TypeScript Online Test
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The TypeScript online test assesses knowledge of programming in the TypeScript language through a series of live coding tasks.
The assessment includes work-sample tasks such as:
- Applying OOP principles in TypeScript to write reusable code.
- Using Mixins to build classes from reusable components.
- Modifying arrays and strings using common built-in functions.
A good TypeScript developer needs a solid understanding of the TypeScript programming language and know how to effectively use its type system.
Sample public questions
The Circle class is used in a prototype for a game engine. Finish the class so that:
- It inherits from the GameObject class
- It has one more public field, radius
- It has only one constructor, that sets the radius, and sets the x and y fields using the GameObject class
For example, executing the following code:
let circle = new Circle(10, 50, 8);
console.log(circle.x, circle.y, circle.radius);
should print "10 50 8".
Extend the Permission enum so that it has the following fields:
- Read, which should have a value of 1
- Write, which should have a value of 2
- Execute, which should have a value of 4
Extend the getPermissionList function so that it accepts a combination of several Permission enums and returns an array of strings which are the names of the Permissions.
For example, executing:
getPermissionList(Permission.Read | Permission.Write);
should return [ 'Read', 'Write' ] in any order.
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8 more premium TypeScript questions
Garden Plants, Open Interface, Person, Height, Taxable Book, Album, First Not Null, Filter.
Skills and topics tested
- TypeScript
- OOP
- Spread
- Arithmetic
- Language
- Objects
- Inheritance
- Union Types
- Arrays
For job roles
- TypeScript Developer
Sample candidate report
What others say
Simple, straight-forward technical testing
TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.
Jan Opperman, Grindrod Bank
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