Creating functions with Partial Type Parameters
In TypeScript, you can use partial types to define functions with optional or partial type parameters. This approach allows you to create functions that accept objects with only a subset of properties, providing flexibility and ensuring type safety.
Syntax:
type PartialParams = Partial<{ prop1: type1; prop2: type2; }>;
function partialFunction(params: PartialParams) {
// Function implementation
}
Example: The below code explains the way of creating functions that accept the parameters of partial type.
Javascript
type PartialParams = Partial<{ prop1: string; prop2: number; }>;function partialFunction(params: PartialParams) { console.log("Received params:", params);}partialFunction({ prop1: "Hello" });partialFunction({ prop2: 42 });partialFunction({ prop1: "Hello", prop2: 42 }); |
Output:
Received params: { prop1: 'Hello' }
Received params: { prop2: 42 }
Received params: { prop1: 'Hello', prop2: 42 }
How to Use Partial Types in TypeScript ?
Partial types in TypeScript offer a versatile solution for creating new types with a subset of properties from existing types. This feature proves invaluable in scenarios where you need to work with incomplete data structures or define flexible interfaces.
Below are the approaches to using partial types in TypeScript:
Table of Content
- Using the Partial
Utility Type - Creating functions with Partial Type Parameters
- Using Partial Types with Mapped Types
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