implicit-index-format

Check that implicit index.js matches the declared package type

Property	Value
Rule ID	files/implicit-index-format
Category	files
Severity	🟡 warning
Fixable	No

What it Checks

When a package uses "main": "./dist/index.js" without an explicit extension like .mjs or .cjs, the file format is determined by the "type" field. This rule checks that the actual content of the file matches the expected format based on the package type.

Configuration

Disable this rule:

tspub check --ignore-rules "files/implicit-index-format"

Or in tspub.config.ts:

export default {
  check: {
    severityOverrides: {
      "files/implicit-index-format": "off",  // or "warning", "error", "info"
    },
  },
};