我正在使用commander.js编写一个与API 交互的简单node.js 程序。所有调用都需要使用子命令。例如:
apicommand get
调用如下:
program
.version('1.0.0')
.command('get [accountId]')
.description('retrieves account info for the specified account')
.option('-v, --verbose', 'display extended logging information')
.action(getAccount);
我现在要做的是在apicommand
没有任何子命令的情况下调用时显示默认消息。就像在git
没有子命令的情况下调用一样:
MacBook-Air:Desktop username$ git
usage: git [--version] [--help] [-C <path>] [-c name=value]
[--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
[-p | --paginate | --no-pager] [--no-replace-objects] [--bare]
[--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
<command> [<args>]
These are common Git commands used in various situations:
start a working area (see also: git help tutorial)
clone Clone a repository into a new directory
init Create an empty Git repository or reinitialize an existing one
...