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Текущая директория: /opt/BitGoJS/node_modules/@stacks/common/src
Просмотр файла: utils.ts
import { Logger } from './logger';
// Buffer module from NodeJS that also works in the browser https://www.npmjs.com/package/buffer
// > The trailing slash is important, tells module lookup algorithm to use the npm module
// > named buffer instead of the node.js core module named buffer!
import { Buffer as BufferPolyfill } from 'buffer/';
// There can be small type definition differences between the NodeJS Buffer and polyfill Buffer,
// so export using the type definition from NodeJS (@types/node).
import type { Buffer as NodeJSBuffer } from 'buffer';
import BN from 'bn.js';
const AvailableBufferModule: typeof NodeJSBuffer =
// eslint-disable-next-line node/prefer-global/buffer
typeof Buffer !== 'undefined' ? Buffer : (BufferPolyfill as any);
export { AvailableBufferModule as Buffer };
/**
* @ignore
*/
export const BLOCKSTACK_HANDLER = 'blockstack';
/**
* Time
* @private
* @ignore
*/
export function nextYear() {
return new Date(new Date().setFullYear(new Date().getFullYear() + 1));
}
/**
* Time
* @private
* @ignore
*/
export function nextMonth() {
return new Date(new Date().setMonth(new Date().getMonth() + 1));
}
/**
* Time
* @private
* @ignore
*/
export function nextHour() {
return new Date(new Date().setHours(new Date().getHours() + 1));
}
/**
* Converts megabytes to bytes. Returns 0 if the input is not a finite number.
* @ignore
*/
export function megabytesToBytes(megabytes: number): number {
if (!Number.isFinite(megabytes)) {
return 0;
}
return Math.floor(megabytes * 1024 * 1024);
}
/**
* Calculate the AES-CBC ciphertext output byte length a given input length.
* AES has a fixed block size of 16-bytes regardless key size.
* @ignore
*/
export function getAesCbcOutputLength(inputByteLength: number) {
// AES-CBC block mode rounds up to the next block size.
const cipherTextLength = (Math.floor(inputByteLength / 16) + 1) * 16;
return cipherTextLength;
}
/**
* Calculate the base64 encoded string length for a given input length.
* This is equivalent to the byte length when the string is ASCII or UTF8-8
* encoded.
* @param number
*/
export function getBase64OutputLength(inputByteLength: number) {
const encodedLength = Math.ceil(inputByteLength / 3) * 4;
return encodedLength;
}
/**
* Query Strings
* @private
* @ignore
*/
export function updateQueryStringParameter(uri: string, key: string, value: string) {
const re = new RegExp(`([?&])${key}=.*?(&|$)`, 'i');
const separator = uri.indexOf('?') !== -1 ? '&' : '?';
if (uri.match(re)) {
return uri.replace(re, `$1${key}=${value}$2`);
} else {
return `${uri}${separator}${key}=${value}`;
}
}
/**
* Versioning
* @param {string} v1 - the left half of the version inequality
* @param {string} v2 - right half of the version inequality
* @returns {bool} iff v1 >= v2
* @private
* @ignore
*/
export function isLaterVersion(v1: string, v2: string) {
if (v1 === undefined || v1 === '') {
v1 = '0.0.0';
}
if (v2 === undefined || v1 === '') {
v2 = '0.0.0';
}
const v1tuple = v1.split('.').map(x => parseInt(x, 10));
const v2tuple = v2.split('.').map(x => parseInt(x, 10));
for (let index = 0; index < v2.length; index++) {
if (index >= v1.length) {
v2tuple.push(0);
}
if (v1tuple[index] < v2tuple[index]) {
return false;
}
}
return true;
}
/**
* UUIDs
* @private
* @ignore
*/
export function makeUUID4() {
let d = new Date().getTime();
if (typeof performance !== 'undefined' && typeof performance.now === 'function') {
d += performance.now(); // use high-precision timer if available
}
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, c => {
const r = (d + Math.random() * 16) % 16 | 0;
d = Math.floor(d / 16);
return (c === 'x' ? r : (r & 0x3) | 0x8).toString(16);
});
}
/**
* Checks if both urls pass the same origin check & are absolute
* @param {[type]} uri1 first uri to check
* @param {[type]} uri2 second uri to check
* @return {Boolean} true if they pass the same origin check
* @private
* @ignore
*/
