Kill testrpc w/ tree-kill

lib/app.js

@@ -5,6 +5,7 @@ const childprocess = require('child_process');
 const readline = require('readline');
 const reqCwd = require('req-cwd');
 const istanbul = require('istanbul');
+const treeKill = require('tree-kill');
 const getInstrumentedVersion = require('./instrumentSolidity.js');
 const CoverageMap = require('./coverageMap.js');
 const defaultTruffleConfig = require('./truffleConfig.js');
@@ -424,25 +425,33 @@ class App {
    * @param  {String} err error message
    */
   cleanUp(err) {
-    this.log('Cleaning up...');
+    const self = this;
+    function exit(err){
+      if (err) {
+        self.log(`${err}\nExiting without generating coverage...`);
+        process.exit(1);
+      } else if (self.testsErrored) {
+        self.log('Some truffle tests failed while running coverage');
+        process.exit(1);
+      } else {
+        self.log('Done.');
+        process.exit(0);
+      }
+    }
+
+    self.log('Cleaning up...');
     shell.config.silent = true;
-    shell.rm('-Rf', this.coverageDir);
+    shell.rm('-Rf', self.coverageDir);
     shell.rm('./allFiredEvents');
     shell.rm('./scTopics');
-    if (this.testrpcProcess) {
-      this.testrpcProcess.stdout.destroy();
-      this.testrpcProcess.stderr.destroy();
-      this.testrpcProcess.kill();
-    }
 
-    if (err) {
-      this.log(`${err}\nExiting without generating coverage...`);
-      process.exit(1);
-    } else if (this.testsErrored) {
-      this.log('Some truffle tests failed while running coverage');
-      process.exit(1);
+    if (self.testrpcProcess) {
+      treeKill(self.testrpcProcess.pid, function(killError){
+        self.log(`Shutting down testrpc-sc (pid ${self.testrpcProcess.pid})`)
+        exit(err)
+      });
     } else {
-      process.exit(0);
+      exit(err);
     }
   }
 }

package-lock.json

@@ -5714,6 +5714,11 @@
         "punycode": "1.4.1"
       }
     },
+    "tree-kill": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.0.tgz",
+      "integrity": "sha512-DlX6dR0lOIRDFxI0mjL9IYg6OTncLm/Zt+JiBhE5OlFcAR8yc9S7FFXU9so0oda47frdM/JFsk7UjNt9vscKcg=="
+    },
     "trim-right": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz",

package.json

@@ -29,6 +29,7 @@
     "shelljs": "^0.7.4",
     "sol-explore": "^1.6.2",
     "solidity-parser-sc": "0.4.8",
+    "tree-kill": "^1.2.0",
     "web3": "^0.18.4"
   },
   "devDependencies": {