diff --git a/types/pg/index.d.ts b/types/pg/index.d.ts
index 255165a1df..db132d570a 100644
--- a/types/pg/index.d.ts
+++ b/types/pg/index.d.ts
@@ -6,9 +6,9 @@
 
 /// <reference types="node" />
 
-import events = require("events");
-import stream = require("stream");
-import pgTypes = require("pg-types");
+import events = require('events');
+import stream = require('stream');
+import pgTypes = require('pg-types');
 
 import { ConnectionOptions } from "tls";
 
@@ -81,7 +81,7 @@ export interface QueryResultBase {
 }
 
 export interface QueryResultRow {
-	[column: string]: any;
+    [column: string]: any;
 }
 
 export interface QueryResult<R extends QueryResultRow = any> extends QueryResultBase {
@@ -112,7 +112,7 @@ export interface BindConfig {
     portal?: string;
     statement?: string;
     binary?: string;
-    values?: Array<(Buffer | null | undefined | string)>;
+    values?: Array<Buffer | null | undefined | string>;
 }
 
 export interface ExecuteConfig {
@@ -167,16 +167,34 @@ export class Pool extends events.EventEmitter {
 
     query<T extends Submittable>(queryStream: T): T;
     // tslint:disable:no-unnecessary-generics
-    query<R extends any[] = any[], I extends any[] = any[]>(queryConfig: QueryArrayConfig<I>, values?: I): Promise<QueryArrayResult<R>>;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryConfig: QueryConfig<I>): Promise<QueryResult<R>>;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryTextOrConfig: string | QueryConfig<I>, values?: I): Promise<QueryResult<R>>;
-    query<R extends any[] = any[], I extends any[] = any[]>(queryConfig: QueryArrayConfig<I>, callback: (err: Error, result: QueryArrayResult<R>) => void): void;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryTextOrConfig: string | QueryConfig<I>, callback: (err: Error, result: QueryResult<R>) => void): void;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryText: string, values: I, callback: (err: Error, result: QueryResult<R>) => void): void;
+    query<R extends any[] = any[], I extends any[] = any[]>(
+        queryConfig: QueryArrayConfig<I>,
+        values?: I,
+    ): Promise<QueryArrayResult<R>>;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryConfig: QueryConfig<I>,
+    ): Promise<QueryResult<R>>;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryTextOrConfig: string | QueryConfig<I>,
+        values?: I,
+    ): Promise<QueryResult<R>>;
+    query<R extends any[] = any[], I extends any[] = any[]>(
+        queryConfig: QueryArrayConfig<I>,
+        callback: (err: Error, result: QueryArrayResult<R>) => void,
+    ): void;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryTextOrConfig: string | QueryConfig<I>,
+        callback: (err: Error, result: QueryResult<R>) => void,
+    ): void;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryText: string,
+        values: I,
+        callback: (err: Error, result: QueryResult<R>) => void,
+    ): void;
     // tslint:enable:no-unnecessary-generics
 
-    on(event: "error", listener: (err: Error, client: PoolClient) => void): this;
-    on(event: "connect" | "acquire" | "remove", listener: (client: PoolClient) => void): this;
+    on(event: 'error', listener: (err: Error, client: PoolClient) => void): this;
+    on(event: 'connect' | 'acquire' | 'remove', listener: (client: PoolClient) => void): this;
 }
 
 export class ClientBase extends events.EventEmitter {
@@ -187,12 +205,30 @@ export class ClientBase extends events.EventEmitter {
 
