fix typo though → through

a minor typo I found

Author: natesilva

lib/models/BaseSequelize.ts

@@ -16,7 +16,7 @@ import {ISequelizeAssociation} from "../interfaces/ISequelizeAssociation";
  */
 export abstract class BaseSequelize {
 
-  thoughMap: { [through: string]: any } = {};
+  throughMap: { [through: string]: any } = {};
   _: { [modelName: string]: (typeof Model) } = {};
 
   static extend(target: any): void {

lib/models/v3/Sequelize.ts

@@ -15,7 +15,7 @@ export class Sequelize extends SequelizeOrigin implements BaseSequelize {
   // to fix "$1" called with something that's not an instance of Sequelize.Model
   Model: any = Function;
 
-  thoughMap: { [through: string]: any } = {};
+  throughMap: { [through: string]: any } = {};
   _: { [modelName: string]: typeof Model } = {};
   init: (config: ISequelizeConfig) => void;
   addModels: (models: Array<typeof Model> | string[]) => void;

lib/models/v4/Sequelize.ts

@@ -11,7 +11,7 @@ let preparedConfig;
 
 export class Sequelize extends OriginSequelize implements BaseSequelize {
 
-  thoughMap: {[through: string]: any} = {};
+  throughMap: {[through: string]: any} = {};
   _: {[modelName: string]: typeof Model} = {};
   init: (config: ISequelizeConfig) => void;
   addModels: (models: Array<typeof Model>|string[]) => void;

lib/services/association.ts

@@ -227,12 +227,12 @@ export function processAssociation(sequelize: BaseSequelize,
 export function getThroughClass(sequelize: BaseSequelize,
                                 association: ISequelizeAssociation): any {
   if (association.through) {
-    if (!sequelize.thoughMap[association.through]) {
+    if (!sequelize.throughMap[association.through]) {
       const throughModel = sequelize.getThroughModel(association.through);
       sequelize.addModels([throughModel]);
-      sequelize.thoughMap[association.through] = throughModel;
+      sequelize.throughMap[association.through] = throughModel;
     }
-    return sequelize.thoughMap[association.through];
+    return sequelize.throughMap[association.through];
   }
   return (association.throughClassGetter as () => typeof Model)();
 }