diff --git a/package-lock.json b/package-lock.json
index 5ee3cc6..b87a04b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "dblang",
-  "version": "1.0.0",
+  "version": "0.7.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dblang",
-      "version": "1.0.0",
+      "version": "0.7.0",
       "license": "UNLICENSED",
       "dependencies": {
         "mariadb": "^3.0.2",
@@ -19,7 +19,7 @@
         "typescript": "^4.9.4"
       },
       "engines": {
-        "node": ">= 14"
+        "node": ">= 16"
       }
     },
     "node_modules/@esbuild/android-arm": {
diff --git a/package.json b/package.json
index b7a92e3..2d93d67 100644
--- a/package.json
+++ b/package.json
@@ -1,10 +1,10 @@
 {
   "name": "dblang",
-  "version": "0.6.2",
+  "version": "0.7.0",
   "description": "",
   "main": "dist/db.js",
   "types": "dist/db.d.ts",
-  "type": "commonjs",
+  "type": "module",
   "directories": {
     "dist": "dist"
   },
@@ -22,7 +22,7 @@
     "pg": "^8.9.0"
   },
   "engines": {
-    "node": ">= 14"
+    "node": ">= 16"
   },
   "devDependencies": {
     "@types/node": "^18.11.18",
diff --git a/src/alias.ts b/src/alias.ts
index 9ea7ad5..38a8a58 100644
--- a/src/alias.ts
+++ b/src/alias.ts
@@ -1,5 +1,5 @@
-import { Attribute, DB, Table } from "./db"
-import { Handler } from "./defaultHandler";
+import { Attribute, DB, Table } from "./db.js"
+import { Handler } from "./defaultHandler.js";
 
 export class AttributeAlias {
     name: string;
diff --git a/src/db.ts b/src/db.ts
index 43f4693..8057ce0 100644
--- a/src/db.ts
+++ b/src/db.ts
@@ -1,12 +1,17 @@
 import mariadb from 'mariadb';
-import { checkConstraint, Constraint, Datatype, foreignConstraint, uniqueConstraint } from './dbStructure';
-import { Handler } from './defaultHandler';
-import { Query } from './query';
-import { attributeSettings, extendedAttributeSettings, onAction, dbType } from './types';
-import { TableAlias } from "./alias"
-import { insertResponse, readResponse, writeResponse, singleResponse } from "./responses"
+import { checkConstraint, Constraint, Datatype, foreignConstraint, uniqueConstraint } from './dbStructure.js';
+import { Handler } from './defaultHandler.js';
+import { Query } from './query.js';
+import { attributeSettings, extendedAttributeSettings, onAction, dbType } from './types.js';
+import { TableAlias } from "./alias.js"
+import { insertResponse, readResponse, writeResponse, singleResponse } from "./responses.js"
 //import { postgresHandler } from "./postgresHandler"
 
+declare module "mariadb" {
+    interface Pool{
+        on(ev: 'error', callback: () => void): Pool;
+    }
+}
 
 export class DB {
     tables: Table[] = [];
@@ -21,6 +26,8 @@ export class DB {
         this.type = databaseType;
         if (databaseType == dbType.mariadb) {
             this.mariaPool = mariadb.createPool({ host, user, password, port, database, connectionLimit, multipleStatements: true });
+            // catch errors
+            this.mariaPool.on("error",()=>{});
             this.handler = new Handler(this);
         }
         /*else if (databaseType == dbType.postgres) {
@@ -170,7 +177,7 @@ export class Table {
     }
 }
 
-export * from './funcs';
+export * from './funcs.js';
 export { onAction };
 export { dbType as databaseType }
 export { readResponse, writeResponse, insertResponse, singleResponse }
\ No newline at end of file
diff --git a/src/dbStructure.ts b/src/dbStructure.ts
index 26de25e..f2a693b 100644
--- a/src/dbStructure.ts
+++ b/src/dbStructure.ts
@@ -1,7 +1,7 @@
-import { Attribute, Table } from "./db";
-import { Handler } from "./defaultHandler";
-import { QueryBuilder } from "./query";
-import { allModifierInput, joinElements, joinType, onAction, primaryData, serializeReturn } from "./types";
+import { Attribute, Table } from "./db.js";
+import { Handler } from "./defaultHandler.js";
+import { QueryBuilder } from "./query.js";
+import { allModifierInput, joinElements, joinType, onAction, primaryData, serializeReturn } from "./types.js";
 
 export class Datatype {
     type: string;
diff --git a/src/defaultHandler.ts b/src/defaultHandler.ts
index 883c337..d37ded8 100644
--- a/src/defaultHandler.ts
+++ b/src/defaultHandler.ts
@@ -1,8 +1,8 @@
-import { AttributeAlias, TableAlias } from "./alias";
-import { Attribute, DB, insertResponse, readResponse, Table, writeResponse } from "./db"
-import { Aggregation, checkConstraint, joinCross, Datatype, foreignConstraint, Modifier, joinNatural, onJoin, uniqueConstraint, usingJoin } from "./dbStructure"
-import { insertQuery, Query, QueryBuilder, removeQuery, selectQuery, updateQuery } from "./query"
-import { allModifierInput, joinType, onAction, primaryData } from "./types"
+import { AttributeAlias, TableAlias } from "./alias.js";
+import { Attribute, DB, insertResponse, readResponse, Table, writeResponse } from "./db.js"
+import { Aggregation, checkConstraint, joinCross, Datatype, foreignConstraint, Modifier, joinNatural, onJoin, uniqueConstraint, usingJoin } from "./dbStructure.js"
+import { insertQuery, Query, QueryBuilder, removeQuery, selectQuery, updateQuery } from "./query.js"
+import { allModifierInput, joinType, onAction, primaryData } from "./types.js"
 
