Re-factor and convert the code in `src/display/pattern_helper.js` to use standard classes #13380

Merged

timvandermeij merged 2 commits intomozilla:masterfrom

Snuffleupagus:pattern_helper-class

May 16, 2021

Commits on May 15, 2021

Convert `src/display/pattern_helper.js` to use standard classes
Snuffleupagus
committed
Modernize the `ShadingIRs` structure, in `src/display/pattern_helper.js`, to use standard classes
Snuffleupagus
committed