diff --git a/CHANGELOG.md b/CHANGELOG.md
index 024faae..25de607 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## next
 
+- Added `@discoveryjs/discovery/utils` export
 - Renamed `Widget` class into `ViewModel`
 - Modified `PageRenderer#define()` and `ViewRenderer#define()` to allow specifying all options with a single config parameter:
   ```js
diff --git a/package.json b/package.json
index eefd5de..ef88975 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,10 @@
             "discovery-dev": "./src/lib.js",
             "default": "./lib/lib.js"
         },
+        "./utils": {
+            "discovery-dev": "./src/core/utils/index.js",
+            "default": "./lib/core/utils/index.js"
+        },
         "./dist/*": "./dist/*",
         "./lib/*": "./lib/*",
         "./src/*": {
diff --git a/src/core/utils/base64.ts b/src/core/utils/base64.ts
index 27d590d..d24a9cc 100644
--- a/src/core/utils/base64.ts
+++ b/src/core/utils/base64.ts
@@ -57,10 +57,10 @@ export function encodeBytes(input: string | number[] | Uint8Array): Uint8Array {
 }
 
 export function decode(input: string): string {
-    return decoder.decode(decodeBase64Bytes(input));
+    return decoder.decode(decodeBytes(input));
 }
 
-export function decodeBase64Bytes(input: string): Uint8Array {
+export function decodeBytes(input: string): Uint8Array {
     let inputSize = input.length;
 
     // ignore trailing "=" (padding)
diff --git a/src/core/utils/compare.ts b/src/core/utils/compare.ts
index 5bd5bab..46a232a 100644
--- a/src/core/utils/compare.ts
+++ b/src/core/utils/compare.ts
@@ -7,7 +7,7 @@ export function equal(a: any, b: any, compare = Object.is) {
         return true;
     }
 
-    if (!a || typeof a !== 'object' || !b || typeof b !== 'object') {
+    if (typeof a !== 'object' || a === null || typeof b !== 'object' || b === null) {
         return false;
     }
 
diff --git a/src/core/utils/container-styles.ts b/src/core/utils/container-styles.ts
index 786711f..4bc4799 100644
--- a/src/core/utils/container-styles.ts
+++ b/src/core/utils/container-styles.ts
@@ -2,7 +2,7 @@ import { InitValue, resolveDarkmodeValue } from '../darkmode.js';
 
 type Styles = Record<string, string>;
 type SavedStyles = Record<string, [string, string]>;
-type ApplyContainerStylesOptions = {
+export type ApplyContainerStylesOptions = {
     darkmode?: InitValue,
     darkmodePersistent?: boolean;
 };
diff --git a/src/core/utils/debounce.ts b/src/core/utils/debounce.ts
index 70862da..5247a69 100644
--- a/src/core/utils/debounce.ts
+++ b/src/core/utils/debounce.ts
@@ -4,12 +4,12 @@
  * Adopted for Discovery.js project
  */
 
-type Options = {
+export type DebounceOptions = {
     wait: number;
     maxWait?: number;
     leading?: boolean;
 }
-type DebounceMethods<R> = {
+export type DebounceMethods<R> = {
     cancel(): void;
     flush(): R;
     pending(): boolean;
@@ -85,7 +85,7 @@ export function debounce<
     T extends (...args: A) => R,
     A extends any[],
     R
->(func: T, options?: Options | number): T & DebounceMethods<R> {
+>(func: T, options?: DebounceOptions | number): T & DebounceMethods<R> {
     if (typeof func !== 'function') {
         throw new TypeError('Expected a function');
     }
diff --git a/src/core/utils/dom.ts b/src/core/utils/dom.ts
index 9492728..bb1d5c1 100644
--- a/src/core/utils/dom.ts
+++ b/src/core/utils/dom.ts
@@ -1,19 +1,18 @@
 /* eslint-env browser */
 import { hasOwn } from './object-utils.js';
 
-type EventHandler<Element, Event> = (this: Element, evt: Event) => void;
-type Attrs<TagName extends keyof HTMLElementTagNameMap> = {
-  [key in keyof HTMLElementEventMap as `on${key}`]?: EventHandler<
