diff --git a/src/legacy/ui/public/state_management/state.js b/src/legacy/ui/public/state_management/state.js
index 27186b424997860..e868abb98c852ea 100644
--- a/src/legacy/ui/public/state_management/state.js
+++ b/src/legacy/ui/public/state_management/state.js
@@ -316,6 +316,27 @@ export function StateProvider(Private, $rootScope, $location, stateManagementCon
     return this._urlParam;
   };
 
+  /**
+   * Returns an object with each property name and value corresponding to the entries in this collection
+   * excluding fields started from '$', '_' and all methods
+   *
+   * @return {object}
+   */
+  State.prototype.toObject = function () {
+    return _.omit(this, (value, key) => {
+      return key.charAt(0) === '$' || key.charAt(0) === '_' || _.isFunction(value);
+    });
+  };
+
+  /** Alias for method 'toObject'
+   *
+   * @obsolete Please use 'toObject' method instead
+   * @return {object}
+   */
+  State.prototype.toJSON = function () {
+    return this.toObject();
+  };
+
   return State;
 
 }
diff --git a/src/legacy/ui/public/utils/__tests__/base_object.js b/src/legacy/ui/public/utils/__tests__/base_object.js
deleted file mode 100644
index dfc5688c7b2f4fa..000000000000000
--- a/src/legacy/ui/public/utils/__tests__/base_object.js
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * 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.
- */
-
-import expect from '@kbn/expect';
-import ngMock from 'ng_mock';
-import '../../private';
-
-import { BaseObject } from '../base_object';
-
-describe('Base Object', function () {
-  beforeEach(ngMock.module('kibana'));
-
-  it('should take an inital set of values', function () {
-    const baseObject = new BaseObject({ message: 'test' });
-    expect(baseObject).to.have.property('message', 'test');
-  });
-
-  it('should serialize attributes to RISON', function () {
-    const baseObject = new BaseObject();
-    baseObject.message = 'Testing... 1234';
-    const rison = baseObject.toRISON();
-    expect(rison).to.equal('(message:\'Testing... 1234\')');
-  });
-
-  it('should not serialize $$attributes to RISON', function () {
-    const baseObject = new BaseObject();
-    baseObject.$$attributes = { foo: 'bar' };
-    baseObject.message = 'Testing... 1234';
-    const rison = baseObject.toRISON();
-    expect(rison).to.equal('(message:\'Testing... 1234\')');
-  });
-
-  it('should serialize attributes for JSON', function () {
-    const baseObject = new BaseObject();
-    baseObject.message = 'Testing... 1234';
-    baseObject._private = 'foo';
-    baseObject.$private = 'stuff';
-    const json = JSON.stringify(baseObject);
-    expect(json).to.equal('{"message":"Testing... 1234"}');
-  });
-});
diff --git a/src/legacy/ui/public/utils/__tests__/simple_emitter.js b/src/legacy/ui/public/utils/__tests__/simple_emitter.js
deleted file mode 100644
index 25224a409f8f4b9..000000000000000
--- a/src/legacy/ui/public/utils/__tests__/simple_emitter.js
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- * 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.