     query<T extends Submittable>(queryStream: T): T;
     // tslint:disable:no-unnecessary-generics
-    query<R extends any[] = any[], I extends any[] = any[]>(queryConfig: QueryArrayConfig<I>, values?: I): Promise<QueryArrayResult<R>>;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryConfig: QueryConfig<I>): Promise<QueryResult<R>>;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryTextOrConfig: string | QueryConfig<I>, values?: I): Promise<QueryResult<R>>;
-    query<R extends any[] = any[], I extends any[] = any[]>(queryConfig: QueryArrayConfig<I>, callback: (err: Error, result: QueryArrayResult<R>) => void): void;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryTextOrConfig: string | QueryConfig<I>, callback: (err: Error, result: QueryResult<R>) => void): void;
-    query<R extends QueryResultRow = any, I extends any[] = any[]>(queryText: string, values: any[], callback: (err: Error, result: QueryResult<R>) => void): void;
+    query<R extends any[] = any[], I extends any[] = any[]>(
+        queryConfig: QueryArrayConfig<I>,
+        values?: I,
+    ): Promise<QueryArrayResult<R>>;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryConfig: QueryConfig<I>,
+    ): Promise<QueryResult<R>>;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryTextOrConfig: string | QueryConfig<I>,
+        values?: I,
+    ): Promise<QueryResult<R>>;
+    query<R extends any[] = any[], I extends any[] = any[]>(
+        queryConfig: QueryArrayConfig<I>,
+        callback: (err: Error, result: QueryArrayResult<R>) => void,
+    ): void;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryTextOrConfig: string | QueryConfig<I>,
+        callback: (err: Error, result: QueryResult<R>) => void,
+    ): void;
+    query<R extends QueryResultRow = any, I extends any[] = any[]>(
+        queryText: string,
+        values: any[],
+        callback: (err: Error, result: QueryResult<R>) => void,
+    ): void;
     // tslint:enable:no-unnecessary-generics
 
     copyFrom(queryText: string): stream.Writable;
@@ -204,11 +240,11 @@ export class ClientBase extends events.EventEmitter {
     escapeIdentifier(str: string): string;
     escapeLiteral(str: string): string;
 
-    on(event: "drain", listener: () => void): this;
-    on(event: "error" | "notice", listener: (err: Error) => void): this;
-    on(event: "notification", listener: (message: Notification) => void): this;
+    on(event: 'drain', listener: () => void): this;
+    on(event: 'error' | 'notice', listener: (err: Error) => void): this;
+    on(event: 'notification', listener: (message: Notification) => void): this;
     // tslint:disable-next-line unified-signatures
-    on(event: "end", listener: () => void): this;
+    on(event: 'end', listener: () => void): this;
 }
 
 export class Client extends ClientBase {
@@ -219,19 +255,20 @@ export class Client extends ClientBase {
 }
 
 export interface PoolClient extends ClientBase {
-    release(err?: Error): void;
+    release(err?: Error | boolean): void;
 }
 
-export class Query<R extends QueryResultRow = any, I extends any[] = any> extends events.EventEmitter implements Submittable {
+export class Query<R extends QueryResultRow = any, I extends any[] = any> extends events.EventEmitter
+    implements Submittable {
     constructor(queryTextOrConfig?: string | QueryConfig<I>, values?: I);
     submit: (connection: Connection) => void;
-    on(event: "row", listener: (row: R, result?: ResultBuilder<R>) => void): this;
-    on(event: "error", listener: (err: Error) => void): this;
-    on(event: "end", listener: (result: ResultBuilder<R>) => void): this;
+    on(event: 'row', listener: (row: R, result?: ResultBuilder<R>) => void): this;
+    on(event: 'error', listener: (err: Error) => void): this;
+    on(event: 'end', listener: (result: ResultBuilder<R>) => void): this;
 }
 
 export class Events extends events.EventEmitter {
-    on(event: "error", listener: (err: Error, client: Client) => void): this;
+    on(event: 'error', listener: (err: Error, client: Client) => void): this;
 }
 
 export const types: typeof pgTypes;
diff --git a/types/pg/pg-tests.ts b/types/pg/pg-tests.ts
index 673f4105e4..26332a803e 100644
--- a/types/pg/pg-tests.ts
+++ b/types/pg/pg-tests.ts
@@ -1,128 +1,135 @@
-import { types, Client, QueryArrayConfig, Pool } from "pg";
+import { types, Client, QueryArrayConfig, Pool } from 'pg';
 
 // https://github.com/brianc/node-pg-types
 // tslint:disable-next-line no-unnecessary-callback-wrapper
 types.setTypeParser(20, val => Number(val));
 
 const client = new Client({
-  host: 'my.database-server.com',
-  port: 5334,
-  user: 'database-user',
-  password: 'secretpassword!!',
-  keepAlive: true,
+    host: 'my.database-server.com',
+    port: 5334,
+    user: 'database-user',
+    password: 'secretpassword!!',
+    keepAlive: true,
 });
 client.connect(err => {
     if (err) {
-        console.error("Could not connect to postgres", err);
+        console.error('Could not connect to postgres', err);
         return;
     }
     client.query("SELECT NOW() AS 'theTime'", (err, result) => {
         if (err) {
-            console.error("Error running query", err);
+            console.error('Error running query', err);
             return;
         }
         console.log(result.rowCount);
-        console.log(result.rows[0]["theTime"]);
+        console.log(result.rows[0]['theTime']);
         client.end();
         return null;
     });
     return null;
 });
-client.on('end', () => console.log("Client was disconnected."));
+client.on('end', () => console.log('Client was disconnected.'));
 
