diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..5ac2613
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,52 @@
+/src
+
+# Bootstrapping #
+#################
+/node_modules
+/public/hot
+/public/storage
+/storage/*.key
+/vendor
+.env
+.env.ini
+.env.backup
+.phpunit.result.cache
+Homestead.json
+Homestead.yaml
+npm-debug.log
+yarn-error.log
+public/robots.txt
+
+# OS generated files #
+######################
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+Icon?
+ehthumbs.db
+Thumbs.db
+.directory
+
+# Tool specific files #
+#######################
+# vim
+*~
+*.swp
+*.swo
+# sublime text & textmate
+*.sublime-*
+*.stTheme.cache
+*.tmlanguage.cache
+*.tmPreferences.cache
+# Eclipse
+.settings/*
+# JetBrains, aka PHPStorm, IntelliJ IDEA
+.idea/*
+# NetBeans
+nbproject/*
+# Visual Studio Code
+.vscode
+# Sass preprocessor
+.sass-cache/
diff --git a/package.json b/package.json
index 64db716..87bd638 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,16 @@
 {
 	"name": "reflect-client",
-	"version": "1.0.0",
+	"version": "1.1.0",
 	"main": "build/Reflect.js",
+	"type": "module",
+	"exports": {
+		".": {
+			"import": {
+				"types": "./src/Reflect.ts",
+				"default": "./build/Reflect.js"
+			}
+		}
+	},
 	"devDependencies": {
 		"typescript": "^5.2.2"
 	}
diff --git a/src/Reflect.ts b/src/Reflect.ts
index 1b6a865..f424c76 100644
--- a/src/Reflect.ts
+++ b/src/Reflect.ts
@@ -1,4 +1,7 @@
-import { Method } from "./Method";
+import { Method } from "./Method.js";
+
+// Export Method as importable directly from the Reflect.js ESM
+export { Method };
 
 // Connect to a Reflect API instance over HTTP
 export default class Client {
@@ -16,7 +19,12 @@ export default class Client {
 
 	// Set API key to use for all requests
 	private setApiKey(key: string): void {
-		this.headers["Authentication"] = `Bearer ${key}`;
+		this.headers["Authorization"] = `Bearer ${key}`;
+	}
+
+	// Get fully qualified URL to endpoint
+	private getEndpoint(endpoint: string): string {
+		return this.url + endpoint;
 	}
 
 	// Call a Reflect API endpoint with method and optional payload
@@ -32,6 +40,6 @@ export default class Client {
 		}
 
 		// Fetch and return Response object
-		return await fetch(endpoint, options);
+		return await fetch(this.getEndpoint(endpoint), options);
 	}
 }
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index f74e32a..cb59621 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,9 +2,7 @@
 	"compilerOptions": {
 		"emitDecoratorMetadata": true,
 		"experimentalDecorators": true,
-		"module": "amd",
-		"target": "ES6",
-		"rootDir": "./src",
-		"outFile": "./build/Reflect.js"
+		"module": "NodeNext",
+		"outDir": "./build"
 	}
 }
\ No newline at end of file