Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.4.26+commit.4563c3fc.js&optimize=false&runs=200&gist=

README.txt

REMIX EXAMPLE PROJECT

Remix example project is present when Remix loads very first time or there are no files existing in the File Explorer. 
It contains 3 directories:

1. 'contracts': Holds three contracts with different complexity level, denoted with number prefix in file name.
2. 'scripts': Holds two scripts to deploy a contract. It is explained below.
3. 'tests': Contains one test file for 'Ballot' contract with unit tests in Solidity.

SCRIPTS

The 'scripts' folder contains example async/await scripts for deploying the 'Storage' contract.
For the deployment of any other contract, 'contractName' and 'constructorArgs' should be updated (along with other code if required). 
Scripts have full access to the web3.js and ethers.js libraries.

To run a script, right click on file name in the file explorer and click 'Run'. Remember, Solidity file must already be compiled.

Output from script will appear in remix terminal.

artifacts...Messenger.json

{
	"deploy": {
		"VM:-": {
			"linkReferences": {},
			"autoDeployLib": true
		},
		"main:1": {
			"linkReferences": {},
			"autoDeployLib": true
		},
		"ropsten:3": {
			"linkReferences": {},
			"autoDeployLib": true
		},
		"rinkeby:4": {
			"linkReferences": {},
			"autoDeployLib": true
		},
		"kovan:42": {
			"linkReferences": {},
			"autoDeployLib": true
		},
		"görli:5": {
			"linkReferences": {},
			"autoDeployLib": true
		},
		"Custom": {
			"linkReferences": {},
			"autoDeployLib": true
		}
	},
	"data": {
		"bytecode": {
			"linkReferences": {},
			"object": "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",
			"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE CALLVALUE DUP1 ISZERO PUSH2 0x10 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP CALLER PUSH1 0x0 DUP1 PUSH2 0x100 EXP DUP2 SLOAD DUP2 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF MUL NOT AND SWAP1 DUP4 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND MUL OR SWAP1 SSTORE POP PUSH2 0x3CC DUP1 PUSH2 0x60 PUSH1 0x0 CODECOPY PUSH1 0x0 RETURN STOP PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH2 0x57 JUMPI PUSH1 0x0 CALLDATALOAD PUSH29 0x100000000000000000000000000000000000000000000000000000000 SWAP1 DIV PUSH4 0xFFFFFFFF AND DUP1 PUSH4 0x6661ABD EQ PUSH2 0x5C JUMPI DUP1 PUSH4 0xAE36853D EQ PUSH2 0x87 JUMPI DUP1 PUSH4 0xB0C8F9DC EQ PUSH2 0x12D JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x68 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x71 PUSH2 0x196 JUMP JUMPDEST PUSH1 0x40 MLOAD DUP1 DUP3 DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x93 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH1 0x4 DUP1 CALLDATASIZE SUB DUP2 ADD SWAP1 DUP1 DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 SWAP3 SWAP2 SWAP1 POP POP POP PUSH2 0x1A3 JUMP JUMPDEST PUSH1 0x40 MLOAD DUP1 DUP1 PUSH1 0x20 ADD DUP3 DUP2 SUB DUP3 MSTORE DUP4 DUP2 DUP2 MLOAD DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP DUP1 MLOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP1 DUP4 DUP4 PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xF2 JUMPI DUP1 DUP3 ADD MLOAD DUP2 DUP5 ADD MSTORE PUSH1 0x20 DUP2 ADD SWAP1 POP PUSH2 0xD7 JUMP JUMPDEST POP POP POP POP SWAP1 POP SWAP1 DUP2 ADD SWAP1 PUSH1 0x1F AND DUP1 ISZERO PUSH2 0x11F JUMPI DUP1 DUP3 SUB DUP1 MLOAD PUSH1 0x1 DUP4 PUSH1 0x20 SUB PUSH2 0x100 EXP SUB NOT AND DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP JUMPDEST POP SWAP3 POP POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x139 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x194 PUSH1 0x4 DUP1 CALLDATASIZE SUB DUP2 ADD SWAP1 DUP1 DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP3 ADD DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP1 DUP1 PUSH1 0x1F ADD PUSH1 0x20 DUP1 SWAP2 DIV MUL PUSH1 0x20 ADD PUSH1 0x40 MLOAD SWAP1 DUP2 ADD PUSH1 0x40 MSTORE DUP1 SWAP4 SWAP3 SWAP2 SWAP1 DUP2 DUP2 MSTORE PUSH1 0x20 ADD DUP4 DUP4 DUP1 DUP3 DUP5 CALLDATACOPY DUP3 ADD SWAP2 POP POP POP POP POP POP SWAP2 SWAP3 SWAP2 SWAP3 SWAP1 POP POP POP PUSH2 0x25E JUMP JUMPDEST STOP JUMPDEST PUSH1 0x0 PUSH1 0x1 DUP1 SLOAD SWAP1 POP SWAP1 POP SWAP1 JUMP JUMPDEST PUSH1 0x60 PUSH1 0x1 DUP3 DUP2 SLOAD DUP2 LT ISZERO ISZERO PUSH2 0x1B4 JUMPI INVALID JUMPDEST SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 ADD DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV DUP1 PUSH1 0x1F ADD PUSH1 0x20 DUP1 SWAP2 DIV MUL PUSH1 0x20 ADD PUSH1 0x40 MLOAD SWAP1 DUP2 ADD PUSH1 0x40 MSTORE DUP1 SWAP3 SWAP2 