-label' was replaced.
Rule 'no-empty-label' was removed and replaced by: ‘no-labels’. ‘no-labels’ already in the project
* eslint rule 'space-after-keywords' has been replaced
Rules 'space-after-keywords' and 'space-return-throw-case' wer removed and replaced by ‘keyword-spacing’.
* Added parsoer-option: sourceType='module'
* Add unnecessary=false to 'quote-props' to remove warnings about unnecessarily quoted property.
Code corrections
* helpers.js: unused variable 'depthString' removed, detected by new eslint
Nils Knappmeier
d117b3e0f9