diff --git a/doc/addon-tools.md b/doc/addon-tools.md
index 23cebf0..b6848d7 100644
--- a/doc/addon-tools.md
+++ b/doc/addon-tools.md
@@ -3,6 +3,7 @@
 There is a C++ header file, `addon-tools.hpp`, shipped with this package. It
 introduces several useful macros and utilities. Also it includes **Napi**
 implicitly, so you can replace:
+
 ```
 #include <napi.h>
 ```
diff --git a/doc/class-wrapping.md b/doc/class-wrapping.md
index 5051686..6e15b95 100644
--- a/doc/class-wrapping.md
+++ b/doc/class-wrapping.md
@@ -31,7 +31,6 @@ public:
 	JS_DECLARE_METHOD(ClassName, ClassName, destroy);
 	
 	bool _isDestroyed;
-	
 };
 ```
 
@@ -62,13 +61,10 @@ void ClassName::init(Napi::Env env, Napi::Object exports) {
 }
 
 ClassName::ClassName(const Napi::CallbackInfo &info) { NAPI_ENV;
-	
 	super(info);
-	
 	_isDestroyed = false;
 	
 	// ...
-	
 }
 
 ClassName::~ClassName() {
diff --git a/doc/snippets.md b/doc/snippets.md
index d4af7ec..00bff00 100644
--- a/doc/snippets.md
+++ b/doc/snippets.md
@@ -73,12 +73,12 @@ directory. E.g. on Windows it will be **bin-windows**.
 	```
 
 
-Publishing binaries is done by attaching a zipped platform folder to the Github
+Publishing binaries is done by attaching a zipped platform folder to the GitHub
 release. Zip file must NOT contain platform folder as a subfolder, but rather
 contain the final binaries. The tag of the release should be the same as in
 `npm_package_config_install` - that is the way installer will find it.
 
-> NOTE: You can publish your binaries to anywhere, not necessarily Github.
+> NOTE: You can publish your binaries to anywhere, not necessarily GitHub.
 Just tweak **YOUR install.js** script as appropriate. The only limitation
 from **Addon Tools** is that it should be a zipped set of files/folders.
 
@@ -87,9 +87,9 @@ from **Addon Tools** is that it should be a zipped set of files/folders.
 
 ```
 	'variables': {
-		'bin'          : '<!(node -p "require(\'addon-tools-raub\').bin")',
-		'DEPS_include' : '<!(node -p "require(\'DEPS\').include")',
-		'DEPS_bin'     : '<!(node -p "require(\'DEPS\').bin")',
+		'bin': '<!(node -p "require(\'addon-tools-raub\').bin")',
+		'DEPS_include': '<!(node -p "require(\'DEPS\').include")',
+		'DEPS_bin': '<!(node -p "require(\'DEPS\').bin")',
 	},
 ```
 
diff --git a/index.js b/index.js
index 518f88e..966e280 100644
--- a/index.js
+++ b/index.js
@@ -1,12 +1,18 @@
 'use strict';
 
-const napi = require('node-addon-api');
+let napi = null;
+try {
+	napi = require('node-addon-api');
+} catch (ex) {
+	console.error('To build addons, `node-addon-api` module is required.');
+	process.exit(1);
+}
 
 
 const platformNames = {
-	win32  : 'windows',
-	linux  : 'linux',
-	darwin : 'osx',
+	win32: 'windows',
+	linux: 'linux',
+	darwin: 'osx',
 };
 
 const platformName = platformNames[process.platform];
@@ -27,7 +33,7 @@ const includePath = `${napiInclude} ${thisInclude}`;
 const paths = dir => {
 	dir = dir.replace(/\\/g, '/');
 	
-	const bin     = `${dir}/bin-${platformName}`;
+	const bin = `${dir}/bin-${platformName}`;
 	const include = `${dir}/include`;
 	
 	if (isWindows) {
@@ -40,7 +46,7 @@ const paths = dir => {
 
 module.exports = {
 	paths,
-	bin      : `bin-${platformName}`,
-	platform : platformName,
-	include  : includePath,
+	bin: `bin-${platformName}`,
+	platform: platformName,
+	include: includePath,
 };
diff --git a/install.js b/install.js
index 48f6a37..52f8d60 100644
--- a/install.js
+++ b/install.js
@@ -1,10 +1,16 @@
 'use strict';
 
-
 const https = require('https');
-const http  = require('http');
-const fs  = require('fs');
-const AdmZip = require('adm-zip');
+const http = require('http');
+const fs = require('fs');
+
+let AdmZip = null;
+try {
+	AdmZip = require('adm-zip');
+} catch (ex) {
+	console.error('The `install` script requires `adm-zip` module to be installed.');
+	process.exit(1);
+}
 
 const { bin, platform } = require('.');
 const { mkdir, rm } = require('./utils');
diff --git a/package.json b/package.json
index 05a6e58..8acddfa 100644
--- a/package.json
+++ b/package.json
@@ -70,6 +70,10 @@
 		"adm-zip": "^0.5.9",
 		"node-addon-api": "^5.0.0"
 	},
+	"peerDependenciesMeta": {
+		"adm-zip": { "optional": true },
+		"node-addon-api": { "optional": true }
+	},
 	"devDependencies": {
 		"adm-zip": "^0.5.9",
 		"eslint-plugin-jest": "^27.0.4",