Skip to main content

duplicate-rule

Summary: Duplicate rule

Category: Bugs

Avoid

package policy

import rego.v1

allow if user.is_admin

allow if user.is_developer

# we already covered this!
allow if user.is_admin

Prefer

package policy

import rego.v1

allow if user.is_admin

allow if user.is_developer

Rationale​

Duplicated rules are likely a mistake, perhaps from pasting contents from another file.

This rule identifies rules that are identical in terms of their name, assigned value, and body — excluding whitespace. In technical terms, if two or more rules share the same abstract syntax tree, they are considered to be duplicates.

Exceptions​

Note that this rule currently works at the scope of a single file. If you're using the same package across multiple files, there could still be duplicates across those files. This will be addressed in a future version of this rule.

Configuration Options​

This linter rule provides the following configuration options:

rules:
  bugs:
    duplicate-rule:
      # one of "error", "warning", "ignore"
      level: error

Community​

If you think you've found a problem with this rule or its documentation, would like to suggest improvements, new rules, or just talk about Regal in general, please join us in the #regal channel in the Styra Community Slack!