标签：specified last depend 图片 desc sim tools erro esc
Command-line tools can help you with all sorts of tasks. This lesson covers the very basics of setting up a CLI tool in Node.js by creating your project with npm, setting up your bin script, and using CAC to parse a single argument.
Create a new project, change the "name" porp‘s value to "hi", then add a "bin" prop, so next time, when we invoke "hi", it will run the command in "bin".
package.json
{ "name": "hi", "version": "1.0.0", "description": "", "main": "index.js", "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "keywords": [], "author": "", "license": "ISC", "bin": "./index.js", "devDependencies": { "cac": "6.3.12" } }
Install:
npm i -D cac
Create index.js file:
#!/usr/bin/env node
‘ on the top of the file, then it knows should run in node env.#!/usr/bin/env node const cli = require(‘cac‘)(); cli.option(‘--type <type>‘, ‘Provide type, [date|foo]‘) // name is a required field cli.command(‘<name>‘, ‘Provide your name‘) .action((name, options) => { const {type} = options; if (type === ‘date‘) { console.log(`Hi ${name}, Today is ${new Date().toDateString()}`) } else if (type === ‘foo‘) { console.log(`Hi ${name}, you should take a rest!`) } else { console.log(`Hi ${name}, Good job!`) } }) cli.help() // Display version number when `-h` or `--help` appears cli.version(‘0.0.0‘) cli.parse()
Run:
[Tools] Create a Simple CLI Tool in Node.js with CAC
标签：specified last depend 图片 desc sim tools erro esc
原文地址：https://www.cnblogs.com/Answer1215/p/10220555.html