SWAP1 DUP2 DUP2 MSTORE PUSH1 0x20 ADD DUP3 DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV DUP1 ISZERO PUSH2 0x252 JUMPI DUP1 PUSH1 0x1F LT PUSH2 0x227 JUMPI PUSH2 0x100 DUP1 DUP4 SLOAD DIV MUL DUP4 MSTORE SWAP2 PUSH1 0x20 ADD SWAP2 PUSH2 0x252 JUMP JUMPDEST DUP3 ADD SWAP2 SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 SWAP1 JUMPDEST DUP2 SLOAD DUP2 MSTORE SWAP1 PUSH1 0x1 ADD SWAP1 PUSH1 0x20 ADD DUP1 DUP4 GT PUSH2 0x235 JUMPI DUP3 SWAP1 SUB PUSH1 0x1F AND DUP3 ADD SWAP2 JUMPDEST POP POP POP POP POP SWAP1 POP SWAP2 SWAP1 POP JUMP JUMPDEST PUSH1 0x0 DUP1 SWAP1 SLOAD SWAP1 PUSH2 0x100 EXP SWAP1 DIV PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND CALLER PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND EQ ISZERO ISZERO PUSH2 0x2B9 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST PUSH1 0x1 DUP2 SWAP1 DUP1 PUSH1 0x1 DUP2 SLOAD ADD DUP1 DUP3 SSTORE DUP1 SWAP2 POP POP SWAP1 PUSH1 0x1 DUP3 SUB SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 ADD PUSH1 0x0 SWAP1 SWAP2 SWAP3 SWAP1 SWAP2 SWAP1 SWAP2 POP SWAP1 DUP1 MLOAD SWAP1 PUSH1 0x20 ADD SWAP1 PUSH2 0x2F6 SWAP3 SWAP2 SWAP1 PUSH2 0x2FB JUMP JUMPDEST POP POP POP JUMP JUMPDEST DUP3 DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 SWAP1 PUSH1 0x1F ADD PUSH1 0x20 SWAP1 DIV DUP2 ADD SWAP3 DUP3 PUSH1 0x1F LT PUSH2 0x33C JUMPI DUP1 MLOAD PUSH1 0xFF NOT AND DUP4 DUP1 ADD OR DUP6 SSTORE PUSH2 0x36A JUMP JUMPDEST DUP3 DUP1 ADD PUSH1 0x1 ADD DUP6 SSTORE DUP3 ISZERO PUSH2 0x36A JUMPI SWAP2 DUP3 ADD JUMPDEST DUP3 DUP2 GT ISZERO PUSH2 0x369 JUMPI DUP3 MLOAD DUP3 SSTORE SWAP2 PUSH1 0x20 ADD SWAP2 SWAP1 PUSH1 0x1 ADD SWAP1 PUSH2 0x34E JUMP JUMPDEST JUMPDEST POP SWAP1 POP PUSH2 0x377 SWAP2 SWAP1 PUSH2 0x37B JUMP JUMPDEST POP SWAP1 JUMP JUMPDEST PUSH2 0x39D SWAP2 SWAP1 JUMPDEST DUP1 DUP3 GT ISZERO PUSH2 0x399 JUMPI PUSH1 0x0 DUP2 PUSH1 0x0 SWAP1 SSTORE POP PUSH1 0x1 ADD PUSH2 0x381 JUMP JUMPDEST POP SWAP1 JUMP JUMPDEST SWAP1 JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0xc4 DELEGATECALL 0xa7 DUP1 ORIGIN 0xe6 CALLCODE 0x1f 0xd0 0xab PUSH13 0xD8E926CD5E5A86937A62A93CD5 CODESIZE 0x21 0xd3 SWAP15 DIFFICULTY 0xf9 0xc3 PUSH3 0x2900 ",
			"sourceMap": "26:462:0:-;;;98:56;8:9:-1;5:2;;;30:1;27;20:12;5:2;98:56:0;137:10;129:5;;:18;;;;;;;;;;;;;;;;;;26:462;;;;;;"
		},
		"deployedBytecode": {
			"linkReferences": {},
			"object": "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",
			"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH2 0x57 JUMPI PUSH1 0x0 CALLDATALOAD PUSH29 0x100000000000000000000000000000000000000000000000000000000 SWAP1 DIV PUSH4 0xFFFFFFFF AND DUP1 PUSH4 0x6661ABD EQ PUSH2 0x5C JUMPI DUP1 PUSH4 0xAE36853D EQ PUSH2 0x87 JUMPI DUP1 PUSH4 0xB0C8F9DC EQ PUSH2 0x12D JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x68 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x71 PUSH2 0x196 JUMP JUMPDEST PUSH1 0x40 MLOAD DUP1 DUP3 DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x93 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH1 0x4 DUP1 CALLDATASIZE SUB DUP2 ADD SWAP1 DUP1 DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 SWAP3 SWAP2 SWAP1 POP POP POP PUSH2 0x1A3 JUMP JUMPDEST PUSH1 0x40 MLOAD DUP1 DUP1 PUSH1 0x20 ADD DUP3 DUP2 SUB DUP3 MSTORE DUP4 DUP2 DUP2 MLOAD DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP DUP1 MLOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP1 DUP4 DUP4 PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xF2 JUMPI DUP1 DUP3 ADD MLOAD DUP2 DUP5 ADD MSTORE PUSH1 0x20 DUP2 ADD SWAP1 POP PUSH2 0xD7 JUMP JUMPDEST POP POP POP POP SWAP1 POP SWAP1 DUP2 ADD SWAP1 PUSH1 0x1F AND DUP1 ISZERO PUSH2 0x11F JUMPI DUP1 DUP3 SUB DUP1 MLOAD PUSH1 0x1 DUP4 PUSH1 0x20 SUB PUSH2 0x100 EXP SUB NOT AND DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP JUMPDEST POP SWAP3 POP POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x139 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x194 PUSH1 0x4 DUP1 CALLDATASIZE SUB DUP2 ADD SWAP1 DUP1 DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP3 ADD DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP1 DUP1 PUSH1 0x1F ADD PUSH1 0x20 DUP1 SWAP2 DIV MUL PUSH1 0x20 ADD PUSH1 0x40 MLOAD SWAP1 DUP2 ADD PUSH1 0x40 MSTORE DUP1 SWAP4 SWAP3 SWAP2 SWAP1 DUP2 DUP2 MSTORE PUSH1 0x20 ADD DUP4 DUP4 DUP1 DUP3 DUP5 CALLDATACOPY DUP3 ADD SWAP2 POP POP POP POP POP POP SWAP2 SWAP3 SWAP2 SWAP3 SWAP1 POP POP POP PUSH2 0x25E JUMP JUMPDEST STOP JUMPDEST PUSH1 0x0 PUSH1 0x1 DUP1 SLOAD SWAP1 POP SWAP1 POP SWAP1 JUMP JUMPDEST PUSH1 0x60 PUSH1 0x1 DUP3 DUP2 SLOAD DUP2 LT ISZERO ISZERO PUSH2 0x1B4 JUMPI INVALID