feat: hardhat plugin for compiler settings

scripts/pre.mjs

@@ -22,6 +22,7 @@ await fs.mkdir(buildDir)
 await fs.writeFile(path.join(buildDir, 'package.json'), JSON.stringify(finalPackage))
 
 await fs.cp(path.join(__dirname, '../contracts'), buildDir, { recursive: true })
+await fs.cp(path.join(__dirname, '../src/hardhat.js'), path.join(buildDir, 'hardhat.js'), { recursive: false })
 await fs.rm(path.join(buildDir, 'Test.sol'))
 
 await fs.cp(path.join(__dirname, '../README.md'), path.join(buildDir, 'README.md'))

src/hardhat.js

@@ -0,0 +1,24 @@
+const { extendConfig } = require('hardhat/config')
+
+extendConfig((config, userConfig) => {
+  if (typeof config.solidity === 'string') {
+    const version = config.solidity
+    config.solidity = {
+      compilers: [
+        { version },
+      ]
+    }
+  }
+  if (typeof config.solidity.overrides !== 'object') {
+    config.solidity.overrides = {}
+  }
+  config.solidity.overrides['poseidon-solidity/*'] = {
+    version: '0.7.6',
+    settings: {
+      optimizer: {
+        enabled: true,
+        runs: 2**32 - 1
+      }
+    }
+  }
+})