tsconfig.base.json

{
  // https://github.com/tsconfig/bases/blob/141d65201924bae1c70a0a4e18d05f42fbf93a9a/bases/strictest.json
  "compilerOptions": {
    "strict": true,
    "allowUnusedLabels": false,
    "allowUnreachableCode": false,
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,

    "verbatimModuleSyntax": false,
    "checkJs": true,

    "esModuleInterop": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    //
    "isolatedModules": true, // https://preconstruct.tools/guides/building-typescript-packages
    "noEmit": true,
    "customConditions": ["source"],
    "moduleResolution": "Bundler",
    "module": "ESNext"
  },
  "exclude": ["node_modules", ".changeset", ".github", "dist"],
  "types": ["node", "vitest/importMeta"],
  //
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Strictest"
}