diff --git a/webapp/packages/core-utils/src/GlobalConstants.test.ts b/webapp/packages/core-utils/src/GlobalConstants.test.ts
new file mode 100644
index 0000000000..c2ae017301
--- /dev/null
+++ b/webapp/packages/core-utils/src/GlobalConstants.test.ts
@@ -0,0 +1,129 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { GlobalConstants } from './GlobalConstants';
+
+jest.mock('./isValidUrl', () => ({
+  isValidUrl: jest.fn().mockReturnValue(false),
+}));
+
+jest.mock('./pathJoin', () => ({
+  pathJoin: jest.fn((...args: string[]) => args.reduce((acc, arg) => acc + arg, '')),
+}));
+
+describe('GlobalConstants', () => {
+  let windowSpy: jest.SpyInstance;
+
+  beforeEach(() => {
+    windowSpy = jest.spyOn(window, 'window', 'get');
+  });
+
+  afterEach(() => {
+    windowSpy.mockRestore();
+  });
+
+  beforeEach(() => {
+    (global as any)._DEV_ = true;
+    (global as any)._VERSION_ = '1.0.0';
+    (global as any)._ROOT_URI_ = '{ROOT_URI}';
+
+    windowSpy.mockImplementation(
+      () =>
+        ({
+          location: {
+            protocol: 'http:',
+            host: 'localhost',
+          },
+        }) as any,
+    );
+  });
+
+  it('should return correct dev value', () => {
+    expect(GlobalConstants.dev).toBe(true);
+  });
+
+  it('should return correct version value', () => {
+    expect(GlobalConstants.version).toBe('1.0.0');
+  });
+
+  it('should return correct protocol value', () => {
+    expect(GlobalConstants.protocol).toBe('http:');
+  });
+
+  it('should return correct host value', () => {
+    expect(GlobalConstants.host).toBe('localhost');
+  });
+
+  it('should return correct websocket protocol', () => {
+    expect(GlobalConstants.wsProtocol).toBe('ws:');
+
+    windowSpy.mockImplementationOnce(
+      () =>
+        ({
+          location: {
+            protocol: 'https:',
+          },
+        }) as any,
+    );
+
+    expect(GlobalConstants.wsProtocol).toBe('wss:');
+  });
+
+  it('should return correct rootURI value', () => {
+    expect(GlobalConstants.rootURI).toBe('/');
+
+    (global as any)._ROOT_URI_ = 'http://localhost:8080';
+    (require('./isValidUrl').isValidUrl as jest.Mock).mockReturnValueOnce(true);
+
+    expect(GlobalConstants.rootURI).toBe('/');
+
+    (global as any)._ROOT_URI_ = '/dbeaver';
+    expect(GlobalConstants.rootURI).toBe('/dbeaver/');
+  });
+
+  it('should return correct serviceURI value', () => {
+    expect(GlobalConstants.serviceURI).toBe('/api');
+  });
+
+  it('should return correct health check url', () => {
+    expect(GlobalConstants.getHealthCheckUrl('http://localhost')).toBe('http://localhost/status');
+    expect(GlobalConstants.getHealthCheckUrl('')).toBe('/status');
+  });
+
+  it('should generate absolute root url', () => {
+    expect(GlobalConstants.absoluteRootUrl('test/', 'test2')).toBe('/test/test2');
+  });
+
+  it('should generate absolute service url', () => {
+    expect(GlobalConstants.absoluteServiceUrl('/test/', 'test2')).toBe('/api/test/test2');
+  });
+
+  it('should generate absoluteServiceHTTPUrl', () => {
+    expect(GlobalConstants.absoluteServiceHTTPUrl('/test/', 'test2')).toBe('http://localhost/api/test/test2');
+  });
+
+  it('should generate absoluteServiceWSUrl', () => {
+    expect(GlobalConstants.absoluteServiceWSUrl('/test/', 'test2')).toBe('ws://localhost/api/test/test2');
+
+    windowSpy.mockImplementationOnce(
+      () =>
+        ({
+          location: {
+            protocol: 'https:',
+            host: 'localhost',
+          },
+        }) as any,
+    );
+
+    expect(GlobalConstants.absoluteServiceWSUrl('/test/', 'test2')).toBe('wss://localhost/api/test/test2');
+  });
+
+  it('should generate absolute url', () => {
+    expect(GlobalConstants.absoluteUrl('test/', 'test2')).toBe('/test/test2');
+    expect(GlobalConstants.absoluteUrl('platform:test/', 'test2')).toBe('/apiimagesplatform:test/test2');
+  });
+});
diff --git a/webapp/packages/core-utils/src/ILoadableState.test.ts b/webapp/packages/core-utils/src/ILoadableState.test.ts
new file mode 100644
index 0000000000..7d141c08f0
--- /dev/null
+++ b/webapp/packages/core-utils/src/ILoadableState.test.ts
