Bump flat and hardhat in /contracts

[dependabot]

Bumps flat to 5.0.2 and updates ancestor dependency hardhat. These dependencies need to be updated together.

Updates flat from 4.1.1 to 5.0.2

Commits

• e5ffd66 Release 5.0.2
• fdb79d5 Update dependencies, refresh lockfile, format with standard.
• e52185d Test against node 14 in CI.
• 0189cb1 Avoid arrow function syntax.
• f25d3a1 Release 5.0.1
• 54cc7ad use standard formatting
• 779816e drop dependencies
• 2eea6d3 Bump lodash from 4.17.15 to 4.17.19
• a61a554 Bump acorn from 7.1.0 to 7.4.0
• 20ef0ef Fix prototype pollution on unflatten
• Additional commits viewable in compare view

Updates hardhat from 2.6.1 to 2.15.0

Release notes

Sourced from hardhat's releases.

Hardhat v2.15.0

This new version of Hardhat uses the new ethers v6 based Toolbox when initializing a project. Check the release notes of the Toolbox to learn more.

Hardhat v2.14.1

This release adds better information to Hardhat about which block numbers correspond to which hardforks. Most users won't be affected by this, but it fixes some issues for certain edge cases.

Hardhat v2.14.0 — Shanghai

This release sets Shanghai as the default hardfork used by the Hardhat Network.

If for some reason you want to keep using the previous hardfork, set it explicitly in your config:

module.exports = {
  networks: {
    hardhat: {
      hardfork: "merge"
    }
  }
}

Hardhat v2.13.1

This release adds support for the upcoming Shanghai hardfork. This hardfork is not enabled by default; if you want to use it, then you have to enable it in your Hardhat config:

module.exports = {
  networks: {
    hardhat: {
      hardfork: "shanghai"
    }
  }
}

Besides that, this version fixes a problem when importing scoped packages in a Yarn Berry monorepo that uses PnP (thanks @​zouguangxian!)

Hardhat v2.13.0 — ES Modules and compiling with viaIR

This new version of Hardhat adds two long-awaited features: ES Modules support, and better support for solc’s IR-based compilation pipeline. Besides that, this version includes several other improvements and bug fixes.

Remember to give this repo a star ⭐ if you are enjoying Hardhat!

ES Modules support

Hardhat was designed with CommonJS in mind, but in the last years adoption of ES Modules (ESM) has been growing. This version includes better support for it. You can now write scripts and tests as ESM, but your Hardhat config —and anything imported from it— still needs to use CommonJS.

ES modules let you use import/export and top-level await. This means that instead of writing a script like this:

// script.js
const helpers = require("@nomicfoundation/hardhat-network-helpers");
</tr></table> 

... (truncated)

Commits

• 83f23a1 Fix import in esm sample project
• f0aa3c3 Don't bump plugins dependencies on hardhat
• 3a1846e Version Packages
• adc684d Merge branch 'toolbox-ethers-v6'
• 61727ca Merge pull request #3996 from NomicFoundation/issue#3969
• 94b2fd1 Improve changesets descriptions
• b6b8e98 Run prettier
• 1b5e1cf Fix linter in toolbox
• 1409b0a Improve implementation of deployContract overrides
• 9e2554e Add basic tests for deployContract overrides
• Additional commits viewable in compare view

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