code: function isBinaryNegatingOfIndexOf(node) {
  		return node.operator === "~" &&
  			node.argument.type === "CallExpression" &&
  			node.argument.callee.type === "MemberExpression" &&
  			node.argument.callee.property.type === "Identifier" &&
  			INDEX_OF_PATTERN.test(node.argument.callee.property.name);
  	}
docs: Checks whether or not a node is a binary negating of `.indexOf()` method calling.
  @param {ASTNode} node - An UnaryExpression node to check.
  @returns {boolean} Whether or not the node is a binary negating of `.indexOf()` method calling.