@@ -0,0 +1,135 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { getFirstException, ILoadableState, isContainsException, isLoadableStateHasException } from './ILoadableState';
+
+const getMockedLoadableState = (state: Partial<ILoadableState>): ILoadableState => ({
+  exception: null,
+  isLoading: () => false,
+  isLoaded: () => false,
+  isError: () => false,
+  load: () => undefined,
+  ...state,
+});
+
+describe('isContainsException', () => {
+  it('should return true if exception is present', () => {
+    expect(isContainsException(new Error())).toBe(true);
+  });
+
+  it('should return false if exception is not present', () => {
+    expect(isContainsException(null)).toBe(false);
+  });
+
+  it('should check array of exceptions', () => {
+    expect(isContainsException([null, new Error()])).toBe(true);
+    expect(isContainsException([null, null])).toBe(false);
+    expect(isContainsException([])).toBe(false);
+  });
+});
+
+describe('getFirstException', () => {
+  it('should return first exception', () => {
+    const error = new Error();
+    const error2 = new Error('error2');
+
+    expect(getFirstException([null, error, error2])).toBe(error);
+    expect(getFirstException([null, error])).toBe(error);
+    expect(getFirstException([error])).toBe(error);
+    expect(getFirstException(error)).toBe(error);
+  });
+
+  it('should not get exception', () => {
+    expect(getFirstException([null, null])).toBe(null);
+    expect(getFirstException([null])).toBe(null);
+    expect(getFirstException([])).toBe(null);
+    expect(getFirstException(null)).toBe(null);
+  });
+});
+
+describe('isLoadableStateHasException', () => {
+  it('should return true if exception is present', () => {
+    expect(
+      isLoadableStateHasException(
+        getMockedLoadableState({
+          exception: [new Error(), new Error('error2')],
+          isError() {
+            return true;
+          },
+        }),
+      ),
+    ).toBe(true);
+
+    expect(
+      isLoadableStateHasException(
+        getMockedLoadableState({
+          exception: [new Error()],
+          isError() {
+            return true;
+          },
+        }),
+      ),
+    ).toBe(true);
+
+    expect(
+      isLoadableStateHasException(
+        getMockedLoadableState({
+          exception: new Error(),
+          isError() {
+            return true;
+          },
+        }),
+      ),
+    ).toBe(true);
+
+    expect(
+      isLoadableStateHasException(
+        getMockedLoadableState({
+          exception: [null, new Error()],
+          isError() {
+            return true;
+          },
+        }),
+      ),
+    ).toBe(true);
+  });
+
+  it('should return false if exception is not present', () => {
+    expect(
+      isLoadableStateHasException(
+        getMockedLoadableState({
+          exception: [],
+          isError() {
+            return false;
+          },
+        }),
+      ),
+    ).toBe(false);
+
+    expect(
+      isLoadableStateHasException(
+        getMockedLoadableState({
+          exception: null,
+          isError() {
+            return false;
+          },
+        }),
+      ),
+    ).toBe(false);
+
+    expect(
+      isLoadableStateHasException(
+        getMockedLoadableState({
+          exception: [null, null],
+          isError() {
+            return false;
+          },
+        }),
+      ),
+    ).toBe(false);
+  });
+});
diff --git a/webapp/packages/core-utils/src/ILoadableState.ts b/webapp/packages/core-utils/src/ILoadableState.ts
index 31db51562f..455f5ce063 100644
--- a/webapp/packages/core-utils/src/ILoadableState.ts
+++ b/webapp/packages/core-utils/src/ILoadableState.ts
@@ -21,10 +21,6 @@ export interface ILoadableState {
   cancel?: () => void;
 }
 
-// export function composeLoadableState(...states: ILoadableState[]): ILoadableState {
-
-// }
-
 export function isLoadableStateHasException(state: ILoadableState): boolean {
   return isContainsException(state.exception);
 }
diff --git a/webapp/packages/core-utils/src/MetadataMap.test.ts b/webapp/packages/core-utils/src/MetadataMap.test.ts
new file mode 100644
