Add an isNode module

packages/is-node/.gitignore

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+*.js
+*.js.map
+*.d.ts

packages/is-node/__tests__/index.ts

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+import {isNode} from '../';
+
+describe('isNode', () => {
+    it('should return true when running in a Node.JS environment', () => {
+        // jest only runs in node, so this will always be true
+        expect(isNode()).toBe(true);
+    });
+
+    it('should return false when the global process object does not exist', () => {
+        const process = global.process;
+        try {
+            delete global.process;
+            expect(isNode()).toBe(false);
+        } finally {
+            global.process = process;
+        }
+    });
+});

packages/is-node/index.ts

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+export function isNode(): boolean {
+    return Object.prototype.toString.call(typeof process !== 'undefined' ? process : 0) === '[object process]';
+}

packages/is-node/package.json

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+{
+  "name": "@aws/is-node",
+  "private": true,
+  "version": "0.0.1",
+  "description": "Provides a function for detecting if the host environment is Node.JS",
+  "scripts": {
+    "pretest": "tsc",
+    "test": "jest"
+  },
+  "author": "[email protected]",
+  "license": "UNLICENSED",
+  "main": "index.js",
+  "devDependencies": {
+    "@types/jest": "^19.2.2",
+    "@types/node": "^7.0.12",
+    "jest": "^19.0.2",
+    "typescript": "^2.3"
+  }
+}

packages/is-node/tsconfig.json

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+{
+  "compilerOptions": {
+     "target": "es5",
+     "module": "commonjs",
+     "declaration": true,
+     "strict": true
+  }
+}