Update dependency hardhat to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
hardhat (source)	^2.8.0 → ^3.0.0

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Release Notes

NomicFoundation/hardhat (hardhat)

v3.1.2

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Patch Changes

• 3575a52: Bumped EDR version to 0.12.0-next.21.

Minor Changes

• NomicFoundation/edr@44e779c: Added function-level configuration overrides for Solidity tests

Patch Changes

• NomicFoundation/edr@b5ad15c: Added support for instrumentation of Solidity 0.8.32 and 0.8.33

• fd70728: Bumped EDR version to 0.12.0-next.20.

  Patch Changes

  • NomicFoundation/edr@34e1ab4: Updated base mainnet eip1559 parameters after SystemConfig update on 2025-12-18
  • NomicFoundation/edr@2272bc0: Fixed excess_blob_gas calculation after Osaka

v3.1.1

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Patch Changes

• b3bde25: Disable test summary when mocha is included in runners (#​7781)

• 88fcf8b: Bumped EDR version to 0.12.0-next.19.

  • faef065: Added support for EIP-7892 (Blob Parameter Only hardforks)

v3.1.0

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Minor Changes

• 7b851f3: Bumped EDR version to 0.12.0-next.17
  • Changed default L1 hardfork to Osaka
  • Changed default OP stack hardfork to Isthmus
  • Fixed default transaction gas limit for post-Osaka hardforks in OP stack and generic chains

Patch Changes

• 7697451: Test summaries are now merged when running multiple test tasks (#​7053)
• a3bf244: Fixed the download of solc, which broke for v0.8.31

v3.0.17

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Patch Changes

• 9f4020b: - Update template projects to ignore local .env files but still allow committing .env.example files, thanks @​KonstantinosChonas! (7702)
• a9a47e5: Fixed hex validation patterns, thanks @​Bilogweb3 (#​7719)
• b0f37e1: Fixed the network config to re-validate and re-resolve chainType on connect() (#​7700).

v3.0.16

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Patch Changes

• 478ee07: Bumped EDR version to 0.12.0-next.16
  • Added support for Osaka hardfork
  • Added full support for OP stack Isthmus hardfork
• 806ee5a: Fixed an issue caused by networks that don't implement eth_feeHistory correctly (#​7678)
• f4b7f7e: Fix: use user config provided value for defaultChainType (#​7700)
• 6b2ed9a: Add ability for task options to be hidden from the CLI (#​7426)
• 6d10d05: Update hardfork validation and resolution to use defaultChainType when chainType is undefined (#​7700)

v3.0.15

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Patch Changes

• 9fb054a: Fix the initialization of the Mocha and Ethers sample project when using pnpm

v3.0.14

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Patch Changes

• 3d42a6f: Remove the compilation spinner when the compilation fails
• 52e1eb4: Fix the test solidity task's compilation process
• ce5c22a: Fail when a file isn't built neither as contract nor test

v3.0.13

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Patch Changes

• 6e4ad6d: Fixed unexpected test failure when running in isolate/gas stats mode (#​1146)
• 6e4ad6d: Added latest dynamic base fee parameters to Base Mainnet chain config (#​1141)

v3.0.12

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Patch Changes

• 147f8a6: Improved the look and feel of compilation output (#​7669)
• 50ce3e0: Fix a bug that could lead to different builds having the same build id. Note that this version will change how every build id is computed.
• 31f0b03: Don't compile solidity tests files when not needed (#​7669)
• a77c06a: Added a new minimal sample project

v3.0.11

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Patch Changes

• a4733f6: Add defineConfig in hardhat/config
• 52d9902: Fix package manager detection
• d45234d: Fixed Etherscan verification failures by removing hardcoded v1 API URLs from chain descriptors (#​7623). Also enhanced config resolution to support partial overrides in block explorer configurations for future extensibility.

v3.0.10

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Patch Changes

• fe28daf: Added support for showing gas statistics after running tests (#​7472 and #​7503)
• 1ab6b75: Optimism ISTHMUS hardfork support added to Hardhat (#​7517)
• 5e64246: Improved JS/TS test tasks to not compile Solidity tests (#​7626)
• 217a1a8: Fix arbitrum sepolia chain id in chain descriptors (thanks @​aelmanaa!)
• 8a03bd0: Fixed gas calculation for EIP-7702 refunds (#​7606)
• 8a03bd0: Make all parameters of eth_feeHistory rpc call required (#​7606)

v3.0.9

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Patch Changes

• 0ee442d: All test runners now set NODE_ENV to "test" in case it is not set before the tests start (#​7511)
• b27b924: Fix bug in flatten task where ordering was incorrect (#​7586)

v3.0.8

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Patch Changes

• d2c9a7f: Don't swallow the original error when trying to improve installation error messages (#​7569)
• ec50793: Validate initialBaseFeePerGas against hardfork only for L1 chain type (#​6181)