index 0000000000..e3e8417fd4
--- /dev/null
+++ b/webapp/packages/core-utils/src/MetadataMap.test.ts
@@ -0,0 +1,219 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { z } from 'zod';
+
+import { MetadataMap } from './MetadataMap';
+
+describe('MetadataMap', () => {
+  it('should create an empty map', () => {
+    const map = new MetadataMap<number, string>();
+
+    expect(map.size).toBe(0);
+  });
+
+  it('should sync items', () => {
+    const map = new MetadataMap<number, string>();
+    const emptyMap = new MetadataMap<number, string>();
+
+    const data: [number, string][] = [
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+      [Infinity, 'infinity'],
+      [NaN, 'nan'],
+    ];
+
+    map.sync(data);
+    emptyMap.sync([]);
+
+    data.forEach(([key, value]) => {
+      expect(map.get(key)).toBe(value);
+    });
+
+    expect(emptyMap.size).toBe(0);
+  });
+
+  it('should set items', () => {
+    const map = new MetadataMap<number, string>();
+    map.set(1, 'one');
+    map.set(2, 'two');
+    map.set(3, 'three');
+    map.set(Infinity, 'infinity');
+    map.set(NaN, 'nan');
+
+    expect(map.get(1)).toBe('one');
+    expect(map.get(2)).toBe('two');
+    expect(map.get(3)).toBe('three');
+    expect(map.get(Infinity)).toBe('infinity');
+    expect(map.get(NaN)).toBe('nan');
+  });
+
+  it('should throw an error if validation failed and no default value getter', () => {
+    const map = new MetadataMap<number, string>();
+    map.sync([
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ]);
+
+    expect(() => map.get(1, undefined, z.object({}))).toThrow();
+  });
+
+  it('should get function default value if validation failed', () => {
+    const map = new MetadataMap<number, string>();
+    map.sync([
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ]);
+
+    expect(map.get(1, key => `default ${key}`, z.object({}))).toBe('default 1');
+  });
+
+  it('should return default value for non existing element using default getter in constructor', () => {
+    const map = new MetadataMap<number, string>(key => `default ${key}`);
+
+    expect(map.get(1)).toBe('default 1');
+    expect(map.get(Infinity)).toBe('default Infinity');
+    expect(map.get(NaN)).toBe('default NaN');
+  });
+
+  it('should return size', () => {
+    const map = new MetadataMap<number, string>();
+    map.sync([
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ]);
+
+    expect(map.size).toBe(3);
+  });
+
+  it('should return iterator', () => {
+    const map = new MetadataMap<number, string>();
+    const data: [number, string][] = [
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ];
+    map.sync(data);
+
+    for (const [key, value] of map) {
+      expect(map.get(key)).toBe(value);
+    }
+  });
+
+  it('should iterate keys', () => {
+    const map = new MetadataMap<number, string>();
+    const data: [number, string][] = [
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ];
+    const keys = data.map(([key]) => key);
+
+    map.sync(data);
+
+    for (const key of map.keys()) {
+      expect(key).toBe(keys.shift());
+    }
+  });
+
+  it('should iterate values', () => {
+    const map = new MetadataMap<number, string>();
+    const data: [number, string][] = [
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ];
+    const values = data.map(([, value]) => value);
+    map.sync(data);
+
+    for (const value of map.values()) {
+      expect(value).toBe(values.shift());
+    }
+  });
+
+  it('should iterate entries', () => {
+    const map = new MetadataMap<number, string>();
+    const data: [number, string][] = [
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ];
+    map.sync(data);
+
+    for (const [key, value] of map.entries()) {
+      expect([key, value]).toStrictEqual(data.shift());
+    }
+  });
+
+  it('should check if key exists', () => {
+    const map = new MetadataMap<number, string>();
+    map.sync([
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ]);
+
+    expect(map.has(1)).toBeTruthy();
+    expect(map.has(2)).toBeTruthy();
+    expect(map.has(3)).toBeTruthy();
+    expect(map.has(4)).toBeFalsy();
