Struct FlagsConfig 

pub struct FlagsConfig {
    pub sdk_patterns: Vec<SdkPattern>,
    pub env_prefixes: Vec<String>,
    pub config_object_heuristics: bool,
}

Feature flag detection configuration.

Controls which patterns fallow uses to detect feature flags in source code. Configured via the flags section in .fallowrc.json, .fallowrc.jsonc, fallow.toml, or .fallow.toml.

Examples

{
  "flags": {
    "sdkPatterns": [
      { "function": "useFlag", "nameArg": 0, "provider": "LaunchDarkly" }
    ],
    "envPrefixes": ["FEATURE_", "NEXT_PUBLIC_ENABLE_"],
    "configObjectHeuristics": false
  }
}

Fields

sdk_patterns: Vec<SdkPattern>

Additional SDK call patterns to detect as feature flags. These are merged with the built-in patterns for common providers including LaunchDarkly, Statsig, Unleash, GrowthBook, Split, PostHog, Vercel Flags, ConfigCat, Flagsmith, Optimizely, and Eppo.

env_prefixes: Vec<String>

Environment variable prefixes that indicate feature flags. Merged with built-in prefixes. Only process.env.* accesses matching these prefixes are reported as feature flags.

config_object_heuristics: bool

Enable config object heuristic detection. When true, property accesses on objects whose name contains “feature”, “flag”, or “toggle” are reported as low-confidence feature flags. Default: false (opt-in due to higher false positive rate).

Trait Implementations

impl Clone for FlagsConfig

fn clone(&self) -> FlagsConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FlagsConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FlagsConfig

fn default() -> FlagsConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FlagsConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for FlagsConfig

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl Serialize for FlagsConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.