How can I reference an exported typescript class in my JavaScript file?

I have a JavaScript file that is going to upload a file to Microsoft Dynamics CRM. This JavaScript file references another JavaScript file via RequireJS. The JavaScript file it references was compiled from several Typescript files. The Typescript files set up a model to store the data to upload as well as the logic to interact with the Dynamics API. I have read through the Typescript/RequireJS documentation as well as several related SO questions, but I haven't been able to figure out how to get the define statement in RequireJS to work correctly so that I can use my model & Dynamics API logic from my JavaScript file. Am I correctly exporting my classes from Typescript? Am I correctly defining my import in JavaScript?

Model.ts

export class ExpenseTransaction extends ModelBase {

    public Field1: string;
    public Field2: number;
    .
    .
    .

    constructor() {
        super();
    }

    toJSON(): any {
        let json = {
            "[email protected]": this.Connection + "(" + this.Field1 + ")",
            "ccseq_Field2": this.Field2, 
             .
             .
             .               
        };

        return json;

    }

}

WebAPI.ts

import * as Model from './Model';

export class ExpenseTransaction extends APIBase {

constructor() {
    super();
}

ConvertToEntity = (data: Array<Object>): Array<Model.ExpenseTransaction> => {
    let result: Array<Model.ExpenseTransaction> = new Array<Model.ExpenseTransaction>();
    for (let i: number = 0; i < data.length; i++) {

        let newRecord: Model.ExpenseTransaction = new Model.ExpenseTransaction();

        newRecord.Field1 = data[i]["_Field1_value"];
        newRecord.Field2 = data[i]["ccseq_Field2"];

        result[i] = newRecord;
    }
    return result;
}

Get(): Promise<{}> {
    let expenses: Array<Model.ExpenseTransaction>;
    let self = this;
    return new Promise((resolve, reject) => {
        $.ajax({
            url: this.ExpenseTransaction,
            type: "GET",
            contentType: "application/json",
            dataType: "json",
            success: (data: any): void => {resolve(self.ConvertToEntity(data.value));},
            error: (data: any) => { reject(data.status); }
        });
    });
};

Create(expense: Model.ExpenseTransaction): Promise<{}> {
    return new Promise((resolve, reject) => {
        $.ajax({
            url: this.Connection,
            type: "POST",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            data: JSON.stringify(expense.toJSON()),
            success: (data: any): void => {resolve(data.value);},
            error: (data: any) => {reject(data.status);}
        });
    });
};
}

Compiled Typescript

define("CCSEQ/Model", ["require", "exports"], function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });

    class ExpenseTransaction extends ModelBase {
        constructor() {
            super();
        }
        toJSON() {
            let json = {
                "[email protected]": this.Connection + "(" + this.Field1 + ")",
                "ccseq_Field2": this.Field2
            };
            return json;
        }
    }
    exports.ExpenseTransaction = ExpenseTransaction;

define("CCSEQ/WebAPI", ["require", "exports", "CCSEQ/Model"], function (require, exports, Model) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });

    class ExpenseTransaction extends APIBase {
        constructor() {
            super();
            this.ConvertToEntity = (data) => {
                let result = new Array();
                for (let i = 0; i < data.length; i++) {
                    let newRecord = new Model.ExpenseTransaction();
                    newRecord.Field1 = data[i]["_Field1_value"];
                    newRecord.Field2 = data[i]["Field2"];
                    result[i] = newRecord;
                }
                return result;
            };
        }
        Get() {
            let expenses;
            let self = this;
            return new Promise((resolve, reject) => {
                $.ajax({
                    url: this.ExpenseTransaction,
                    type: "GET",
                    contentType: "application/json",
                    dataType: "json",
                    success: (data) => { resolve(self.ConvertToEntity(data.value)); },
                    error: (data) => { reject(data.status); }
                });
            });
        }
        ;
        Create(expense) {
            return new Promise((resolve, reject) => {
                $.ajax({
                    url: this.Connection,
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    data: JSON.stringify(expense.toJSON()),
                    success: (data) => { resolve(data.value); },
                    error: (data) => { reject(data.status); }
                });
            });
        }
        ;
    }
    exports.ExpenseTransaction = ExpenseTransaction;

JavaScript.js

    requirejs.config({
    bundles: {
        '../CCSEQ.Library': ['CCSEQ/Model']
    }
})

define(["require", "../jquery-3.1.1", "../papaparse.min", "CCSEQ/Model"], function (require, jquery, Papa, Model) {
    "use strict"; 
    $(document).ready(() => {
        //$("#loading").hide();
        setupHandlers();
    });
    function setupHandlers() {
        "use strict";
        $("#csv-file").change((e) => {
            //$("#loading").show();
            let file = e.target.files[0];
            if (!file) {
                return;
            }
            Papa.parse(file, {
                complete: (results) => {
                    ImportExpenseTransaction(results.data);
                }
            });
        });
    }
    function ImportExpenseTransaction(data) {
        let importData = new Array();
        data.forEach((expense) => {
            let newRecord = new Library.Model.ExpenseTransaction();
            newRecord.Field1 = expense["Field1"];
            newRecord.Field2 = expense["Field1"];
            importData.push(newRecord);
        });
        let expenseTransactionAPI = new ExpenseTransaction();
        expenseTransactionAPI.Create(importData[0]).then(() => { console.log("success"); }).catch(() => { console.log("failure"); });
    }
});