+  });
+
+  it('should clear', () => {
+    const map = new MetadataMap<number, string>();
+    map.sync([
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ]);
+
+    map.clear();
+
+    expect(map.size).toBe(0);
+  });
+
+  it('should delete items', () => {
+    const map = new MetadataMap<number, string>();
+    const data: [number, string][] = [
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ];
+
+    map.sync(data);
+
+    map.delete(2);
+    map.delete(4);
+    data.splice(1, 1);
+
+    expect(map.has(2)).toBeFalsy();
+    expect(Array.from(map)).toEqual(data);
+  });
+
+  it('should forEach', () => {
+    const map = new MetadataMap<number, string>();
+    map.sync([
+      [1, 'one'],
+      [2, 'two'],
+      [3, 'three'],
+    ]);
+
+    map.forEach((value, key) => {
+      expect(map.get(key)).toBe(value);
+    });
+  });
+
+  it('has to string tag', () => {
+    const map = new MetadataMap<number, string>();
+
+    expect(map[Symbol.toStringTag]).toBe('MetadataMap');
+  });
+});
diff --git a/webapp/packages/core-utils/src/MetadataMap.ts b/webapp/packages/core-utils/src/MetadataMap.ts
index 7f31c47c37..1ab435c3f0 100644
--- a/webapp/packages/core-utils/src/MetadataMap.ts
+++ b/webapp/packages/core-utils/src/MetadataMap.ts
@@ -75,6 +75,8 @@ export class MetadataMap<TKey, TValue> implements Map<TKey, TValue> {
     return this;
   }
 
+  // TODO replace zod schema with just validation callback returning true/false.
+  // In case we use something else than zod
   get(key: TKey, defaultValue?: DefaultValueGetter<TKey, TValue>, schema?: schema.AnyZodObject): TValue {
     const value = this.temp.get(key);
     let invalidate = !this.temp.has(key);
@@ -95,7 +97,9 @@ export class MetadataMap<TKey, TValue> implements Map<TKey, TValue> {
       }
 
       const value = provider(key, this);
-      this.temp.set(key, observable(value as any));
+      const isNotPrimitiveValue = typeof value === 'object' && value !== null;
+
+      this.temp.set(key, isNotPrimitiveValue ? observable(value) : value);
     }
 
     return this.temp.get(key)!;
diff --git a/webapp/packages/core-utils/src/Promises/CancellablePromise.test.ts b/webapp/packages/core-utils/src/Promises/CancellablePromise.test.ts
new file mode 100644
index 0000000000..6567d21db3
--- /dev/null
+++ b/webapp/packages/core-utils/src/Promises/CancellablePromise.test.ts
@@ -0,0 +1,52 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { CancellablePromise } from './CancellablePromise';
+import { PromiseCancelledError } from './PromiseCancelledError';
+
+describe('CancellablePromise', () => {
+  jest.mock('./PromiseCancelledError', () => ({
+    PromiseCancelledError: jest.fn(),
+  }));
+
+  it('cancels promise', async () => {
+    const PromiseCancelledErrorMockInstance = new PromiseCancelledError();
+    const promise = new CancellablePromise<void>(resolve => {
+      const token = setTimeout(() => resolve(), 0);
+      return () => {
+        clearTimeout(token);
+      };
+    });
+
+    promise.cancel();
+
+    await expect(promise).rejects.toThrow(PromiseCancelledErrorMockInstance);
+  });
+
+  it('should resolve promise', async () => {
+    const promise = new CancellablePromise<number>(resolve => {
+      const token = setTimeout(() => resolve(777), 0);
+      return () => {
+        clearTimeout(token);
+      };
+    });
+
+    await expect(promise).resolves.toBe(777);
+  });
+
+  it('should reject promise', async () => {
+    const error = new Error('test');
+    const promise = new CancellablePromise<number>((resolve, reject) => {
+      const token = setTimeout(() => reject(error), 0);
+      return () => {
+        clearTimeout(token);
+      };
+    });
+
+    await expect(promise).rejects.toThrow(error);
+  });
+});
diff --git a/webapp/packages/core-utils/src/Promises/cancellableTimeout.test.ts b/webapp/packages/core-utils/src/Promises/cancellableTimeout.test.ts
new file mode 100644
index 0000000000..e2dae82cba
--- /dev/null
+++ b/webapp/packages/core-utils/src/Promises/cancellableTimeout.test.ts
@@ -0,0 +1,31 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { cancellableTimeout } from './cancellableTimeout';
