side-effects

Check that sideEffects field is set for tree-shaking

Property	Value
Rule ID	metadata/side-effects
Category	metadata
Severity	🟡 warning
Fixable	No

What it Checks

The "sideEffects" field tells bundlers whether your package has side effects. Setting it to false enables better tree-shaking.

Configuration

Disable this rule:

tspub check --ignore-rules "metadata/side-effects"

Or in tspub.config.ts:

export default {
  check: {
    severityOverrides: {
      "metadata/side-effects": "off",  // or "warning", "error", "info"
    },
  },
};