JUMPDEST SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 ADD DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV DUP1 PUSH1 0x1F ADD PUSH1 0x20 DUP1 SWAP2 DIV MUL PUSH1 0x20 ADD PUSH1 0x40 MLOAD SWAP1 DUP2 ADD PUSH1 0x40 MSTORE DUP1 SWAP3 SWAP2 SWAP1 DUP2 DUP2 MSTORE PUSH1 0x20 ADD DUP3 DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV DUP1 ISZERO PUSH2 0x252 JUMPI DUP1 PUSH1 0x1F LT PUSH2 0x227 JUMPI PUSH2 0x100 DUP1 DUP4 SLOAD DIV MUL DUP4 MSTORE SWAP2 PUSH1 0x20 ADD SWAP2 PUSH2 0x252 JUMP JUMPDEST DUP3 ADD SWAP2 SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 SWAP1 JUMPDEST DUP2 SLOAD DUP2 MSTORE SWAP1 PUSH1 0x1 ADD SWAP1 PUSH1 0x20 ADD DUP1 DUP4 GT PUSH2 0x235 JUMPI DUP3 SWAP1 SUB PUSH1 0x1F AND DUP3 ADD SWAP2 JUMPDEST POP POP POP POP POP SWAP1 POP SWAP2 SWAP1 POP JUMP JUMPDEST PUSH1 0x0 DUP1 SWAP1 SLOAD SWAP1 PUSH2 0x100 EXP SWAP1 DIV PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND CALLER PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND EQ ISZERO ISZERO PUSH2 0x2B9 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST PUSH1 0x1 DUP2 SWAP1 DUP1 PUSH1 0x1 DUP2 SLOAD ADD DUP1 DUP3 SSTORE DUP1 SWAP2 POP POP SWAP1 PUSH1 0x1 DUP3 SUB SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 ADD PUSH1 0x0 SWAP1 SWAP2 SWAP3 SWAP1 SWAP2 SWAP1 SWAP2 POP SWAP1 DUP1 MLOAD SWAP1 PUSH1 0x20 ADD SWAP1 PUSH2 0x2F6 SWAP3 SWAP2 SWAP1 PUSH2 0x2FB JUMP JUMPDEST POP POP POP JUMP JUMPDEST DUP3 DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 SWAP1 PUSH1 0x1F ADD PUSH1 0x20 SWAP1 DIV DUP2 ADD SWAP3 DUP3 PUSH1 0x1F LT PUSH2 0x33C JUMPI DUP1 MLOAD PUSH1 0xFF NOT AND DUP4 DUP1 ADD OR DUP6 SSTORE PUSH2 0x36A JUMP JUMPDEST DUP3 DUP1 ADD PUSH1 0x1 ADD DUP6 SSTORE DUP3 ISZERO PUSH2 0x36A JUMPI SWAP2 DUP3 ADD JUMPDEST DUP3 DUP2 GT ISZERO PUSH2 0x369 JUMPI DUP3 MLOAD DUP3 SSTORE SWAP2 PUSH1 0x20 ADD SWAP2 SWAP1 PUSH1 0x1 ADD SWAP1 PUSH2 0x34E JUMP JUMPDEST JUMPDEST POP SWAP1 POP PUSH2 0x377 SWAP2 SWAP1 PUSH2 0x37B JUMP JUMPDEST POP SWAP1 JUMP JUMPDEST PUSH2 0x39D SWAP2 SWAP1 JUMPDEST DUP1 DUP3 GT ISZERO PUSH2 0x399 JUMPI PUSH1 0x0 DUP2 PUSH1 0x0 SWAP1 SSTORE POP PUSH1 0x1 ADD PUSH2 0x381 JUMP JUMPDEST POP SWAP1 JUMP JUMPDEST SWAP1 JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0xc4 DELEGATECALL 0xa7 DUP1 ORIGIN 0xe6 CALLCODE 0x1f 0xd0 0xab PUSH13 0xD8E926CD5E5A86937A62A93CD5 CODESIZE 0x21 0xd3 SWAP15 DIFFICULTY 0xf9 0xc3 PUSH3 0x2900 ",
			"sourceMap": "26:462:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;293:82;;8:9:-1;5:2;;;30:1;27;20:12;5:2;293:82:0;;;;;;;;;;;;;;;;;;;;;;;385:101;;8:9:-1;5:2;;;30:1;27;20:12;5:2;385:101:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;385:101:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;164:119;;8:9:-1;5:2;;;30:1;27;20:12;5:2;164:119:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;293:82;331:4;353:8;:15;;;;346:22;;293:82;:::o;385:101::-;439:6;464:8;473:5;464:15;;;;;;;;;;;;;;;;;457:22;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;385:101;;;:::o;164:119::-;235:5;;;;;;;;;;;221:19;;:10;:19;;;213:28;;;;;;;;251:8;265:10;251:25;;39:1:-1;33:3;27:10;23:18;57:10;52:3;45:23;79:10;72:17;;0:93;251:25:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;164:119;:::o;26:462::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;:::o;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o"
		},
		"gasEstimates": {
			"creation": {
				"codeDepositCost": "194400",
				"executionCost": "20504",
				"totalCost": "214904"
			},
			"external": {
				"add(string)": "infinite",
				"count()": "410",
				"getMessages(uint256)": "infinite"
			}
		},
		"methodIdentifiers": {
			"add(string)": "b0c8f9dc",
			"count()": "06661abd",
			"getMessages(uint256)": "ae36853d"
		}
	},
	"abi": [
		{
			"constant": true,
			"inputs": [],
			"name": "count",
			"outputs": [
				{
					"name": "",
					"type": "uint256"
				}
			],
			"payable": false,
			"stateMutability": "view",
			"type": "function"
		},
		{
			"constant": true,
			"inputs": [
				{
					"name": "index",
					"type": "uint256"
				}
			],
			"name": "getMessages",
			"outputs": [
				{
					"name": "",
					"type": "string"
				}
			],
			"payable": false,
			"stateMutability": "view",
			"type": "function"
		},
		{
			"constant": false,
			"inputs": [
				{
					"name": "newMessage",
					"type": "string"
				}
			],
			"name": "add",
			"outputs": [],
			"payable": false,
			"stateMutability": "nonpayable",
			"type": "function"
		},
		{
			"inputs": [],
			"payable": false,
			"stateMutability": "nonpayable",
			"type": "constructor"
		}
	]
}

