ionic3 自定义插件 添加进项目失败的解决方式

本篇主要解决如下问题：

Error: Invalid Plugin! needs a valid package.json

pkg is not defined

终端切换至自定义插件文件夹的位置：执行如下命令

1. npm init

This utility will walk you through creating a package.json file.

It only covers the most common items, and tries to guess sensible defaults.

See `npm help json` for definitive documentation on these fields

and exactly what they do.

Use `npm install --save` afterwards to install a package and

save it as a dependency in the package.json file.

Press ^C at any time to quit.

name: ()

2.输入你的自定义插件名称，不能含大写字母。

3.接下来要填写的信息可依次回车。

version: (1.0.0)

description:

entry point: (index.js)

test command:

git repository:

keywords:

author:

license: (ISC)

About to write to /Users/.. ./pluginName/package.json:

{

"name": "",

"version": "1.0.0",

"description": "",

"main": "index.js",

"scripts": {

"test": "echo \"Error: no test specified\" && exit 1"

},

"author": "",

"license": "ISC"

}

Is this ok? (yes) 

4.敲入y 即可。 

备注，也可以手动创建package.json文件，按照如上(最外层{})格式。未验证。

当前项目环境如下：

xxxxxx: plugman -v

1.5.1

cli packages:(/usr/local/lib/node_modules)

@ionic/cli-utils:1.19.0

ionic(Ionic CLI):3.19.0

global packages:

cordova(Cordova CLI):7.0.1

local packages:

@ionic/app-scripts :3.1.4

Cordova Platforms:android 6.2.3 ios 4.4.0

Ionic Framework:ionic-angular 3.9.2

System:

ios-deploy :1.9.2

Node:v6.11.0

npm:3.10.10

OS:macOS High Sierra

Xcode:Xcode 9.1 Build version 9B55

Environment Variables:

ANDROID_HOME :not set

Misc:

backend :pro