diff --git a/package.json b/package.json
index 7e55391..a1c58f6 100644
--- a/package.json
+++ b/package.json
@@ -5,12 +5,24 @@
   "main": "build/main/index.js",
   "typings": "build/main/index.d.ts",
   "module": "build/module/index.js",
+  "sideEffects": false,
   "repository": {
     "type": "git",
     "url": "https://github.com/BowlingX/geschichte.git"
   },
+  "bugs": {
+    "url": "https://github.com/BowlingX/geschichte/issues"
+  },
+  "homepage": "https://github.com/BowlingX/geschichte#readme",
   "license": "MIT",
-  "keywords": [],
+  "keywords": [
+    "react",
+    "react-hooks",
+    "hooks",
+    "history",
+    "url",
+    "query-parameters"
+  ],
   "scripts": {
     "describe": "npm-scripts-info",
     "build": "run-s clean && run-p build:*",
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index 99e9472..c46eabb 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -110,7 +110,7 @@ export const applyDiffWithCreateQueriesFromPatch = (
  */
 export const applyFlatConfigToState = (
   config: MappedConfig,
-  queryValues: object,
+  queryValues: {readonly [index: string]:any},
   ns: string,
   state: object,
   initialState: object
@@ -142,8 +142,9 @@ export const applyFlatConfigToState = (
  * that can be used to generate a query string.
  * @return a key/value object with the object containing the defined parameters as key.
  */
-export const flattenConfig = (config: Config, path: readonly string[] = []) => {
-  return Object.keys(config).reduce((next, key) => {
+export const flattenConfig =
+  (config: Config, path: readonly string[] = []): MappedConfig => {
+  return Object.keys(config).reduce((next: {readonly [index: string]:any}, key) => {
     const v = config[key]
     const nextPath: ReadonlyArray<string> = [...path, key]
     if (typeof v === 'function') {