diff --git a/packages/types/package.json b/packages/types/package.json
index 8e0916537..7726e2ba2 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -35,16 +35,19 @@
   "dependencies": {},
   "devDependencies": {
     "@types/jest": "^24.0.11",
-    "@types/node": "^11.11.3",
     "@types/lodash": "^4.14.123",
+    "@types/node": "^11.11.3",
     "@types/parsimmon": "^1.10.0",
+    "@types/underscore": "^1.8.13",
     "dts-generator": "^3.0.0",
+    "dtslint": "^0.5.5",
     "flowgen": "^1.7.0",
+    "lodash": "^4.17.11",
     "replace-in-file": "^3.4.4",
     "ts-loader": "^5.3.3",
     "ts-node": "^8.0.3",
     "ts-to-flow": "^0.0.3",
     "typescript": "3.3.3333",
-    "dtslint": "^0.5.5"
+    "underscore": "^1.9.1"
   }
 }
diff --git a/packages/types/src/main/IUtilEach.ts b/packages/types/src/main/IUtilEach.ts
new file mode 100644
index 000000000..f45973a81
--- /dev/null
+++ b/packages/types/src/main/IUtilEach.ts
@@ -0,0 +1,8 @@
+export type TUtilEachCollection = any[] | object
+
+export type TUtilEachHandler = (value: any, key?: string | number, collection?: TUtilEachCollection) => void
+
+export type TUtilEach = (
+  collection: TUtilEachCollection,
+  handler: TUtilEachHandler
+) => TUtilEachCollection
diff --git a/packages/types/src/main/IUtilMap.ts b/packages/types/src/main/IUtilMap.ts
new file mode 100644
index 000000000..6e4fcac55
--- /dev/null
+++ b/packages/types/src/main/IUtilMap.ts
@@ -0,0 +1,8 @@
+export type TUtilMapCollection = any[] | object
+
+export type TUtilMapHandler = (value: any, key?: string | number, collection?: TUtilMapCollection) => any
+
+export type TUtilMap = (
+  collection: TUtilMapCollection,
+  handler: TUtilMapHandler
+) => any[]
diff --git a/packages/types/src/main/IUtilSet.ts b/packages/types/src/main/IUtilSet.ts
new file mode 100644
index 000000000..9de7989d2
--- /dev/null
+++ b/packages/types/src/main/IUtilSet.ts
@@ -0,0 +1,11 @@
+export type TUtilSetPath = Array<string | number> | string
+
+export type TUtilSetObject = object
+
+export type TUtilSetValue = any
+
+export type TUtilSet = (
+  obj: TUtilSetObject,
+  path: TUtilSetPath,
+  value: TUtilSetValue
+) => void
diff --git a/packages/types/src/main/index.ts b/packages/types/src/main/index.ts
index 8c8d52671..453329b48 100644
--- a/packages/types/src/main/index.ts
+++ b/packages/types/src/main/index.ts
@@ -3,4 +3,7 @@ export { IAnyMap } from './IAnyMap'
 export { IEventEmitter } from './IEventEmitter'
 export { ILogger, TLogLevel, ILoggerMethod } from './ILogger'
 export { TUtilGet } from './IUtilGet'
+export { TUtilSet } from './IUtilSet'
+export { TUtilEach } from './IUtilEach'
+export { TUtilMap } from './IUtilMap'
 export { ICloneable } from './ICloneable'
diff --git a/packages/types/src/test/index.ts b/packages/types/src/test/index.ts
index 871f8fc6e..26167043e 100644
--- a/packages/types/src/test/index.ts
+++ b/packages/types/src/test/index.ts
@@ -1,3 +1,6 @@
+import { forEach as lodashEach, map as lodashMap, set as lodashSet, get as lodashGet } from 'lodash';
+import { each as underscoreEach, map as underscoreMap } from 'underscore';
+
 import {
   IStringMap,
   IAnyMap,
@@ -6,6 +9,9 @@ import {
   ILogger,
   TLogLevel,
   TUtilGet,
+  TUtilSet,
+  TUtilEach,
+  TUtilMap,
   ICloneable
 } from '../main';
 
