Various fixes

js/entity/CalculatedType.js

@@ -0,0 +1,22 @@
+/**
+ * @typedef {import("./IEntity").default} IEntity
+ */
+
+export default class CalculatedType {
+
+    #f
+
+    /**
+     * @param {Function} f
+     */
+    constructor(f) {
+        this.#f = f
+    }
+
+    /**
+     * @param {IEntity} entity
+     */
+    calculate(entity) {
+        return this.f(entity)
+    }
+}