diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..27ce451
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1,2 @@
+node_modules
+lib/migrationTemplates/
diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 0000000..371776a
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,35 @@
+{
+	"extends": "airbnb-base",
+	"parserOptions": {
+		"ecmaVersion": 6,
+		"sourceType": "script"
+	},
+	"rules": {
+		"comma-dangle": ["error", "never"],
+		"object-curly-spacing": ["error", "never"],
+		"indent": ["error", "tab"],
+		"no-tabs": 0,
+		"arrow-body-style": ["off"],
+		"arrow-parens": ["error", "always"],
+		"no-underscore-dangle": ["off"],
+		"camelcase": ["error", {
+			"properties": "never"
+		}],
+		"max-len": ["error", {
+			"code": 80,
+			"tabWidth": 1,
+			"ignoreTemplateLiterals": true
+		}],
+		"function-paren-newline": ["error", "consistent"],
+		"class-methods-use-this": [0],
+		"global-require": ["off"],
+		"prefer-destructuring": ["off"],
+		"strict": ["error", "global"],
+		"no-plusplus": ["error", {"allowForLoopAfterthoughts": true}],
+		"no-else-return": ["off"],
+		"no-lonely-if": ["off"],
+		"no-param-reassign": ["off"],
+		"consistent-return": ["off"],
+		"prefer-rest-params": ["off"]
+	}
+}
diff --git a/.npmignore b/.npmignore
index b154a33..ed535ee 100644
--- a/.npmignore
+++ b/.npmignore
@@ -5,3 +5,5 @@ coverage/
 .npmrc
 .travis.yml
 .nycrc
+.eslintignore
+.eslintrc.json
diff --git a/.nycrc b/.nycrc
index 4f27f70..2a939a9 100644
--- a/.nycrc
+++ b/.nycrc
@@ -7,7 +7,6 @@
 		"testUtils/**",
 		"tap-snapshots/**",
 		"coverage/**",
-		"migrations/**",
-		"lib/migrationTemplate.js"
+		"migrations/**"
 	]
-}
\ No newline at end of file
+}
diff --git a/.travis.yml b/.travis.yml
index af15d06..8fc105a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,6 +25,15 @@ before_script:
   - npm install mongodb@${MONGODB_DRIVER_VERSION}
 
 script:
+    - >
+      nodeVersionMajor=`node --version | grep -Eo 'v[0-9]+' | sed 's/v//'`;
+
+      if [ $nodeVersionMajor -ge 10 ]; then
+        npm run lint
+      else
+        echo "*** Do not lint for node.js < 10 builds ($nodeVersionMajor)";
+      fi;
+
     - >
       nodeVersionMajor=`node --version | grep -Eo 'v[0-9]+' | sed 's/v//'`;
 
diff --git a/README.md b/README.md
index 1bc8f10..9bf5fbf 100644
--- a/README.md
+++ b/README.md
@@ -7,11 +7,34 @@ All executed migrations names will be stored at `_migrations` collection in the
 current database. Object with following properties will be passed to `migrate`
 and `rollback` functions:
 
-* `db` - instance of [mongodb native db](http://mongodb.github.io/node-mongodb-native/api-generated/db.html)
-* `dropIndexIfExists` function(collection, index, callback) - helper function
+*Please note* that mainstream mongodb adapter version (>= 1.x) requires
+east >= 1.x, for using adapter with older east versions (prior to 1.x) please
+use mongodb adapter version < 1.x.
+
+* `db` - instance of [mongodb native db](http://mongodb.github.io/node-mongodb-native/3.4/api/Db.html)
+* `dropIndexIfExists` function(collection, index, [callback]) - helper function
 which can be used for dropping index in safe way (contrasting to 
-`collection.dropIndex` which throws an error if index doesn't exist).
+`collection.dropIndex` which throws an error if index doesn't exist). This
+function returns promise and can be used that way instead of providing
+callback.
+
+east mongo package also provides following migration templates:
+
+* [lib/migrationTemplates/promises.js](lib/migrationTemplates/promises.js) -
+default migration template, uses built-in `Promise` in `migrate`,
+`rollback` functions.
+* [lib/migrationTemplates/async.js](lib/migrationTemplates/async.js) -
+migration template that uses async functions to describe `migrate`,
+`rollback` functions.
 
