a babel plugin, insert console.log into function defination

module.exports = function ({ parse }){
    return {
        visitor: {
            FunctionDeclaration(path){
                const node = path.node;
                const functionName = node.id.name;
                const consoleLogNode = parse(`console.log(${functionName})`);
                path.get("body").unshiftContainer("body", consoleLogNode.program.body[0]);
            },
        },
    };
};