- */
-
-import { SimpleEmitter } from '../simple_emitter';
-import expect from '@kbn/expect';
-import sinon from 'sinon';
-
-describe('SimpleEmitter class', function () {
-  let emitter;
-
-  beforeEach(function () {
-    emitter = new SimpleEmitter();
-  });
-
-  it('constructs an event emitter', function () {
-    expect(emitter).to.have.property('on');
-    expect(emitter).to.have.property('off');
-    expect(emitter).to.have.property('emit');
-    expect(emitter).to.have.property('listenerCount');
-    expect(emitter).to.have.property('removeAllListeners');
-  });
-
-  describe('#listenerCount', function () {
-    it('counts all event listeners without any arg', function () {
-      expect(emitter.listenerCount()).to.be(0);
-      emitter.on('a', function () {});
-      expect(emitter.listenerCount()).to.be(1);
-      emitter.on('b', function () {});
-      expect(emitter.listenerCount()).to.be(2);
-    });
-
-    it('limits to the event that is passed in', function () {
-      expect(emitter.listenerCount()).to.be(0);
-      emitter.on('a', function () {});
-      expect(emitter.listenerCount('a')).to.be(1);
-      emitter.on('a', function () {});
-      expect(emitter.listenerCount('a')).to.be(2);
-      emitter.on('b', function () {});
-      expect(emitter.listenerCount('a')).to.be(2);
-      expect(emitter.listenerCount('b')).to.be(1);
-      expect(emitter.listenerCount()).to.be(3);
-    });
-  });
-
-  describe('#on', function () {
-    it('registers a handler', function () {
-      const handler = sinon.stub();
-      emitter.on('a', handler);
-      expect(emitter.listenerCount('a')).to.be(1);
-
-      expect(handler.callCount).to.be(0);
-      emitter.emit('a');
-      expect(handler.callCount).to.be(1);
-    });
-
-    it('allows multiple event handlers for the same event', function () {
-      emitter.on('a', function () {});
-      emitter.on('a', function () {});
-      expect(emitter.listenerCount('a')).to.be(2);
-    });
-
-    it('allows the same function to be registered multiple times', function () {
-      const handler = function () {};
-      emitter.on('a', handler);
-      expect(emitter.listenerCount()).to.be(1);
-      emitter.on('a', handler);
-      expect(emitter.listenerCount()).to.be(2);
-    });
-  });
-
-  describe('#off', function () {
-    it('removes a listener if it was registered', function () {
-      const handler = sinon.stub();
-      expect(emitter.listenerCount()).to.be(0);
-      emitter.on('a', handler);
-      expect(emitter.listenerCount('a')).to.be(1);
-      emitter.off('a', handler);
-      expect(emitter.listenerCount('a')).to.be(0);
-    });
-
-    it('clears all listeners if no handler is passed', function () {
-      emitter.on('a', function () {});
-      emitter.on('a', function () {});
-      expect(emitter.listenerCount()).to.be(2);
-      emitter.off('a');
-      expect(emitter.listenerCount()).to.be(0);
-    });
-
-    it('does not mind if the listener is not registered', function () {
-      emitter.off('a', function () {});
-    });
-
-    it('does not mind if the event has no listeners', function () {
-      emitter.off('a');
-    });
-  });
-
-  describe('#emit', function () {
-    it('calls the handlers in the order they were defined', function () {
-      let i = 0;
-      const incr = function () { return ++i; };
-      const one = sinon.spy(incr);
-      const two = sinon.spy(incr);
-      const three = sinon.spy(incr);
-      const four = sinon.spy(incr);
-
-      emitter
-        .on('a', one)
-        .on('a', two)
-        .on('a', three)
-        .on('a', four)
-        .emit('a');
-
-      expect(one).to.have.property('callCount', 1);
-      expect(one.returned(1)).to.be.ok();
-
-      expect(two).to.have.property('callCount', 1);
-      expect(two.returned(2)).to.be.ok();
-
-      expect(three).to.have.property('callCount', 1);
-      expect(three.returned(3)).to.be.ok();
-
-      expect(four).to.have.property('callCount', 1);
-      expect(four.returned(4)).to.be.ok();
-    });
-
-    it('always emits the handlers that were initially registered', function () {
-
-      const destructive = sinon.spy(function () {
-        emitter.removeAllListeners();
-        expect(emitter.listenerCount()).to.be(0);
-      });
-      const stub = sinon.stub();
-
-      emitter.on('run', destructive).on('run', stub).emit('run');
-
-      expect(destructive).to.have.property('callCount', 1);
-      expect(stub).to.have.property('callCount', 1);
-    });
-
-    it('applies all arguments except the first', function () {
-      emitter
-        .on('a', function (a, b, c) {
-          expect(a).to.be('foo');
-          expect(b).to.be('bar');
-          expect(c).to.be('baz');
-        })
-        .emit('a', 'foo', 'bar', 'baz');
-    });
-
-    it('uses the SimpleEmitter as the this context', function () {
-      emitter
-        .on('a', function () {
-          expect(this).to.be(emitter);
-        })
-        .emit('a');
-    });
-  });
-});
diff --git a/src/legacy/ui/public/utils/base_object.ts b/src/legacy/ui/public/utils/base_object.ts
deleted file mode 100644
index 63c7ebf6de5bb65..000000000000000
--- a/src/legacy/ui/public/utils/base_object.ts
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * 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.
