RN npm私库本地debug调试

npm link

一般的node工程，官方提供npm link的方式本地调试。具体步骤如下： 我有私库rn-lib 和工程rn-demo

在私库下面执行npm link，将全局的rn-lib指向本地私库
➜  rn-lib git:(develop_ts_common) ✗ npm link  
/usr/local/lib/node_modules/rn-lib -> /Users/msh/Desktop/rn-lib

在rn-demo下面执行npm link rn-lib，将node_modules的rn-lib指向全局
➜  rn-demo git:(master) ✗ npm link rn-lib
/Users/msh/Desktop/rn-demo/node_modules/rn-lib -> /usr/local/lib/node_modules/rn-lib -> /Users/msh/Desktop/rn-lib

RN 不能使用npm link

error: bundling failed: Error: Expected path `/Users/jgallaso/Projects/aerogear/aerogear-react-native-core/index.js` to be relative to one of the project roots

metro-bundler-error-expected-path-to-be-relative-to-one-of-the-project-root

install-local 替代 npm link

https://www.npmjs.com/package/install-local

我将rn-demo 、rn-lib放在一个目录下面。

➜  rn-demo git:(master) ✗ install-local --save ../rn-lib 
[install-local] installing into rn-demo
[install-local] rn-demo installed
+ rn-lib@1.0.0-beta0
updated 1 package in 6.556s

[install-local] Done

原理是：将../rn-lib下面的代码copy一份到rn-demo/node_modules/rn-lib

使用注意：

1. install-local要在npm install后面执行。
2. 每次改动代码要在原来的位置，不要在node_modules下面，改完要重新执行install-local