-    HTMLElementTagNameMap[TagName],
-    HTMLElementEventMap[key]
-  >;
+export type CreateElementAttrs<TagName extends keyof HTMLElementTagNameMap> = {
+  [key in keyof HTMLElementEventMap as `on${key}`]?: (
+    this: HTMLElementTagNameMap[TagName],
+    evt: HTMLElementEventMap[key]
+  ) => void;
 } & {
   [key: string]: any | undefined; // TODO: replace "any" with "string"
 };
 
 export function createElement<TagName extends keyof HTMLElementTagNameMap>(
     tag: TagName,
-    attrs?: Attrs<TagName> | string | null,
+    attrs?: CreateElementAttrs<TagName> | string | null,
     children?: (Node | string)[] | string
 ) {
     const el = document.createElement(tag);
diff --git a/src/core/utils/index.js b/src/core/utils/index.js
deleted file mode 100644
index 687f7f4..0000000
--- a/src/core/utils/index.js
+++ /dev/null
@@ -1,41 +0,0 @@
-import * as containerStyles from './container-styles.js';
-import * as base64 from './base64.js';
-import * as compare from './compare.js';
-import { copyText } from './copy-text.js';
-import { debounce } from './debounce.js';
-import * as dom from './dom.js';
-import * as html from './html.js';
-import { injectStyles } from './inject-styles.js';
-import * as types from './is-type.js';
-import * as json from './json.js';
-import * as layout from './layout.js';
-import * as dataLoad from './load-data.js';
-import * as objectUtils from './object-utils.js';
-import * as pattern from './pattern.js';
-import * as persistent from './persistent.js';
-import * as pointer from './pointer.js';
-import { Progressbar } from './progressbar.js';
-import { safeFilterRx } from './safe-filter-rx.js';
-import * as size from './size.js';
-
-export default {
-    ...containerStyles,
-    base64,
-    ...compare,
-    copyText,
-    ...dataLoad,
-    debounce,
-    ...dom,
-    ...html,
-    injectStyles,
-    ...types,
-    ...objectUtils,
-    ...json,
-    ...layout,
-    pattern,
-    persistent,
-    ...pointer,
-    Progressbar,
-    safeFilterRx,
-    ...size
-};
diff --git a/src/core/utils/index.ts b/src/core/utils/index.ts
new file mode 100644
index 0000000..62e3938
--- /dev/null
+++ b/src/core/utils/index.ts
@@ -0,0 +1,26 @@
+export * as base64 from './base64.js';
+export { equal, deepEqual } from './compare.js';
+export type { ApplyContainerStylesOptions } from './container-styles.js';
+export { applyContainerStyles, rollbackContainerStyles } from './container-styles.js';
+export { copyText } from './copy-text.js';
+export { debounce } from './debounce.js';
+export type { CreateElementAttrs } from './dom.js';
+export { createElement, createFragment, createText, isDocumentFragment, passiveCaptureOptions, passiveSupported } from './dom.js';
+export { randomId } from './id.js';
+export { escapeHtml, numDelim } from './html.js';
+export type { InjectStyle, InjectInlineStyle, InjectLinkStyle } from './inject-styles.js';
+export { injectStyles } from './inject-styles.js';
+export type { TypedArray } from './is-type.js';
+export { isTypedArray, isArray, isSet, isRegExp } from './is-type.js';
+export { jsonStringifyAsJavaScript, jsonStringifyInfo } from './json.js';
+export { getBoundingRect, getOffsetParent, getOverflowParent, getPageOffset, getViewportRect } from './layout.js';
+export type * from './load-data.js';
+export * from './load-data.js';
+export { objectToString, hasOwn } from './object-utils.js';
+export { match, matchAll } from './pattern.js';
+export { localStorageEntry, sessionStorageEntry } from './persistent.js';
+export { pointerXY } from './pointer.js';
+export type * from './progressbar.js';