+Default migration template will be used if `template` is not set. To get path
+of another template `require.resolve` could be used, e.g. at `.eastrc`:
+
+```js
+	module.exports = {
+		template: require.resolve('east-mongo/lib/migrationTemplates/async.js')
+	}
+```
 
 [![Npm version](https://img.shields.io/npm/v/east-mongo.svg)](https://www.npmjs.org/package/east-mongo)
 [![Build Status](https://travis-ci.org/okv/east-mongo.svg?branch=master)](https://travis-ci.org/okv/east-mongo)
@@ -19,10 +42,17 @@ which can be used for dropping index in safe way (contrasting to
 [![Known Vulnerabilities](https://snyk.io/test/npm/east-mongo/badge.svg)](https://snyk.io/test/npm/east-mongo)
 
 
+## Node.js compatibility
+
+east mongo requires node.js >= 4 to work.
+
 ## Installation
 
+mongodb adapter requires `mongodb` package as peer dependency (versions 2.x and
+3.x are supported), so you should install it manually along side with east:
+
 ```sh
-npm install east east-mongo
+npm install east east-mongo mongodb
 ```
 
 alternatively you could install it globally
diff --git a/lib/adapter.js b/lib/adapter.js
index 376e258..2df40f9 100644
--- a/lib/adapter.js
+++ b/lib/adapter.js
@@ -1,9 +1,11 @@
 'use strict';
 
-var MongoClient = require('mongodb').MongoClient,
-	path = require('path'),
-	mongodbUri = require('mongodb-uri'),
-	helpers = require('./helpers');
+const MongoClient = require('mongodb').MongoClient;
+const mongodbPackageJson = require('mongodb/package.json');
+const path = require('path');
+const helpers = require('./helpers');
+
+const mongodbMajor = Number(mongodbPackageJson.version.split('.')[0]);
 
 function Adapter(params) {
 	this.params = params || {};
@@ -15,77 +17,66 @@ function Adapter(params) {
 	this.helpers = helpers;
 }
 
-Adapter.prototype.getTemplatePath = function() {
-	return path.join(__dirname, 'migrationTemplate.js');
+Adapter.prototype.getTemplatePath = function getTemplatePath() {
+	return path.join(__dirname, 'migrationTemplates', 'promises.js');
 };
 
-// mongodb driver 2.x passes `db`, 3.x passes `client` to the
-// `MongoClient.connect` callback this method sets clitnt and db
-// parsed from this polymorphic parameter
-Adapter.prototype._setDbAndClient = function(dbOrClient) {
-	if (dbOrClient.collection) {
-		this.client = null;
+// mongodb driver 2.x returns `db`, 3.x returns `client` as a result of
+// `MongoClient.connect`, this method sets client and db parsed from that
+// polymorphic result
+Adapter.prototype._setDbAndClient = function _setDbAndClient(connectResult) {
+	if (mongodbMajor > 2) {
+		this.client = connectResult;
 
-		this.db = dbOrClient;
+		// `db` without args gets db from uri ("test" if no db at uri)
+		this.db = this.client.db();
 	} else {
-		this.client = dbOrClient;
-
-		var parsedUrl = mongodbUri.parse(this.params.url);
-		var dbName = parsedUrl.database || 'admin';
+		this.client = null;
 
-		this.db = this.client.db(dbName);
+		// there db name from uri ("admin" if no db at uri)
+		this.db = connectResult;
 	}
 };
 
-Adapter.prototype.connect = function(callback) {
-	var self = this;
-
-	MongoClient.connect(
-		self.params.url,
-		self.params.options || {},
-		function(err, dbOrClient) {
-			if (err) {
-				return callback(err);
-			}
-
-			self._setDbAndClient(dbOrClient);
-
-			self.collection = self.db.collection('_migrations');
-
-			callback(null, {
-				db: self.db,
-				dropIndexIfExists: self.helpers.dropIndexIfExists
-			});
-		}
-	);
+Adapter.prototype.connect = function connect() {
+	return Promise.resolve()
+		.then(() => MongoClient.connect(this.params.url, this.params.options))
+		.then((connectResult) => {
+			this._setDbAndClient(connectResult);
+			this.collection = this.db.collection('_migrations');
+
+			return {
+				db: this.db,
+				dropIndexIfExists: this.helpers.dropIndexIfExists
+			};
+		});
 };
 
-Adapter.prototype.disconnect = function(callback) {
+Adapter.prototype.disconnect = function disconnect() {
 	if (this.client) {
-		this.client.close(callback);
+		return this.client.close();
 	} else if (this.db) {
-		this.db.close(callback);
+		return this.db.close();
 	} else {
-		callback();
+		return Promise.resolve();
 	}
 };
 
-Adapter.prototype.getExecutedMigrationNames = function(callback) {
-	this.collection.find({}).toArray(function(err, docs) {
-		if (err) {
-			return callback(err);
-		}
-
-		callback(null, docs.map(function(doc) { return doc._id; }));
-	});
-};
+Adapter.prototype.getExecutedMigrationNames =
+	function getExecutedMigrationNames() {
+		return Promise.resolve()
+			.then(() => this.collection.find({}).toArray())
+			.then((docs) => {
+				return docs.map((doc) => doc._id);
+			});
+	};
 
-Adapter.prototype.markExecuted = function(name, callback) {
-	this.collection.replaceOne({_id: name}, {_id: name}, {upsert: true}, callback);
+Adapter.prototype.markExecuted = function markExecuted(name) {
+	return this.collection.replaceOne({_id: name}, {_id: name}, {upsert: true});
 };
 