artifacts...Messenger_metadata.json

{
	"compiler": {
		"version": "0.4.26+commit.4563c3fc"
	},
	"language": "Solidity",
	"output": {
		"abi": [
			{
				"constant": true,
				"inputs": [],
				"name": "count",
				"outputs": [
					{
						"name": "",
						"type": "uint256"
					}
				],
				"payable": false,
				"stateMutability": "view",
				"type": "function"
			},
			{
				"constant": true,
				"inputs": [
					{
						"name": "index",
						"type": "uint256"
					}
				],
				"name": "getMessages",
				"outputs": [
					{
						"name": "",
						"type": "string"
					}
				],
				"payable": false,
				"stateMutability": "view",
				"type": "function"
			},
			{
				"constant": false,
				"inputs": [
					{
						"name": "newMessage",
						"type": "string"
					}
				],
				"name": "add",
				"outputs": [],
				"payable": false,
				"stateMutability": "nonpayable",
				"type": "function"
			},
			{
				"inputs": [],
				"payable": false,
				"stateMutability": "nonpayable",
				"type": "constructor"
			}
		],
		"devdoc": {
			"methods": {}
		},
		"userdoc": {
			"methods": {}
		}
	},
	"settings": {
		"compilationTarget": {
			"Messenger.sol": "Messenger"
		},
		"evmVersion": "byzantium",
		"libraries": {},
		"optimizer": {
			"enabled": false,
			"runs": 200
		},
		"remappings": []
	},
	"sources": {
		"Messenger.sol": {
			"keccak256": "0x655cc9c39011dca8ffb8cfb06da4f03e2e804436c4efc87855bc546a055f347b",
			"urls": [
				"bzzr://12200a82c04bbb74755e4b902cceccebe1bcd65939dd7a8e16645c77b3c6ff1a"
			]
		}
	},
	"version": 1
}

contracts...1_Storage.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

/**
 * @title Storage
 * @dev Store & retrieve value in a variable
 */
contract Storage {

    uint256 number;

    /**
     * @dev Store value in variable
     * @param num value to store
     */
    function store(uint256 num) public {
        number = num;
    }

