Migrate JS lint and format tooling to Oxlint and Oxfmt (#78)

This PR swaps ESLint and Prettier for Oxlint and Oxfmt, extending the shared `@solana-config/oxc` package, to align the JS client tooling with the converged Solana program-client conventions and gain the substantial speed-up of the Rust-based toolchain. The configs are authored in CommonJS-style `.ts` so they autodiscover under the package's `"type": "commonjs"`, the `sort-keys` rule is disabled to preserve the previous ESLint behaviour, and the CI Node version is bumped to 24 so the TypeScript-strip loader handles `.ts` configs cleanly. The root `package.json` drops `@solana/prettier-config-solana`, and `codama.json` gains an explicit `prettierOptions` block so future client regenerations match the new style without re-introducing Prettier as a dev tool.

Author: lorisleiva

.github/actions/setup/action.yml

@@ -38,7 +38,7 @@ runs:
       if: ${{ inputs.pnpm == 'true' }}
       uses: actions/setup-node@v4
       with:
-        node-version: 20
+        node-version: 24
         cache: 'pnpm'
 
     - name: Install Dependencies

clients/js/.prettierignore

@@ -0,0 +1,7 @@
+const oxfmt = require('oxfmt');
+const solanaFmt = require('@solana-config/oxc/oxfmt');
+
+module.exports = oxfmt.defineConfig({
+    ...solanaFmt,
+    ignorePatterns: ['**/dist/**', 'src/generated/**', 'test-ledger/**'],
+});

clients/js/eslint.config.mjs

@@ -0,0 +1,9 @@
+const oxlint = require('oxlint');
+const solanaConfig = require('@solana-config/oxc/oxlint');
+
+module.exports = oxlint.defineConfig({
+    extends: [solanaConfig],
+    ignorePatterns: ['**/dist/**', 'src/generated/**', 'test-ledger/**'],
+    options: { typeAware: true },
+    rules: { 'sort-keys': 'off' },
+});

clients/js/oxfmt.config.ts

@@ -2,62 +2,63 @@
     "name": "@solana-program/system",
     "version": "0.12.0",
     "description": "JavaScript client for the System program",
+    "homepage": "https://github.com/solana-program/system#readme",
+    "bugs": {
+        "url": "https://github.com/solana-program/system/issues"
+    },
+    "license": "Apache-2.0",
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/solana-program/system.git"
+    },
+    "files": [
+        "./dist/src",
+        "./dist/types",
+        "./src/"
+    ],
+    "type": "commonjs",
     "sideEffects": false,
-    "module": "./dist/src/index.mjs",
     "main": "./dist/src/index.js",
+    "module": "./dist/src/index.mjs",
     "types": "./dist/types/index.d.ts",
-    "type": "commonjs",
     "exports": {
         ".": {
             "types": "./dist/types/index.d.ts",
             "import": "./dist/src/index.mjs",
             "require": "./dist/src/index.js"
         }
     },
-    "files": [
-        "./dist/src",
-        "./dist/types",
-        "./src/"
-    ],
+    "publishConfig": {
+        "access": "public",
+        "registry": "https://registry.npmjs.org"
+    },
     "scripts": {
         "build": "rimraf dist && tsup && tsc -p ./tsconfig.declarations.json",
         "build:docs": "typedoc",
         "dev": "vitest",
         "test": "vitest run",
-        "lint": "eslint src",
-        "lint:fix": "eslint --fix src",
-        "format": "prettier --check src test",
-        "format:fix": "prettier --write src test",
+        "lint": "oxlint",
+        "lint:fix": "oxlint --fix",
+        "format": "oxfmt --check",
+        "format:fix": "oxfmt",
         "prepublishOnly": "pnpm build"
     },
-    "publishConfig": {
-        "access": "public",
-        "registry": "https://registry.npmjs.org"
-    },
-    "license": "Apache-2.0",
-    "repository": {
-        "type": "git",
-        "url": "git+https://github.com/solana-program/system.git"
-    },
-    "bugs": {
-        "url": "https://github.com/solana-program/system/issues"
-    },
-    "homepage": "https://github.com/solana-program/system#readme",
-    "peerDependencies": {
-        "@solana/kit": "^6.4.0"
-    },
     "devDependencies": {
-        "@solana/eslint-config-solana": "^6.0.0",
+        "@solana-config/oxc": "^0.1.1",
+        "@solana/kit": "^6.4.0",
         "@solana/kit-plugin-litesvm": "^0.10.0",
         "@solana/kit-plugin-signer": "^0.10.0",
-        "@solana/kit": "^6.4.0",
         "@types/node": "^24",
-        "eslint": "^9.39.2",
-        "prettier": "^3.7.4",
+        "oxfmt": "^0.48.0",
+        "oxlint": "^1.63.0",
+        "oxlint-tsgolint": "^0.23.0",
         "rimraf": "^6.1.2",
         "tsup": "^8.1.2",
         "typedoc": "^0.28.15",
         "typescript": "^5.9.3",
         "vitest": "^4.0.15"
+    },
+    "peerDependencies": {
+        "@solana/kit": "^6.4.0"
     }
 }