diff --git a/spec-main/api-process-spec.ts b/spec-main/api-process-spec.ts
new file mode 100644
index 00000000000..cb0fe9bede5
--- /dev/null
+++ b/spec-main/api-process-spec.ts
@@ -0,0 +1,124 @@
+import * as fs from 'fs';
+import * as path from 'path';
+import { expect } from 'chai';
+import { BrowserWindow } from 'electron';
+import { defer, ifdescribe } from './spec-helpers';
+import { app } from 'electron/main';
+import { closeAllWindows } from './window-helpers';
+
+describe('renderer process module', () => {
+  let w: BrowserWindow;
+  before(async () => {
+    w = new BrowserWindow({ show: false, webPreferences: { nodeIntegration: true, contextIsolation: false } });
+    await w.loadURL('about:blank');
+  });
+  after(closeAllWindows);
+
+  describe('process.getCreationTime()', () => {
+    it('returns a creation time', async () => {
+      const creationTime = await w.webContents.executeJavaScript('process.getCreationTime()');
+      expect(creationTime).to.be.a('number').and.be.at.least(0);
+    });
+  });
+
+  describe('process.getCPUUsage()', () => {
+    it('returns a cpu usage object', async () => {
+      const cpuUsage = await w.webContents.executeJavaScript('process.getCPUUsage()');
+      expect(cpuUsage.percentCPUUsage).to.be.a('number');
+      expect(cpuUsage.idleWakeupsPerSecond).to.be.a('number');
+    });
+  });
+
+  ifdescribe(process.platform !== 'darwin')('process.getIOCounters()', () => {
+    it('returns an io counters object', async () => {
+      const ioCounters = await w.webContents.executeJavaScript('process.getIOCounters()');
+      expect(ioCounters.readOperationCount).to.be.a('number');
+      expect(ioCounters.writeOperationCount).to.be.a('number');
+      expect(ioCounters.otherOperationCount).to.be.a('number');
+      expect(ioCounters.readTransferCount).to.be.a('number');
+      expect(ioCounters.writeTransferCount).to.be.a('number');
+      expect(ioCounters.otherTransferCount).to.be.a('number');
+    });
+  });
+
+  describe('process.getBlinkMemoryInfo()', () => {
+    it('returns blink memory information object', async () => {
+      const heapStats = await w.webContents.executeJavaScript('process.getBlinkMemoryInfo()');
+      expect(heapStats.allocated).to.be.a('number');
+      expect(heapStats.total).to.be.a('number');
+    });
+  });
+
+  describe('process.getProcessMemoryInfo()', () => {
+    it('resolves promise successfully with valid data', async () => {
+      const memoryInfo = await w.webContents.executeJavaScript('process.getProcessMemoryInfo()');
+      expect(memoryInfo).to.be.an('object');
+      if (process.platform === 'linux' || process.platform === 'win32') {
+        expect(memoryInfo.residentSet).to.be.a('number').greaterThan(0);
+      }
+      expect(memoryInfo.private).to.be.a('number').greaterThan(0);
+      // Shared bytes can be zero
+      expect(memoryInfo.shared).to.be.a('number').greaterThan(-1);
+    });
+  });
+
+  describe('process.getSystemMemoryInfo()', () => {
+    it('returns system memory info object', async () => {
+      const systemMemoryInfo = await w.webContents.executeJavaScript('process.getSystemMemoryInfo()');
+      expect(systemMemoryInfo.free).to.be.a('number');
+      expect(systemMemoryInfo.total).to.be.a('number');
+    });
+  });
+
+  describe('process.getSystemVersion()', () => {
+    it('returns a string', async () => {
+      const systemVersion = await w.webContents.executeJavaScript('process.getSystemVersion()');
+      expect(systemVersion).to.be.a('string');
+    });
+  });
+
+  describe('process.getHeapStatistics()', () => {
+    it('returns heap statistics object', async () => {
+      const heapStats = await w.webContents.executeJavaScript('process.getHeapStatistics()');
+      expect(heapStats.totalHeapSize).to.be.a('number');
+      expect(heapStats.totalHeapSizeExecutable).to.be.a('number');
+      expect(heapStats.totalPhysicalSize).to.be.a('number');
+      expect(heapStats.totalAvailableSize).to.be.a('number');
+      expect(heapStats.usedHeapSize).to.be.a('number');
+      expect(heapStats.heapSizeLimit).to.be.a('number');
+      expect(heapStats.mallocedMemory).to.be.a('number');
+      expect(heapStats.peakMallocedMemory).to.be.a('number');
+      expect(heapStats.doesZapGarbage).to.be.a('boolean');
+    });
+  });
+
+  describe('process.takeHeapSnapshot()', () => {
+    it('returns true on success', async () => {
+      const filePath = path.join(app.getPath('temp'), 'test.heapsnapshot');
+      defer(() => {
+        try {
+          fs.unlinkSync(filePath);
+        } catch (e) {
+          // ignore error
+        }
+      });
+
+      const success = await w.webContents.executeJavaScript(`process.takeHeapSnapshot(${JSON.stringify(filePath)})`);
+      expect(success).to.be.true();
+      const stats = fs.statSync(filePath);
+      expect(stats.size).not.to.be.equal(0);
+    });
+
+    it('returns false on failure', async () => {
