Code draft v0.1.1

/**
 * Contrast between two colors, as WCAG defines it.
 * Every category of the syntax shows here: keywords, variables,
 * functions, classes, strings, numbers and comments.
 */
import { readFile } from 'node:fs/promises';

const HEX = /^#?([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i;
const MINIMUM = { text: 4.5, large: 3, ui: 3 };

export class Color {
  #channels;

  constructor(r, g, b, alpha = 1) {
    this.#channels = [r, g, b].map((c) => Math.min(1, Math.max(0, c)));
    this.alpha = alpha;
  }

  static fromHex(hex) {
    const match = HEX.exec(hex.trim());
    if (!match) throw new TypeError(`"${hex}" is not a six-digit hex color`);
    const channels = match.slice(1).map((pair) => parseInt(pair, 16) / 255);
    return new Color(...channels);
  }

  get luminance() {
    const linear = (c) => (c <= 0.04045 ? c / 12.92 : ((c + 0.055) / 1.055) ** 2.4);
    const [r, g, b] = this.#channels.map(linear);
    return 0.2126 * r + 0.7152 * g + 0.0722 * b;
  }
}

export function contrast(foreground, background) {
  const [light, dark] = [foreground, background]
    .map((color) => color.luminance)
    .sort((a, b) => b - a);
  return (light + 0.05) / (dark + 0.05);
}

export async function audit(file, { kind = 'text', signal } = {}) {
  const text = await readFile(file, { encoding: 'utf8', signal });
  const pairs = JSON.parse(text);
  const failing = [];
  for (const { fg, bg, name = 'unnamed' } of pairs) {
    const ratio = contrast(Color.fromHex(fg), Color.fromHex(bg));
    if (ratio < MINIMUM[kind]) {
      failing.push({ name, ratio: Number(ratio.toFixed(2)) });
    }
  }
  return failing.length === 0 ? null : failing;
}

/* A product page consuming the design system: its tokens, the component
   styles the team implemented from the specs, semantic tokens for every
   decision, literal lengths for its own layout only. */
@import url("@quantum-ds/tokens/css/index.css") layer(design-system);
@import url("./components.css") layer(design-system);

@layer product {
  :root { --product-columns: 3; }

  .product-grid {
    display: grid;
    grid-template-columns: repeat(var(--product-columns), minmax(0, 1fr));
    gap: clamp(1rem, 2.5vw, 2rem);
  }

  .product-card {
    position: relative;
    padding: 1.25rem 1.5rem;
    border: var(--stroke-width-sm) solid
      var(--global-border-level-edge-level-1);
    border-radius: var(--corner-radius-sm);
    background: var(--global-bg-level-1-default);
    color: var(--global-text-on-base-neutral-primary);
    transition: border-color var(--duration-fast, 120ms)
      var(--easing-standard);
  }

  .product-card:where(:hover, :focus-within) {
    border-color: var(--global-border-level-edge-state-hover);
  }

  .product-card > h2::after {
    content: " \2192";
    color: color-mix(
      in srgb, var(--global-text-on-base-neutral-tertiary) 80%, transparent
    );
  }

  #featured.product-card:not(:has(img)) { grid-column: span 2; }
}

@media (max-width: 48em) {
  :root { --product-columns: 1; }
  #featured.product-card { grid-column: auto !important; }
}

<!doctype html>
<html lang="en" data-theme="auto">
  <head>
    <meta charset="utf-8">
    <title>Dropdown &middot; without script</title>
    <link rel="stylesheet" href="node_modules/@quantum-ds/tokens/dist/css/index.css">
    <!-- The component styles, implemented from the specs. -->
    <link rel="stylesheet" href="css/components.css">
    <style>
      .stage { padding: 2rem; background: var(--global-bg-level-0-default); }
    </style>
  </head>
  <body>
    <main class="stage">
      <!-- The trigger opens the menu natively: no script ships with it. -->
      <div class="ds-dropdown">
        <button
          type="button"
          class="ds-button ds-dropdown__trigger"
          data-emphasis="subtle"
          id="actions-trigger"
          popovertarget="actions"
        >
          <span class="ds-button__label">Actions</span>
          <span class="ds-button__icon" aria-hidden="true">expand_more</span>
        </button>
        <div class="ds-dropdown__menu" id="actions" popover
             aria-labelledby="actions-trigger">
          <ul class="ds-dropdown__group">
            <li>
              <button type="button" class="ds-dropdown__item"
                      popovertarget="actions" popovertargetaction="hide">
                Duplicate
              </button>
            </li>
            <li>
              <button type="button" class="ds-dropdown__item"
                      data-intent="error" disabled>Delete project</button>
            </li>
          </ul>
        </div>
      </div>
    </main>
    <script type="module">
      // The page, not the component, remembers the mode the reader picked.
      const saved = localStorage.getItem('theme');
      const modes = ['light', 'dark', 'auto'];
      if (modes.includes(saved)) document.documentElement.dataset.theme = saved;
    </script>
  </body>
</html>

