Make addon context-aware.

spec/git-spec.js

@@ -6,6 +6,7 @@ const wrench = require('wrench')
 const temp = require('temp')
 const _ = require('underscore')
 const {it, fit, beforeEach} = require('./async-spec-helper-functions')
+const {Worker} = require('worker_threads')
 
 describe('git', () => {
   let repo
@@ -1138,6 +1139,35 @@ describe('git', () => {
   })
 })
 
+describe('Context Aware', () => {
+  it('should handle opening the same repository from different contexts', async () => {
+    // Based on it('returns the path to the .git directory')
+    let currentGitPath = path.join(path.dirname(__dirname), '.git/')
+    if (process.platform === 'win32') { currentGitPath = currentGitPath.replace(/\\/g, '/') }
+    const promises = [];
+    for (let i = 1; i <= 5; ++i) {
+      promises.push(new Promise((resolve, reject) => {
+        const worker = new Worker('./spec/worker.cjs');
+        let repositoryPath;
+        worker.on('message', function(message) {
+          repositoryPath = message;
+        });
+        worker.on('exit', function(code) {
+          if (code === 0) {
+            resolve(repositoryPath)
+          }
+          else {
+            reject(`Worker error ${code}`)
+          }
+        });
+      }))
+    }
+    const responses = await Promise.all(promises)
+    const c = currentGitPath;
+    expect(responses).toEqual([c, c, c, c, c])
+  });
+})
+
 function execCommands (commands, callback) {
   let command
   if (process.platform === 'win32') {

spec/worker.cjs

@@ -0,0 +1,6 @@
+const parentPort = require('worker_threads').parentPort
+
+const git = require('../src/git')
+
+const repositoryPath = git.open(__dirname).getPath()
+parentPort.postMessage(repositoryPath);

src/repository.cc

@@ -24,7 +24,7 @@
 #include <map>
 #include <utility>
 
-void Repository::Init(Local<Object> target) {
+NAN_MODULE_INIT(Repository::Init) {
   Nan::HandleScope scope;
   git_libgit2_init();
 
@@ -68,7 +68,7 @@ void Repository::Init(Local<Object> target) {
             Nan::GetFunction(newTemplate).ToLocalChecked());
 }
 
-NODE_MODULE(git, Repository::Init)
+NAN_MODULE_WORKER_ENABLED(git, Repository::Init)
 
 NAN_METHOD(Repository::New) {
   Nan::HandleScope scope;

src/repository.h

@@ -31,7 +31,7 @@ using namespace v8;  // NOLINT
 
 class Repository : public Nan::ObjectWrap {
  public:
-  static void Init(Local<Object> target);
+  static NAN_MODULE_INIT(Init);
 
  private:
   static NAN_METHOD(New);