-Adapter.prototype.unmarkExecuted = function(name, callback) {
-	this.collection.deleteOne({_id: name}, callback);
+Adapter.prototype.unmarkExecuted = function unmarkExecuted(name) {
+	return this.collection.deleteOne({_id: name});
 };
 
 module.exports = Adapter;
diff --git a/lib/helpers.js b/lib/helpers.js
index 5b1addf..5513d52 100644
--- a/lib/helpers.js
+++ b/lib/helpers.js
@@ -1,22 +1,33 @@
 'use strict';
 
-exports.dropIndexIfExists = function(collection, index, callback) {
-	var indexName = '';
-	// convert object to string coz `indexExists` don't recognize objects
-	if (typeof index === 'object') {
-		for (var key in index) {
-			indexName += '_' + key + '_' + index[key];
-		}
-		indexName = indexName.replace(/^_/, '');
-	} else {
-		indexName = index;
-	}
-	collection.indexExists(indexName, function(err, exist) {
-		if (err) {callback(err); return;}
-		if (exist) {
-			collection.dropIndex(indexName, callback);
-		} else {
-			callback();
-		}
-	});
-};
+exports.dropIndexIfExists =
+	function dropIndexIfExists(collection, index, callback) {
+		let indexName = '';
+
+		return Promise.resolve()
+			.then(() => {
+				// convert object to string coz `indexExists` doesn't`
+				// recognize objects
+				if (typeof index === 'object') {
+					Object.keys(index).forEach((key) => {
+						indexName += `_${key}_${index[key]}`;
+					});
+
+					indexName = indexName.replace(/^_/, '');
+				} else {
+					indexName = index;
+				}
+
+				return collection.indexExists(indexName);
+			})
+			.then((indexExist) => {
+				if (indexExist) {
+					return collection.dropIndex(indexName);
+				}
+			})
+			.then(() => {
+				if (typeof callback === 'function') {
+					callback();
+				}
+			});
+	};
diff --git a/lib/index.js b/lib/index.js
index f229c9b..b1219fc 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -1 +1,3 @@
+'use strict';
+
 module.exports = require('./adapter');
diff --git a/lib/migrationTemplate.js b/lib/migrationTemplate.js
deleted file mode 100644
index 9f704bf..0000000
--- a/lib/migrationTemplate.js
+++ /dev/null
@@ -1,10 +0,0 @@
-
-exports.migrate = function(client, done) {
-	var db = client.db;
-	done();
-};
-
-exports.rollback = function(client, done) {
-	var db = client.db;
-	done();
-};
diff --git a/lib/migrationTemplates/async.js b/lib/migrationTemplates/async.js
new file mode 100644
index 0000000..d4a5ce3
--- /dev/null
+++ b/lib/migrationTemplates/async.js
@@ -0,0 +1,7 @@
+exports.tags = [];
+
+exports.migrate = async ({db}) => {
+};
+
+exports.rollback = async ({db}) => {
+};
diff --git a/lib/migrationTemplates/promises.js b/lib/migrationTemplates/promises.js
new file mode 100644
index 0000000..d4d9271
--- /dev/null
+++ b/lib/migrationTemplates/promises.js
@@ -0,0 +1,13 @@
+exports.tags = [];
+
+exports.migrate = function(params) {
+	const db = params.db;
+
+	return Promise.resolve();
+};
+
+exports.rollback = function(params) {
+	const db = params.db;
+
+	return Promise.resolve();
+};
diff --git a/package-lock.json b/package-lock.json
index 68c40c4..6d41ff1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -141,6 +141,29 @@
         "to-fast-properties": "^2.0.0"
       }
     },
+    "acorn": {
+      "version": "5.7.3",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
+      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+      "dev": true
+    },
+    "acorn-jsx": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
+      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
+      "dev": true,
+      "requires": {
+        "acorn": "^3.0.4"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "3.3.0",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
+          "dev": true
+        }
+      }
+    },
     "ajv": {
       "version": "6.10.2",
       "resolved": "https://npm.fabit.ru/ajv/-/ajv-6.10.2.tgz",
@@ -153,6 +176,18 @@
         "uri-js": "^4.2.2"
       }
     },
+    "ajv-keywords": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.1.tgz",
+      "integrity": "sha1-YXmX/F9gV2iUxDX5QNgZ4TW4B2I=",
+      "dev": true
+    },
+    "ansi-escapes": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.2.0.tgz",
+      "integrity": "sha512-cBhpre4ma+U0T1oM5fXg7Dy1Jw7zzwv7lt/GoCpr+hDQJoYnKVPLL4dCvSEFMmQurOQvSrwT7SL/DAlhBI97RQ==",
+      "dev": true
+    },
     "ansi-regex": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
@@ -189,6 +224,79 @@
         "sprintf-js": "~1.0.2"
       }
     },
+    "array-includes": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/array-includes/-/array-includes-3.1.1.tgz",
+      "integrity": "sha512-c2VXaCHl7zPsvpkFsw4nxvFie4fh1ur9bpcgsVkIjqn0H/Xwdg+7fv3n2r/isyS8EBj5b06M9kHyZuIr4El6WQ==",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.3",
+        "es-abstract": "^1.17.0",
+        "is-string": "^1.0.5"
+      },
+      "dependencies": {
+        "es-abstract": {
+          "version": "1.17.0",
+          "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.17.0.tgz",
+          "integrity": "sha512-yYkE07YF+6SIBmg1MsJ9dlub5L48Ek7X0qz+c/CPCHS9EBXfESorzng4cJQjJW5/pB6vDF41u7F8vUhLVDqIug==",
+          "dev": true,
+          "requires": {
+            "es-to-primitive": "^1.2.1",
+            "function-bind": "^1.1.1",
+            "has": "^1.0.3",
+            "has-symbols": "^1.0.1",
+            "is-callable": "^1.1.5",
+            "is-regex": "^1.0.5",
+            "object-inspect": "^1.7.0",
+            "object-keys": "^1.1.1",
+            "object.assign": "^4.1.0",
+            "string.prototype.trimleft": "^2.1.1",
+            "string.prototype.trimright": "^2.1.1"
+          }
+        },
+        "is-callable": {
+          "version": "1.1.5",
+          "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.5.tgz",
+          "integrity": "sha512-ESKv5sMCJB2jnHTWZ3O5itG+O128Hsus4K4Qh1h2/cgn2vbgnLSVqfV46AeJA9D5EeeLa9w81KUXMtn34zhX+Q==",
+          "dev": true
