Merge pull request #1879 from ethereum-optimism/feat/forkmode

feat: hardhat fork mode

.changeset/rich-suits-drive.md

+---
+'@eth-optimism/hardhat-node': patch
+---
+
+Add fork mode config to ethereumoptimism/hardhat docker image

.changeset/unlucky-drinks-laugh.md

+---
+'@eth-optimism/hardhat-node': patch
+---
+
+Update to hardhat@2.7.0

ops/docker-compose.yml

@@ -7,6 +7,8 @@ services:
     build:
       context: ./docker/hardhat
       dockerfile: Dockerfile
+    env_file:
+      -  ./envs/l1_chain.env
     ports:
         # expose the service to the host for integration testing
       - ${L1CHAIN_HTTP_PORT:-9545}:8545

ops/docker/hardhat/hardhat.config.js

-module.exports = {
+const isForkModeEnabled = !!process.env.FORK_URL
+const forkUrl = process.env.FORK_URL
+const forkStartingBlock = parseInt(process.env.FORK_STARTING_BLOCK) || undefined
+const gasPrice = parseInt(process.env.GAS_PRICE) || 0
+
+const config = {
   networks: {
     hardhat: {
-      gasPrice: 0,
+      gasPrice,
       initialBaseFeePerGas: 0
     },
   },
   analytics: { enabled: false },
 }
+
+if (isForkModeEnabled) {
+  console.log(`Running hardhat in a fork mode! URL: ${forkUrl}`)
+  if (forkStartingBlock) {
+    console.log(`Starting block: ${forkStartingBlock}`)
+  }
+  config.networks.hardhat.forking = {
+    url: forkUrl,
+    blockNumber: forkStartingBlock,
+  }
+} else {
+  console.log('Running with a fresh state...')
+}
+
+module.exports = config

ops/docker/hardhat/package.json

@@ -6,6 +6,6 @@
   },
   "license": "MIT",
   "dependencies": {
-    "hardhat": "^2.6.5"
+    "hardhat": "^2.7.0"
   }
 }

ops/envs/l1_chain.env

+FORK_URL=
+FORK_STARTING_BLOCK=

yarn.lock

@@ -2639,6 +2639,13 @@
   dependencies:
     antlr4ts "^0.5.0-alpha.4"
 
+"@solidity-parser/parser@^0.14.0":
+  version "0.14.0"
+  resolved "https://registry.yarnpkg.com/@solidity-parser/parser/-/parser-0.14.0.tgz#d51f074efb0acce0e953ec48133561ed710cebc0"
+  integrity sha512-cX0JJRcmPtNUJpzD2K7FdA7qQsTOk1UZnFx2k7qAg9ZRvuaH5NBe5IEdBMXGlmf2+FmjhqbygJ26H8l2SV7aKQ==
+  dependencies:
+    antlr4ts "^0.5.0-alpha.4"
+
 "@szmarczak/http-timer@^1.1.2":
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/@szmarczak/http-timer/-/http-timer-1.1.2.tgz#b1665e2c461a2cd92f4c1bbf50d5454de0d4b421"
@@ -8456,10 +8463,10 @@ hardhat@^2.3.0:
     uuid "^3.3.2"
     ws "^7.4.6"
 
-hardhat@^2.6.5:
-  version "2.6.5"
-  resolved "https://registry.yarnpkg.com/hardhat/-/hardhat-2.6.5.tgz#61d3e22da34e1b175bbe599f77396b32f9788b58"
-  integrity sha512-sBhREWZjQTtR/KMMp2F3ySuDqL0norjNq68geR3nlXRHXYKuNKeL7xqVsmldekt3sVB5Wh1WX7xDX79kvUr+fA==
+hardhat@^2.7.0:
+  version "2.7.0"
+  resolved "https://registry.yarnpkg.com/hardhat/-/hardhat-2.7.0.tgz#d8f01bc07bdd88ccaa00719ddb18618bc59a73b5"
+  integrity sha512-DqweY3KH5gwExoZ8EtsAfioj0Hk0NBXWXT3fMXWkiQNfyYBoZLrqdPNkbJ/E2LD4mZ+BKF7v/1chYR9ZCn2Z+g==
   dependencies:
     "@ethereumjs/block" "^3.4.0"
     "@ethereumjs/blockchain" "^5.4.0"
@@ -8468,7 +8475,7 @@ hardhat@^2.6.5:
     "@ethereumjs/vm" "^5.5.2"
     "@ethersproject/abi" "^5.1.2"
     "@sentry/node" "^5.18.1"
-    "@solidity-parser/parser" "^0.11.0"
+    "@solidity-parser/parser" "^0.14.0"
     "@types/bn.js" "^5.1.0"
     "@types/lru-cache" "^5.1.0"
     abort-controller "^3.0.0"
@@ -8506,7 +8513,7 @@ hardhat@^2.6.5:
     stacktrace-parser "^0.1.10"
     "true-case-path" "^2.2.1"
     tsort "0.0.1"
-    uuid "^3.3.2"
+    uuid "^8.3.2"
     ws "^7.4.6"
 
 has-ansi@^2.0.0:
@@ -15513,6 +15520,11 @@ uuid@^3.3.2, uuid@^3.3.3:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
   integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
 
+uuid@^8.3.2:
+  version "8.3.2"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
+  integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
+
 v8-compile-cache@^2.0.3:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.3.0.tgz#2de19618c66dc247dcfb6f99338035d8245a2cee"