+export { Progressbar } from './progressbar.js';
+export { safeFilterRx } from './safe-filter-rx.js';
+export { ContentRect } from './size.js';
diff --git a/src/core/utils/inject-styles.ts b/src/core/utils/inject-styles.ts
index 6224399..623d1ec 100644
--- a/src/core/utils/inject-styles.ts
+++ b/src/core/utils/inject-styles.ts
@@ -1,18 +1,18 @@
 import { createElement } from './dom.js';
 
-export type Style = string | InlineStyle | LinkStyle;
-export type InlineStyle = {
+export type InjectStyle = string | InjectInlineStyle | InjectLinkStyle;
+export type InjectInlineStyle = {
     type: 'style' | 'inline';
     content: string;
     media?: string;
 };
-export type LinkStyle = {
+export type InjectLinkStyle = {
     type: 'link' | 'external';
     href: string;
     media?: string;
 };
 
-export async function injectStyles(el: HTMLElement | ShadowRoot, styles?: Style[]) {
+export async function injectStyles(el: HTMLElement | ShadowRoot, styles?: InjectStyle[]) {
     const foucFix = createElement('style', null, ':host{display:none}');
     const awaitingStyles = new Set<Promise<void>>();
 
diff --git a/src/core/utils/is-type.ts b/src/core/utils/is-type.ts
index c526f73..f453353 100644
--- a/src/core/utils/is-type.ts
+++ b/src/core/utils/is-type.ts
@@ -1,6 +1,6 @@
 import { objectToString } from './object-utils.js';
 
-type TypedArray =
+export type TypedArray =
     | Uint8Array
     | Uint8ClampedArray
     | Uint16Array
diff --git a/src/core/utils/layout.ts b/src/core/utils/layout.ts
index 2d79258..8b6a378 100644
--- a/src/core/utils/layout.ts
+++ b/src/core/utils/layout.ts
@@ -1,6 +1,6 @@
 /* eslint-env browser */
 const { documentElement } = document;
-const standartsMode = document.compatMode === 'CSS1Compat';
+const standardsMode = document.compatMode === 'CSS1Compat';
 
 export function getOffsetParent(node: HTMLElement) {
     let offsetParent = node.offsetParent as HTMLElement;
@@ -42,7 +42,7 @@ export function getPageOffset(element: HTMLElement | null = null) {
         left = -rect.left;
     } else {
         // offset relative to page
-        if (standartsMode) {
+        if (standardsMode) {
             top = window.pageYOffset || documentElement.scrollTop;
             left = window.pageXOffset || documentElement.scrollLeft;
         } else {
@@ -90,7 +90,7 @@ export function getViewportRect(
     element: HTMLElement | Window,
     relElement: HTMLElement | null = null
 ) {
-    const topViewport = standartsMode ? document.documentElement : document.body;
+    const topViewport = standardsMode ? document.documentElement : document.body;
     let { top, left } = element === topViewport && !relElement
         ? getPageOffset()
         : getBoundingRect(element, relElement);
diff --git a/src/core/utils/pattern.ts b/src/core/utils/pattern.ts
index 593f9c7..a594f1c 100644
--- a/src/core/utils/pattern.ts
+++ b/src/core/utils/pattern.ts
@@ -12,7 +12,7 @@ function matchWithString(str: string, pattern: string, lastIndex: number) {
     return offset !== -1 ? { offset, length: pattern.length } : null;
 };
 
-export function has(text: string, pattern: RegExp | string | null, ignoreCase = false) {
+export function match(text: string, pattern: RegExp | string | null, ignoreCase = false) {
     if (isRegExp(pattern)) {
         return ignoreCase && !pattern.ignoreCase
             ? new RegExp(pattern, pattern.flags + 'i').test(text)
diff --git a/src/core/utils/persistent.ts b/src/core/utils/persistent.ts
index 5c63591..38c58d0 100644
--- a/src/core/utils/persistent.ts
+++ b/src/core/utils/persistent.ts
@@ -1,6 +1,10 @@
 import { Emitter } from '../emitter.js';
 