-client.connect()
-  .then(() => console.log('connected'))
-  .catch(e => console.error('connection error', e.stack));
+client
+    .connect()
+    .then(() => console.log('connected'))
+    .catch(e => console.error('connection error', e.stack));
 
 client.query('SELECT NOW()', (err, res) => {
-  if (err) throw err;
-  console.log(res);
-  client.end();
+    if (err) throw err;
+    console.log(res);
+    client.end();
 });
 
 client.query('SELECT $1::text as name', ['brianc'], (err, res) => {
-  if (err) throw err;
-  console.log(res);
-  client.end();
+    if (err) throw err;
+    console.log(res);
+    client.end();
 });
 
 interface Person {
-  name: string;
+    name: string;
 }
 
 client.query<Person, [string]>('SELECT $1::text as name', ['brianc'], (err, res) => {
-  if (err) throw err;
-  console.log(res.rows[0].name);
-  client.end();
+    if (err) throw err;
+    console.log(res.rows[0].name);
+    client.end();
 });
 
 const query = {
-  name: 'get-name',
-  text: 'SELECT $1::text',
-  values: ['brianc']
+    name: 'get-name',
+    text: 'SELECT $1::text',
+    values: ['brianc'],
 };
 client.query(query, (err, res) => {
-  if (err) {
-    console.error(err.stack);
-  } else {
-    console.log(res.rows);
-    console.log(res.fields.map(f => f.name));
-  }
+    if (err) {
+        console.error(err.stack);
+    } else {
+        console.log(res.rows);
+        console.log(res.fields.map(f => f.name));
+    }
 });
-client.query(query)
-  .then(res => {
-    console.log(res.rows);
-    console.log(res.fields.map(f => f.name));
-  })
-  .catch(e => {
-    console.error(e.stack);
-  });
-client.query(query, ['brianc'])
-  .then(res => {
-    console.log(res.rows);
-    console.log(res.fields.map(f => f.name));
-  })
-  .catch(e => {
-    console.error(e.stack);
-  });
+client
+    .query(query)
+    .then(res => {
+        console.log(res.rows);
+        console.log(res.fields.map(f => f.name));
+    })
+    .catch(e => {
+        console.error(e.stack);
+    });
+client
+    .query(query, ['brianc'])
+    .then(res => {
+        console.log(res.rows);
+        console.log(res.fields.map(f => f.name));
+    })
+    .catch(e => {
+        console.error(e.stack);
+    });
 
 const queryArrMode: QueryArrayConfig = {
-  name: 'get-name-array',
-  text: 'SELECT $1::text',
-  values: ['brianc'],
-  rowMode: 'array'
+    name: 'get-name-array',
+    text: 'SELECT $1::text',
+    values: ['brianc'],
+    rowMode: 'array',
 };
 client.query(queryArrMode, (err, res) => {
-  if (err) {
-    console.error(err.stack);
-  } else {
-    console.log(res.rows);
-    console.log(res.fields.map(f => f.name));
-  }
+    if (err) {
+        console.error(err.stack);
+    } else {
+        console.log(res.rows);
+        console.log(res.fields.map(f => f.name));
+    }
 });
-client.query(queryArrMode)
-  .then(res => {
-    console.log(res.rows);
-    console.log(res.fields.map(f => f.name));
-  })
-  .catch(e => {
-    console.error(e.stack);
-  });
-client.query({
-  text: 'select 1',
-  rowMode: 'array',
-}).then(res => console.log(res.fields[0]));
+client
+    .query(queryArrMode)
+    .then(res => {
+        console.log(res.rows);
+        console.log(res.fields.map(f => f.name));
+    })
+    .catch(e => {
+        console.error(e.stack);
+    });
+client
+    .query({
+        text: 'select 1',
+        rowMode: 'array',
+    })
+    .then(res => console.log(res.fields[0]));
 
-client.end((err) => {
-  console.log('client has disconnected');
-  if (err) {
-    console.log('error during disconnection', err.stack);
-  }
+client.end(err => {
+    console.log('client has disconnected');
+    if (err) {
+        console.log('error during disconnection', err.stack);
+    }
 });
 