v3.0.7

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Patch Changes

• 138d673: Added network.createServer(...) to spawn a Hardhat node programmatically (#​6472)
• d414eda: Added support for conditional dependencies on plugins (#​7424)
• 138d673: Added support for compiling solidity tests separately from contracts (#​6474)
• e17972f: Added hre.versions with Hardhat and EDR package versions.
• 34add2d: Added configVariable support for test.solidity.forking config
• b13620a: Added compilation progress spinner to show build progress (#​7460)
• 4c65d3e: Automatically add compilation results to a running npx hardhat node on recompilation (#​6040)
• 138d673: Updated EDR to version 0.12.0-next.7
• d821a0a: Fixed npm artifact cleanup on windows (#​7459)
• 138d673: Fixed creation of network connections to include config extensions from plugins (#​7106)

v3.0.6

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Patch Changes

• 609d05c: Add deprecation warning for testFail_* test functions
• 8c1cb1e: Fixed dependencies for Hardhat so rpc utils can be loaded (#​7415)

v3.0.5

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Patch Changes

• bebf87c: Added support for Linea network verification, thanks @​kyzooghost (#​7357)
• 0bfe6ac: Fixed coverage report when loading data from large test suites (#​7385)
• be469d6: Display an error message when attempting to use a global hardhat installation in a local repo (#​5362)
• 49cc9ba: Load resolved global options into environment variables during tests (#​7305)
• 8d3b16c: Support for custom compilers (#​7130)
• a475780: Added automatic proxy detection for hardhat-verify and fixed case-insensitive proxy environment variables for network requests (#​7407)
• 3996886: Fixed getBuildInfoPath and getBuildInfoOutputPath to correctly return undefined when build info files are missing 7052

v3.0.4

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Patch Changes

• af301a8: Update validation for solidity test config (#​7205)

v3.0.3

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Patch Changes

• 34a5bc9: Fixed an issue when making historical calls in a forked network (#​7271)
• e0e658a: Upgraded EDR to 0.12.0-next.5. This brings a fix for expectEmit cheatcode stack traces and performance improvements from upgrading to REVM 27 (#​1063)

v3.0.2

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Patch Changes

• d45d544: Fixed passing global network options to node:test and mocha subprocesses (#​7248)
• 003e72c: Help message phrasing unified
• 0120e67: Added warning when running with a non-LTS Node version (#​7167)
• 9261714: Update npm module regex to include versions in solidity imports (#​7308)

v3.0.1

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Patch Changes

• a3bd239: Add Yarn support for Hardhat v3 (#​7192)
• 617254e: Move extraneous dependency to peer (#​7231)
• 6446a38: Add temporary fix for incorrect error message (#​7168)
• 6361ea4: Fixed an issue with compiling a Hardhat project after switching OS users (#​7161)
• 5c9ee7f: Warn the user if they are not using the latest version of Hardhat
• 0fc1f3f: Remove full stops from help message descriptions (#​7185)
• 8acf48f: Improved exception filtering for Sentry telemetry (#​7246)
• e7d2f80: Added missing Solidity test config option allowInternalExpectRevert.

v3.0.0

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Major Changes

• 29cc141: First release of Hardhat 3!

v2.28.2: Hardhat v2.28.2

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This release adds support for Solidity 0.8.32 and 0.8.33.

Patch Changes

• e6ddffc: Bumped EDR version to 0.12.0-next.21.
  • NomicFoundation/edr@34e1ab4: Updated base mainnet eip1559 parameters after SystemConfig update on 2025-12-18
  • NomicFoundation/edr@2272bc0: Fixed excess_blob_gas calculation after Osaka
  • NomicFoundation/edr@44e779c: Added function-level configuration overrides for Solidity tests
  • NomicFoundation/edr@b5ad15c: Added support for instrumentation of Solidity 0.8.32 and 0.8.33

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v2.28.1: Hardhat v2.28.1

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This release adds support for Solidity 0.8.31.

Changes

• c5a9e7c: Bumped EDR version to 0.12.0-next.19.

  • faef065: Added support for EIP-7892 (Blob Parameter Only hardforks)

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💡 The Nomic Foundation is hiring! Check our open positions.

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v2.28.0: Hardhat v2.28.0

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This release sets osaka as the default hardfork for local Hardhat networks. It includes changes to defaults for gas limits to match Osaka's new transaction gas limit.

Changes

• 6f50b84: Changed default L1 hardfork to osaka (@​nomicfoundation/[email protected])
• c69b99d: Update default gas limit to take into account osaka transaction limit (#​7751)
• a7e4215: Update solidity-coverage minimum version to include Osaka changes
• 6f50b84: Changed default OP stack hardfork to isthmus (@​nomicfoundation/[email protected])
• 6f50b84: Fixed default transaction gas limit for post-Osaka hardforks in OP stack and generic chains (@​nomicfoundation/[email protected])

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💡 The Nomic Foundation is hiring! Check our open positions.

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v2.27.2: Hardhat v2.27.2

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This release is a small bug fix to allow downloading of solc version 0.8.31.

Changes

• Fixed the download of solc, which broke for v0.8.31 (#​7761)

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