+
+jest.mock('./CancellablePromise', () => ({
+  CancellablePromise: jest.fn().mockImplementation(() => ({
+    cancel: jest.fn(),
+  })),
+}));
+
+describe('cancellableTimeout', () => {
+  jest.useFakeTimers();
+
+  it('resolves after the specified timeout', async () => {
+    const timeout = 0;
+    const start = Date.now();
+
+    const promise = cancellableTimeout(timeout);
+
+    await promise;
+
+    jest.advanceTimersByTime(timeout);
+
+    expect(Date.now() - start).toBe(timeout);
+  });
+});
diff --git a/webapp/packages/core-utils/src/Promises/cancellableTimeout.ts b/webapp/packages/core-utils/src/Promises/cancellableTimeout.ts
new file mode 100644
index 0000000000..3b20a14c59
--- /dev/null
+++ b/webapp/packages/core-utils/src/Promises/cancellableTimeout.ts
@@ -0,0 +1,17 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { CancellablePromise } from './CancellablePromise';
+
+export function cancellableTimeout(timeout: number): CancellablePromise<void> {
+  return new CancellablePromise<void>(resolve => {
+    const token = setTimeout(() => resolve(), timeout);
+    return () => {
+      clearTimeout(token);
+    };
+  });
+}
diff --git a/webapp/packages/core-utils/src/Promises/deferPromise.ts b/webapp/packages/core-utils/src/Promises/deferPromise.ts
deleted file mode 100644
index 36b8eda9a9..0000000000
--- a/webapp/packages/core-utils/src/Promises/deferPromise.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * CloudBeaver - Cloud Database Manager
- * Copyright (C) 2020-2024 DBeaver Corp and others
- *
- * Licensed under the Apache License, Version 2.0.
- * you may not use this file except in compliance with the License.
- */
-import { CancellablePromise } from './CancellablePromise';
-
-type PromiseExecutor<T> = (resolve: (value: T) => void, reject: (reason?: any) => void) => void;
-
-/**
- * wait timeout milliseconds then start to execute promise.
- * During the timeout the execution of promise can be cancelled.
- *
- * @param executor
- * @param timeout
- */
-export function deferPromise<T>(executor: PromiseExecutor<T>, timeout: number): CancellablePromise<T> {
-  return new CancellablePromise<T>((resolve, reject) => {
-    const token = setTimeout(() => executor(resolve, reject), timeout);
-    return () => {
-      clearTimeout(token);
-    };
-  });
-}
-
-export function cancellableTimeout(timeout: number): CancellablePromise<void> {
-  return new CancellablePromise<void>(resolve => {
-    const token = setTimeout(() => resolve(), timeout);
-    return () => {
-      clearTimeout(token);
-    };
-  });
-}
diff --git a/webapp/packages/core-utils/src/TempMap.test.ts b/webapp/packages/core-utils/src/TempMap.test.ts
new file mode 100644
index 0000000000..a26134b192
--- /dev/null
+++ b/webapp/packages/core-utils/src/TempMap.test.ts
@@ -0,0 +1,283 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { TempMap } from './TempMap';
+
+describe('TempMap', () => {
+  it('should create empty map', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    expect(map.size).toBe(0);
+    expect(target.size).toBe(0);
+    expect(Array.from(map.entries()).length).toBe(0);
+  });
+
+  it('should set and get values', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+
+    expect(map.get('test')).toBe('test value');
+    expect(map.get('test2')).toBe('test value2');
+  });
+
+  it('should delete values', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.delete('test');
+
+    expect(map.get('test')).toBeUndefined();
+    expect(map.isDeleted('test')).toBe(true);
+  });
+
+  it('should clear values', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+    map.clear();
+
+    expect(map.get('test')).toBeUndefined();
+    expect(map.get('test2')).toBeUndefined();
+  });
+
+  it('should delete deleted values after map being cleared', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.delete('test');
+    expect(map.isDeleted('test')).toBe(true);
+    map.clear();
+
+    expect(map.get('test')).toBeUndefined();
+    expect(map.isDeleted('test')).toBe(false);
+  });
+
