@zilliqa-js/util
Advanced tools
Utility functions useful in Zilliqa-related programs.
BNSee documentation at bn.js. This is
simply a re-export of that library to prevent bloating other @zilliqa-js
packages, most of which depend on bn.js in small ways.
LongSee documentation at long.js. This is
simply a re-export for similar reasons. Note that long is only required if
you need to serialise integers with size greater than or equal to 2^53.
intToHexArray(int: number, size: number): string[]Converts an integer to an array of hexadecimal strings (little endian). Size is the total length of bytes to pad to.
Parameters
int: number - the decimal number to convert.Returns
string[] - hexadecimal array representation of the decimal number.intToByteArray(num: number, size: number): Uint8ArrayConverts an integer to a Uint8Array (i.e., byte array).
Parameters
num: number - the decimal number to convertReturns
Uint8Array - byte array, padded to size.hexToByteArray(hex: string): Uint8ArrayConverts a hex-encoded string to a Uint8Array. Endianess is not important.
Parameters
hex: stringReturns
Uint8ArrayhexToIntArray(hex: string): number[]Converts a hex-encoded string to an array of integers.
Parameters
hex: stringReturns
number[]pack(a: number, b: number): numberPerforms bitwise addition of two 16-bit numbers, returning a 32-bit number. Throws if either number exceeds 16 bits.
Parameters
a: number - a 16-bit number.b: number - a 16-bit number.Returns
number - the combined 32-bit number.compareBytes(a: string, b: string): booleanPerforms a constant time comparison of two hexadecimal values. This avoids timing attacks.
Parameters
a: string - hex-encoded string.b: string - hex-encoded string.Returns
boolean - true if the values are equal.isHex(str: string): booleanDetermines if a given string is hex-encoded.
Parameters
str: string.Returns
boolean - true if the string is hex-encoded.isAddress(address: string): booleanDetermines if a given string is a valid address.
Parameters
address: string.Returns
boolean - true if the string is an address.isBech32(address: string): booleanDetermines if a given string is a valid Zilliqa bech32 address.
Parameters
address: string.Returns
boolean - true if the string is a valid Zilliqa bech32 address.isPrivateKey(privateKey: string): booleanDetermines if a given string is a valid private key.
Parameters
privateKey: string.Returns
boolean - true if the string is a valid private key.isPubKey(pubKey: string): booleanDetermines if a given string is a valid uncompressed public key.
Parameters
pubKey: string.Returns
boolean - true if the string is a valid public key.isSignature(sig: string): booleanDetermines if a given string is a valid Schnorr signature.
Parameters
sig: stringReturns
boolean - true if the string is a valid signature.isNumber(x: unknown): booleanDetermines if a given value is a valid JS number.
Parameters
x: unknownReturns
boolean - true if the string is a valid signature.isBN(x: unknown): booleanDetermines if a given value is an instance of BN.js.
Parameters
x: unknownReturns
boolean - true if the value is a BN instance.isString(x: unknown): booleanDetermines if a given value is a valid JS string.
Parameters
x: unknownReturns
boolean - true if the value is a string.isPlainObject(x: unknown): booleanDetermines if a given value is a plain JS object (i.e. directly below
Object in the prototype chain).
Parameters
x: unknownReturns
boolean - true if the value is a plain object.matchesObject(x: unknown, test: { [key: string]: Validator[] }): booleanDetermines if a value has the shape specified by test.
Parameters
x: unknowntest: { [key: string]: Validator[] }Returns
boolean - true if the value matches test.fromQa(qa: BN, unit: Units, options: Options)Converts from qa (smallest unit) to zil or li.
Parameters
qa: BN - the value to convert from.unit: Units - the unit to be converted to ('zil' | 'qa').options: Options - an object specifying options.toQa(input: string | number | BN, unit: Units)Converts zil or li to qa (smallest unit).
Parameters
input: string | number | BN - the value to convert from.unit: Units - the unit to be converted from ('zil' | 'li').FAQs
Utilities for working with Zilliqa.
The npm package @zilliqa-js/util receives a total of 1,935 weekly downloads. As such, @zilliqa-js/util popularity was classified as popular.
We found that @zilliqa-js/util demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 6 open source maintainers collaborating on the project.
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