@neabyte/deno-lint

A collection of custom lint rules built on Deno's native lint plugin system.

Requires Deno 2.2.0+. Learn more about Deno Lint Plugins.

Installation

Run the following command to add the lint plugin to your project:

deno add jsr:@neabyte/deno-lint

To exclude specific rules, configure them in your deno.json:

{
  "lint": {
    "plugins": [
      "jsr:@neabyte/deno-lint@0.3.1" // add this module
    ],
    "rules": {
      "exclude": [
        "deno-lint/require-error-handling",
        "deno-lint/explicit-parameter-types"
        // Exclude any rules you don't want to use
      ]
    }
  }
}

Available Rules

Type Safety & Annotations

• explicit-parameter-types - Requires explicit type annotations on parameters
• explicit-return-types - Requires explicit return type annotations
• prefer-const-assertions - Prefers as const over type assertion for better type inference

Modern JavaScript Features

• prefer-nullish-coalescing - Prefers nullish coalescing (??) over logical OR (||) for null/undefined checks
• prefer-optional-chain - Prefers optional chaining (?.) over logical AND (&&) for property access
• prefer-template-literals - Prefers template literals over string concatenation

Array & Object Operations

• prefer-array-every - Prefers Array.every() over manual iteration patterns
• prefer-array-flat - Prefers Array.flat() over manual flattening patterns
• prefer-array-includes - Prefers Array.includes() over manual indexOf checks
• prefer-array-some - Prefers Array.some() over manual iteration patterns
• prefer-spread - Prefers spread syntax (...) over manual array/object operations

Code Quality & Style

• async-function-naming - Enforces async functions to have 'Async' suffix
• prefer-arrow-callback - Prefers arrow functions over regular function expressions in callback contexts
• prefer-early-return - Prefers early returns over nested conditions for better readability

Error Handling & Safety

• prefer-promise-reject-errors - Enforces Error objects in Promise.reject() calls
• prefer-string-starts-ends-with - Prefers String.startsWith() and String.endsWith() over substring checks
• require-error-handling - Ensures Deno file operations are properly awaited

License

MIT License - see LICENSE file for details.