Merge pull request #58 from js-spider/master

add uninstall hooks #57

.gitignore

@@ -6,7 +6,7 @@ lib-cov
 *.out
 *.pid
 *.gz
-
+.idea/**
 pids
 logs
 results

cli.js

@@ -113,7 +113,7 @@ program
 
 program
     .command('help', { isDefault: true })
-    .description('Print this help')
+    .description('Print this help \n if you want to clear the NRM configuration when uninstall you can execute "npm uninstall nrm -g -C or npm uninstall nrm -g --clean"')
     .action(function() {
         program.outputHelp();
     });
@@ -555,3 +555,15 @@ function equalsIgnoreCase(str1, str2) {
         return !str1 && !str2;
     }
 }
+
+function cleanRegistry(){
+    setCustomRegistry('',function(err){
+        if (err) exit(err);
+        onUse('npm')
+    })
+}
+
+module.exports = {
+    cleanRegistry,
+    errExit: exit
+}

hooks.js

@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+
+const { cleanRegistry }  = require('./cli')
+
+function preuninstall(){
+  if(ifNeedClean()){
+    console.log('preuninstall run success : clean .nrmrc info')
+    return cleanRegistry();
+  };
+  console.log('preuninstall run success : keep .nrmrc info')
+  process.exit();
+}
+
+function ifNeedClean(){
+  if(process.env.npm_config_clean){
+    return true
+  }else{
+    const envArgv = process.env.npm_config_argv || '{"original":[]}';
+    const envOriginal = JSON.parse(envArgv).original;
+    return envOriginal.includes('-C')
+  }
+}
+
+function isLocalDebug(argv){
+  let debugTarget = null;
+  argv.forEach(item=>{
+    // use node hooks.js --LocalDebugging=preuninstall
+    if(item.startsWith('--LocalDebugging=')){
+      debugTarget = item.split('=')[1]
+    }
+  })
+  return debugTarget;
+}
+
+
+function run (argv) {
+  const target = isLocalDebug(argv) || process.env.npm_lifecycle_event;
+  switch(target){
+    case 'preuninstall':
+        preuninstall(argv);break;
+    default: process.exit(0)
+  }
+}
+
+run(process.argv.slice(2));