- */
-
-import angular from 'angular';
-import _ from 'lodash';
-// @ts-ignore -- awaiting https://github.com/w33ble/rison-node/issues/1
-import rison from 'rison-node';
-
-export class BaseObject {
-  // Set the attributes or default to an empty object
-  constructor(attributes: Record<string, any> = {}) {
-    // Set the attributes or default to an empty object
-    _.assign(this, attributes);
-  }
-
-  public toObject() {
-    // return just the data.
-    return _.omit(this, (value: any, key: string) => {
-      return key.charAt(0) === '$' || key.charAt(0) === '_' || _.isFunction(value);
-    });
-  }
-
-  public toRISON() {
-    // Use Angular to remove the private vars, and JSON.stringify to serialize
-    return rison.encode(JSON.parse(angular.toJson(this)));
-  }
-
-  public toJSON() {
-    return this.toObject();
-  }
-}
diff --git a/src/legacy/ui/public/utils/find_by_param.ts b/src/legacy/ui/public/utils/find_by_param.ts
deleted file mode 100644
index de32fc955a8cd34..000000000000000
--- a/src/legacy/ui/public/utils/find_by_param.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * 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.
- */
-
-import _ from 'lodash';
-
-interface AnyObject {
-  [key: string]: any;
-}
-
-// given an object or array of objects, return the value of the passed param
-// if the param is missing, return undefined
-export function findByParam(values: AnyObject | AnyObject[], param: string) {
-  if (Array.isArray(values)) {
-    // point series chart
-    const index = _.findIndex(values, param);
-    if (index === -1) {
-      return;
-    }
-    return values[index][param];
-  }
-  return values[param]; // pie chart
-}
diff --git a/src/legacy/ui/public/utils/simple_emitter.js b/src/legacy/ui/public/utils/simple_emitter.js
index 84397962c286b01..503798ba160dbb0 100644
--- a/src/legacy/ui/public/utils/simple_emitter.js
+++ b/src/legacy/ui/public/utils/simple_emitter.js
@@ -18,8 +18,6 @@
  */
 
 import _ from 'lodash';
-import { BaseObject } from './base_object';
-import { createLegacyClass } from './legacy_class';
 
 /**
  * Simple event emitter class used in the vislib. Calls
@@ -27,7 +25,6 @@ import { createLegacyClass } from './legacy_class';
  *
  * @class
  */
-createLegacyClass(SimpleEmitter).inherits(BaseObject);
 export function SimpleEmitter() {
   this._listeners = {};
 }
@@ -134,4 +131,3 @@ SimpleEmitter.prototype.listenerCount = function (name) {
     return count + _.size(handlers);
   }, 0);
 };
-
diff --git a/src/legacy/ui/public/utils/simple_emitter.test.js b/src/legacy/ui/public/utils/simple_emitter.test.js
new file mode 100644
index 000000000000000..ff884a12be7ee87
--- /dev/null
+++ b/src/legacy/ui/public/utils/simple_emitter.test.js
@@ -0,0 +1,173 @@
+/*
+ * 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.
