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hardhat.config.js
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hardhat.config.js
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require('@nomiclabs/hardhat-ethers')
require('hardhat-preprocessor')
require('@nomicfoundation/hardhat-chai-matchers')
const readFileSync = require('fs').readFileSync
function getRemappings() {
return readFileSync("remappings.txt", "utf8")
.split("\n")
// remove empty lines
.filter(Boolean)
.map((line) => line.trim().split("="))
// remove node_modules prefix
.map(([from, to]) => [from, to.replace(/^.*node_modules\//, '')])
}
module.exports = {
solidity: {
version: '0.8.17',
settings: {
optimizer: {
enabled: true,
runs: 200,
},
},
},
preprocess: {
eachLine: (hre) => ({
transform: (line) => {
if (line.match(/^\s*import .*"\s*;/i)) {
for (const [from, to] of getRemappings()) {
const regex = new RegExp(`^(\s*import .*")(${from})(.*"\s*;)`);
if (line.match(regex)) {
line = line.replace(regex, `$1${to}$3`);
break;
}
}
}
return line;
},
}),
},
}