{
  "$description": "Code colors, light mode (the Figma library's Colors / Mapped).",
  "global": {
    "text": {
      "code": {
        "$type": "color",
        "keyword": { "$value": "{extended.lavender.700}" },
        "string": {
          "$value": {
            "colorSpace": "srgb",
            "components": [0.0943, 0.3804, 0.3059],
            "alpha": 1,
            "hex": "#18614e"
          },
          "$extensions": {
            "io.quantum": { "deprecated": false, "since": "0.1.0", "aliases": null }
          }
        }
      }
    }
  },
  "size": {
    "$type": "dimension",
    "control": { "md": { "$value": { "value": 40, "unit": "px" } } }
  }
}

#!/usr/bin/env bash
# Check the design system, then tag a release of the tokens.
set -euo pipefail

readonly VERSION="${1:?usage: release.sh <version>}"
readonly OUT_DIR="${OUT_DIR:-build}"
declare -i attempts=0

log() { printf '[%s] %s\n' "$(date +%H:%M:%S)" "$*" >&2; }

if [[ ! "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
  log "not a semantic version: $VERSION"
  exit 64
fi

until pnpm check > "$OUT_DIR/check.log" 2>&1; do
  attempts+=1
  (( attempts >= 3 )) && { log "pnpm check failed $attempts times"; exit 1; }
  sleep $(( attempts * 2 ))
done

for file in platforms/*/*.tokens.json; do
  case "$file" in
    *dark*) mode=dark ;;
    *) mode=light ;;
  esac
  cp "$file" "$OUT_DIR/$(basename "$(dirname "$file")")-$mode.json"
done

git tag --annotate "tokens-v$VERSION" --message "Tokens $VERSION" \
  && log "tagged tokens-v$VERSION"

# Continuous integration: check the artifacts on every merge request.
stages: [check, build]

variables:
  NODE_VERSION: "22"
  PNPM_HOME: /cache/pnpm
  CI_DEBUG: false

.pnpm: &pnpm
  image: node:${NODE_VERSION}-slim
  before_script:
    - corepack enable
    - pnpm install --frozen-lockfile
  cache:
    key: { files: [pnpm-lock.yaml] }
    paths: [.pnpm-store/]

check:
  <<: *pnpm
  stage: check
  script:
    - pnpm check
    - pnpm impact --base "origin/$CI_MERGE_REQUEST_TARGET_BRANCH_NAME"
  rules:
    - if: $CI_PIPELINE_SOURCE == "merge_request_event"

site:
  <<: *pnpm
  stage: build
  needs: [check]
  script: pnpm build
  artifacts:
    expire_in: 1 week
    paths:
      - apps/docs/dist/
  retry: 2
  timeout: 15m

// Marked lines: highlighted, added, removed, an error and a warning.
import { createHighlighter } from 'shiki';
import theme from './web/shiki-theme.json' with { type: 'json' };

const highlighter = await createHighlighter({
  themes: ['github-light', 'github-dark'], 
  themes: [theme], 
  langs: ['css', 'html', 'javascript'],
});

export function render(source, lang) {
  return highlighter.codeToHtml(source, { lang, theme: theme.name }); 
}

render('a { color: red }', 'scss'); 
render('<p>Hello</p>'); 

*** tokens/semantic/colors-mapped.tokens.json	2026-10-02 10:12:04
--- tokens/semantic/colors-mapped.tokens.json	2026-10-02 15:47:31
***************
*** 566,572 ****
          "keyword": {"$type":"color","$value":"{extended.lavender.700}"},
          "variable": {"$type":"color","$value":"{extended.orchid.700}"},
          "function": {"$type":"color","$value":"{extended.azure.700}"},
!         "class-and-type": {"$type":"color","$value":"{extended.amber.500}"},
!         "string": {"$type":"color","$value":"{extended.forest.600}"},
          "comment": {"$type":"color","$value":"{light-switch.base.700}"}
        },
--- 566,573 ----
          "keyword": {"$type":"color","$value":"{extended.lavender.700}"},
          "variable": {"$type":"color","$value":"{extended.orchid.700}"},
          "function": {"$type":"color","$value":"{extended.azure.700}"},
!         "class-and-type": {"$type":"color","$value":"{extended.amber.700}"},
!         "string": {"$type":"color","$value":"{extended.forest.700}"},
+         "number": {"$type":"color","$value":"{extended.coral.700}"},
          "comment": {"$type":"color","$value":"{light-switch.base.700}"}
        },
***************
*** 601,604 ****
-       "skeleton": {"$type":"color","$value":"{light-switch.base.300}"},
        "disabled": {"$type":"color","$value":"{light-switch.base.500}"}
--- 602,604 ----

# Code colors

> Syntax highlighting is an aid: the code reads the same **without** it.

Load the theme, then highlight with _any_ grammar:

- the theme lives in `web/shiki-theme.json`
- its colors are CSS variables, see [the Shiki docs](https://shiki.style/guide/load-theme)
- line states come from `web/foundations/code.css`

```js
import theme from './web/shiki-theme.json' with { type: 'json' };
const html = highlighter.codeToHtml(source, { lang: 'css', theme: theme.name });
```

{
  "global": {
    "text": {
      "code": {
        "keyword": { "$value": "{extended.lavender.700}" }
        "variable": { "$value": "{extended.orchid.700}" },
        comment: { "$value": "{light-switch.base.700}" }
      }
    }
  }
}