 export class Handler {
     db: DB;
diff --git a/src/funcs.ts b/src/funcs.ts
index e440898..a11b831 100644
--- a/src/funcs.ts
+++ b/src/funcs.ts
@@ -1,7 +1,7 @@
-import { Attribute, Table } from "./db";
-import { Aggregation, BooleanModifier, checkConstraint, Datatype, foreignConstraint, joinCross, joinNatural, usingJoin, onJoin, NumberModifier, StringModifier, uniqueConstraint } from "./dbStructure";
-import { insertQuery, removeQuery, selectQuery, updateQuery } from "./query";
-import { allModifierInput, joinType, selectElements, selectFromElements } from "./types";
+import { Attribute, Table } from "./db.js";
+import { Aggregation, BooleanModifier, checkConstraint, Datatype, foreignConstraint, joinCross, joinNatural, usingJoin, onJoin, NumberModifier, StringModifier, uniqueConstraint } from "./dbStructure.js";
+import { insertQuery, removeQuery, selectQuery, updateQuery } from "./query.js";
+import { allModifierInput, joinType, selectElements, selectFromElements } from "./types.js";
 
 //modifiers
 export const and = (...args: BooleanModifier[]) => new BooleanModifier("and", args);
diff --git a/src/query.ts b/src/query.ts
index f5202c7..9571692 100644
--- a/src/query.ts
+++ b/src/query.ts
@@ -1,8 +1,8 @@
-import { AttributeAlias } from "./alias";
-import { Attribute, DB, Table } from "./db";
-import { BooleanModifier, Modifier } from "./dbStructure";
-import { Handler } from "./defaultHandler";
-import { allModifierInput, primaryData, selectElements, selectFromElements, serializeReturn } from "./types";
+import { AttributeAlias } from "./alias.js";
+import { Attribute, DB, Table } from "./db.js";
+import { BooleanModifier, Modifier } from "./dbStructure.js";
+import { Handler } from "./defaultHandler.js";
+import { allModifierInput, primaryData, selectElements, selectFromElements, serializeReturn } from "./types.js";
 
 
 export class Query {
@@ -101,7 +101,7 @@ export class selectQuery {
         const builder = this.serialize(handler);
         const s = handler.builders.query(builder);
         let readResp = await db.query(s, printQuery);
-        return db.getHandler().responses.readResponse(readResp);
+        return handler.responses.readResponse(readResp);
     }
 }
 
diff --git a/src/responses.ts b/src/responses.ts
index cede0f9..0261f44 100644
--- a/src/responses.ts
+++ b/src/responses.ts
@@ -1,6 +1,6 @@
-import { AttributeAlias } from "./alias";
-import { Attribute } from "./db";
-import { primaryData } from "./types";
+import { AttributeAlias } from "./alias.js";
+import { Attribute } from "./db.js";
+import { primaryData } from "./types.js";
 
 export class singleResponse {
     [key: string]: primaryData | any;
@@ -15,7 +15,9 @@ export class singleResponse {
 export class readResponse extends Array<singleResponse>{
     constructor(rows: ({ [key: string]: primaryData })[]) {
         super();
-        this.push(...rows.map(r => new singleResponse(r)));
+        for(let i = 0; i < rows.length; i++){
+            this[i] = new singleResponse(rows[i])
+        }
     }
 }
 
diff --git a/src/types.ts b/src/types.ts
index f256d8d..4783874 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,7 +1,7 @@
-import { AttributeAlias, TableAlias } from "./alias";
-import { Attribute, Table } from "./db";
-import { Aggregation, BooleanModifier, Datatype, Joins, Modifier } from "./dbStructure";
-import { QueryBuilder, selectQuery } from "./query";
+import { AttributeAlias, TableAlias } from "./alias.js";
+import { Attribute, Table } from "./db.js";
+import { Aggregation, BooleanModifier, Datatype, Joins, Modifier } from "./dbStructure.js";
+import { QueryBuilder, selectQuery } from "./query.js";
 
 export type primaryData = string | number | boolean | null;
 export type allModifierInput = primaryData | Modifier | selectQuery | Attribute | AttributeAlias | Aggregation;
diff --git a/tsconfig.json b/tsconfig.json
index 408ec89..cca6c8f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,7 @@
 {
   "compilerOptions": {
-    "module": "CommonJS",
+    "target": "ES6",
+    "module": "ES6",
     "lib": ["es6"],
     "types": ["node"],
     "declaration": true,