browserValidity

Enforces that the browser property is valid.

✅ This rule is included in the package-json logical presets.

This rule checks that the browser property is a non-empty string. The value should be the path to the module used when the package is bundled for browsers.

Examples

❌ Incorrect

{
  "browser": ""
}

{
  "browser": {}
}

✅ Correct

{
  "browser": "./browser.js"
}

When Not To Use It

If you don’t need compliance with npm’s browser field specification, you can disable this rule. For example, if your package’s browser entry point is interpreted by tooling that accepts a different shape, this rule may not be correct for you.

Related Rules

• browserPresence - Enforces that the browser property is present.

Further Reading

• npm: package.json > browser

Equivalents in Other Linters

• ESLint: package-json/valid-browser