Hardhat Contract Sizer

Output Solidity contract sizes with Hardhat.

Versions of this plugin prior to 2.0.0 were released as buidler-contract-sizer.

Installation

npm install --save-dev hardhat-contract-sizer
# or
yarn add --dev hardhat-contract-sizer

Usage

Load plugin in Hardhat config:

require('hardhat-contract-sizer');

Add configuration under the contractSizer key:

option	description	default
alphaSort	whether to sort results table alphabetically (default sort is by contract size)	false
runOnCompile	whether to output contract sizes automatically after compilation	false
disambiguatePaths	whether to output the full path to the compilation artifact (relative to the Hardhat root directory)	false
strict	whether to throw an error if any contracts exceed the size limit (may cause compatibility issues with solidity-coverage)	false
only	Array of String matchers used to select included contracts, defaults to all contracts if length is 0	[]
except	Array of String matchers used to exclude contracts	[]
outputFile	file path to write contract size report	null
unit	unit of measurement for the size of contracts, which can be expressed in 'B' (bytes), 'kB' (kilobytes) or 'KiB' (kibibytes)	KiB

contractSizer: {
  alphaSort: true,
  disambiguatePaths: false,
  runOnCompile: true,
  strict: true,
  only: [':ERC20$'],
}

Run the included Hardhat task to output compiled contract sizes:

npx hardhat size-contracts
# or
yarn run hardhat size-contracts

By default, the hardhat compile task is run before sizing contracts. This behavior can be disabled with the --no-compile flag:

npx hardhat size-contracts --no-compile
# or
yarn run hardhat size-contracts --no-compile

Development

Install dependencies via Yarn:

yarn install

Setup Husky to format code on commit:

yarn prepare