false-export-default

Detect export default in types with module.exports in JS (FalseExportDefault)

Property	Value
Rule ID	types/false-export-default
Category	types
Severity	🟡 warning
Fixable	No

What it Checks

Detects when a .d.ts file declares export default but the corresponding .js file uses module.exports. This mismatch (known as FalseExportDefault) causes import x from 'pkg' to return undefined in strict ESM environments.

Configuration

Disable this rule:

tspub check --ignore-rules "types/false-export-default"

Or in tspub.config.ts:

export default {
  check: {
    severityOverrides: {
      "types/false-export-default": "off",  // or "warning", "error", "info"
    },
  },
};