+        },
+        "is-regex": {
+          "version": "1.0.5",
+          "resolved": "https://registry.npmjs.org/is-regex/-/is-regex-1.0.5.tgz",
+          "integrity": "sha512-vlKW17SNq44owv5AQR3Cq0bQPEb8+kF3UKZ2fiZNOWtztYE5i0CzCZxFDwO58qAOWtxdBRVO/V5Qin1wjCqFYQ==",
+          "dev": true,
+          "requires": {
+            "has": "^1.0.3"
+          }
+        },
+        "object-inspect": {
+          "version": "1.7.0",
+          "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.7.0.tgz",
+          "integrity": "sha512-a7pEHdh1xKIAgTySUGgLMx/xwDZskN1Ud6egYYN3EdRW4ZMPNEDUTF+hwy2LUC+Bl+SyLXANnwz/jyh/qutKUw==",
+          "dev": true
+        },
+        "string.prototype.trimleft": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string.prototype.trimleft/-/string.prototype.trimleft-2.1.1.tgz",
+          "integrity": "sha512-iu2AGd3PuP5Rp7x2kEZCrB2Nf41ehzh+goo8TV7z8/XDBbsvc6HQIlUl9RjkZ4oyrW1XM5UwlGl1oVEaDjg6Ag==",
+          "dev": true,
+          "requires": {
+            "define-properties": "^1.1.3",
+            "function-bind": "^1.1.1"
+          }
+        },
+        "string.prototype.trimright": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string.prototype.trimright/-/string.prototype.trimright-2.1.1.tgz",
+          "integrity": "sha512-qFvWL3/+QIgZXVmJBfpHmxLB7xsUXz6HsUmP8+5dRaC3Q7oKUv9Vo6aMCRZC1smrtyECFsIT30PqBJ1gTjAs+g==",
+          "dev": true,
+          "requires": {
+            "define-properties": "^1.1.3",
+            "function-bind": "^1.1.1"
+          }
+        }
+      }
+    },
     "asn1": {
       "version": "0.2.4",
       "resolved": "https://npm.fabit.ru/asn1/-/asn1-0.2.4.tgz",
@@ -222,6 +330,25 @@
       "integrity": "sha512-Uvq6hVe90D0B2WEnUqtdgY1bATGz3mw33nH9Y+dmA+w5DHvUmBgkr5rM/KCHpCsiFNRUfokW/szpPPgMK2hm4A==",
       "dev": true
     },
+    "babel-code-frame": {
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
+      "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+      "dev": true,
+      "requires": {
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
+      },
+      "dependencies": {
+        "js-tokens": {
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-3.0.2.tgz",
+          "integrity": "sha1-mGbfOVECEw449/mWvOtlRDIJwls=",
+          "dev": true
+        }
+      }
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -262,6 +389,12 @@
       "integrity": "sha512-TdiJxMVnodVS7r0BdL42y/pqC9cL2iKynVwA0Ho3qbsQYr428veL3l7BQyuqiw+Q5SqqoT0m4srSY/BlZ9AxXg==",
       "dev": true
     },
+    "buffer-from": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
+      "dev": true
+    },
     "caching-transform": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/caching-transform/-/caching-transform-3.0.2.tgz",
@@ -274,6 +407,21 @@
         "write-file-atomic": "^2.4.2"
       }
     },
+    "caller-path": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-0.1.0.tgz",
+      "integrity": "sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=",
+      "dev": true,
+      "requires": {
+        "callsites": "^0.2.0"
+      }
+    },
+    "callsites": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-0.2.0.tgz",
+      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
+      "dev": true
+    },
     "camelcase": {
       "version": "5.3.1",
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@@ -1448,6 +2420,12 @@
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@@ -1492,6 +2470,18 @@
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@@ -1578,6 +2574,12 @@
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@@ -1652,6 +2672,16 @@
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@@ -1670,6 +2700,30 @@
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+      "resolved": "https://registry.npmjs.org/run-async/-/run-async-2.3.0.tgz",
+      "integrity": "sha1-A3GrSuC91yDUFm19/aZP96RFpsA=",
+      "dev": true,
+      "requires": {
+        "is-promise": "^2.1.0"
+      }
+    },
+    "rx-lite": {
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-4.0.8.tgz",
+      "integrity": "sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=",
+      "dev": true
+    },
+    "rx-lite-aggregates": {
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/rx-lite-aggregates/-/rx-lite-aggregates-4.0.8.tgz",
+      "integrity": "sha1-dTuHqJoRyVRnxKwWJsTvxOBcZ74=",
+      "dev": true,
+      "requires": {
+        "rx-lite": "*"
+      }
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@@ -1704,12 +2758,36 @@
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+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-1.2.0.tgz",
+      "integrity": "sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=",
+      "dev": true,
+      "requires": {
+        "shebang-regex": "^1.0.0"
+      }
+    },
+    "shebang-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/shebang-regex/-/shebang-regex-1.0.0.tgz",
+      "integrity": "sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=",
+      "dev": true
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       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
       "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
       "dev": true
     },
+    "slice-ansi": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-1.0.0.tgz",
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+      "requires": {
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@@ -1904,12 +2982,112 @@
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+    "strip-json-comments": {
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+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
+      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
+      "dev": true
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       "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
       "dev": true
