opencode-harness/tsconfig.json

{
  "compilerOptions": {
    "target": "ES2022",
    "module": "ESNext",
    "moduleResolution": "bundler",
    // SPEC §2-era name "allowImportingExtensions" is not a real tsc flag;
    // the correct TypeScript (≥5.7) flag is "allowImportingTsExtensions"
    // (default false — preserved here explicitly).
    "allowImportingTsExtensions": false,
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "outDir": "dist",
    "rootDir": ".",
    "types": ["bun"]
  },
  "include": ["src/**/*", "test/**/*"]
}