@fjall/eslint-plugin

Flat-config ESLint plugin holding Fjall's internal coding-standard rules (credential masking, Zod strictness, tenant-isolation, AWS-SDK abort hygiene, CDK construct invariants, and more).

It is the single source of truth shared between the Fjall monorepo and the Fjall web app — the web app consumes it from npm because it builds without a monorepo checkout. The rules encode Fjall-specific conventions and are not intended for use outside Fjall projects.

Usage

// eslint.config.mjs (flat config)
import fjall from "@fjall/eslint-plugin";

export default [
  {
    plugins: { fjall },
    rules: {
      "fjall/zod-strict-required": "error",
      "fjall/mask-error-message-at-boundary": "error"
      // … enable the rules you need
    }
  }
];

Every rule lives in its own file (<rule-name>.js); index.js is the barrel exposing them all under the rules map. AST helpers that more than two rules would otherwise re-derive (the scope-chain variable lookup, the TS type-wrapper unwrap) live in astHelpers.js and are imported, never copied — a rule still carrying a private copy migrates to the shared helper as it is next touched.