@@ -76,8 +82,35 @@ const logger: ILogger = {
 
 // TUtilGet
 
-const brokenUtilGet: TUtilGet = (obj: object, path: any[], defaultValue?: any) => undefined; // $ExpectError
-const utilGet: TUtilGet = (obj: object, path: Array<string | number> | string, defaultValue?: any) => obj || path || defaultValue;
+const brokenUtilGet: TUtilGet = (obj: object, path: any[], defaultValue?: any) => { obj || path || defaultValue; }; // $ExpectError
+const utilGet: TUtilGet = (obj: object, path: Array<string | number> | string, defaultValue?: any) => {
+  obj || path;
+  return defaultValue;
+};
+const lodashUtilGet: TUtilGet = lodashGet;
+
+// TUtilSet
+
+const brokenUtilSet: TUtilSet = (obj: object, path: any[], value: boolean) => { obj || path || value; }; // $ExpectError
+const utilSet: TUtilSet = (obj: object, path: Array<string | number> | string, value: boolean) => { obj || path || value; };
+const lodashUtilSet: TUtilSet = lodashSet;
+
+// TUtilEach
+
+const brokenUtilEach: TUtilEach = (collection: object, handler: (value: string, key: boolean, collection: object) => void) =>  { handler || collection; }; // $ExpectError
+const utilEach: TUtilEach = (collection: object, handler: (value: string, key: number, collection: object) => void): object => {
+  handler(JSON.stringify(collection), 1, collection);
+  return collection;
+};
+const lodashUtilEach: TUtilEach = lodashEach;
+const underscoreUtilEach: TUtilEach = underscoreEach;
+
+// TUtilMap
+
+const brokenUtilMap: TUtilMap = (collection: object, handler: (value: string, key: boolean, collection: object) => object): any[] => [handler(JSON.stringify(collection), false, collection)]; // $ExpectError
+const utilMap: TUtilMap = (collection: object, handler: (value: string, key: string, collection: object) => object): any[] => [handler(JSON.stringify(collection), 'key', collection)];
+const lodashUtilMap: TUtilMap = lodashMap;
+const underscoreUtilMap: TUtilMap = underscoreMap;
 
 // ICloneable
 const cloneable: ICloneable<string> = {
diff --git a/yarn.lock b/yarn.lock
index 29391a6e2..5b633e196 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1178,6 +1178,11 @@
   resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-1.0.1.tgz#0a851d3bd96498fa25c33ab7278ed3bd65f06c3e"
   integrity sha512-l42BggppR6zLmpfU6fq9HEa2oGPEI8yrSPL3GITjfRInppYFahObbIQOQK3UGxEnyQpltZLaPe75046NOZQikw==
 
+"@types/underscore@^1.8.13":
+  version "1.8.13"
+  resolved "https://registry.yarnpkg.com/@types/underscore/-/underscore-1.8.13.tgz#e1bf89141fbccb71dcb3bf12d86a923c007698e3"
+  integrity sha512-2YEdDHTYAv3YmSoQofzFnlWYDAAtMtVcQ0lOHoURuCt1aT9OgxhhjRRU1WVAiLchNWM7B3a8/iomxenfr9TwKA==
+
 "@types/yargs@^12.0.2", "@types/yargs@^12.0.9":
   version "12.0.9"
   resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-12.0.9.tgz#693e76a52f61a2f1e7fb48c0eef167b95ea4ffd0"
@@ -7118,6 +7123,11 @@ umask@^1.1.0, umask@~1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/umask/-/umask-1.1.0.tgz#f29cebf01df517912bb58ff9c4e50fde8e33320d"
 
+underscore@^1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.9.1.tgz#06dce34a0e68a7babc29b365b8e74b8925203961"
+  integrity sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg==
+
 union-value@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.0.tgz#5c71c34cb5bad5dcebe3ea0cd08207ba5aa1aea4"