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:
duplicated-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!