fix(glaze): allow absolute lightness with base colors for contrast (#14)

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: tenphi

.changeset/fix-lightness-base.md

@@ -0,0 +1,5 @@
+---
+'@tenphi/glaze': patch
+---
+
+Fix relative lightness application: allow absolute lightness values when using base colors for contrast solving. Previously, colors with both `base` and absolute `lightness` were incorrectly rejected during validation and topological sorting.

.cursor/commands/submit-changes.md

@@ -37,6 +37,7 @@ type(scope): short description
 - Keep the message as short as possible.
 - Include the changeset file in the same commit.
 - Before 1.0.0 release treat major changes as minor and minor as patches.
+- Do not include markdown files that are not in the repo yet and wasn't staged manually by the user.
 
 ## 4. Push
 

src/glaze.test.ts

@@ -151,6 +151,18 @@ describe('glaze', () => {
 
       expect(() => theme.resolve()).toThrow('must have either');
     });
+
+    it('resolves colors with absolute lightness and base (for contrast)', () => {
+      const theme = glaze(280, 80);
+      theme.colors({
+        surface: { lightness: 97 },
+        card: { base: 'surface', lightness: 46 },
+      });
+
+      const resolved = theme.resolve();
+      const card = resolved.get('card')!;
+      expect(card.light.l).toBeCloseTo(0.46, 2);
+    });
   });
 
   describe('relative lightness', () => {

src/glaze.ts

@@ -263,7 +263,7 @@ function validateColorDefs(defs: ColorMap): void {
       if (def.fg) dfs(def.fg);
     } else {
       const regDef = def as RegularColorDef;
-      if (regDef.base && !isAbsoluteLightness(regDef.lightness)) {
+      if (regDef.base) {
         dfs(regDef.base);
       }
     }
@@ -294,7 +294,7 @@ function topoSort(defs: ColorMap): string[] {
       if (def.fg) visit(def.fg);
     } else {
       const regDef = def as RegularColorDef;
-      if (regDef.base && !isAbsoluteLightness(regDef.lightness)) {
+      if (regDef.base) {
         visit(regDef.base);
       }
     }