fix(core): assert that the block gas limit is at least 15 million

hujw77 · Apr 29, 2023 · 7ee54af · 7ee54af
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diff --git a/.changeset/big-brooms-build.md b/.changeset/big-brooms-build.md
@@ -0,0 +1,5 @@
+---
+'@chugsplash/core': patch
+---
+
+Assert that the block gas limit is at least 15 million
diff --git a/packages/core/src/languages/solidity/predeploys.ts b/packages/core/src/languages/solidity/predeploys.ts
@@ -82,6 +82,13 @@ export const initializeChugSplash = async (
   executors: string[],
   logger?: Logger
 ): Promise<void> => {
+  // Check that the block gas limit is reasonably high on this network. Although we can lower 15M to
+  // 10M or less, we err on the side of safety for now. This number should never be lower than 6M
+  // because it costs ~5.3M gas to deploy the ChugSplashManager V1, which is at the contract size
+  // limit.
+  const { gasLimit: blockGasLimit } = await provider.getBlock('latest')
+  assert(blockGasLimit.gte(15_000_000), `Block gas limit is too low.`)
+
   const chugsplashConstructorArgs = getChugSplashConstructorArgs()
 
   logger?.info('[ChugSplash]: deploying DefaultCreate2...')