fix: viem/node esm/cjs conflict (#2298)

* fix(node): esm export

* Create heavy-berries-watch.md

---------

Co-authored-by: jxom <jakemoxey@gmail.com>

.changeset/heavy-berries-watch.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Fixed support for ESM for 4337 trusted setups.

.gitignore

@@ -11,6 +11,7 @@ coverage
 node_modules
 tsconfig*.tsbuildinfo
 wagmi
+src/node/trustedSetups_esm.ts
 **/trusted-setups/**/*.txt
 .idea
 

package.json

@@ -6,8 +6,10 @@
     "bench": "vitest bench",
     "bench:ci": "CI=true vitest bench",
     "build": "bun run clean && bun run build:cjs && bun run build:esm && bun run build:types",
-    "build:cjs": "tsc --project ./tsconfig.build.json --module commonjs --outDir ./src/_cjs --removeComments --verbatimModuleSyntax false && printf '{\"type\":\"commonjs\"}' > ./src/_cjs/package.json",
+    "build:cjs": "bun run build:trustedSetups:start && tsc --project ./tsconfig.build.json --module commonjs --outDir ./src/_cjs --removeComments --verbatimModuleSyntax false && printf '{\"type\":\"commonjs\"}' > ./src/_cjs/package.json && bun run build:trustedSetups:end",
     "build:esm": "tsc --project ./tsconfig.build.json --module es2015 --outDir ./src/_esm && printf '{\"type\": \"module\",\"sideEffects\":false}' > ./src/_esm/package.json",
+    "build:trustedSetups:start": "mv src/node/trustedSetups.ts src/node/trustedSetups_esm.ts && mv src/node/trustedSetups_cjs.ts src/node/trustedSetups.ts",
+    "build:trustedSetups:end": "mv src/node/trustedSetups.ts src/node/trustedSetups_cjs.ts && mv src/node/trustedSetups_esm.ts src/node/trustedSetups.ts",
     "build:types": "tsc --project ./tsconfig.build.json --module esnext --declarationDir ./src/_types --emitDeclarationOnly --declaration --declarationMap",
     "chaincheck": "bun test test/chains/check.test.ts",
     "changeset": "changeset",

src/node/trustedSetups.ts

@@ -1,4 +1,12 @@
-import { resolve } from 'node:path'
+import { dirname, resolve } from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const __filename = fileURLToPath(
+  // import.meta' meta-property is only allowed when the '--module' option is 'es2020', 'es2022', 'esnext', 'system', 'node16', or 'nodenext'
+  // @ts-ignore
+  import.meta.url,
+)
+const __dirname = dirname(__filename)
 
 export const mainnetTrustedSetupPath = resolve(
   __dirname,

src/node/trustedSetups_cjs.ts

@@ -0,0 +1,11 @@
+import { resolve } from 'node:path'
+
+export const mainnetTrustedSetupPath = resolve(
+  __dirname,
+  '../trusted-setups/mainnet.json',
+)
+
+export const minimalTrustedSetupPath = resolve(
+  __dirname,
+  '../trusted-setups/mainnet.json',
+)

tsconfig.build.json

@@ -5,7 +5,8 @@
   "exclude": [
     "src/**/*.test.ts",
     "src/**/*.test-d.ts",
-    "src/**/*.bench.ts"
+    "src/**/*.bench.ts",
+    "src/node/trustedSetups_esm.ts"
   ],
   "compilerOptions": {
     "moduleResolution": "node",