valid-sideEffects

💼 This rule is enabled in the following configs: ✅ recommended, 📦 recommended-publishable.

This rule uses package-json-validator to validate the sideEffects property, if present, against the following criteria:

• It must be either a boolean or an Array
• If the value is an Array, it should only consist of non-empty strings

Examples

❌ Incorrect

{
  "sideEffects": "false"
}

✅ Correct

{
  "sideEffects": false
}

{
  "sideEffects": ["./dist/polyfills.js"]
}

Related Rules

• require-sideEffects - Enforces that the sideEffects property is present.

Further Reading

• Webpack: Tree Shaking > Mark the file as side-effect free