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2026-05-25 17:07:28 +08:00
parent 30cba5ee96
commit df501f6151
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+import { warning } from "@rc-component/util/es/warning";
+let uuid = 0;
+
+/**
+ * Theme with algorithms to derive tokens from design tokens.
+ * Use `createTheme` first which will help to manage the theme instance cache.
+ */
+export default class Theme {
+  derivatives;
+  id;
+  constructor(derivatives) {
+    this.derivatives = Array.isArray(derivatives) ? derivatives : [derivatives];
+    this.id = uuid;
+    if (derivatives.length === 0) {
+      warning(derivatives.length > 0, '[Ant Design CSS-in-JS] Theme should have at least one derivative function.');
+    }
+    uuid += 1;
+  }
+  getDerivativeToken(token) {
+    return this.derivatives.reduce((result, derivative) => derivative(token, result), undefined);
+  }
+}