duplicate-dep

Check for packages in both dependencies and devDependencies

Property	Value
Rule ID	files/duplicate-dep
Category	files
Severity	🔴 error
Fixable	No

What it Checks

A package should not be in both dependencies and devDependencies. This causes confusion about whether it ships with your package.

Configuration

Disable this rule:

tspub check --ignore-rules "files/duplicate-dep"

Or in tspub.config.ts:

export default {
  check: {
    severityOverrides: {
      "files/duplicate-dep": "off",  // or "warning", "error", "info"
    },
  },
};