fix: promise connection typescript mismatched to underlying code

promise.d.ts

@@ -7,9 +7,11 @@ import {
   FieldPacket,
   QueryOptions,
   ConnectionOptions,
+  Connection as CoreConnection,
   PoolOptions,
   PoolClusterOptions,
   Pool as CorePool,
+  PoolConnection as CorePoolConnection,
 } from './index.js';
 import { ExecutableBase as ExecutableBaseClass } from './typings/mysql/lib/protocol/sequences/promise/ExecutableBase.js';
 import { QueryableBase as QueryableBaseClass } from './typings/mysql/lib/protocol/sequences/promise/QueryableBase.js';
@@ -42,6 +44,8 @@ export interface PreparedStatementInfo {
 export interface Connection extends QueryableAndExecutableBase {
   config: ConnectionOptions;
 
+  connection: CoreConnection;
+
   threadId: number;
 
   connect(): Promise<void>;
@@ -78,17 +82,16 @@ export interface Connection extends QueryableAndExecutableBase {
 
 export interface PoolConnection extends Connection {
   release(): void;
-  connection: Connection;
 }
 
-export interface Pool extends Connection {
+export interface Pool extends QueryableAndExecutableBase, Pick<CorePool, 'escape' | 'escapeId' | 'format'> {
   getConnection(): Promise<PoolConnection>;
 
   releaseConnection(connection: PoolConnection): void;
 
-  on(event: 'connection', listener: (connection: PoolConnection) => any): this;
-  on(event: 'acquire', listener: (connection: PoolConnection) => any): this;
-  on(event: 'release', listener: (connection: PoolConnection) => any): this;
+  on(event: 'connection', listener: (connection: CorePoolConnection) => any): this;
+  on(event: 'acquire', listener: (connection: CorePoolConnection) => any): this;
+  on(event: 'release', listener: (connection: CorePoolConnection) => any): this;
   on(event: 'enqueue', listener: () => any): this;
 
   end(): Promise<void>;

typings/mysql/lib/Connection.d.ts

@@ -335,7 +335,9 @@ export interface ConnectionOptions {
   jsonStrings?: boolean;
 }
 
-declare class Connection extends QueryableBase(ExecutableBase(EventEmitter)) {
+declare class BaseConnection extends QueryableBase(
+  ExecutableBase(EventEmitter),
+) {
   config: ConnectionOptions;
 
   threadId: number;
@@ -414,8 +416,6 @@ declare class Connection extends QueryableBase(ExecutableBase(EventEmitter)) {
 
   serverHandshake(args: any): any;
 
-  promise(promiseImpl?: PromiseConstructor): PromiseConnection;
-
   ping(callback?: (err: QueryError | null) => any): void;
 
   writeOk(args?: OkPacketParams): void;
@@ -431,4 +431,7 @@ declare class Connection extends QueryableBase(ExecutableBase(EventEmitter)) {
   sequenceId: number;
 }
 
-export { Connection };
+declare class Connection extends BaseConnection {
+  promise(promiseImpl?: PromiseConstructor): PromiseConnection;
+}
+export { Connection, BaseConnection };

typings/mysql/lib/Pool.d.ts

@@ -63,6 +63,13 @@ declare class Pool extends QueryableBase(ExecutableBase(EventEmitter)) {
 
   promise(promiseImpl?: PromiseConstructor): PromisePool;
 
+  format(sql: string, values?: any | any[] | { [param: string]: any }): string;
+
+  escape(value: any): string;
+
+  escapeId(value: string | string[]): string;
+  escapeId(values: string[]): string;
+
   config: PoolOptions;
 }
 

typings/mysql/lib/PoolConnection.d.ts

@@ -1,7 +1,7 @@
-import { Connection } from './Connection.js';
+import { Connection, BaseConnection } from './Connection.js';
 import { Pool as PromisePool } from '../../../promise.js';
 
-declare class PoolConnection extends Connection {
+declare class PoolConnection extends BaseConnection {
   connection: Connection;
   release(): void;
   promise(promiseImpl?: PromiseConstructor): PromisePool;