 export type StorageType = 'localStorage' | 'sessionStorage';
+export type StorageMap = Map<string, PersistentKey> & {
+    storage: Storage | null;
+    getOrCreate: PersistentKeyGetOrCreate;
+};
 export type PersistentValue = string | null;
 export type PersistentKey = {
     readonly value: PersistentValue,
@@ -15,11 +19,7 @@ export type PersistentKeyEvents = {
     change: [value: PersistentValue];
     foo: [];
 }
-export type StorageMap = Map<string, PersistentKey> & {
-    storage: Storage | null;
-    getOrCreate: GetOrCreate;
-};
-export type GetOrCreate = ((key: string) => PersistentKey) & {
+export type PersistentKeyGetOrCreate = ((key: string) => PersistentKey) & {
     available: boolean;
 };
 
diff --git a/src/core/utils/progressbar.ts b/src/core/utils/progressbar.ts
index 1de6e4d..7f345b6 100644
--- a/src/core/utils/progressbar.ts
+++ b/src/core/utils/progressbar.ts
@@ -1,21 +1,21 @@
 import { Observer } from '../observer.js';
 import { createElement } from './dom.js';
 
-export type Stage = keyof typeof loadStages;
-export type Timing = {
-    stage: Stage;
+export type ProgressbarStage = keyof typeof loadStages;
+export type ProgressbarTiming = {
+    stage: ProgressbarStage;
     title: string;
     duration: number;
 };
-export type OnTimingCallback = (timing: Timing) => void;
-export type OnFinishCallback = (timings: Timing[] & { awaitRepaintPenaltyTime: number }) => void;
+export type ProgressbarOnTimingCallback = (timing: ProgressbarTiming) => void;
+export type ProgressbarOnFinishCallback = (timings: ProgressbarTiming[] & { awaitRepaintPenaltyTime: number }) => void;
 export type ProgressbarOptions = Partial<{
-    onTiming: OnTimingCallback;
-    onFinish: OnFinishCallback;
+    onTiming: ProgressbarOnTimingCallback;
+    onFinish: ProgressbarOnFinishCallback;
     domReady: Promise<any>;
 }>;
 export type ProgressbarState = {
-    stage: Stage;
+    stage: ProgressbarStage;
     progress: {
         done: boolean;
         elapsed: number;
@@ -86,7 +86,7 @@ const letRepaintIfNeeded = async () => {
     }
 };
 
-export function decodeStageProgress(stage: Stage, progress: ProgressbarState['progress'], step?: string) {
+export function decodeStageProgress(stage: ProgressbarStage, progress: ProgressbarState['progress'], step?: string) {
     const { value, title: stageTitle, duration } = loadStages[stage];
     let progressValue = 0;
     let progressText: string | null = null;
@@ -132,9 +132,9 @@ export class Progressbar extends Observer<ProgressbarState> {
     awaitRepaintPenaltyTime: number;
     finished: boolean;
     awaitRepaint: number | null;
-    timings: Timing[];
-    onTiming: OnTimingCallback;
-    onFinish: OnFinishCallback;
+    timings: ProgressbarTiming[];
+    onTiming: ProgressbarOnTimingCallback;
+    onFinish: ProgressbarOnFinishCallback;
     appearanceDelay: number;
     domReady: Promise<any>;
     el: HTMLElement;
@@ -163,8 +163,8 @@ export class Progressbar extends Observer<ProgressbarState> {
         ]);
     }
 
-    recordTiming(stage: Stage, start: number, end = performance.now()) {
-        const entry: Timing = {
+    recordTiming(stage: ProgressbarStage, start: number, end = performance.now()) {
+        const entry: ProgressbarTiming = {
             stage,
             title: loadStages[stage].title,
             duration: int(end - start)
diff --git a/src/core/utils/size.ts b/src/core/utils/size.ts
index ce331dc..f634b4c 100644
--- a/src/core/utils/size.ts
+++ b/src/core/utils/size.ts
@@ -3,6 +3,8 @@ import { Observer } from '../observer.js';
 const resizeObserverSupported = typeof ResizeObserver === 'function';
 
