it's helpful to write working code

scripts/dtsgenerator.js

@@ -1,3 +1,22 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
 const findup = require('findup');
 const resolve = require('resolve');
 const fs = require('fs');
@@ -154,15 +173,15 @@ generator.then(() => {
 function buildEuiTokensObject() {
   // reduce over the tokens list as a few of the tokens are used multiple times and must be
   // filtered down to a list
-  const i18ndefs = require('../i18ntokens.json').reduce(
-    ({ definitions, tokens }, def) => {
-      if (tokens.has(def.token)) {
+  const { i18ndefs } = require('../i18ntokens.json').reduce(
+    ({ i18ndefs, tokens }, def) => {
+      if (!tokens.has(def.token)) {
         tokens.add(def.token);
-        definitions.push(def);
+        i18ndefs.push(def);
       }
-      return definitions;
+      return { i18ndefs, tokens };
     },
-    { definitions: [], tokens: new Set() }
+    { i18ndefs: [], tokens: new Set() }
   );
   return `
 declare module '@elastic/eui' {