Microsoft Guaranteed-to-Run

TypeScript Beginner

TypeScript by Open Source is the essential solution for building scalable, error-resistant applications, effectively solving the critical pain point of runtime bugs and technical debt in large JavaScript codebases. With TypeScript ranking as GitHub’s number one language in 2025 and used by over 78 percent of developers, this course delivers advanced type system mastery to help you design maintainable architectures. Gain the skills required to excel in modern, type-safe development environments and position yourself for roles with median salaries over 186,750 dollars for Senior Frontend positions in the US.

8 Hours (1 Days)
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Training Formats & Pricing

1-on-1 USD 900
Dedicated instructor, your schedule Fastest
Public Batch USD 600
Group class, fixed schedule Most Popular
Self-Paced On Request
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Course Overview

The TypeScript course by Open Source is designed for developers seeking to master type-safe JavaScript development, particularly those transitioning into roles such as Frontend Engineer, Full Stack Developer, or Software Engineer. While no official certification exam is tied directly to TypeScript, this course aligns with modern web development standards and prepares learners for real-world implementation in enterprise environments. With 67% of developers now writing more TypeScript than JavaScript according to the 2024 State of JavaScript survey, demand for type-safe coding practices has surged across tech stacks. This course serves professionals aiming to enhance code quality, reduce runtime errors, and meet industry expectations in scalable application development.

Students engage with core tools including TypeScript Compiler (tsc), tsconfig.json, Visual Studio Code, Babel, Webpack, and Node.js, gaining fluency in configuring build pipelines and development environments. The hands-on lab component uses a local VS Code environment integrated with npm and tsc to build a full-stack TypeScript application featuring strict type checking, interfaces, generics, and module resolution. A key project involves constructing a type-safe REST API client with discriminated unions and conditional types, simulating real-world scenarios encountered in React, Angular, and NestJS ecosystems. These labs emphasize incremental compilation, declaration file generation, and integration with JavaScript libraries through ambient declarations.

Although there is no vendor-specific certification for TypeScript, mastery of the language significantly boosts career readiness and is recognized implicitly through proficiency in frameworks like Angular and React. Developers with TypeScript skills command competitive salaries, with a median of $186,750 reported on Kibo Careers in 2026. At Koenig Solutions, students benefit from Guaranteed-to-Run classes and access to official courseware aligned with Microsoft’s open-source TypeScript specifications. By completing this program, learners are positioned to advance into senior development roles where type safety, maintainability, and collaboration in large-scale codebases are critical success factors in modern software engineering careers.

What You'll Learn

✓Master TypeScript type annotations for variables and functions to write clearer, type-safe code, enhancing project reliability and reducing bugs.
✓Define object types and interfaces in TypeScript to create structured, maintainable code that accurately models complex data structures.
✓Apply union and intersection types using TypeScript syntax to handle multiple data types and combine interfaces, increasing code flexibility.
✓Configure TypeScript compiler options via tsconfig.json to optimize build processes, improve code quality, and enforce coding standards.
✓Manage module resolution and imports in TypeScript projects to organize code efficiently, streamline development, and ensure smooth project scaling.
✓Utilize generics and utility types in TypeScript development to create reusable, flexible components that adapt to various data types, boosting productivity and code consistency.

Prerequisites

Recommended knowledge before taking this course
  • Basic knowledge of JavaScript: Since TypeScript is a superset of JavaScript, understanding JavaScript syntax and concepts is essential.
  • Familiarity with programming concepts: Participants should understand fundamental programming concepts such as variables, loops, functions, and objects.
  • Experience with a text editor or IDE: Students should be comfortable using a text editor or Integrated Development Environment (IDE) for coding.
  • Understanding of HTML and CSS (optional): While not strictly necessary, knowledge of HTML and CSS can be beneficial, as TypeScript is often used in web development projects.
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Certification Exam

Everything you need to know about the JSE-40-01 Exam certification exam

Exam Details
Exam Name
JSE-40-01 Exam
Format
Multiple choice, labs & case studies
Questions
Duration
Passing Score
Validity
Retake Policy
Not applicable
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TypeScript

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Course Curriculum

Structured learning with hands-on labs and real-world scenarios

1
Day 1– Mastering TypeScript Everyday Types
Define variable type annotations Manage string, number, boolean primitives Handle null and undefined values Implement arrays and object structures Master TypeScript type inference logic Apply union types for flexibility Perform narrowing using typeof checks Utilize literal types for precision
2
Day 2– TypeScript Functions and Objects
Define function parameters and returns Set optional and default parameters Type safe arrow function syntax Structure objects with defined properties Apply index signatures for objects Create reusable object type aliases Compare interfaces versus type aliases Enforce readonly and optional properties
3
Day 3– Advanced TypeScript Type Manipulation
Build generics for reusable components Utilize keyof operator for keys Extract types with typeof operator Access types via indexed lookups Implement complex conditional types Transform structures with mapped types Construct dynamic template literal types Use Partial and Required utility types
4
Day 4– TypeScript Classes and Inheritance
Define class properties and methods Control access with public, private Optimize code with parameter properties Extend base classes using extends Architect systems with abstract classes Implement interfaces for class contracts Manage static members and helpers Enforce this typing in classes
5
Day 5– TypeScript Modules and Project Setup
Master ES Modules import/export syntax Configure module resolution strategies Initialize professional tsconfig.json files Optimize compiler target and module Enable strict mode for reliability Generate declaration files for libraries Compare namespaces versus modern modules Manage complex project references setup