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+    "table": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/table/-/table-4.0.2.tgz",
+      "integrity": "sha512-UUkEAPdSGxtRpiV9ozJ5cMTtYiqz7Ni1OGqLXRCynrvzdtR1p+cfOWe2RJLwvUG8hNanaSRjecIqwOjqeatDsA==",
+      "dev": true,
+      "requires": {
+        "ajv": "^5.2.3",
+        "ajv-keywords": "^2.1.0",
+        "chalk": "^2.1.0",
+        "lodash": "^4.17.4",
+        "slice-ansi": "1.0.0",
+        "string-width": "^2.1.1"
+      },
+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
+          "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
+          "dev": true,
+          "requires": {
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+            "fast-deep-equal": "^1.0.0",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.3.0"
+          }
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+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
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+        "ansi-styles": {
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+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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+          "dev": true,
+          "requires": {
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+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
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+        "fast-deep-equal": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
+          "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
+          "dev": true
+        },
+        "json-schema-traverse": {
+          "version": "0.3.1",
+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz",
+          "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
+      }
+    },
     "tap-dot": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/tap-dot/-/tap-dot-2.0.0.tgz",
@@ -2028,6 +3206,12 @@
         "require-main-filename": "^2.0.0"
       }
     },
+    "text-table": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
+      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
+      "dev": true
+    },
     "throo": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/throo/-/throo-1.0.1.tgz",
@@ -2050,6 +3234,15 @@
         "xtend": "~4.0.1"
       }
     },
+    "tmp": {
+      "version": "0.0.33",
+      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
+      "integrity": "sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==",
+      "dev": true,
+      "requires": {
+        "os-tmpdir": "~1.0.2"
+      }
+    },
     "to-fast-properties": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
@@ -2095,6 +3288,21 @@
       "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
       "dev": true
     },
+    "type-check": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
+      "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "dev": true,
+      "requires": {
+        "prelude-ls": "~1.1.2"
+      }
+    },
+    "typedarray": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
+      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
+      "dev": true
+    },
     "uglify-js": {
       "version": "3.7.2",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.7.2.tgz",
@@ -2172,6 +3380,12 @@
       "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
       "dev": true
     },
+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==",
+      "dev": true
+    },
     "wordwrap": {
       "version": "0.0.3",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
@@ -2221,6 +3435,15 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
+    "write": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
+      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
+      "dev": true,
+      "requires": {
+        "mkdirp": "^0.5.1"
+      }
+    },
     "write-file-atomic": {
       "version": "2.4.3",
       "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.3.tgz",
diff --git a/package.json b/package.json
index 42cd53e..a577247 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,8 @@
     "test": "tape \"test/**/*.test.js\" | tap_bail | tap-dot",
     "testWithoutBail": "tape \"test/**/*.test.js\" | tap-dot",
     "makeCodeCoverageSummaryReport": "nyc --reporter text-summary npm test",
-    "makeCodeCoverageDetailReport": "nyc --reporter=lcov --reporter html npm test"
+    "makeCodeCoverageDetailReport": "nyc --reporter=lcov --reporter html npm test",
+    "lint": "eslint ./"
   },
   "peerDependencies": {
     "mongodb": "2.x.x || 3.x.x"
@@ -29,6 +30,9 @@
     "blue-tape": "1.0.0",
     "coveralls": "3.0.9",
     "es6-promisify": "6.0.2",
+    "eslint": "4.19.1",
+    "eslint-config-airbnb-base": "12.1.0",
+    "eslint-plugin-import": "2.18.2",
     "mongodb": "2.x.x || 3.x.x",
     "nyc": "14.1.1",
     "tap-dot": "2.0.0",
@@ -37,7 +41,8 @@
     "tape-catch": "1.0.6",
     "tape-promise": "4.0.0"
   },
-  "dependencies": {
-    "mongodb-uri": "0.9.7"
+  "dependencies": {},
+  "engines": {
+    "node": ">=4.0.0"
   }
 }
diff --git a/test/adapter/connect/withSuitableParams.test.js b/test/adapter/connect/withSuitableParams.test.js
index f6c1f60..cb64628 100644
--- a/test/adapter/connect/withSuitableParams.test.js
+++ b/test/adapter/connect/withSuitableParams.test.js
@@ -21,6 +21,6 @@ test('adapter connect method with suitable params', (assert) => {
 		});
 });
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return adapter.disconnect();
 });
diff --git a/test/adapter/disconnect/withConnectedAdapter.test.js b/test/adapter/disconnect/withConnectedAdapter.test.js
index 1956314..27ba48b 100644
--- a/test/adapter/disconnect/withConnectedAdapter.test.js
+++ b/test/adapter/disconnect/withConnectedAdapter.test.js
@@ -5,11 +5,11 @@ const testUtils = require('../../utils');
 const test = testUtils.test;
 let adapter;
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 	return adapter.connect();
 });
 
