Use 'BufferEncoding' symbol provided by @types/node

Author: malthe

src/client.ts

@@ -40,7 +40,6 @@ import {
 } from './protocol.js';
 
 import {
-    BufferEncoding,
     DataFormat,
     DataType,
     ValueTypeReader,

src/index.ts

@@ -14,7 +14,6 @@ import type { Configuration } from './client.js';
 export {
     DataFormat,
     DataType,
-    type BufferEncoding,
     type Point,
     type ValueTypeReader,
 } from './types.js';

src/protocol.ts

@@ -8,7 +8,6 @@ import { sum } from './utils.js';
 import {
     arrayDataTypeMapping,
     isPoint,
-    BufferEncoding,
     DataFormat,
     DataType,
     ValueTypeReader,

src/types.ts

@@ -1,10 +1,5 @@
 import { Buffer } from 'node:buffer';
 
-// This type isn't really exposed, but we can tease it out using some type gymnastics.
-export type BufferEncoding = NonNullable<
-    Required<Parameters<Buffer['toString']>[0]>
->;
-
 export const enum DataType {
     Bool = 16,
     Bytea = 17,