+  it('should remove item from deleted map if it was set again', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.delete('test');
+
+    expect(map.isDeleted('test')).toBe(true);
+
+    map.set('test', 'test value2');
+
+    expect(map.get('test')).toBe('test value2');
+    expect(map.isDeleted('test')).toBe(false);
+  });
+
+  it('should have for each items', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+
+    const values: string[] = [];
+    const keys: string[] = [];
+    map.forEach((value, key) => {
+      values.push(value);
+      keys.push(key);
+    });
+
+    expect(values).toEqual(['test value', 'test value2']);
+    expect(keys).toEqual(['test', 'test2']);
+  });
+
+  it('should for each items and not include deleted', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+    map.delete('test');
+
+    const values: string[] = [];
+    const keys: string[] = [];
+    map.forEach((value, key) => {
+      values.push(value);
+      keys.push(key);
+    });
+
+    expect(values).toEqual(['test value2']);
+    expect(keys).toEqual(['test2']);
+    expect(map.isDeleted('test')).toBe(true);
+  });
+
+  it('should check if key exists in the map', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+    map.delete('test');
+
+    expect(map.has('test')).toBe(false);
+    expect(map.has('test2')).toBe(true);
+  });
+
+  it('should get keys', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+
+    expect(Array.from(map.keys())).toEqual(['test', 'test2']);
+  });
+
+  it('should get values', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+
+    expect(Array.from(map.values())).toEqual(['test value', 'test value2']);
+  });
+
+  it('should get entries', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+
+    expect(Array.from(map.entries())).toEqual([
+      ['test', 'test value'],
+      ['test2', 'test value2'],
+    ]);
+  });
+
+  it('should get size', () => {
+    const map = new TempMap<string, string>(new Map());
+
+    map.set('test', 'test value');
+    map.set('test2', 'test value2');
+
+    expect(map.size).toBe(2);
+  });
+
+  it('should only delete target value', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    map.set('test', 'test value');
+    target.delete('test');
+
+    expect(map.get('test')).toBe('test value');
+    expect(target.get('test')).toBeUndefined();
+  });
+
+  it('should set target value and also be available in temp map', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    target.set('test', 'test value2');
+
+    expect(map.get('test')).toBe('test value2');
+    expect(target.get('test')).toBe('test value2');
+  });
+
+  it('should combine keys from target and temp map', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    target.set('test', 'test value2');
+    map.set('test2', 'test value');
+
+    expect(Array.from(map.keys())).toEqual(['test', 'test2']);
+  });
+
+  it('should combine entries from target and temp map', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    target.set('test', 'test value2');
+    map.set('test2', 'test value');
+
+    expect(Array.from(map.entries())).toEqual([
+      ['test', 'test value2'],
+      ['test2', 'test value'],
+    ]);
+  });
+
+  it('should combine values from target and temp map', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    target.set('test', 'test value2');
+    map.set('test2', 'test value');
+
+    expect(Array.from(map.values())).toEqual(['test value2', 'test value']);
+  });
+
+  it('should has target value in temp map', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    target.set('test', 'test value2');
+
+    expect(map.has('test')).toBe(true);
+  });
+
+  it('should be iterable', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    target.set('test', 'test value2');
+    map.set('test2', 'test value');
+
+    const values: string[] = [];
+    const keys: string[] = [];
+    for (const [key, value] of map) {
+      values.push(value);
+      keys.push(key);
+    }
+
+    expect(values).toEqual(['test value2', 'test value']);
+    expect(keys).toEqual(['test', 'test2']);
+  });
+
