Rules

This page contains an index of all 101 Regal rules.

All CategoriesBugsCustomIdiomaticImportsPerformanceStyleTesting

Category	ID	Summary
Bugs	bugs/annotation-without-metadata	Annotation without metadata
Bugs	bugs/argument-always-wildcard	Argument is always a wildcard
Bugs	bugs/constant-condition	Constant condition
Bugs	bugs/deprecated-builtin	Constant condition
Bugs	bugs/duplicate-rule	Duplicate rule
Bugs	bugs/if-empty-object	Empty object following if
Bugs	bugs/if-object-literal	Object literal following if
Bugs	bugs/import-shadows-rule	Import shadows rule
Bugs	bugs/impossible-not	Impossible not condition Type: Aggregate - runs both on single files as well as when more than one file is provided for linting
Bugs	bugs/inconsistent-args	Inconsistently named function arguments
Bugs	bugs/internal-entrypoint	Entrypoint can't be marked internal
Bugs	bugs/invalid-metadata-attribute	Invalid attribute in metadata annotation
Bugs	bugs/leaked-internal-reference	Outside reference to internal rule or function
Bugs	bugs/not-equals-in-loop	Use of != in loop
Bugs	bugs/redundant-existence-check	Redundant existence check
Bugs	bugs/redundant-loop-count	Redundant count before loop
Bugs	bugs/rule-assigns-default	Rule assigned its default value
Bugs	bugs/rule-named-if	Rule named if
Bugs	bugs/rule-shadows-builtin	Rule name shadows built-in
Bugs	bugs/sprintf-arguments-mismatch	Mismatch in sprintf arguments count
Bugs	bugs/time-now-ns-twice	Repeated calls to time.now_ns
Bugs	bugs/top-level-iteration	Iteration in top-level assignment
Bugs	bugs/unassigned-return-value	Non-boolean return value unassigned
Bugs	bugs/unused-output-variable	Unused output variable
Bugs	bugs/var-shadows-builtin	Variable shadows built-in
Bugs	bugs/zero-arity-function	Avoid functions without args
Custom	custom/forbidden-function-call	Forbidden function call
Custom	custom/missing-metadata	Package or rule missing metadata
Custom	custom/naming-convention	Naming convention violation
Custom	custom/narrow-argument	Function argument can be narrowed
Custom	custom/one-liner-rule	Rule body could be made a one-liner
Custom	custom/prefer-value-in-head	Prefer value in rule head
Idiomatic	idiomatic/ambiguous-scope	Ambiguous metadata scope
Idiomatic	idiomatic/boolean-assignment	Prefer if over boolean assignment
Idiomatic	idiomatic/custom-has-key-construct	Custom function may be replaced by in and object.keys
Idiomatic	idiomatic/custom-in-construct	Custom function may be replaced by in keyword
Idiomatic	idiomatic/directory-package-mismatch	Directory structure should mirror package
Idiomatic	idiomatic/equals-pattern-matching	Prefer pattern matching in function arguments
Idiomatic	idiomatic/in-wildcard-key	Unnecessary wildcard key
Idiomatic	idiomatic/no-defined-entrypoint	Missing entrypoint annotation Type: Aggregate - only runs when more than one file is provided for linting
Idiomatic	idiomatic/non-raw-regex-pattern	Use raw strings for regex patterns Automatically fixable: Yes
Idiomatic	idiomatic/prefer-set-or-object-rule	Prefer set or object rule over comprehension
Idiomatic	idiomatic/single-item-in	Avoid in for single item collection
Idiomatic	idiomatic/use-contains	Use the contains keyword
Idiomatic	idiomatic/use-if	Use the if keyword
Idiomatic	idiomatic/use-in-operator	Use in to check for membership
Idiomatic	idiomatic/use-object-keys	Prefer to use object.keys
Idiomatic	idiomatic/use-some-for-output-vars	Use some to declare output variables
Idiomatic	idiomatic/use-strings-count	Use strings.count where possible
Imports	imports/avoid-importing-input	Avoid importing input
Imports	imports/circular-import	Avoid circular imports
Imports	imports/confusing-alias	Confusing alias of existing import
Imports	imports/ignored-import	Reference ignores import
Imports	imports/implicit-future-keywords	Implicit future keywords
Imports	imports/import-after-rule	Import declared after rule
Imports	imports/import-shadows-builtin	Import shadows built-in namespace
Imports	imports/import-shadows-import	Import shadows import
Imports	imports/pointless-import	Importing own package is pointless
Imports	imports/prefer-package-imports	Prefer importing packages over rules Type: Aggregate - only runs when more than one file is provided for linting
Imports	imports/redundant-alias	Redundant alias
Imports	imports/redundant-data-import	Redundant import of data
Imports	imports/unresolved-import	Unresolved import Type: Aggregate - only runs when more than one file is provided for linting
Imports	imports/unresolved-reference	Unresolved Reference
Imports	imports/use-rego-v1	Use import rego.v1 Automatically fixable: Yes
Performance	performance/defer-assignment	Assignment can be deferred
Performance	performance/non-loop-expression	Non loop expression in loop
Performance	performance/walk-no-path	Call to walk can be optimized
Performance	performance/with-outside-test-context	with used outside of test context
Style	style/avoid-get-and-list-prefix	Avoid get_ and list_ prefix for rules and functions
Style	style/chained-rule-body	Avoid chaining rule bodies
Style	style/comprehension-term-assignment	Assignment can be moved to comprehension term
Style	style/default-over-else	Prefer default assignment over fallback else
Style	style/default-over-not	Prefer default assignment over negated condition
Style	style/detached-metadata	Detached metadata annotation
Style	style/double-negative	Avoid double negatives
Style	style/external-reference	External reference in function
Style	style/file-length	Max file length exceeded
Style	style/function-arg-return	Return value assigned in function argument
Style	style/line-length	Line too long
Style	style/messy-rule	Messy incremental rule
Style	style/mixed-iteration	Mixed iteration style
Style	style/no-whitespace-comment	Comment should start with whitespace Automatically fixable: Yes
Style	style/opa-fmt	File should be formatted with opa fmt Automatically fixable: Yes
Style	style/pointless-reassignment	Pointless reassignment of variable
Style	style/prefer-snake-case	Prefer snake_case for names
Style	style/prefer-some-in-iteration	Prefer some .. in for iteration
Style	style/rule-length	Max rule length exceeded
Style	style/rule-name-repeats-package	Avoid repeating package path in rule names
Style	style/todo-comment	Avoid TODO Comments
Style	style/trailing-default-rule	Default rule should be declared first
Style	style/unconditional-assignment	Unconditional assignment in rule body
Style	style/unnecessary-some	Unnecessary use of some
Style	style/use-assignment-operator	Prefer := over = for assignment Automatically fixable: Yes
Style	style/yoda-condition	Yoda condition, it is
Testing	testing/dubious-print-sprintf	Dubious use of print and sprintf
Testing	testing/file-missing-test-suffix	Files containing tests should have a _test.rego suffix
Testing	testing/identically-named-tests	Multiple tests with same name
Testing	testing/metasyntactic-variable	Metasyntactic variable name
Testing	testing/print-or-trace-call	Call to print or trace function
Testing	testing/test-outside-test-package	Test outside of test package
Testing	testing/todo-test	TODO test encountered