Merge pull request #5975 from ethereum-optimism/cleanup/ethers-fallback-provider

cleanup: delete custom ethers fallback provider

packages/core-utils/package.json

@@ -41,7 +41,6 @@
     "@ethersproject/constants": "^5.7.0",
     "@ethersproject/hash": "^5.7.0",
     "@ethersproject/keccak256": "^5.7.0",
-    "@ethersproject/providers": "^5.7.0",
     "@ethersproject/rlp": "^5.7.0",
     "@ethersproject/transactions": "^5.7.0",
     "@ethersproject/properties": "^5.7.0",
@@ -50,6 +49,7 @@
     "chai": "^4.3.4"
   },
   "devDependencies": {
+    "@types/node": "^12.12.6",
     "mocha": "^10.0.0"
   }
 }

packages/core-utils/src/external/ethers/fallback-provider.ts

-/**
- * Provider Utilities
- */
-
-import {
-  Provider,
-  StaticJsonRpcProvider,
-  FallbackProvider as EthersFallbackProvider,
-} from '@ethersproject/providers'
-import { ConnectionInfo } from '@ethersproject/web'
-
-export interface HttpHeaders {
-  [key: string]: string
-}
-
-// Copied from @ethersproject/providers since it is not
-// currently exported
-export interface FallbackProviderConfig {
-  // The Provider
-  provider: Provider
-  // The priority to favour this Provider; higher values are used first
-  priority?: number
-  // Timeout before also triggering the next provider; this does not stop
-  // this provider and if its result comes back before a quorum is reached
-  // it will be incorporated into the vote
-  // - lower values will cause more network traffic but may result in a
-  //   faster retult.
-  stallTimeout?: number
-  // How much this provider contributes to the quorum; sometimes a specific
-  // provider may be more reliable or trustworthy than others, but usually
-  // this should be left as the default
-  weight?: number
-}
-
-export const FallbackProvider = (
-  config: string | FallbackProviderConfig[],
-  headers?: HttpHeaders
-) => {
-  const configs = []
-  // Handle the case of a string of comma delimited urls
-  if (typeof config === 'string') {
-    const urls = config.split(',')
-    for (const [i, url] of urls.entries()) {
-      const connectionInfo: ConnectionInfo = { url }
-      if (typeof headers === 'object') {
-        connectionInfo.headers = headers
-      }
-      configs.push({
-        priority: i,
-        provider: new StaticJsonRpcProvider(connectionInfo),
-      })
-    }
-    return new EthersFallbackProvider(configs)
-  }
-
-  return new EthersFallbackProvider(config)
-}

packages/core-utils/src/external/ethers/index.ts

@@ -2,5 +2,4 @@
  * Utilities that extend or enhance the ethers.js library
  */
 
-export * from './fallback-provider'
 export * from './network'

yarn.lock

@@ -1666,7 +1666,7 @@
     bech32 "1.1.4"
     ws "7.4.6"
 
-"@ethersproject/providers@5.7.1", "@ethersproject/providers@^5.7.0":
+"@ethersproject/providers@5.7.1":
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/@ethersproject/providers/-/providers-5.7.1.tgz#b0799b616d5579cd1067a8ebf1fc1ec74c1e122c"
   integrity sha512-vZveG/DLyo+wk4Ga1yx6jSEHrLPgmTt+dFv0dv8URpVCRf0jVhalps1jq/emN/oXnMRsC7cQgAF32DcXLL7BPQ==