Configuration

FlagLint reads the first matching config file from:

.flaglintrc
.flaglintrc.json
flaglint.config.json

Use --config <path> to pass a specific file.

Example

{
  "include": ["**/*.{ts,js}"],
  "exclude": ["**/node_modules/**", "**/dist/**"],
  "provider": "launchdarkly",
  "minFileCount": 0,
  "wrappers": ["evaluateFlag"],
  "openFeatureClientBindings": [
    {
      "importName": "openFeatureClient",
      "modulePatterns": ["**/platform/feature-flags"]
    }
  ]
}

Fields

Field	Default	Purpose
`include`	`["*/.{ts,tsx,js,jsx}"]`	Files to scan.
`exclude`	common build/test output	Files to skip.
`provider`	`launchdarkly`	Current implemented provider scope.
`minFileCount`	`0`	Optional local source review heuristic.
`wrappers`	`[]`	Wrapper functions to detect as flag evaluations. Accepts string names or object form (see below).
`openFeatureClientBindings`	`[]`	Imported shared client allowlist for `migrate --apply`.
`reportTitle`	unset	Optional report title.
`outputDir`	`.`	Directory for generated report files.

Wrappers — String and Object Form

The wrappers field accepts two forms, which can be mixed in the same array.

String form — any call to a function with that name is treated as a flag evaluation:

{
  "wrappers": ["evaluateFlag", "getFeature"]
}

Object form — the call is only detected when the function is imported from a specific package, preventing false positives from unrelated functions with the same name:

{
  "wrappers": [
    "evaluateFlag",
    {
      "import": "my-feature-sdk",
      "function": "getFlag",
      "flagKeyArgument": 0
    }
  ]
}

Object form fields:

Field	Purpose
`import`	The package name that must be imported for this call to be detected.
`function`	The exported function name to detect.
`flagKeyArgument`	Zero-based index of the argument that holds the flag key.

With the example above, getFlag("my-flag-key", ctx) is detected only when getFlag is imported from my-feature-sdk. A getFlag call imported from any other package is ignored.

Configuration

Example

Fields

Wrappers — String and Object Form

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