Bump @chainlink/contracts to v1.5.0 + Add remapping support #199
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The recent release of contracts@v1.5.0 unvendors a number of contracts. 1.5.0 utilizes remappings to resolve the import paths for these dependency packages. - Upgraded to @chainlink/contracts@v1.5.0 - Added helper js file to handle remappings using hardhat-preprocessor - Added remappings.txt that contains remappings - Updated hardhat.config.js to include remapping preprocessor
- Updated README to include remapping section, warning of third party plugin, and a link to the HH3 branch - Updated remappings.txt to specify the node_modules directory for each remapping. This is not required as hardhat 2 searched the node_modules directory for external libraries by default. However, including it allows developers to better understand exactly what is happeng (or where the remapping is going to).
thodges-gh
reviewed
Oct 2, 2025
zeuslawyer
approved these changes
Oct 3, 2025
thodges-gh
requested changes
Oct 6, 2025
Pinned @chainlink/contracts@v1.5.0
zeuslawyer
requested review from
thodges-gh
and removed request for
andrejrakic and
thodges-gh
thodges-gh
approved these changes
Oct 7, 2025
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Summary
This PR modernizes the Hardhat 2 starter kit to work with the unvendored layout in
@chainlink/contracts@1.5.0and documents a way to use Solidity import remappings in HH2 viahardhat-preprocessor.What changed
@chainlink/contractsto v1.5.0hardhat-preprocessorand a small helper to rewrite Solidity imports based on aremappings.txt. Wire it intohardhat.config.jsviapreprocess.contracts@1.5.0(e.g.,vrf/VRFCoordinatorV2_5.abi.json,shared/LinkToken.abi.json).hardhat-preprocessor, and a warning that it’s a third-party plugin.remappings.txtmore explicit by pointing each alias to itsnode_moduleslocation (clearer for newcomers even though HH2 already searchesnode_modules).remappings-helper.jsto explain how the loader and preprocessor hook work.Why
@chainlink/contracts@1.5.0un-vendors several packages and changes import locations; without remapping, HH2 users hit broken imports or long relative paths. Remapping keeps imports clean & resilient.