    /**
     * @dev Return value 
     * @return value of 'number'
     */
    function retrieve() public view returns (uint256){
        return number;
    }
}

contracts...2_Owner.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

/**
 * @title Owner
 * @dev Set & change owner
 */
contract Owner {

    address private owner;
    
    // event for EVM logging
    event OwnerSet(address indexed oldOwner, address indexed newOwner);
    
    // modifier to check if caller is owner
    modifier isOwner() {
        // If the first argument of 'require' evaluates to 'false', execution terminates and all
        // changes to the state and to Ether balances are reverted.
        // This used to consume all gas in old EVM versions, but not anymore.
        // It is often a good idea to use 'require' to check if functions are called correctly.
        // As a second argument, you can also provide an explanation about what went wrong.
        require(msg.sender == owner, "Caller is not owner");
        _;
    }
    
    /**
     * @dev Set contract deployer as owner
     */
    constructor() {
        owner = msg.sender; // 'msg.sender' is sender of current call, contract deployer for a constructor
        emit OwnerSet(address(0), owner);
    }

    /**
     * @dev Change owner
     * @param newOwner address of new owner
     */
    function changeOwner(address newOwner) public isOwner {
        emit OwnerSet(owner, newOwner);
        owner = newOwner;
    }

    /**
     * @dev Return owner address 
     * @return address of owner
     */
    function getOwner() external view returns (address) {
        return owner;
    }
}

contracts...3_Ballot.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

/** 
 * @title Ballot
 * @dev Implements voting process along with vote delegation
 */
contract Ballot {
   
    struct Voter {
        uint weight; // weight is accumulated by delegation
        bool voted;  // if true, that person already voted
        address delegate; // person delegated to
        uint vote;   // index of the voted proposal
    }

    struct Proposal {
        // If you can limit the length to a certain number of bytes, 
        // always use one of bytes1 to bytes32 because they are much cheaper
        bytes32 name;   // short name (up to 32 bytes)
        uint voteCount; // number of accumulated votes
    }

    address public chairperson;

    mapping(address => Voter) public voters;

    Proposal[] public proposals;

    /** 
     * @dev Create a new ballot to choose one of 'proposalNames'.
     * @param proposalNames names of proposals
     */
    constructor(bytes32[] memory proposalNames) {
        chairperson = msg.sender;
        voters[chairperson].weight = 1;

        for (uint i = 0; i < proposalNames.length; i++) {
            // 'Proposal({...})' creates a temporary
            // Proposal object and 'proposals.push(...)'
            // appends it to the end of 'proposals'.
            proposals.push(Proposal({
                name: proposalNames[i],
                voteCount: 0
            }));
        }
    }
    
    /** 
     * @dev Give 'voter' the right to vote on this ballot. May only be called by 'chairperson'.
     * @param voter address of voter
     */
    function giveRightToVote(address voter) public {
        require(
            msg.sender == chairperson,
            "Only chairperson can give right to vote."
        );
        require(
            !voters[voter].voted,
            "The voter already voted."
        );
        require(voters[voter].weight == 0);
        voters[voter].weight = 1;
    }

    /**
     * @dev Delegate your vote to the voter 'to'.
     * @param to address to which vote is delegated
     */
    function delegate(address to) public {
        Voter storage sender = voters[msg.sender];
        require(!sender.voted, "You already voted.");
        require(to != msg.sender, "Self-delegation is disallowed.");

        while (voters[to].delegate != address(0)) {
            to = voters[to].delegate;

            // We found a loop in the delegation, not allowed.
            require(to != msg.sender, "Found loop in delegation.");
        }
        sender.voted = true;
        sender.delegate = to;
        Voter storage delegate_ = voters[to];
        if (delegate_.voted) {
            // If the delegate already voted,
            // directly add to the number of votes
            proposals[delegate_.vote].voteCount += sender.weight;
        } else {
            // If the delegate did not vote yet,
            // add to her weight.
            delegate_.weight += sender.weight;
        }
    }

    /**
     * @dev Give your vote (including votes delegated to you) to proposal 'proposals[proposal].name'.
     * @param proposal index of proposal in the proposals array
     */
    function vote(uint proposal) public {
        Voter storage sender = voters[msg.sender];
        require(sender.weight != 0, "Has no right to vote");
        require(!sender.voted, "Already voted.");
        sender.voted = true;
        sender.vote = proposal;

        // If 'proposal' is out of the range of the array,
        // this will throw automatically and revert all
        // changes.
        proposals[proposal].voteCount += sender.weight;
    }

    /** 
     * @dev Computes the winning proposal taking all previous votes into account.
     * @return winningProposal_ index of winning proposal in the proposals array
     */
    function winningProposal() public view
            returns (uint winningProposal_)
    {
        uint winningVoteCount = 0;
        for (uint p = 0; p < proposals.length; p++) {
            if (proposals[p].voteCount > winningVoteCount) {
                winningVoteCount = proposals[p].voteCount;
                winningProposal_ = p;
            }
        }
    }

