markodayan

const { pathsToModuleNameMapper } = require('ts-jest');
const { compilerOptions } = require('./tsconfig.json');

module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths),
  modulePaths: ['<rootDir>'],
};

markodayan

npm i -D jest ts-jest prettier codecov cypress eslint eslint-config-prettier eslint-plugin-react @typescript-eslint/eslint-plugin @typescript-eslint/parser
npm i -D @types/jest 

markodayan

import React from 'react';

interface ChildProps {
  message: string;
}

const Child: React.FC<ChildProps> = ({ message }) => {
  return <div>{message}</div>;
};

markodayan

// Step 1
let data = {
   name: "Chris Redfield",
   age: 30,
   job: "STARS soldier",
};

// Step 2 (Serialisation Step)
let serialised = JSON.stringify(data); 

markodayan

// Step 1 
serialised := receiveSerialisedPayload();

// Step 2 - We can deserialise into a struct with knowledge of the payload structure
type Person struct {
	Name string `json:"name"`
	Age int `json:"age"`
	Job string `json:"job"`
}

markodayan

// We have a string -> "{"name":"Chris Redfield","age":30,"job":"STARS soldier"}"

// The string represented as an array of bytes 
// with decimal values where each byte ranges from 0 - 255
[
  123,  34, 110,  97, 109, 101,  34,  58,  34,  67,
  104, 114, 105, 115,  32,  82, 101, 100, 102, 105,
  101, 108, 100,  34,  44,  34,  97, 103, 101,  34,
   58,  51,  48,  44,  34, 106, 111,  98,  34,  58,
   34,  83,  84,  65,  82,  83,  32, 115, 111, 108,

markodayan

[
  '0x7b', '0x22', '0x6e', '0x61', '0x6d',
  '0x65', '0x22', '0x3a', '0x22', '0x43',
  '0x68', '0x72', '0x69', '0x73', '0x20',
  '0x52', '0x65', '0x64', '0x66', '0x69',
  '0x65', '0x6c', '0x64', '0x22', '0x2c',
  '0x22', '0x61', '0x67', '0x65', '0x22',
  '0x3a', '0x33', '0x30', '0x2c', '0x22',
  '0x6a', '0x6f', '0x62', '0x22', '0x3a',
  '0x22', '0x53', '0x54', '0x41', '0x52',

markodayan

type Input = string | number | bigint | Uint8Array | Array<Input> | null | undefined | any;

function encode(input: Input): Uint8Array {
  /* (1) Non-value input */
  if (input === '' || input === false || input === null) {
    const value = parseInt('0x80', 16);
    return Uint8Array.from([value]);
  }

  /* (2) Empty list input */

markodayan

/* If string supplied is prefixed with '0x' remove it and return the new string */
function stripHexPrefix(input: string): string {
  if (input.startsWith('0x')) {
    input = input.slice(2);
  }

  return input;
}

/* Convert a hexadecimal string to an array of hexadecimal byte values (in preparation of inserting into a byte array) */

markodayan

{
	"difficulty":"0x1b315bd824e5e8",
	"extraData":"0x65746865726d696e652d75732d7765737431",
	"gasLimit":"0xe4e1b2",
	"gasUsed":"0xe4dd4b",
	"hash":"0x14687ccc4adfd2b0f0d530fc8f8c64dd29ac301ddea26e99087e11d0eae4f575",
	"logsBloom":"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",
	"miner":"0xea674fdde714fd979de3edf0f56aa9716b898ec8",
	"mixHash":"0x7ae3558891959354b482938e5a61b1d7e371636e5a718137e16753f595531f6a",
	"nonce":"0xb81e11f2cb22375e",