@sveltium/eslint-rules

Custom ESLint layout rules for Sveltium projects. Enforces consistent whitespace patterns around blocks and object declarations.

Requires ESLint 9+ (flat config).

Installation

npm install -D @sveltium/eslint-rules eslint

Usage

// eslint.config.js
import sveltiumRules from "@sveltium/eslint-rules/index.js";

export default [
  {
    plugins: {
      sveltium: sveltiumRules,
    },
    rules: {
      "sveltium/blank-line-after-block-open-if-long": ["error", { minInnerLines: 4, targets: ["function", "if"] }],
      "sveltium/blank-line-after-object-declaration": "error",
    },
  },
];

Rules

blank-line-after-object-declaration

Enforces a blank line after any variable declaration that uses an object literal initializer. Auto-fixable.

// Bad
const config = { a: 1 };
doSomething();

// Good
const config = { a: 1 };

doSomething();

No options.

blank-line-after-block-open-if-long

Enforces a blank line after the opening { of a block when the block exceeds a configurable line count. Auto-fixable.

// Bad (block has > 2 inner lines, no blank line after {)
function doThing() {
  const a = 1;
  const b = 2;
  const c = 3;
  return a + b + c;
}

// Good
function doThing() {

  const a = 1;
  const b = 2;
  const c = 3;
  return a + b + c;
}

Options

| Option | Type | Default | Description | |---|---|---|---| | minInnerLines | integer | 2 | Minimum inner lines before the rule triggers | | targets | array | ["function", "if"] | Which block types to check: "function" (declarations, expressions, arrows) and/or "if" |

License

MIT