feat(List)

src/utils/concept.js

@@ -0,0 +1,34 @@
+export function satisfiesConcept(obj, pure_virtual, virtual, debug) {
+  if (typeof obj !== 'object' || obj === null) {
+    return false;
+  }
+  if (debug) {
+    const missingMethods = []
+
+    pure_virtual.forEach((method) => {
+      if (typeof obj[method] !== 'function') {
+        missingMethods.push(method)
+      }
+    })
+
+    virtual.forEach((method) => {
+      if (!(method in obj)) {
+        missingMethods.push(method)
+      }
+    })
+
+    if (missingMethods.length !== 0) {
+      console.debug(obj.constructor.name, missingMethods)
+      return false
+    }
+  } else {
+    if (!pure_virtual.every((method) => typeof obj[method] === 'function')) {
+      return false;
+    }
+
+    if (!virtual.every((method) => method in obj)) {
+      return false;
+    }
+  }
+  return true
+}

src/utils/mixin.js

@@ -0,0 +1,7 @@
+export function mixinClasses(dest, ...sources) {
+  for (const source of sources) {
+    const properties = Object.getOwnPropertyDescriptors(source.prototype)
+    delete properties.constructor
+    Object.defineProperties(dest.prototype, properties)
+  }
+}