Fix: Add support for node_modules outside of package directoy (npm workspaces for example) and improve examples testing

Author: doteric

example/circular.ts

@@ -0,0 +1,58 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`examples "basic-multi" packages correctly 1`] = `
+Object {
+  "dependencies": Object {},
+  "main": "index.js",
+  "type": "module",
+}
+`;
+
+exports[`examples "basic-multi" packages correctly 2`] = `
+Object {
+  "dependencies": Object {},
+  "main": "index.js",
+  "type": "module",
+}
+`;
+
+exports[`examples "basic-single" packages correctly 1`] = `
+Object {
+  "dependencies": Object {},
+  "main": "index.js",
+  "type": "module",
+}
+`;
+
+exports[`examples "circular-dependency" packages correctly 1`] = `
+Object {
+  "dependencies": Object {},
+  "main": "index.js",
+  "type": "module",
+}
+`;
+
+exports[`examples "mjs-extension" packages correctly 1`] = `
+Object {
+  "dependencies": Object {},
+  "main": "index.mjs",
+}
+`;
+
+exports[`examples "module-splitting" packages correctly 1`] = `
+Object {
+  "dependencies": Object {},
+  "main": "index.js",
+  "type": "module",
+}
+`;
+
+exports[`examples "module-splitting" packages correctly 2`] = `
+Object {
+  "dependencies": Object {
+    "rimraf": "3.0.2",
+  },
+  "main": "index.js",
+  "type": "module",
+}
+`;

example/example.ts

@@ -0,0 +1,23 @@
+{
+  "type": "module",
+  "scripts": {
+    "prepackage": "tsc --noEmit",
+    "package": "funpack"
+  },
+  "funpack": {
+    "settings": {
+      "packageFieldsToCopy": [
+        "version",
+        "type"
+      ],
+      "zip": true
+    },
+    "functions": {
+      "functionOne": "./src/functionOne/main.ts",
+      "functionTwo": "./src/functionTwo/main.ts"
+    }
+  },
+  "devDependencies": {
+    "funpack": "file:../.."
+  }
+}

example/second.ts

@@ -0,0 +1,7 @@
+export const handler = (event: unknown) => {
+  console.log('Hello world!', 'event:', event);
+
+  return {
+    status: 200,
+  };
+};

example/third.ts

@@ -0,0 +1,7 @@
+const unused = () => {
+  console.log(
+    'This is an unused function that should not change the end build size!'
+  );
+};
+
+export default unused;

example/unused.ts

@@ -0,0 +1,7 @@
+export const handler = (event: unknown) => {
+  console.log('Hello world!', 'event:', event);
+
+  return {
+    status: 200,
+  };
+};