Is it possible to include all the openzeppelin library files on Remix?

Question

I am trying out Remix as an IDE. However, I'm using the excellent open-zeppelin library for development. Is there any way to include all the files from open-zeppelin in the build path for Remix without pasting them all in there?

I have tried importing a local directory, but since my normal build tool is Truffle, the Remix compiler doesn't pick up the node_modules directory. I tried copying the open-zeppelin directory into the contracts directory, but still my imports won't work. They work if I prefix my paths "./", but I'd rather not do that, since I would have to do it in every single open-zeppelin file.

Answer 1

The easiest is to use remixd to share your build directory with remix. Here are indication how to configure it Accessing a shared folder in Remix IDE using Remixd.

Another option is to use the remix feature that allows importing directly from github, so you do not need the openzeppelin files.

pragma solidity ^0.4.15;

import "github.com/OpenZeppelin/zeppelin-solidity/contracts/ownership/Ownable.sol";

contract BasicToken is Ownable {
    function () public payable {
    }

    function withdraw(uint amount) public {
        if (amount <= this.balance) {
            msg.sender.transfer(amount);
        }
    }
}

Answer 2

Have you tried Patricio Palladino's truffle-flattener?

Truffle Flattener concats solidity files developed under Truffle with all of their dependencies.

This tool helps you to verify contracts developed with Truffle on Etherscan, or debugging them on Remix, by merging your files and their dependencies in the right order.

Answer 3

Yes it's possible just use:

pragma solidity ^0.4.24;

import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/ownership/Ownable.sol";

contract SimpleContract is Ownable {

}

The package zeppelin-solidity mentioned above is deprecated

Answer 4

you can import with github.

https://remix-ide.readthedocs.io/en/latest/import.html

ie:

pragma solidity ^0.7.0;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0-solc-0.7/contracts/token/ERC20/ERC20.sol";

contract Token is ERC20 {

    constructor () ERC20("Token", "TKN") {
        _mint(msg.sender, 1000000 * (10 ** uint256(decimals())));
    }
}