-test('adapter disconnect method with connected adapter', (assert) => {
+test('adapter disconnect method with connected adapter', () => {
 	return adapter.disconnect();
 });
diff --git a/test/adapter/disconnect/withNotConnectedAdapter.test.js b/test/adapter/disconnect/withNotConnectedAdapter.test.js
index 265dc46..d5944c4 100644
--- a/test/adapter/disconnect/withNotConnectedAdapter.test.js
+++ b/test/adapter/disconnect/withNotConnectedAdapter.test.js
@@ -10,6 +10,6 @@ test('setup', (assert) => {
 	assert.end();
 });
 
-test('adapter disconnect method with connected adapter', (assert) => {
+test('adapter disconnect method with connected adapter', () => {
 	return adapter.disconnect();
 });
diff --git a/test/adapter/getExecutedMigrationNames/withExecutedMigrations.test.js b/test/adapter/getExecutedMigrationNames/withExecutedMigrations.test.js
index 492e761..d147737 100644
--- a/test/adapter/getExecutedMigrationNames/withExecutedMigrations.test.js
+++ b/test/adapter/getExecutedMigrationNames/withExecutedMigrations.test.js
@@ -6,7 +6,7 @@ const test = testUtils.test;
 let adapter;
 const migrationName = '1_someMigration';
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 
 	return Promise.resolve()
@@ -29,7 +29,7 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return Promise.resolve()
 		.then(() => testUtils.clearAdapterCollection({adapter}))
 		.then(() => adapter.disconnect());
diff --git a/test/adapter/getExecutedMigrationNames/withoutExecutedMigrations.test.js b/test/adapter/getExecutedMigrationNames/withoutExecutedMigrations.test.js
index 490728d..81dee6d 100644
--- a/test/adapter/getExecutedMigrationNames/withoutExecutedMigrations.test.js
+++ b/test/adapter/getExecutedMigrationNames/withoutExecutedMigrations.test.js
@@ -5,7 +5,7 @@ const testUtils = require('../../utils');
 const test = testUtils.test;
 let adapter;
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 	return adapter.connect();
 });
@@ -20,6 +20,6 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return adapter.disconnect();
 });
diff --git a/test/adapter/getTemplatePath/withSuitableParams.test.js b/test/adapter/getTemplatePath/withSuitableParams.test.js
index fca9c8c..210eda9 100644
--- a/test/adapter/getTemplatePath/withSuitableParams.test.js
+++ b/test/adapter/getTemplatePath/withSuitableParams.test.js
@@ -22,7 +22,7 @@ test(
 
 		assert.equal(
 			templatePath,
-			'../../../lib/migrationTemplate.js',
+			'../../../lib/migrationTemplates/promises.js',
 			'should return path to migration template'
 		);
 
