Use cross-spawn to help with Windows issues.

Fixes typegoose#180

Author: dominic-p

package.json

@@ -5,6 +5,7 @@
   "description": "In-memory MongoDB Server. Designed with testing in mind, the server will allow you to connect your favourite ODM or client library to the MongoDB Server and run integration tests isolated from each other.",
   "repository": "https://github.com/nodkz/mongodb-memory-server",
   "devDependencies": {
+    "@types/cross-spawn": "^6.0.0",
     "@types/decompress": "^4.2.3",
     "@types/dedent": "^0.7.0",
     "@types/find-cache-dir": "^2.0.0",

packages/mongodb-memory-server-core/package.json

@@ -25,6 +25,7 @@
   "homepage": "https://github.com/nodkz/mongodb-memory-server",
   "dependencies": {
     "camelcase": "^5.3.1",
+    "cross-spawn": "^6.0.5",
     "debug": "^4.1.1",
     "decompress": "^4.2.0",
     "dedent": "^0.7.0",

packages/mongodb-memory-server-core/src/util/MongoInstance.ts

@@ -1,4 +1,5 @@
-import { ChildProcess, spawn as spawnChild } from 'child_process';
+import { ChildProcess } from 'child_process';
+import { default as spawnChild } from 'cross-spawn';
 import path from 'path';
 import MongoBinary from './MongoBinary';
 import { MongoBinaryOpts } from './MongoBinary';
@@ -62,7 +63,7 @@ export default class MongoInstance {
         this.debug = console.log.bind(null);
       }
     } else {
-      this.debug = () => {};
+      this.debug = () => { };
     }
 
     // add instance's port to debug output

yarn.lock

@@ -1002,6 +1002,13 @@
   dependencies:
     "@types/node" "*"
 
+"@types/cross-spawn@^6.0.0":
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/@types/cross-spawn/-/cross-spawn-6.0.0.tgz#320aaf1d1a12979f1b84fe7a5590a7e860bf3a80"
+  integrity sha512-evp2ZGsFw9YKprDbg8ySgC9NA15g3YgiI8ANkGmKKvvi0P2aDGYLPxQIC5qfeKNUOe3TjABVGuah6omPRpIYhg==
+  dependencies:
+    "@types/node" "*"
+
 "@types/decompress@^4.2.3":
   version "4.2.3"
   resolved "https://registry.yarnpkg.com/@types/decompress/-/decompress-4.2.3.tgz#98eed48af80001038aa05690b2094915f296fe65"