export function isSameOriginAbsoluteUrl(uri1: string, uri2: string) {
try {
const parsedUri1 = new URL(uri1);
const parsedUri2 = new URL(uri2);
const port1 =
parseInt(parsedUri1.port || '0', 10) | 0 || (parsedUri1.protocol === 'https:' ? 443 : 80);
const port2 =
parseInt(parsedUri2.port || '0', 10) | 0 || (parsedUri2.protocol === 'https:' ? 443 : 80);
const match = {
scheme: parsedUri1.protocol === parsedUri2.protocol,
hostname: parsedUri1.hostname === parsedUri2.hostname,
port: port1 === port2,
absolute:
(uri1.includes('http://') || uri1.includes('https://')) &&
(uri2.includes('http://') || uri2.includes('https://')),
};
return match.scheme && match.hostname && match.port && match.absolute;
} catch (error) {
console.log(error);
console.log('Parsing error in same URL origin check');
// Parse error
return false;
}
}
/**
* Returns the global scope `Window`, `WorkerGlobalScope`, or `NodeJS.Global` if available in the
* currently executing environment.
* @see https://developer.mozilla.org/en-US/docs/Web/API/Window/self
* @see https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope/self
* @see https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope
*
* This could be switched to `globalThis` once it is standardized and widely available.
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/globalThis
* @ignore
*/
export function getGlobalScope(): Window {
if (typeof self !== 'undefined') {
return self;
}
if (typeof window !== 'undefined') {
return window;
}
// This function is meant to be called when accessing APIs that are typically only available in
// web-browser/DOM environments, but we also want to support situations where running in Node.js
// environment, and a polyfill was added to the Node.js `global` object scope without adding the
// `window` global object as well.
if (typeof global !== 'undefined') {
return global as unknown as Window;
}
throw new Error(
'Unexpected runtime environment - no supported global scope (`window`, `self`, `global`) available'
);
}
function getAPIUsageErrorMessage(
scopeObject: unknown,
apiName: string,
usageDesc?: string
): string {
if (usageDesc) {
return `Use of '${usageDesc}' requires \`${apiName}\` which is unavailable on the '${scopeObject}' object within the currently executing environment.`;
} else {
return `\`${apiName}\` is unavailable on the '${scopeObject}' object within the currently executing environment.`;
}
}
interface GetGlobalObjectOptions {
/**
* Throw an error if the object is not found.
* @default false
*/
throwIfUnavailable?: boolean;
/**
* Additional information to include in an error if thrown.
*/
usageDesc?: string;
/**
* If the object is not found, return an new empty object instead of undefined.
* Requires [[throwIfUnavailable]] to be falsey.
* @default false
*/
returnEmptyObject?: boolean;
}
/**
* Returns an object from the global scope (`Window` or `WorkerGlobalScope`) if it
* is available within the currently executing environment.
* When executing within the Node.js runtime these APIs are unavailable and will be
* `undefined` unless the API is provided via polyfill.
* @see https://developer.mozilla.org/en-US/docs/Web/API/Window/self
* @ignore
*/
export function getGlobalObject<K extends Extract<keyof Window, string>>(
name: K,
{ throwIfUnavailable, usageDesc, returnEmptyObject }: GetGlobalObjectOptions = {}
): Window[K] | undefined {
let globalScope: Window | undefined = undefined;
try {
globalScope = getGlobalScope();
if (globalScope) {
const obj = globalScope[name];
if (obj) {
return obj;
}
}
} catch (error) {
Logger.error(`Error getting object '${name}' from global scope '${globalScope}': ${error}`);
}
if (throwIfUnavailable) {
const errMsg = getAPIUsageErrorMessage(globalScope, name.toString(), usageDesc);
Logger.error(errMsg);
throw new Error(errMsg);
}
if (returnEmptyObject) {
return {} as any;
}
return undefined;
}
/**
* Returns a specified subset of objects from the global scope (`Window` or `WorkerGlobalScope`)
* if they are available within the currently executing environment.
