ESLint Plugin East

East idiom diagnostics for ESLint — editor and CI

ESLint Plugin East surfaces the @elaraai/east-diagnostics rule set — the same East idiom checks the Claude plugin runs at write-time — in the editor (via the ESLint extension) and in CI (via eslint / pnpm lint).

It is one type-aware rule, east/east-rules, that runs the whole set against the file's TypeScript program. Native TypeScript type errors are intentionally not reported here — those are tsc's job; this plugin only surfaces the East-specific idioms tsc can't see.

Features

• One rule, every East check - east/east-rules runs the full east-diagnostics set.
• Type-aware - Bridges to the TS program via typescript-eslint parserServices.
• Editor + CI - Shows as squiggles through the ESLint VS Code extension and fails CI through pnpm lint.
• Configurable - Disable individual rules by name; tune rule options.

Installation

npm install -D @elaraai/eslint-plugin-east @typescript-eslint/parser eslint

Quick Start

Requires type-aware linting (@typescript-eslint/parser with a project).

// eslint.config.js
import east from "@elaraai/eslint-plugin-east";
import tsParser from "@typescript-eslint/parser";

export default [
  {
    files: ["**/*.ts"],
    languageOptions: {
      parser: tsParser,
      parserOptions: { projectService: true },
    },
    plugins: { east },
    rules: { "east/east-rules": "warn" },
  },
];

Or extend the bundled config: export default [east.configs.recommended];

Options

"east/east-rules": ["warn", {
  disabled: ["prefer-some-none"],            // turn off specific rules by name
  preferExplicitEastType: { mode: "all-raw-values" },
}]

Claude Code plugin

The East ecosystem also ships a Claude Code plugin — East language skills, example search, and preemptive diagnostics for East code — installed separately from the elaraai marketplace:

# Inside Claude Code
/plugin marketplace add elaraai/east-workspace
/plugin install east@elaraai

# From a terminal
claude plugin marketplace add elaraai/east-workspace
claude plugin install east@elaraai

License

Dual-licensed:

• Open Source: AGPL-3.0 - Free for open source use
• Commercial: Available for proprietary use - contact [email protected]

Developed by Elara AI Pty Ltd