How to easily make a type from a function's return value in TypeScript?

Learn how to use the `ReturnType` utility type to easily make a type from a function's return value in TypeScript

How to easily make a type from a function's parameters in TypeScript?

Learn how to use the `Parameters` utility type to easily make a type from a function's parameters in TypeScript

How to easily make a new type by removing null or undefined values from the union type in TypeScript?

Learn how to use the `NonNullable` utility type to easily make a new type by removing null or undefined values from the union type in TypeScript

How to easily make a new type by removing or excluding certain values from a union type in TypeScript?

Learn how to use the `Exclude` utility type to easily make a new type by removing or excluding certain values from a union type in TypeScript

How to easily make a new type by removing or omitting certain properties from another type in TypeScript?

Learn how to use the `Omit` utility type to easily make a new type by removing or omitting certain properties from another type in TypeScript

How to easily make a new type by taking or picking certain properties from another type in TypeScript?

Learn how to use the `Pick` utility type to easily make a new type by taking or picking certain properties from another type in TypeScript

How to easily make an object type that accepts only certain strings as keys in TypeScript?

Learn how to use the `Record` utility type to easily make an object type that accepts only certain strings as keys in TypeScript

How to easily make every property in a type alias or interface to readonly properties in TypeScript?

Learn how to use the `Readonly` utility type to easily make every property in a type alias or interface to readonly properties in TypeScript

How to easily make every property in a type alias or interface to required properties in TypeScript?

Learn how to use the `Required` utility type to easily make every property in a type alias or interface to required properties in TypeScript

How to easily make every property in a type alias or interface to optional properties in TypeScript?

Learn how to use the `Partial` utility type to easily make every property in a type alias or interface to optional properties in TypeScript

How to define and initialize protected readonly class fields in the constructor itself in TypeScript?

Learn how to define and initialize protected readonly class fields in the constructor itself in TypeScript

How to define and initialize private readonly class fields in the constructor itself in TypeScript?

Learn how to define and initialize private readonly class fields in the constructor itself in TypeScript

How to define and initialize public readonly class fields in the constructor itself in TypeScript?

Learn how to define and initialize public readonly class fields in the constructor itself in TypeScript

How to define and initialize protected class fields in the constructor itself in TypeScript?

Learn how to define and initialize protected class fields in the constructor itself in TypeScript

How to define and initialize private class fields in the constructor itself in TypeScript?

Learn how to define and initialize private class fields in the constructor itself in TypeScript

How to define and initialize public class fields in the constructor itself in TypeScript?

Learn how to define and initialize public class fields in the constructor itself in TypeScript