+  it('should not get deleted keys', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    map.set('test', 'test value2');
+    map.set('test2', 'test value');
+    map.delete('test2');
+
+    expect(Array.from(map.keys())).toEqual(['test']);
+  });
+
+  it('should not get deleted values', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    map.set('test', 'test value2');
+    map.set('test2', 'test value');
+    map.delete('test2');
+
+    expect(Array.from(map.values())).toEqual(['test value2']);
+  });
+
+  it('should not get deleted entries', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    map.set('test', 'test value2');
+    map.set('test2', 'test value');
+    map.delete('test2');
+
+    expect(Array.from(map.entries())).toEqual([['test', 'test value2']]);
+  });
+
+  it('should has toStringTag', () => {
+    const target = new Map();
+    const map = new TempMap<string, string>(target);
+
+    expect(map[Symbol.toStringTag]).toBe('TempMap');
+  });
+});
diff --git a/webapp/packages/core-utils/src/errorOf.test.ts b/webapp/packages/core-utils/src/errorOf.test.ts
new file mode 100644
index 0000000000..1919afc252
--- /dev/null
+++ b/webapp/packages/core-utils/src/errorOf.test.ts
@@ -0,0 +1,56 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { errorOf } from './errorOf';
+
+describe('errorOf', () => {
+  it('should return error of the specified type', () => {
+    class TestError extends Error {}
+
+    const error = new TestError('test');
+    const result = errorOf(error, TestError);
+
+    expect(result).toBe(error);
+    expect(result).toBeInstanceOf(TestError);
+    expect(result?.message).toBe('test');
+  });
+
+  it('should return error of the specified type from the cause', () => {
+    class TestError extends Error {}
+    class AnotherError extends Error {
+      cause: Error;
+
+      constructor(message: string, cause: Error) {
+        super(message);
+        this.cause = cause;
+      }
+    }
+
+    const error = new TestError('test');
+    const testError = new AnotherError('another', error);
+    const result = errorOf(testError, TestError);
+
+    expect(result).toBeInstanceOf(TestError);
+  });
+
+  it('should return undefined if error is not of the specified type', () => {
+    const error = new Error('test');
+    const result = errorOf(error, TypeError);
+
+    expect(result).toBeUndefined();
+  });
+
+  it('should return undefined if error is not an instance of Error', () => {
+    expect(errorOf({ message: 'test' }, Error)).toBeUndefined();
+    expect(errorOf(undefined, Error)).toBeUndefined();
+    expect(errorOf(null, Error)).toBeUndefined();
+    expect(errorOf(0, Error)).toBeUndefined();
+    expect(errorOf('', Error)).toBeUndefined();
+    expect(errorOf(true, Error)).toBeUndefined();
+    expect(errorOf(Symbol(), Error)).toBeUndefined();
+  });
+});
diff --git a/webapp/packages/core-utils/src/index.ts b/webapp/packages/core-utils/src/index.ts
index a421b6e031..a54e923531 100644
--- a/webapp/packages/core-utils/src/index.ts
+++ b/webapp/packages/core-utils/src/index.ts
@@ -6,7 +6,7 @@
  * you may not use this file except in compliance with the License.
  */
 export * from './Promises/CancellablePromise';
-export * from './Promises/deferPromise';
+export * from './Promises/cancellableTimeout';
 export * from './Promises/Deferred';
 export * from './Promises/PromiseCancelledError';
 export * from './Promises/PromiseExecutor';
@@ -72,7 +72,6 @@ export * from './createPath';
 export * from './debounce';
 export * from './schema';
 export * from './schemaValidationError';
-export * from './setByPath';
 export * from './svgToDataUri';
 export * from './TempMap';
 export * from './textToHex';
@@ -80,7 +79,6 @@ export * from './uriToBlob';
 export * from './utf8ToBase64';
 export * from './createLastPromiseGetter';
 export * from './removeMetadataFromDataURL';
-export * from './renamePathName';
 export * from './removeLineBreak';
 export * from './replaceSubstring';
 export * from './formatNumber';
diff --git a/webapp/packages/core-utils/src/openCenteredPopup.test.ts b/webapp/packages/core-utils/src/openCenteredPopup.test.ts
new file mode 100644