+ */
+
+import { SimpleEmitter } from './simple_emitter';
+import sinon from 'sinon';
+
+describe('SimpleEmitter class', () => {
+  let emitter;
+
+  beforeEach(() => {
+    emitter = new SimpleEmitter();
+  });
+
+  it('constructs an event emitter', () => {
+    expect(emitter).toHaveProperty('on');
+    expect(emitter).toHaveProperty('off');
+    expect(emitter).toHaveProperty('emit');
+    expect(emitter).toHaveProperty('listenerCount');
+    expect(emitter).toHaveProperty('removeAllListeners');
+  });
+
+  describe('#listenerCount',  () => {
+    it('counts all event listeners without any arg', () => {
+      expect(emitter.listenerCount()).toBe(0);
+      emitter.on('a', () => {});
+      expect(emitter.listenerCount()).toBe(1);
+      emitter.on('b', () => {});
+      expect(emitter.listenerCount()).toBe(2);
+    });
+
+    it('limits to the event that is passed in', () => {
+      expect(emitter.listenerCount()).toBe(0);
+      emitter.on('a', () => {});
+      expect(emitter.listenerCount('a')).toBe(1);
+      emitter.on('a', () => {});
+      expect(emitter.listenerCount('a')).toBe(2);
+      emitter.on('b', () => {});
+      expect(emitter.listenerCount('a')).toBe(2);
+      expect(emitter.listenerCount('b')).toBe(1);
+      expect(emitter.listenerCount()).toBe(3);
+    });
+  });
+
+  describe('#on', () => {
+    it('registers a handler', () => {
+      const handler = sinon.stub();
+      emitter.on('a', handler);
+      expect(emitter.listenerCount('a')).toBe(1);
+
+      expect(handler.callCount).toBe(0);
+      emitter.emit('a');
+      expect(handler.callCount).toBe(1);
+    });
+
+    it('allows multiple event handlers for the same event', () => {
+      emitter.on('a', () => {});
+      emitter.on('a', () => {});
+      expect(emitter.listenerCount('a')).toBe(2);
+    });
+
+    it('allows the same function to be registered multiple times', () => {
+      const handler = () => {};
+      emitter.on('a', handler);
+      expect(emitter.listenerCount()).toBe(1);
+      emitter.on('a', handler);
+      expect(emitter.listenerCount()).toBe(2);
+    });
+  });
+
+  describe('#off', () => {
+    it('removes a listener if it was registered', () => {
+      const handler = sinon.stub();
+      expect(emitter.listenerCount()).toBe(0);
+      emitter.on('a', handler);
+      expect(emitter.listenerCount('a')).toBe(1);
+      emitter.off('a', handler);
+      expect(emitter.listenerCount('a')).toBe(0);
+    });
+
+    it('clears all listeners if no handler is passed', () => {
+      emitter.on('a', () => {});
+      emitter.on('a', () => {});
+      expect(emitter.listenerCount()).toBe(2);
+      emitter.off('a');
+      expect(emitter.listenerCount()).toBe(0);
+    });
+
+    it('does not mind if the listener is not registered', () => {
+      emitter.off('a', () => {});
+    });
+
+    it('does not mind if the event has no listeners', () => {
+      emitter.off('a');
+    });
+  });
+
+  describe('#emit', () => {
+    it('calls the handlers in the order they were defined',  () => {
+      let i = 0;
+      const incr =  () => ++i;
+      const one = sinon.spy(incr);
+      const two = sinon.spy(incr);
+      const three = sinon.spy(incr);
+      const four = sinon.spy(incr);
+
+      emitter
+        .on('a', one)
+        .on('a', two)
+        .on('a', three)
+        .on('a', four)
+        .emit('a');
+
+      expect(one).toHaveProperty('callCount', 1);
+      expect(one.returned(1)).toBeDefined();
+
+      expect(two).toHaveProperty('callCount', 1);
+      expect(two.returned(2)).toBeDefined();
+
+      expect(three).toHaveProperty('callCount', 1);
+      expect(three.returned(3)).toBeDefined();
+
+      expect(four).toHaveProperty('callCount', 1);
+      expect(four.returned(4)).toBeDefined();
+    });
+
+    it('always emits the handlers that were initially registered',  () => {
+      const destructive = sinon.spy(() => {
+        emitter.removeAllListeners();
+        expect(emitter.listenerCount()).toBe(0);
+      });
+      const stub = sinon.stub();
+
+      emitter.on('run', destructive).on('run', stub).emit('run');
+
+      expect(destructive).toHaveProperty('callCount', 1);
+      expect(stub).toHaveProperty('callCount', 1);
+    });
+
+    it('applies all arguments except the first', () => {
+      emitter
+        .on('a', (a, b, c) => {
+          expect(a).toBe('foo');
+          expect(b).toBe('bar');
+          expect(c).toBe('baz');
+        })
+        .emit('a', 'foo', 'bar', 'baz');
+    });
+
+    it('uses the SimpleEmitter as the this context', () => {
+      emitter
+        .on('a', function () {
+          expect(this).toBe(emitter);
+        })
+        .emit('a');
+    });
+  });
+});