rules/utils/config_utils library

Type-safe helpers for reading rule configuration from analysis_options.yaml.

Each helper extracts a value from the rule's JSON config map, returning null on type mismatch instead of throwing. This lets rule constructors use ?? to fall back to defaults cleanly.

Functions

configBool(Map<String, Object?> json, String key) → bool?

Reads a bool value from json at key. Returns null if missing or wrong type.

configDouble(Map<String, Object?> json, String key) → double?

Reads a double value from json at key. Accepts both int and double. Returns null if missing or wrong type.

configInt(Map<String, Object?> json, String key) → int?

Reads an int value from json at key. Returns null if missing or wrong type.

configList(Map<String, Object?> json, String key) → List?

Reads a raw List from json at key. Returns null if missing or wrong type.

configMapList(Map<String, Object?> json, String key) → List<Map<String, dynamic>>?

Reads a List<Map<String, dynamic>> from json at key. Returns null if missing or wrong type.

configString(Map<String, Object?> json, String key) → String?

Reads a String value from json at key. Returns null if missing or wrong type.

configStringList(Map<String, Object?> json, String key) → List<String>?

Reads a List<String> from json at key. Returns null if missing or wrong type.

optionsJson(Map<String, Object?>? options) → Map<String, Object?>

Extracts the JSON config map from options, returning an empty map if null.