full site update

node_modules/fontkit/src/decorators.js

@@ -0,0 +1,36 @@
+/**
+ * This decorator caches the results of a getter or method such that
+ * the results are lazily computed once, and then cached.
+ * @private
+ */
+export function cache(target, key, descriptor) {
+  if (descriptor.get) {
+    let get = descriptor.get;
+    descriptor.get = function() {
+      let value = get.call(this);
+      Object.defineProperty(this, key, { value });
+      return value;
+    };
+  } else if (typeof descriptor.value === 'function') {
+    let fn = descriptor.value;
+
+    return {
+      get() {
+        let cache = new Map;
+        function memoized(...args) {
+          let key = args.length > 0 ? args[0] : 'value';
+          if (cache.has(key)) {
+            return cache.get(key);
+          }
+
+          let result = fn.apply(this, args);
+          cache.set(key, result);
+          return result;
+        };
+
+        Object.defineProperty(this, key, {value: memoized});
+        return memoized;
+      }
+    };
+  }
+}