    /** 
     * @dev Calls winningProposal() function to get the index of the winner contained in the proposals array and then
     * @return winnerName_ the name of the winner
     */
    function winnerName() public view
            returns (bytes32 winnerName_)
    {
        winnerName_ = proposals[winningProposal()].name;
    }
}

contracts...4_Messenger.sol

pragma solidity ^0.4.24;

contract Messenger {
    address owner;
    string[] messages;
    
    constructor() public {
        owner = msg.sender;
    }
    
    function add(string newMessage) public {
        require(msg.sender == owner);
        messages.push(newMessage);
    }
    
    function count() view public returns(uint) {
        return messages.length;
    }
    
    function getMessages(uint index) view public returns(string){
        return messages[index];
    }
}

contracts...artifacts...Messenger.json

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			"linkReferences": {},
			"autoDeployLib": true
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		"ropsten:3": {
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		"rinkeby:4": {
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		"kovan:42": {
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		"görli:5": {
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		"Custom": {
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			"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH2 0x57 JUMPI PUSH1 0x0 CALLDATALOAD PUSH29 0x100000000000000000000000000000000000000000000000000000000 SWAP1 DIV PUSH4 0xFFFFFFFF AND DUP1 PUSH4 0x6661ABD EQ PUSH2 0x5C JUMPI DUP1 PUSH4 0xAE36853D EQ PUSH2 0x87 JUMPI DUP1 PUSH4 0xB0C8F9DC EQ PUSH2 0x12D JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x68 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x71 PUSH2 0x196 JUMP JUMPDEST PUSH1 0x40 MLOAD DUP1 DUP3 DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x93 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH1 0x4 DUP1 CALLDATASIZE SUB DUP2 ADD SWAP1 DUP1 DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 SWAP3 SWAP2 SWAP1 POP POP POP PUSH2 0x1A3 JUMP JUMPDEST PUSH1 0x40 MLOAD DUP1 DUP1 PUSH1 0x20 ADD DUP3 DUP2 SUB DUP3 MSTORE DUP4 DUP2 DUP2 MLOAD DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP DUP1 MLOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP1 DUP4 DUP4 PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xF2 JUMPI DUP1 DUP3 ADD MLOAD DUP2 DUP5 ADD MSTORE PUSH1 0x20 DUP2 ADD SWAP1 POP PUSH2 0xD7 JUMP JUMPDEST POP POP POP POP SWAP1 POP SWAP1 DUP2 ADD SWAP1 PUSH1 0x1F AND DUP1 ISZERO PUSH2 0x11F JUMPI DUP1 DUP3 SUB DUP1 MLOAD PUSH1 0x1 DUP4 PUSH1 0x20 SUB PUSH2 0x100 EXP SUB NOT AND DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP JUMPDEST POP SWAP3 POP POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x139 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x194 PUSH1 0x4 DUP1 CALLDATASIZE SUB DUP2 ADD SWAP1 DUP1 DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP3 ADD DUP1 CALLDATALOAD SWAP1 PUSH1 0x20 ADD SWAP1 DUP1 DUP1 PUSH1 0x1F ADD PUSH1 0x20 DUP1 SWAP2 DIV MUL PUSH1 0x20 ADD PUSH1 0x40 MLOAD SWAP1 DUP2 ADD PUSH1 0x40 MSTORE DUP1 SWAP4 SWAP3 SWAP2 SWAP1 DUP2 DUP2 MSTORE PUSH1 0x20 ADD DUP4 DUP4 DUP1 DUP3 DUP5 CALLDATACOPY DUP3 ADD SWAP2 POP POP POP POP POP POP SWAP2 SWAP3 SWAP2 SWAP3 SWAP1 POP POP POP PUSH2 0x25E JUMP JUMPDEST STOP JUMPDEST PUSH1 0x0 PUSH1 0x1 DUP1 SLOAD SWAP1 POP SWAP1 POP SWAP1 JUMP JUMPDEST PUSH1 0x60 PUSH1 0x1 DUP3 DUP2 SLOAD DUP2 LT ISZERO ISZERO PUSH2 0x1B4 JUMPI INVALID JUMPDEST SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 ADD DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV DUP1 PUSH1 0x1F ADD PUSH1 0x20 DUP1 SWAP2 DIV MUL PUSH1 0x20 ADD PUSH1 0x40 MLOAD SWAP1 DUP2 ADD PUSH1 0x40 MSTORE DUP1 SWAP3 SWAP2 SWAP1 DUP2 DUP2 MSTORE PUSH1 0x20 ADD DUP3 DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV DUP1 ISZERO PUSH2 0x252 JUMPI DUP1 PUSH1 0x1F LT PUSH2 0x227 JUMPI PUSH2 0x100 DUP1 DUP4 SLOAD DIV MUL DUP4 MSTORE SWAP2 PUSH1 0x20 ADD SWAP2 PUSH2 0x252 JUMP JUMPDEST DUP3 ADD SWAP2 SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 SWAP1 JUMPDEST DUP2 SLOAD DUP2 MSTORE SWAP1 PUSH1 0x1 ADD SWAP1 PUSH1 0x20 ADD DUP1 DUP4 GT PUSH2 0x235 JUMPI DUP3 SWAP1 SUB PUSH1 0x1F AND DUP3 ADD SWAP2 JUMPDEST POP POP POP POP POP SWAP1 POP SWAP2 SWAP1 POP JUMP JUMPDEST PUSH1 0x0 DUP1 SWAP1 SLOAD SWAP1 PUSH2 0x100 EXP SWAP1 DIV PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND CALLER PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND EQ ISZERO ISZERO PUSH2 0x2B9 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST PUSH1 0x1 DUP2 SWAP1 DUP1 PUSH1 0x1 DUP2 SLOAD ADD DUP1 DUP3 SSTORE DUP1 SWAP2 POP POP SWAP1 PUSH1 0x1 DUP3 SUB SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 ADD PUSH1 0x0 SWAP1 SWAP2 SWAP3 SWAP1 SWAP2 SWAP1 SWAP2 POP SWAP1 DUP1 MLOAD SWAP1 PUSH1 0x20 ADD SWAP1 PUSH2 0x2F6 SWAP3 SWAP2 SWAP1 PUSH2 0x2FB JUMP JUMPDEST POP POP POP JUMP JUMPDEST DUP3 DUP1 SLOAD PUSH1 0x1 DUP2 PUSH1 0x1 AND ISZERO PUSH2 0x100 MUL SUB AND PUSH1 0x2 SWAP1 DIV SWAP1 PUSH1 0x0 MSTORE PUSH1 0x20 PUSH1 0x0 KECCAK256 SWAP1 PUSH1 0x1F ADD PUSH1 0x20 SWAP1 DIV DUP2 ADD SWAP3 DUP3 PUSH1 0x1F LT PUSH2 0x33C JUMPI DUP1 MLOAD PUSH1 0xFF NOT AND DUP4 DUP1 ADD OR DUP6 SSTORE PUSH2 0x36A JUMP JUMPDEST DUP3 DUP1 ADD PUSH1 0x1 ADD DUP6 SSTORE DUP3 ISZERO PUSH2 0x36A JUMPI SWAP2 DUP3 ADD JUMPDEST DUP3 DUP2 GT ISZERO PUSH2 0x369 JUMPI DUP3 MLOAD DUP3 SSTORE SWAP2 PUSH1 0x20 ADD SWAP2 SWAP1 PUSH1 0x1 ADD SWAP1 PUSH2 0x34E JUMP JUMPDEST JUMPDEST POP SWAP1 POP PUSH2 0x377 SWAP2 SWAP1 PUSH2 0x37B JUMP JUMPDEST POP SWAP1 JUMP JUMPDEST PUSH2 0x39D SWAP2 SWAP1 JUMPDEST DUP1 DUP3 GT ISZERO PUSH2 0x399 JUMPI PUSH1 0x0 DUP2 PUSH1 0x0 SWAP1 SSTORE POP PUSH1 0x1 ADD PUSH2 0x381 JUMP JUMPDEST POP SWAP1 JUMP JUMPDEST SWAP1 JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 XOR 0xcf JUMPDEST PUSH25 0x3D6720A432D339332E3EA1C80A15A16A0A702CCFBAF7F63405 0x24 ADD DUP1 STOP 0x29 ",
			"sourceMap": "26:460:0:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;293:82;;8:9:-1;5:2;;;30:1;27;20:12;5:2;293:82:0;;;;;;;;;;;;;;;;;;;;;;;385:99;;8:9:-1;5:2;;;30:1;27;20:12;5:2;385:99:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;52:2;49:1;45:10;40:15;;8:100;;;12:14;385:99:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;164:119;;8:9:-1;5:2;;;30:1;27;20:12;5:2;164:119:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;293:82;330:4;353:8;:15;;;;346:22;;293:82;:::o;385:99::-;438:6;462:8;471:5;462:15;;;;;;;;;;;;;;;;;455:22;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;385:99;;;:::o;164:119::-;235:5;;;;;;;;;;;221:19;;:10;:19;;;213:28;;;;;;;;251:8;265:10;251:25;;39:1:-1;33:3;27:10;23:18;57:10;52:3;45:23;79:10;72:17;;0:93;251:25:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;164:119;:::o;26:460::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;:::i;:::-;;;:::o;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;:::o"
		},
		"gasEstimates": {
			"creation": {
				"codeDepositCost": "194400",
				"executionCost": "20504",
				"totalCost": "214904"
			},
			"external": {
				"add(string)": "infinite",
				"count()": "410",
				"getMessages(uint256)": "infinite"
			}
		},
		"methodIdentifiers": {
			"add(string)": "b0c8f9dc",
			"count()": "06661abd",
			"getMessages(uint256)": "ae36853d"
		}
	},
	"abi": [
		{
			"constant": true,
			"inputs": [],
			"name": "count",
			"outputs": [
				{
					"name": "",
					"type": "uint256"
				}
			],
			"payable": false,
			"stateMutability": "view",
			"type": "function"
		},
		{
			"constant": true,
			"inputs": [
				{
					"name": "index",
					"type": "uint256"
				}
			],
			"name": "getMessages",
			"outputs": [
				{
					"name": "",
					"type": "string"
				}
			],
			"payable": false,
			"stateMutability": "view",
			"type": "function"
		},
		{
			"constant": false,
			"inputs": [
				{
					"name": "newMessage",
					"type": "string"
				}
			],
			"name": "add",
			"outputs": [],
			"payable": false,
			"stateMutability": "nonpayable",
			"type": "function"
		},
		{
			"inputs": [],
			"payable": false,
			"stateMutability": "nonpayable",
			"type": "constructor"
		}
	]
}

