Function isAlwaysBoolean

src/function/algebra/simplifyCore.js:54–56

(node)

  // test if a node will always have a boolean value (true/false)
  // not sure if this list is complete
  function isAlwaysBoolean (node) {
    return isOperatorNode(node) && ['and', 'not', 'or'].includes(node.op)
  }

  const { hasProperty, isCommutative } =
    createUtil({ FunctionNode, OperatorNode, SymbolNode })