## API Report File for "@tldraw/utils"

> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).

```ts

// @internal
export function annotateError(error: unknown, annotations: Partial<ErrorAnnotations>): void;

// @internal (undocumented)
export const assert: (value: unknown, message?: string) => asserts value;

// @internal (undocumented)
export const assertExists: <T>(value: T, message?: string | undefined) => NonNullable<T>;

// @internal (undocumented)
export function compact<T>(arr: T[]): NonNullable<T>[];

// @public
export function debounce<T extends unknown[], U>(callback: (...args: T) => PromiseLike<U> | U, wait: number): {
    (...args: T): Promise<U>;
    cancel(): void;
};

// @public
export function dedupe<T>(input: T[], equals?: (a: any, b: any) => boolean): T[];

// @public
export function deepCopy<T = unknown>(obj: T): T;

// @public (undocumented)
export type ErrorResult<E> = {
    readonly ok: false;
    readonly error: E;
};

// @internal (undocumented)
export function exhaustiveSwitchError(value: never, property?: string): never;

// @public (undocumented)
export type Expand<T> = T extends infer O ? {
    [K in keyof O]: O[K];
} : never;

// @internal
export function filterEntries<Key extends string, Value>(object: {
    [K in Key]: Value;
}, predicate: (key: Key, value: Value) => boolean): {
    [K in Key]: Value;
};

// @internal (undocumented)
export function getErrorAnnotations(error: Error): ErrorAnnotations;

// @public
export function getFirstFromIterable<T = unknown>(set: Map<any, T> | Set<T>): T;

// @public
export function getHashForObject(obj: any): string;

// @public
export function getHashForString(string: string): string;

// @internal (undocumented)
export function getOwnProperty<K extends string, V>(obj: Partial<Record<K, V>>, key: K): undefined | V;

// @internal (undocumented)
export function getOwnProperty(obj: object, key: string): unknown;

// @internal (undocumented)
export function hasOwnProperty(obj: object, key: string): boolean;

// @public
export function isDefined<T>(value: T): value is typeof value extends undefined ? never : T;

// @public
export function isNonNull<T>(value: T): value is typeof value extends null ? never : T;

// @public
export function isNonNullish<T>(value: T): value is typeof value extends undefined ? never : typeof value extends null ? never : T;

// @internal (undocumented)
export function last<T>(arr: readonly T[]): T | undefined;

// @public
export function lerp(a: number, b: number, t: number): number;

// @public (undocumented)
export function lns(str: string): string;

// @internal
export function mapObjectMapValues<Key extends string, ValueBefore, ValueAfter>(object: {
    readonly [K in Key]: ValueBefore;
}, mapper: (key: Key, value: ValueBefore) => ValueAfter): {
    [K in Key]: ValueAfter;
};

// @internal (undocumented)
export function minBy<T>(arr: readonly T[], fn: (item: T) => number): T | undefined;

// @public
export function modulate(value: number, rangeA: number[], rangeB: number[], clamp?: boolean): number;

// @internal
export function noop(): void;

// @internal
export function objectMapEntries<Key extends string, Value>(object: {
    [K in Key]: Value;
}): Array<[Key, Value]>;

// @internal
export function objectMapFromEntries<Key extends string, Value>(entries: ReadonlyArray<readonly [Key, Value]>): {
    [K in Key]: Value;
};

// @internal
export function objectMapKeys<Key extends string>(object: {
    readonly [K in Key]: unknown;
}): Array<Key>;

// @internal
export function objectMapValues<Key extends string, Value>(object: {
    [K in Key]: Value;
}): Array<Value>;

// @public (undocumented)
export type OkResult<T> = {
    readonly ok: true;
    readonly value: T;
};

// @internal
export function omitFromStackTrace<Args extends Array<unknown>, Return>(fn: (...args: Args) => Return): (...args: Args) => Return;

// @internal
export function partition<T>(arr: T[], predicate: (item: T) => boolean): [T[], T[]];

// @internal (undocumented)
export function promiseWithResolve<T>(): Promise<T> & {
    resolve: (value: T) => void;
    reject: (reason?: any) => void;
};

// @internal
export function rafThrottle(fn: () => void): () => void;

// @public (undocumented)
export type RecursivePartial<T> = {
    [P in keyof T]?: RecursivePartial<T[P]>;
};

// @internal (undocumented)
type Required_2<T, K extends keyof T> = Expand<Omit<T, K> & _Required<Pick<T, K>>>;
export { Required_2 as Required }

// @public (undocumented)
export type Result<T, E> = ErrorResult<E> | OkResult<T>;

// @public (undocumented)
export const Result: {
    ok<T>(value: T): OkResult<T>;
    err<E>(error: E): ErrorResult<E>;
};

// @public
export function rng(seed?: string): () => number;

// @public
export function rotateArray<T>(arr: T[], offset: number): T[];

// @public (undocumented)
export function sortById<T extends {
    id: any;
}>(a: T, b: T): -1 | 1;

// @public (undocumented)
const structuredClone_2: <T>(i: T) => T;
export { structuredClone_2 as structuredClone }

// @public
export function throttle<T extends (...args: any) => any>(func: T, limit: number): (...args: Parameters<T>) => ReturnType<T>;

// @internal
export function throttledRaf(fn: () => void): void;

// (No @packageDocumentation comment for this package)

```