index 0000000000..887ab553ad
--- /dev/null
+++ b/webapp/packages/core-utils/src/openCenteredPopup.test.ts
@@ -0,0 +1,67 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { openCenteredPopup } from './openCenteredPopup';
+
+describe('openCenteredPopup', () => {
+  let windowSpy: jest.SpyInstance;
+  const params = {
+    url: 'http://localhost:3000',
+    target: 'target',
+    width: 500,
+    height: 500,
+    features: 'features',
+  };
+
+  beforeEach(() => {
+    windowSpy = jest.spyOn(window, 'window', 'get');
+  });
+
+  afterEach(() => {
+    windowSpy.mockRestore();
+  });
+
+  it('should open centered popup', () => {
+    const windowMock = {
+      top: {
+        outerWidth: 1000,
+        screenY: 100,
+        screenX: 100,
+        outerHeight: 1000,
+      },
+      screen: {
+        availWidth: 1000,
+      },
+      open: jest.fn(),
+    };
+
+    windowSpy.mockImplementation(() => windowMock);
+
+    const { url, target, width, height, features } = params;
+
+    const result = openCenteredPopup({ url, target, width, height, features });
+
+    expect(result).toBe(windowMock.open());
+    expect(windowMock.open).toHaveBeenCalledWith(
+      url,
+      target,
+      `toolbar=no, menubar=no, width=${width}, height=${height}, top=350, left=350${features}`,
+    );
+  });
+
+  it('should return null if window.top is null', () => {
+    const { url, target, width, height, features } = params;
+
+    windowSpy.mockImplementation(() => ({
+      top: null,
+    }));
+
+    const result = openCenteredPopup({ url, target, width, height, features });
+
+    expect(result).toBe(null);
+  });
+});
diff --git a/webapp/packages/core-utils/src/renamePathName.ts b/webapp/packages/core-utils/src/renamePathName.ts
deleted file mode 100644
index 1d05cd36fc..0000000000
--- a/webapp/packages/core-utils/src/renamePathName.ts
+++ /dev/null
@@ -1,13 +0,0 @@
-/*
- * CloudBeaver - Cloud Database Manager
- * Copyright (C) 2020-2024 DBeaver Corp and others
- *
- * Licensed under the Apache License, Version 2.0.
- * you may not use this file except in compliance with the License.
- */
-import { createPath } from './createPath';
-import { getPathParent } from './getPathParent';
-
-export function renamePathName(path: string, name: string): string {
-  return createPath(getPathParent(path), name);
-}
diff --git a/webapp/packages/core-utils/src/setByPath.ts b/webapp/packages/core-utils/src/setByPath.ts
deleted file mode 100644
index 2312e60ab0..0000000000
--- a/webapp/packages/core-utils/src/setByPath.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * CloudBeaver - Cloud Database Manager
- * Copyright (C) 2020-2024 DBeaver Corp and others
- *
- * Licensed under the Apache License, Version 2.0.
- * you may not use this file except in compliance with the License.
- */
-
-export function setByPath(object: any, path: string, value: any) {
-  const parts = path.split('.');
-  const last = parts.pop();
-
-  if (!last) {
-    return;
-  }
-
-  let current = object;
-
-  for (const part of parts) {
-    if (current[part] === undefined) {
-      current[part] = {};
-    }
-    current = current[part];
-  }
-
-  current[last] = value;
-}
diff --git a/webapp/packages/core-utils/src/utf8ToBase64.test.ts b/webapp/packages/core-utils/src/utf8ToBase64.test.ts
new file mode 100644
index 0000000000..0584c9d3a3
--- /dev/null
+++ b/webapp/packages/core-utils/src/utf8ToBase64.test.ts
@@ -0,0 +1,21 @@
+/*
+ * CloudBeaver - Cloud Database Manager
+ * Copyright (C) 2020-2024 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0.
+ * you may not use this file except in compliance with the License.
+ */
+import { utf8ToBase64 } from './utf8ToBase64';
+
+describe('utf8ToBase64', () => {
+  it('should convert utf8 to base64', () => {
+    expect(utf8ToBase64('test')).toBe('dGVzdA==');
+    expect(utf8ToBase64('')).toBe('');
+    expect(utf8ToBase64('test test')).toBe('dGVzdCB0ZXN0');
+  });
+
+  it('should convert utf8 to base64 with special characters', () => {
+    expect(utf8ToBase64('test % test')).toBe('dGVzdCAlIHRlc3Q=');
+    expect(utf8ToBase64('%')).toBe('JQ==');
+  });
+});