class Rouge::Lexers::Javascript

def self.analyze_text(text)
  return 1 if text.shebang?('node')
  return 1 if text.shebang?('jsc')
  # TODO: rhino, spidermonkey, etc
end

def self.builtins
  @builtins ||= %w(
    Array Boolean Date Error Function Math netscape
    Number Object Packages RegExp String sun decodeURI
    decodeURIComponent encodeURI encodeURIComponent
    Error eval isFinite isNaN parseFloat parseInt
    document window navigator self global
    Promise Set Map WeakSet WeakMap Symbol Proxy Reflect
    Int8Array Uint8Array Uint8ClampedArray
    Int16Array Uint16Array Uint16ClampedArray
    Int32Array Uint32Array Uint32ClampedArray
    Float32Array Float64Array DataView ArrayBuffer
  )
end

def self.constants
  @constants ||= Set.new %w(true false null NaN Infinity undefined)
end

def self.declarations
  @declarations ||= Set.new %w(
    var let const with function class
    extends constructor get set
  )
end

def self.id_regex
  /[$a-z_][a-z0-9_]*/io
end

def self.keywords
  @keywords ||= Set.new %w(
    for in of while do break return continue switch case default
    if else throw try catch finally new delete typeof instanceof
    void this yield import export from as async super this
  )
end

def self.reserved
  @reserved ||= Set.new %w(
    abstract boolean byte char debugger double enum
    final float goto implements int interface
    long native package private protected public short static
    synchronized throws transient volatile
    eval arguments await
  )
end