diff --git a/test/adapter/markExecuted/withExecutedMigration.test.js b/test/adapter/markExecuted/withExecutedMigration.test.js
index 8b1e4dc..e646ca6 100644
--- a/test/adapter/markExecuted/withExecutedMigration.test.js
+++ b/test/adapter/markExecuted/withExecutedMigration.test.js
@@ -6,7 +6,7 @@ const test = testUtils.test;
 let adapter;
 const migrationName = '1_someMigration';
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 
 	return Promise.resolve()
@@ -31,7 +31,7 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return Promise.resolve()
 		.then(() => testUtils.clearAdapterCollection({adapter}))
 		.then(() => adapter.disconnect());
diff --git a/test/adapter/markExecuted/withoutExecutedMigration.test.js b/test/adapter/markExecuted/withoutExecutedMigration.test.js
index 0a14b8e..917d485 100644
--- a/test/adapter/markExecuted/withoutExecutedMigration.test.js
+++ b/test/adapter/markExecuted/withoutExecutedMigration.test.js
@@ -6,7 +6,7 @@ const test = testUtils.test;
 let adapter;
 const migrationName = '1_someMigration';
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 
 	return Promise.resolve()
@@ -30,7 +30,7 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return Promise.resolve()
 		.then(() => testUtils.clearAdapterCollection({adapter}))
 		.then(() => adapter.disconnect());
diff --git a/test/adapter/unmarkExecuted/withExecutedMigration.test.js b/test/adapter/unmarkExecuted/withExecutedMigration.test.js
index 2b12021..c97391b 100644
--- a/test/adapter/unmarkExecuted/withExecutedMigration.test.js
+++ b/test/adapter/unmarkExecuted/withExecutedMigration.test.js
@@ -6,7 +6,7 @@ const test = testUtils.test;
 let adapter;
 const migrationName = '1_someMigration';
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 
 	return Promise.resolve()
@@ -31,7 +31,7 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return Promise.resolve()
 		.then(() => testUtils.clearAdapterCollection({adapter}))
 		.then(() => adapter.disconnect());
diff --git a/test/adapter/unmarkExecuted/withoutExecutedMigration.test.js b/test/adapter/unmarkExecuted/withoutExecutedMigration.test.js
index e6a73b1..31ee33d 100644
--- a/test/adapter/unmarkExecuted/withoutExecutedMigration.test.js
+++ b/test/adapter/unmarkExecuted/withoutExecutedMigration.test.js
@@ -6,7 +6,7 @@ const test = testUtils.test;
 let adapter;
 const migrationName = '1_someMigration';
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 
 	return Promise.resolve()
@@ -30,7 +30,7 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return Promise.resolve()
 		.then(() => testUtils.clearAdapterCollection({adapter}))
 		.then(() => adapter.disconnect());
diff --git a/test/helpers/dropIndexIfExists/withExistingIndex.test.js b/test/helpers/dropIndexIfExists/withExistingIndex.test.js
index 36d9c4f..6b19cfd 100644
--- a/test/helpers/dropIndexIfExists/withExistingIndex.test.js
+++ b/test/helpers/dropIndexIfExists/withExistingIndex.test.js
@@ -1,12 +1,11 @@
 'use strict';
 
 const testUtils = require('../../utils');
-const helpers = require('../../../lib/helpers');
 
 const test = testUtils.test;
 let adapter;
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 
 	return Promise.resolve()
@@ -41,7 +40,7 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return Promise.resolve()
 		.then(() => adapter.collection.dropIndexes())
 		.then(() => adapter.disconnect());
diff --git a/test/helpers/dropIndexIfExists/withExistingIndexAndCallback.test.js b/test/helpers/dropIndexIfExists/withExistingIndexAndCallback.test.js
new file mode 100644
index 0000000..0fff40b
--- /dev/null
+++ b/test/helpers/dropIndexIfExists/withExistingIndexAndCallback.test.js
@@ -0,0 +1,53 @@
+'use strict';
+
+const testUtils = require('../../utils');
+
+const test = testUtils.test;
+let adapter;
+
+test('setup', () => {
+	adapter = testUtils.createAdapter();
+
+	return Promise.resolve()
+		.then(() => adapter.connect())
+		.then(() => adapter.collection.dropIndexes())
+		.then(() => adapter.collection.createIndex({first: 1, second: -1}));
+});
+
+test(
+	'helpers dropIndexIfExists with existing index and callback',
+	(assert) => {
+		return Promise.resolve()
+			.then(() => {
+				return new Promise((resolve, reject) => {
+					adapter.helpers.dropIndexIfExists(
+						adapter.collection,
+						{first: 1, second: -1},
+						(err) => {
+							if (err) return reject(err);
+							resolve();
+						}
+					);
+				});
+			})
+			.then(() => adapter.collection.indexes())
+			.then((indexes) => {
+				assert.equal(
+					indexes.length,
+					1,
+					'should leave only one index'
+				);
+				assert.deepEqual(
+					indexes[0].key,
+					{_id: 1},
+					'should leave only one index: _id'
+				);
+			});
+	}
+);
+
+test('teardown', () => {
+	return Promise.resolve()
+		.then(() => adapter.collection.dropIndexes())
+		.then(() => adapter.disconnect());
+});
diff --git a/test/helpers/dropIndexIfExists/withNotExistingIndex.test.js b/test/helpers/dropIndexIfExists/withNotExistingIndex.test.js
index 70cab17..f78020e 100644
--- a/test/helpers/dropIndexIfExists/withNotExistingIndex.test.js
+++ b/test/helpers/dropIndexIfExists/withNotExistingIndex.test.js
@@ -1,12 +1,11 @@
 'use strict';
 
 const testUtils = require('../../utils');
-const helpers = require('../../../lib/helpers');
 
 const test = testUtils.test;
 let adapter;
 