-client.end()
-  .then(() => console.log('client has disconnected'))
-  .catch(err => console.error('error during disconnection', err.stack));
+client
+    .end()
+    .then(() => console.log('client has disconnected'))
+    .catch(err => console.error('error during disconnection', err.stack));
 
 // pg.Pool
 // https://node-postgres.com/api/pool
@@ -131,74 +138,86 @@ client.end()
 const poolParameterlessCtor = new Pool();
 
 const poolOne = new Pool({
-  connectionString: 'postgresql://dbuser:secretpassword@database.server.com:3211/mydb'
+    connectionString: 'postgresql://dbuser:secretpassword@database.server.com:3211/mydb',
 });
 
 const pool = new Pool({
-  host: 'localhost',
-  port: 5432,
-  user: 'database-user',
-  database: 'my_db',
-  max: 20,
-  idleTimeoutMillis: 30000,
-  connectionTimeoutMillis: 2000,
-  keepAlive: false,
-  log: (...args) => {
-    console.log.apply(console, args);
-  },
+    host: 'localhost',
+    port: 5432,
+    user: 'database-user',
+    database: 'my_db',
+    max: 20,
+    idleTimeoutMillis: 30000,
+    connectionTimeoutMillis: 2000,
+    keepAlive: false,
+    log: (...args) => {
+        console.log.apply(console, args);
+    },
 });
 console.log(pool.totalCount);
 pool.connect((err, client, done) => {
-  if (err) {
-    console.error('error fetching client from pool', err);
-    return;
-  }
-  client.query('SELECT $1::int AS number', ['1'], (err, result) => {
-    done();
-
     if (err) {
-      console.error('error running query', err);
-      return;
+        console.error('error fetching client from pool', err);
+        return;
     }
-    console.log(result.rows[0].number);
-  });
+    client.query('SELECT $1::int AS number', ['1'], (err, result) => {
+        done();
+
+        if (err) {
+            console.error('error running query', err);
+            return;
+        }
+        console.log(result.rows[0].number);
+    });
 });
 
 pool.connect().then(client => {
-  client.query({ text: 'SELECT $1::int AS number', values: ['1'], rowMode: 'array' }).then(result => {
-    console.log(result.rowCount, result.rows[0][0], result.fields[0].name);
-  }).then(() => client.release(), e => client.release(e));
+    client
+        .query({ text: 'SELECT $1::int AS number', values: ['1'], rowMode: 'array' })
+        .then(result => {
+            console.log(result.rowCount, result.rows[0][0], result.fields[0].name);
+        })
+        .then(
+            () => client.release(),
+            e => client.release(e),
+        );
 });
 
 pool.on('error', (err, client) => {
-  console.error('idle client error', err.message, err.stack);
+    console.error('idle client error', err.message, err.stack);
 });
 
+(async () => {
+    const client = await pool.connect();
+    await client.query('SELECT 1');
+    client.release(true);
+})();
+
 pool.query('SELECT $1::text as name', ['brianc'], (err, result) => {
-  if (err) {
-    console.error('Error executing query', err.stack);
-    return;
-  }
-  console.log(result.rows[0].name);
+    if (err) {
+        console.error('Error executing query', err.stack);
+        return;
+    }
+    console.log(result.rows[0].name);
 });
 
 pool.query('SELECT $1::text as name', ['brianc'])
-  .then((res) => console.log(res.rows[0].name))
-  .catch(err => console.error('Error executing query', err.stack));
+    .then(res => console.log(res.rows[0].name))
+    .catch(err => console.error('Error executing query', err.stack));
 pool.query({ text: 'SELECT $1::text as name' }, ['brianc'])
-  .then((res) => console.log(res.rows[0].name))
-  .catch(err => console.error('Error executing query', err.stack));
+    .then(res => console.log(res.rows[0].name))
+    .catch(err => console.error('Error executing query', err.stack));
 
 pool.end(() => {
-  console.log('pool has ended');
+    console.log('pool has ended');
 });
 
 pool.end().then(() => console.log('pool has ended'));
 
 (async () => {
-  const client = await pool.connect();
-  await client.query('SELECT NOW()');
-  client.release();
+    const client = await pool.connect();
+    await client.query('SELECT NOW()');
+    client.release();
 })();
 
 // client constructor tests