 export class ContentRect extends Observer<DOMRectReadOnly | null> {
+    static supported = resizeObserverSupported;
+
     private el: HTMLElement | null;
     private observer: ResizeObserver | null;
 
diff --git a/src/lib.ts b/src/lib.ts
index 92f7d55..d2a6758 100644
--- a/src/lib.ts
+++ b/src/lib.ts
@@ -8,7 +8,7 @@ import router from './extensions/router.js';
 import embed from './extensions/embed-client.js';
 import { buttons as navButtons } from './nav/index.js';
 import { encoding as jsonxl } from './core/encodings/jsonxl.js';
-import utils from './core/utils/index.js';
+import * as utils from './core/utils/index.js';
 
 export type * from './main/index.js';
 export {
diff --git a/src/main/app.ts b/src/main/app.ts
index 0abfb3b..b82f4f7 100644
--- a/src/main/app.ts
+++ b/src/main/app.ts
@@ -2,7 +2,7 @@
 
 import type { SetDataProgressOptions, ViewModelEvents, ViewModelOptions } from './view-model.js';
 import type { LoadDataBaseOptions, LoadDataResult } from '../core/utils/load-data.js';
-import type { Style } from '../core/utils/inject-styles.js';
+import type { InjectStyle } from '../core/utils/inject-styles.js';
 import type { ProgressbarOptions } from '../core/utils/progressbar.js';
 import type { UploadOptions } from '../extensions/upload.js';
 import { hasOwn } from '../core/utils/object-utils.js';
@@ -222,7 +222,7 @@ export class App<
         super.unloadData();
     }
 
-    initDom(styles?: Style[]) {
+    initDom(styles?: InjectStyle[]) {
         super.initDom(styles);
 
         this.dom.container.append(
diff --git a/src/main/view-model.ts b/src/main/view-model.ts
index 9c37616..5646f65 100644
--- a/src/main/view-model.ts
+++ b/src/main/view-model.ts
@@ -2,7 +2,7 @@
 
 import type { ModelEvents, ModelOptions, PageParams, PageRef, SetDataOptions } from './model.js';
 import type { Dataset } from '../core/utils/load-data.js';
-import type { Style } from '../core/utils/inject-styles.js';
+import type { InjectStyle } from '../core/utils/inject-styles.js';
 import type { PageOptionName, PageOptions } from '../core/page.js';
 import type { SingleViewConfig } from '../core/view.js';
 import type { Progressbar } from '../core/utils/progressbar.js';
@@ -63,7 +63,7 @@ export interface ViewModelEvents extends ModelEvents {
 }
 export interface ViewModelOptions<T = ViewModel> extends ModelOptions<T> {
     container: HTMLElement;
-    styles: Style[];
+    styles: InjectStyle[];
 
     compact: boolean;
     darkmode: InitValue;
@@ -324,7 +324,7 @@ export class ViewModel<
     // UI
     //
 
-    initDom(styles?: Style[]) {
+    initDom(styles?: InjectStyle[]) {
         const wrapper = createElement('div', 'discovery');
         const shadow = wrapper.attachShadow({ mode: 'open' });
         const readyStyles = injectStyles(shadow, styles);
diff --git a/src/preloader.ts b/src/preloader.ts
index cc409f6..bea82ce 100644
--- a/src/preloader.ts
+++ b/src/preloader.ts
@@ -1,5 +1,5 @@
 import type { InitValue } from './core/darkmode.js';
-import type { Style } from './core/utils/inject-styles.js';
+import type { InjectStyle } from './core/utils/inject-styles.js';
 import type { LoadDataBaseOptions, LoadDataFetchOptions, LoadDataResult } from './core/utils/load-data.js';
 import { hasOwn } from './core/utils/object-utils.js';
 import { randomId } from './core/utils/id.js';
@@ -12,7 +12,7 @@ type PushDataLoading = ReturnType<typeof dataSource['push']>;
 export type PreloaderOptions = {
     dataSource: keyof typeof dataSource;
     container: HTMLElement;
-    styles: Style[];
+    styles: InjectStyle[];
     darkmode: InitValue;
     darkmodePersistent: boolean;
     embed: boolean;