contracts...artifacts...Messenger_metadata.json

{
	"compiler": {
		"version": "0.4.26+commit.4563c3fc"
	},
	"language": "Solidity",
	"output": {
		"abi": [
			{
				"constant": true,
				"inputs": [],
				"name": "count",
				"outputs": [
					{
						"name": "",
						"type": "uint256"
					}
				],
				"payable": false,
				"stateMutability": "view",
				"type": "function"
			},
			{
				"constant": true,
				"inputs": [
					{
						"name": "index",
						"type": "uint256"
					}
				],
				"name": "getMessages",
				"outputs": [
					{
						"name": "",
						"type": "string"
					}
				],
				"payable": false,
				"stateMutability": "view",
				"type": "function"
			},
			{
				"constant": false,
				"inputs": [
					{
						"name": "newMessage",
						"type": "string"
					}
				],
				"name": "add",
				"outputs": [],
				"payable": false,
				"stateMutability": "nonpayable",
				"type": "function"
			},
			{
				"inputs": [],
				"payable": false,
				"stateMutability": "nonpayable",
				"type": "constructor"
			}
		],
		"devdoc": {
			"methods": {}
		},
		"userdoc": {
			"methods": {}
		}
	},
	"settings": {
		"compilationTarget": {
			"contracts/4_Messenger.sol": "Messenger"
		},
		"evmVersion": "byzantium",
		"libraries": {},
		"optimizer": {
			"enabled": false,
			"runs": 200
		},
		"remappings": []
	},
	"sources": {
		"contracts/4_Messenger.sol": {
			"keccak256": "0x85a9a5a866e45d1aa369719100ec2fc744b553a1a962c15d7333dfc9ea704e47",
			"urls": [
				"bzzr://804246a9853788da3045d489cf28ef35d0c1f6bf22c4366bf65adbb0e3e07de1"
			]
		}
	},
	"version": 1
}

Messenger.sol

pragma solidity ^0.4.24;

contract Messenger {
    address owner;
    string[] messages;
    
    constructor() public {
        owner = msg.sender;
    }
    
    function add(string newMessage) public {
        require(msg.sender == owner);
        messages.push(newMessage);
    }
    
    function count() view public returns (uint){
        return messages.length;
    }
    
    function getMessages(uint index) view public returns (string) {
        return messages[index];
    }
}

scripts...deploy_ethers.js

// Right click on the script name and hit "Run" to execute
(async () => {
    try {
        console.log('Running deployWithEthers script...')
    
        const contractName = 'Storage' // Change this for other contract
        const constructorArgs = []    // Put constructor args (if any) here for your contract

        // Note that the script needs the ABI which is generated from the compilation artifact.
        // Make sure contract is compiled and artifacts are generated
        const artifactsPath = `browser/contracts/artifacts/${contractName}.json` // Change this for different path
    
        const metadata = JSON.parse(await remix.call('fileManager', 'getFile', artifactsPath))
        // 'web3Provider' is a remix global variable object
        const signer = (new ethers.providers.Web3Provider(web3Provider)).getSigner()
    
        let factory = new ethers.ContractFactory(metadata.abi, metadata.data.bytecode.object, signer);
    
        let contract = await factory.deploy(...constructorArgs);
    
        console.log('Contract Address: ', contract.address);
    
        // The contract is NOT deployed yet; we must wait until it is mined
        await contract.deployed()
        console.log('Deployment successful.')
    } catch (e) {
        console.log(e.message)
    }
})()

scripts...deploy_web3.js

// Right click on the script name and hit "Run" to execute
(async () => {
    try {
        console.log('Running deployWithWeb3 script...')
        
        const contractName = 'Storage' // Change this for other contract
        const constructorArgs = []    // Put constructor args (if any) here for your contract
    
        // Note that the script needs the ABI which is generated from the compilation artifact.
        // Make sure contract is compiled and artifacts are generated
        const artifactsPath = `browser/contracts/artifacts/${contractName}.json` // Change this for different path

        const metadata = JSON.parse(await remix.call('fileManager', 'getFile', artifactsPath))
        const accounts = await web3.eth.getAccounts()
    
        let contract = new web3.eth.Contract(metadata.abi)
    
        contract = contract.deploy({
            data: metadata.data.bytecode.object,
            arguments: constructorArgs
        })
    
        const newContractInstance = await contract.send({
            from: accounts[0],
            gas: 1500000,
            gasPrice: '30000000000'
        })
        console.log('Contract deployed at address: ', newContractInstance.options.address)
    } catch (e) {
        console.log(e.message)
    }
  })()

tests...4_Ballot_test.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;
import "remix_tests.sol"; // this import is automatically injected by Remix.
import "../contracts/3_Ballot.sol";

contract BallotTest {
   
    bytes32[] proposalNames;
   
    Ballot ballotToTest;
    function beforeAll () public {
        proposalNames.push(bytes32("candidate1"));
        ballotToTest = new Ballot(proposalNames);
    }
    
    function checkWinningProposal () public {
        ballotToTest.vote(0);
        Assert.equal(ballotToTest.winningProposal(), uint(0), "proposal at index 0 should be the winning proposal");
        Assert.equal(ballotToTest.winnerName(), bytes32("candidate1"), "candidate1 should be the winner name");
    }
    
    function checkWinninProposalWithReturnValue () public view returns (bool) {
        return ballotToTest.winningProposal() == 0;
    }
}