So right now I'm simply testing to see if I can create and store some info in a Javascript file using a custom TypeScript class object. Before testing I'm running the command 'tsc courses.ts' followed by 'node app.js' It says its working and running on the port I specified but when I go to the page it break and says there is a reference error when doing 'let aCourse = new CourseObject' CourseObject is not defined.

Any ideas on how I might fix this?

courses.ts

class CourseObject {
    courseNumber: number;       
    courseName: string;
    courseDescription: string;
    credits: number;
    preRequisites: string;
    
    constructor(courseNumber: number, courseName: string, courseDescription: string,
                credits: number, preRequisites: string){
        this.courseNumber       = courseNumber;     
        this.courseName         = courseName;
        this.courseDescription  = courseDescription;
        this.credits            = credits;
        this.preRequisites      = preRequisites;
    }
}

app.js

... omitted for brevity ...

response.writeHead(200, {"Content-Type": "text/html"});
            
            let courses = [];
            let aCourse = new CourseObject();

... omitted for brevity ...

EDIT FIXED ran tsc --init to generatea tsconfig.json file. module: commonjs and target es2016

then changed code to: courses.ts

export class CourseObject{ ... }

and app.js added

const CourseObject = require(PATH/courses.js).CourseObject

Thanks @CRice for the help!