* When executing within the Node.js runtime these APIs are unavailable will be `undefined`
* unless the API is provided via polyfill.
* @see https://developer.mozilla.org/en-US/docs/Web/API/Window/self
* @ignore
*/
export function getGlobalObjects<K extends Extract<keyof Window, string>>(
names: K[],
{ throwIfUnavailable, usageDesc, returnEmptyObject }: GetGlobalObjectOptions = {}
): Pick<Window, K> {
let globalScope: Window | undefined;
try {
globalScope = getGlobalScope();
} catch (error) {
Logger.error(`Error getting global scope: ${error}`);
if (throwIfUnavailable) {
const errMsg = getAPIUsageErrorMessage(globalScope, names[0].toString(), usageDesc);
Logger.error(errMsg);
throw errMsg;
} else if (returnEmptyObject) {
globalScope = {} as any;
}
}
const result: Pick<Window, K> = {} as any;
for (let i = 0; i < names.length; i++) {
const name = names[i];
try {
if (globalScope) {
const obj = globalScope[name];
if (obj) {
result[name] = obj;
} else if (throwIfUnavailable) {
const errMsg = getAPIUsageErrorMessage(globalScope, name.toString(), usageDesc);
Logger.error(errMsg);
throw new Error(errMsg);
} else if (returnEmptyObject) {
result[name] = {} as any;
}
}
} catch (error) {
if (throwIfUnavailable) {
const errMsg = getAPIUsageErrorMessage(globalScope, name.toString(), usageDesc);
Logger.error(errMsg);
throw new Error(errMsg);
}
}
}
return result;
}
export type IntegerType = number | string | bigint | Uint8Array | BN;
// eslint-disable-next-line node/prefer-global/buffer
export function intToBytes(value: IntegerType, signed: boolean, byteLength: number): Buffer {
return intToBN(value, signed).toArrayLike(AvailableBufferModule, 'be', byteLength);
}
export function intToBN(value: IntegerType, signed: boolean): BN {
const bigInt = intToBigInt(value, signed);
return new BN(bigInt.toString());
}
export function intToBigInt(value: IntegerType, signed: boolean): bigint {
let parsedValue = value;
if (typeof parsedValue === 'number') {
if (!Number.isInteger(parsedValue)) {
throw new RangeError(`Invalid value. Values of type 'number' must be an integer.`);
}
return BigInt(parsedValue);
}
if (typeof parsedValue === 'string') {
// If hex string then convert to buffer then fall through to the buffer condition
if (parsedValue.toLowerCase().startsWith('0x')) {
// Trim '0x' hex-prefix
let hex = parsedValue.slice(2);
// Allow odd-length strings like `0xf` -- some libs output these, or even just `0x${num.toString(16)}`
hex = hex.padStart(hex.length + (hex.length % 2), '0');
parsedValue = AvailableBufferModule.from(hex, 'hex');
} else {
try {
return BigInt(parsedValue);
} catch (error) {
if (error instanceof SyntaxError) {
throw new RangeError(`Invalid value. String integer '${parsedValue}' is not finite.`);
}
}
}
}
if (typeof parsedValue === 'bigint') {
return parsedValue;
}
if (parsedValue instanceof Uint8Array || AvailableBufferModule.isBuffer(parsedValue)) {
if (signed) {
// Allow byte arrays smaller than 128-bits to be passed.
// This allows positive signed ints like `0x08` (8) or negative signed
// ints like `0xf8` (-8) to be passed without having to pad to 16 bytes.
const bn = new BN(parsedValue, 'be').fromTwos(parsedValue.byteLength * 8);
return BigInt(bn.toString());
} else {
return BigInt(new BN(parsedValue, 'be').toString());
}
}
if (parsedValue instanceof BN || BN.isBN(parsedValue)) {
return BigInt(parsedValue.toString());
}
throw new TypeError(
`Invalid value type. Must be a number, bigint, integer-string, hex-string, BN.js instance, or Buffer.`
);
}
export function with0x(value: string): string {
return !value.startsWith('0x') ? `0x${value}` : value;
}
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