fix: error handle when sd cannot resolve reference (#139)

.changeset/chilled-lamps-glow.md

@@ -0,0 +1,5 @@
+---
+'@tokens-studio/sd-transforms': patch
+---
+
+Error handle if SD cannot resolve reference.

src/parsers/expand-composites.ts

@@ -109,9 +109,14 @@ function recurse(
               // the object value (typography/composition/border/shadow)
               // However, when it's the final resolved value, the props are as { value, type }
               // instead of just the value, so we use a map to grab only the value...
-              ref = Object.fromEntries(
-                Object.entries(boundGetRef(ref.value)[0]).map(([k, v]) => [k, v.value]),
-              ) as SingleToken<false>;
+              try {
+                ref = Object.fromEntries(
+                  Object.entries(boundGetRef(ref.value)[0]).map(([k, v]) => [k, v.value]),
+                ) as SingleToken<false>;
+              } catch (e) {
+                console.warn(`Warning: could not resolve reference ${ref.value}`);
+                return;
+              }
             }
             token.value = ref as SingleToken<false>['value'];
           }

test/spec/parsers/expand.spec.ts

@@ -295,4 +295,28 @@ describe('expand', () => {
       ),
     ).to.eql({ typography: tokensInput.typography });
   });
+
+  it(`should handle when a token reference in a composite cannot be resolved`, () => {
+    expect(
+      expandComposites(
+        {
+          ref: {
+            value: '{typography.foo}',
+            type: 'typography',
+          },
+        } as DeepKeyTokenMap<false>,
+        'foo/bar.json',
+        {
+          expand: {
+            typography: true,
+          },
+        },
+      ),
+    ).to.eql({
+      ref: {
+        value: '{typography.foo}',
+        type: 'typography',
+      },
+    });
+  });
 });