@cosmjs/utils

Data Manipulation

The `arrayContentEquals` function checks if two arrays have the same content. This is useful for comparing arrays without worrying about the order of elements.

const { arrayContentEquals } = require('@cosmjs/utils');

const array1 = [1, 2, 3];
const array2 = [1, 2, 3];
const array3 = [4, 5, 6];

console.log(arrayContentEquals(array1, array2)); // true
console.log(arrayContentEquals(array1, array3)); // false

Encoding/Decoding

The `toHex` and `fromHex` functions are used to convert data to and from hexadecimal strings. This is particularly useful for encoding binary data in a human-readable format.

const { toHex, fromHex } = require('@cosmjs/utils');

const data = new Uint8Array([1, 2, 3, 4]);
const hexString = toHex(data);
console.log(hexString); // '01020304'

const decodedData = fromHex(hexString);
console.log(decodedData); // Uint8Array [ 1, 2, 3, 4 ]

String Manipulation

The `assert` and `assertDefined` functions are used for validation. `assert` checks if a condition is true, while `assertDefined` ensures that a value is not undefined. These functions help in writing robust code by enforcing certain conditions.

const { assert, assertDefined } = require('@cosmjs/utils');

const value = 'Hello, World!';
assert(value.length > 0, 'Value should not be empty');

const definedValue = 'CosmJS';
assertDefined(definedValue, 'Value should be defined');