Function validateComponentName

vue.js:1974–1988

(name)

    //验证组件名称 必须是大小写，并且是-横杆
    function validateComponentName(name) {
        if (!/^[a-zA-Z][\w-]*$/.test(name)) {
            warn(
                'Invalid component name: "' + name + '". Component names ' +
                'can only contain alphanumeric characters and the hyphen, ' +
                'and must start with a letter.'
            );
        }
        if (isBuiltInTag(name) || config.isReservedTag(name)) {
            warn(
                'Do not use built-in or reserved HTML elements as component ' +
                'id: ' + name
            );
        }
    }

    /**
     * Ensure all props option syntax are normalized into the