-test('setup', (assert) => {
+test('setup', () => {
 	adapter = testUtils.createAdapter();
 
 	return Promise.resolve()
@@ -40,6 +39,6 @@ test(
 	}
 );
 
-test('teardown', (assert) => {
+test('teardown', () => {
 	return adapter.disconnect();
 });
diff --git a/test/lib/migrationTemplates.test.js b/test/lib/migrationTemplates.test.js
new file mode 100644
index 0000000..f4e96e3
--- /dev/null
+++ b/test/lib/migrationTemplates.test.js
@@ -0,0 +1,70 @@
+'use strict';
+
+const testUtils = require('../utils');
+const pathUtils = require('path');
+const fs = require('fs');
+const promisify = require('es6-promisify').promisify;
+
+const test = testUtils.test;
+
+test('migrationTemplates', (assert) => {
+	const templatesPath = pathUtils.resolve(
+		__dirname,
+		'../../lib/migrationTemplates'
+	);
+	const tryMigrationTemplate = (filename) => {
+		const templatePath = pathUtils.join(templatesPath, filename);
+		let migration;
+		assert.doesNotThrow(
+			() => {
+				// eslint-disable-next-line import/no-dynamic-require
+				migration = require(templatePath);
+			},
+			`${filename} template should be requireble`
+		);
+
+		assert.equal(
+			Array.isArray(migration.tags),
+			true,
+			`${filename} template tags should be an array`
+		);
+
+		return Promise.all([
+			migration.migrate({}),
+			migration.rollback({})
+		]);
+	};
+	const readdir = promisify(fs.readdir);
+	const nodeMajor = Number(process.versions.node.split('.')[0]);
+
+	return Promise.resolve()
+		.then(() => readdir(templatesPath))
+		.then((filenames) => {
+			assert.equal(
+				filenames.indexOf('promises.js') !== -1,
+				true,
+				'should contain promises migration template'
+			);
+			assert.equal(
+				filenames.indexOf('async.js') !== -1,
+				true,
+				'should contain promises migration template'
+			);
+			assert.equal(
+				filenames.length,
+				2,
+				'should contain only 2 templates'
+			);
+
+			if (nodeMajor >= 8) {
+				return Promise.all([
+					tryMigrationTemplate('promises.js'),
+					tryMigrationTemplate('async.js')
+				]);
+			} else {
+				return Promise.all([
+					tryMigrationTemplate('promises.js')
+				]);
+			}
+		});
+});
diff --git a/test/lib/module.test.js b/test/lib/module.test.js
index 3ed397f..6782464 100644
--- a/test/lib/module.test.js
+++ b/test/lib/module.test.js
@@ -7,14 +7,14 @@ const packageJson = require('../../package.json');
 
 const test = testUtils.test;
 
-test('module', (t) => {
-	t.equal(libModule, Adapter, 'should export adapter class');
+test('module', (assert) => {
+	assert.equal(libModule, Adapter, 'should export adapter class');
 
-	t.equal(
+	assert.equal(
 		packageJson.main,
 		'lib/index.js',
 		'should be set as main in package.json'
 	);
 
-	t.end();
+	assert.end();
 });
diff --git a/test/utils/createAdapter.js b/test/utils/createAdapter.js
index e723a00..6f625d6 100644
--- a/test/utils/createAdapter.js
+++ b/test/utils/createAdapter.js
@@ -1,10 +1,9 @@
 'use strict';
 
-const promisify = require('es6-promisify').promisify;
 const mongodbPackageJson = require('mongodb/package.json');
 const Adapter = require('../../lib/adapter');
 
-const mongodbMajor = mongodbPackageJson.version.split('.')[0];
+const mongodbMajor = Number(mongodbPackageJson.version.split('.')[0]);
 
 module.exports = () => {
 	const defaultParams = {
@@ -13,20 +12,11 @@ module.exports = () => {
 	};
 
 	// enable options only when options are supported by driver
-	if (mongodbMajor === '3') {
+	if (mongodbMajor === 3) {
 		defaultParams.options.useUnifiedTopology = true;
 	}
 
 	const adapter = new Adapter(defaultParams);
 
-	adapter.connect = promisify(adapter.connect.bind(adapter));
-	adapter.disconnect = promisify(adapter.disconnect.bind(adapter));
-	adapter.getExecutedMigrationNames = promisify(
-		adapter.getExecutedMigrationNames.bind(adapter)
-	);
-	adapter.helpers.dropIndexIfExists = promisify(
-		adapter.helpers.dropIndexIfExists
-	);
-
 	return adapter;
 };