Hardhat Extended Tasks

Package name

hardhat-extended-tasks

Introduction

The hardhat-extended-tasks npm package is a plugin for the Hardhat development environment that provides additional features and enhancements to streamline your Ethereum smart contract development process. This plugin expands the capabilities of Hardhat by introducing a new optional parameter for contract compilation, a custom task for exporting contract ABIs, and a task for exporting the Standard JSON input from contracts build-info JSON files.

Features

• Selective Contract Compilation: With the hardhat-extended-tasks plugin, you can instruct Hardhat to compile only the selected contracts, saving time and resources during development and testing.
• Contract ABI Export: This plugin introduces a new task that allows you to export the ABIs (Application Binary Interfaces) of your contracts. You can choose to export all contract ABIs or selectively export specific contract ABIs based on your requirements.
• Contract Standard JSON Input Export: The plugin now includes functionality to export the Standard JSON input from build-info JSON files, which is needed for contract verification on Blockscout or other Block explorer.

Installation

To install the hardhat-extended-tasks plugin, simply run the following command:

npm install --save-dev hardhat-extended-tasks

or

yarn add -D hardhat-extended-tasks

Usage

Once installed, you can enable the hardhat-extended-tasks plugin by adding it to your hardhat.config.js file.

// hardhat.config.js
require('hardhat-extended-tasks');

After enabling the plugin, you can take advantage of the additional features it provides within your Hardhat development environment.

Selective Contract Compilation

The hardhat-extended-tasks plugin introduces a new optional parameter that allows you to specify the contracts you want to compile during the compilation process. This feature helps to optimize the compilation time, especially when working with large codebases.

To compile only selected contracts, use the --only flag followed by a comma-separated list of contract names.

npx hardhat compile --only Contract1,Contract2

Contract ABI Export

The plugin also adds a custom task that enables you to export the ABIs of your contracts. This can be useful when interacting with contracts in external applications or when sharing contract ABIs with other developers.

To export the ABIs of all contracts, run the following command:

npx hardhat export-ABIs

If you only want to export the ABIs of specific contracts, use the --only flag followed by a comma-separated list of contract names.

npx hardhat export-ABIs --only Contract1,Contract2

Using with fully qualified contract name in case of multiple artifacts for the same contract name:

npx hardhat export-ABIs --only contracts/Contract1.sol:Contract1

The task also accepts a JSON file containing a list of contracts to be processed. You can use the --contract-list parameter followed by the path to the JSON file.

npx hardhat export-ABIs --contract-list contractList.json

The contractList.json file should contain an array of contract names, including fully qualified name.

[
  "Contract1",
  "Contract2",
  "contracts/Contract3.sol:Contract3",
  "Contract4",
  "Contract5",
]

Export Standard JSON Input

To export the Standard JSON input from build info JSON files, use the export-json-input command. By default, it will process all build info files in the build-info folder and write the output to the json-inputs folder.

npx hardhat export-json-input

If you only want to process a specific file, you can provide the export-file parameter followed by the path to the file being processed.

npx hardhat export-json-input --export-file ./artifacts/build-info/...fbf5031228457aa...e21578.json

Please note that the build info JSON file should be located in the build-info folder.

License

This plugin is released under the MIT License.