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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@noble/curves
Просмотр файла: utils.d.ts
export { abytes, anumber, bytesToHex, bytesToUtf8, concatBytes, hexToBytes, isBytes, randomBytes, utf8ToBytes, } from '@noble/hashes/utils.js';
export type Hex = Uint8Array | string;
export type PrivKey = Hex | bigint;
export type CHash = {
(message: Uint8Array | string): Uint8Array;
blockLen: number;
outputLen: number;
create(opts?: {
dkLen?: number;
}): any;
};
export type FHash = (message: Uint8Array | string) => Uint8Array;
export declare function abool(title: string, value: boolean): void;
export declare function _abool2(value: boolean, title?: string): boolean;
/** Asserts something is Uint8Array. */
export declare function _abytes2(value: Uint8Array, length?: number, title?: string): Uint8Array;
export declare function numberToHexUnpadded(num: number | bigint): string;
export declare function hexToNumber(hex: string): bigint;
export declare function bytesToNumberBE(bytes: Uint8Array): bigint;
export declare function bytesToNumberLE(bytes: Uint8Array): bigint;
export declare function numberToBytesBE(n: number | bigint, len: number): Uint8Array;
export declare function numberToBytesLE(n: number | bigint, len: number): Uint8Array;
export declare function numberToVarBytesBE(n: number | bigint): Uint8Array;
/**
* Takes hex string or Uint8Array, converts to Uint8Array.
* Validates output length.
* Will throw error for other types.
* @param title descriptive title for an error e.g. 'secret key'
* @param hex hex string or Uint8Array
* @param expectedLength optional, will compare to result array's length
* @returns
*/
export declare function ensureBytes(title: string, hex: Hex, expectedLength?: number): Uint8Array;
export declare function equalBytes(a: Uint8Array, b: Uint8Array): boolean;
/**
* Copies Uint8Array. We can't use u8a.slice(), because u8a can be Buffer,
* and Buffer#slice creates mutable copy. Never use Buffers!
*/
export declare function copyBytes(bytes: Uint8Array): Uint8Array;
/**
* Decodes 7-bit ASCII string to Uint8Array, throws on non-ascii symbols
* Should be safe to use for things expected to be ASCII.
* Returns exact same result as utf8ToBytes for ASCII or throws.
*/
export declare function asciiToBytes(ascii: string): Uint8Array;
export declare function inRange(n: bigint, min: bigint, max: bigint): boolean;
/**
* Asserts min <= n < max. NOTE: It's < max and not <= max.
* @example
* aInRange('x', x, 1n, 256n); // would assume x is in (1n..255n)
*/
export declare function aInRange(title: string, n: bigint, min: bigint, max: bigint): void;
/**
* Calculates amount of bits in a bigint.
* Same as `n.toString(2).length`
* TODO: merge with nLength in modular
*/
export declare function bitLen(n: bigint): number;
/**
* Gets single bit at position.
* NOTE: first bit position is 0 (same as arrays)
* Same as `!!+Array.from(n.toString(2)).reverse()[pos]`
*/
export declare function bitGet(n: bigint, pos: number): bigint;
/**
* Sets single bit at position.
*/
export declare function bitSet(n: bigint, pos: number, value: boolean): bigint;
/**
* Calculate mask for N bits. Not using ** operator with bigints because of old engines.
* Same as BigInt(`0b${Array(i).fill('1').join('')}`)
*/
export declare const bitMask: (n: number) => bigint;
type Pred<T> = (v: Uint8Array) => T | undefined;
/**
* Minimal HMAC-DRBG from NIST 800-90 for RFC6979 sigs.
* @returns function that will call DRBG until 2nd arg returns something meaningful
* @example
* const drbg = createHmacDRBG<Key>(32, 32, hmac);
* drbg(seed, bytesToKey); // bytesToKey must return Key or undefined
*/
export declare function createHmacDrbg<T>(hashLen: number, qByteLen: number, hmacFn: (key: Uint8Array, ...messages: Uint8Array[]) => Uint8Array): (seed: Uint8Array, predicate: Pred<T>) => T;
declare const validatorFns: {
readonly bigint: (val: any) => boolean;
readonly function: (val: any) => boolean;
readonly boolean: (val: any) => boolean;
readonly string: (val: any) => boolean;
readonly stringOrUint8Array: (val: any) => boolean;
readonly isSafeInteger: (val: any) => boolean;
readonly array: (val: any) => boolean;
readonly field: (val: any, object: any) => any;
readonly hash: (val: any) => boolean;
};
type Validator = keyof typeof validatorFns;
type ValMap<T extends Record<string, any>> = {
[K in keyof T]?: Validator;
};
export declare function validateObject<T extends Record<string, any>>(object: T, validators: ValMap<T>, optValidators?: ValMap<T>): T;
export declare function isHash(val: CHash): boolean;
export declare function _validateObject(object: Record<string, any>, fields: Record<string, string>, optFields?: Record<string, string>): void;
/**
* throws not implemented error
*/
export declare const notImplemented: () => never;
/**
* Memoizes (caches) computation result.
* Uses WeakMap: the value is going auto-cleaned by GC after last reference is removed.
*/
export declare function memoized<T extends object, R, O extends any[]>(fn: (arg: T, ...args: O) => R): (arg: T, ...args: O) => R;
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