What's Included in Your Training

Every enrollment comes packed with resources to maximise your learning and exam success

Career Outcomes

85%

of JSE-40-01 Exam certified professionals report career advancement within 6 months

Salary Impact

+28%

Average salary increase reported after obtaining the JSE-40-01 Exam certification

Typical Salary Range (Global)
Entry$90,000–$115,000
Mid$115,000–$145,000
Senior$145,000–$180,000

*Source: Glassdoor / LinkedIn 2025

Job Roles

6
  • Senior TypeScript Developer
  • Full-Stack Engineer
  • Frontend Engineer (React/TypeScript)
  • Backend Engineer (Node.js/NestJS)
  • Lead Software Engineer
  • Platform Engineer

Companies Hiring

5,000+
Microsoft Google Amazon Accenture Deloitte Infosys TCS Goldman Sachs Netflix Spotify

and 5,000+ organizations worldwide seeking JSE-40-01 Exam certified professionals

Real Transformations

Course Student Reviews

Real results from IT professionals who trained with Koenig — rated 4.9/5 from 18,400+ verified reviews.

18,400+
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    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

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    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

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    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

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  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

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  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

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    James T.

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  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

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    SC-300 Certified ✓ Verified
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    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

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    AI-102 Certified ✓ Verified
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    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified

Frequently Asked Questions

Everything you need to know about the JSE-40-01 Exam training course

Is the TypeScript certification exam fee included in the Koenig TypeScript course price, and what is the cost if purchased separately?
The TypeScript certification exam is not included in the Koenig course fee and must be purchased separately. The W3Schools Certified TypeScript Developer exam costs $95 USD, while the CERTQA CCTD exam is priced at $160. These vendor-authorized exams are independent of training.
What training formats does Koenig offer for TypeScript, and is Guaranteed-to-Run scheduling available for students?
Koenig provides TypeScript training via live online, classroom, and 1-on-1 formats, all featuring Guaranteed-to-Run scheduling. Public batches proceed regardless of enrollment, and self-paced Flexi options include recorded access. Expert instructors deliver training in English across all global time zones.
How long is lab access provided, and what type of environment is used for Koenig TypeScript labs?
Lab access for TypeScript training is provided for 30 days via cloud-based sandbox environments like GitHub Codespaces. These browser-accessible platforms require no local setup and include preconfigured tools for hands-on practice with generics, interfaces, and real-world projects in a secure, scalable workspace.
What is the official Koenig rescheduling and cancellation policy for TypeScript training enrollments?
Koenig allows free rescheduling of TypeScript training if requested more than 10 days before the start date. Rescheduling or cancellation within 10 days incurs a 50% fee of the total purchase amount, and the same training session cannot be rescheduled more than once.
What is the format, number of questions, passing score, and time limit for the TypeScript certification exam?
The W3Schools TypeScript exam features an adaptive format with 60 multiple-choice questions, a 60-minute time limit, and requires a 40% score to pass. The CERTQA CCTD exam includes 50 MCQs and one practical exercise, lasts 75 minutes, and requires 70% to pass.
How long is the TypeScript certification valid, and what is the renewal process and cost for professionals?
The W3Schools Certified TypeScript Developer credential is valid for life with no expiration or renewal requirements. Similarly, Vskills' Certified TypeScript Professional certification does not expire, eliminating recurring fees and providing permanent recognition of skills without the need for mandatory recertification assessments.
What post-training support does Koenig provide after completing the TypeScript course?
Koenig provides 30 days of post-training support including mentor access, session recordings, and hands-on lab access. Learners also receive a certificate of completion and six months of video access with exam preparation resources to reinforce learning and support long-term career advancement.
What are the prerequisites or prior experience needed before taking the TypeScript course by Open Source?
Learners should have solid knowledge of JavaScript (ES6+), familiarity with object-oriented programming (OOP), and experience using npm, Webpack, or Babel. Advanced TypeScript training targets developers with 2+ years of web development experience to fully grasp generics, decorators, and type-safe architectures.
What salary increase or career impact can I expect after earning a TypeScript certification?
Certified TypeScript developers command median salaries of $186,750, with senior roles ranging from $155,000 to $190,000 in the U.S. Certification validates expertise in type-safe development, increasing employability and positioning professionals for leadership roles in high-demand markets like the San Francisco Bay Area.
How does instructor-led TypeScript training compare to self-study in terms of outcomes and effectiveness?
Instructor-led TypeScript training delivers structured learning with real-time feedback, hands-on labs, and guaranteed scheduling, resulting in higher mastery of advanced concepts like conditional types. Self-study lacks personalized guidance; only 40% of self-taught developers demonstrate deep type-system proficiency compared to 85% in guided programs.

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