From 5efea302f34c3a0a57daf2fc981b494e907ac2dd Mon Sep 17 00:00:00 2001
From: Vlad Rindevich <rindevich.vs@gmail.com>
Date: Sun, 22 Jan 2017 01:53:35 +0300
Subject: [PATCH] libpq: Fix wrong definitions (#14164)

* fix(libpq): change returning type of `writable` method

* fix(libpq): remove optionality for `prepare` method's arguments

* fix(libpq): remove optionality for `sendPrepare` method's arguments
---
 libpq/index.d.ts | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/libpq/index.d.ts b/libpq/index.d.ts
index df2135046a..1e9e38dd5c 100644
--- a/libpq/index.d.ts
+++ b/libpq/index.d.ts
@@ -307,11 +307,11 @@ declare class Libpq extends EventEmitter {
      * (sync) Sends a named statement to the server to be prepared for later execution. blocks
      * until a result from the prepare operation is received.
      *
-     * @param {string} [statementName=""] a required string of name of the statement to prepare.
-     * @param {string} [commandText=""] a required string of the query.
-     * @param {number} [nParams=0] a count of the number of parameters in the commandText.
+     * @param {string} statementName a required string of name of the statement to prepare.
+     * @param {string} commandText a required string of the query.
+     * @param {number} nParams a count of the number of parameters in the commandText.
      */
-    prepare(statementName?: string, commandText?: string, nParams?: number): void;
+    prepare(statementName: string, commandText: string, nParams: number): void;
 
     /**
      * Retrieves detailed error information from the current result object. Very similar to
@@ -363,12 +363,12 @@ declare class Libpq extends EventEmitter {
     /**
      * (async) Sends a request to the backend to prepare a named statement with the given name.
      *
-     * @param {string} [statementName=""] a required string of name of the statement to prepare.
-     * @param {string} [commandText=""] a required string of the query.
-     * @param {number} [nParams=0] a count of the number of parameters in the commandText.
+     * @param {string} statementName a required string of name of the statement to prepare.
+     * @param {string} commandText a required string of the query.
+     * @param {number} nParams a count of the number of parameters in the commandText.
      * @returns {boolean} true if the command was sent succesfully or false if it failed to send.
      */
-    sendPrepare(statementName?: string, commandText?: string, nParams?: number): boolean;
+    sendPrepare(statementName: string, commandText: string, nParams: number): boolean;
 
     /**
      * (async) Sends a request to execute a previously prepared statement.
@@ -421,8 +421,10 @@ declare class Libpq extends EventEmitter {
      * and PQflush for async writing.
      *
      * @param {Function} callback
+     *
+     * @returns {Libpq}
      */
-    writable(callback: () => void): void;
+    writable(callback: () => void): this;
 }
 
 export = Libpq;