+      const success = await w.webContents.executeJavaScript('process.takeHeapSnapshot("")');
+      expect(success).to.be.false();
+    });
+  });
+
+  describe('process.contextId', () => {
+    it('is a string', async () => {
+      const contextId = await w.webContents.executeJavaScript('process.contextId');
+      expect(contextId).to.be.a('string');
+    });
+  });
+});
diff --git a/spec/api-process-spec.js b/spec/api-process-spec.js
deleted file mode 100644
index 80291074132..00000000000
--- a/spec/api-process-spec.js
+++ /dev/null
@@ -1,124 +0,0 @@
-const { ipcRenderer } = require('electron');
-const fs = require('fs');
-const path = require('path');
-
-const { expect } = require('chai');
-
-describe('process module', () => {
-  describe('process.getCreationTime()', () => {
-    it('returns a creation time', () => {
-      const creationTime = process.getCreationTime();
-      expect(creationTime).to.be.a('number').and.be.at.least(0);
-    });
-  });
-
-  describe('process.getCPUUsage()', () => {
-    it('returns a cpu usage object', () => {
-      const cpuUsage = process.getCPUUsage();
-      expect(cpuUsage.percentCPUUsage).to.be.a('number');
-      expect(cpuUsage.idleWakeupsPerSecond).to.be.a('number');
-    });
-  });
-
-  describe('process.getIOCounters()', () => {
-    before(function () {
-      if (process.platform === 'darwin') {
-        this.skip();
-      }
-    });
-
-    it('returns an io counters object', () => {
-      const ioCounters = process.getIOCounters();
-      expect(ioCounters.readOperationCount).to.be.a('number');
-      expect(ioCounters.writeOperationCount).to.be.a('number');
-      expect(ioCounters.otherOperationCount).to.be.a('number');
-      expect(ioCounters.readTransferCount).to.be.a('number');
-      expect(ioCounters.writeTransferCount).to.be.a('number');
-      expect(ioCounters.otherTransferCount).to.be.a('number');
-    });
-  });
-
-  describe('process.getBlinkMemoryInfo()', () => {
-    it('returns blink memory information object', () => {
-      const heapStats = process.getBlinkMemoryInfo();
-      expect(heapStats.allocated).to.be.a('number');
-      expect(heapStats.total).to.be.a('number');
-    });
-  });
-
-  describe('process.getProcessMemoryInfo()', async () => {
-    it('resolves promise successfully with valid data', async () => {
-      const memoryInfo = await process.getProcessMemoryInfo();
-      expect(memoryInfo).to.be.an('object');
-      if (process.platform === 'linux' || process.platform === 'windows') {
-        expect(memoryInfo.residentSet).to.be.a('number').greaterThan(0);
-      }
-      expect(memoryInfo.private).to.be.a('number').greaterThan(0);
-      // Shared bytes can be zero
-      expect(memoryInfo.shared).to.be.a('number').greaterThan(-1);
-    });
-  });
-
-  describe('process.getSystemMemoryInfo()', () => {
-    it('returns system memory info object', () => {
-      const systemMemoryInfo = process.getSystemMemoryInfo();
-      expect(systemMemoryInfo.free).to.be.a('number');
-      expect(systemMemoryInfo.total).to.be.a('number');
-    });
-  });
-
-  describe('process.getSystemVersion()', () => {
-    it('returns a string', () => {
-      expect(process.getSystemVersion()).to.be.a('string');
-    });
-  });
-
-  describe('process.getHeapStatistics()', () => {
-    it('returns heap statistics object', () => {
-      const heapStats = process.getHeapStatistics();
-      expect(heapStats.totalHeapSize).to.be.a('number');
-      expect(heapStats.totalHeapSizeExecutable).to.be.a('number');
-      expect(heapStats.totalPhysicalSize).to.be.a('number');
-      expect(heapStats.totalAvailableSize).to.be.a('number');
-      expect(heapStats.usedHeapSize).to.be.a('number');
-      expect(heapStats.heapSizeLimit).to.be.a('number');
-      expect(heapStats.mallocedMemory).to.be.a('number');
-      expect(heapStats.peakMallocedMemory).to.be.a('number');
-      expect(heapStats.doesZapGarbage).to.be.a('boolean');
-    });
-  });
-
-  describe('process.takeHeapSnapshot()', () => {
-    it('returns true on success', async () => {
-      const filePath = path.join(await ipcRenderer.invoke('get-temp-dir'), 'test.heapsnapshot');
-
-      const cleanup = () => {
-        try {
-          fs.unlinkSync(filePath);
-        } catch (e) {
-          // ignore error
-        }
-      };
-
-      try {
-        const success = process.takeHeapSnapshot(filePath);
-        expect(success).to.be.true();
-        const stats = fs.statSync(filePath);
-        expect(stats.size).not.to.be.equal(0);
-      } finally {
-        cleanup();
-      }
-    });
-
-    it('returns false on failure', () => {
-      const success = process.takeHeapSnapshot('');
-      expect(success).to.be.false();
-    });
-  });
-
-  describe('process.contextId', () => {
-    it('is a string', () => {
-      expect(process.contextId).to.be.a('string');
-    });
-  });
-});