chore: adds transparent-tokens.js

[marissahuysentruyt]

Description

This PR builds upon the idea the the rgb-mapping plugin introduced to the repo.

• finds any alias tokens that refer to other tokens with the word "transparent" in them
  • i.e. --spectrum-disabled-content-color: var(--spectrum-transparent-white-200)
• creates new custom properties that correspond to the -rgb and -opacity values of the transparent token
  • new properties would include --spectrum-disabled-content-color-rgb and --spectrum-disabled-content-color-opacity
• replaces the original transparent token value with an rgba function that references the newly created custom properties instead
  • i.e. --spectrum-disabled-content-color: rgba(var(--spectrum-disabled-content-color-rgb), var(--spectrum-disabled-content-color-opacity)

Jira/Specs

CSS-451

How and where has this been tested?

Please tag yourself on the tests you've marked complete to confirm the tests have been run by someone other than the author.

Validation steps

node ./plugins/postcss-rgb-mapping/transparent-tokens.js

Regression testing

Validate:

1. The documentation pages for at least two other components are still loading, including:

• The pages render correctly, are accessible, and are responsive.

2. If components have been modified, VRTs have been run on this branch:

• VRTs have been run and looked at.
• Any VRT changes have been accepted (by reviewer and/or PR author), or there are no changes.

Screenshots

To-do list

• I have read the contribution guidelines.
• I have updated relevant storybook stories and templates.
• I have tested these changes in Windows High Contrast mode.
• If my change impacts other components, I have tested to make sure they don't break.
• If my change impacts documentation, I have updated the documentation accordingly.
• ✨ This pull request is ready to merge. ✨

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Latest commit: 5d1daf9

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[github-actions]

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File metrics

Summary

Total size: 3.25 MB^*
Total change (Δ): 🔴 ⬆ 2.97 KB (0.09%)

Table reports on changes to a package's main file. Other changes can be found in the collapsed Details section below.

Package	Size	Δ
tokens	204.93 KB	🔴 ⬆ 2.97 KB

Details

tokens

Filename	Head	Compared to base
css/dark-vars.css	48.04 KB	-
css/global-vars.css	44.20 KB	-
css/index.css	204.93 KB	🔴 ⬆ 2.97 KB (1.47%)
css/large-vars.css	32.08 KB	-
css/light-vars.css	48.00 KB	-
css/medium-vars.css	32.24 KB	-
json/tokens.json	289.94 KB	-

* Size determined by adding together the size of the main file for all packages in the library.
* Results are not gzipped or minified.
* An ASCII character in UTF-8 is 8 bits or 1 byte.