[{"id":"1a8da69a-ccc9-404a-9a90-9013c4ce4495","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":2},"content":[{"type":"text","text":"Why You Should Use Type Instead of Interface in TypeScript","styles":{"bold":true}}],"children":[]},{"id":"6a0d5c93-1333-495a-a15e-3ed0d6ec2648","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"TypeScript provides two main ways to define the shape of an object: type and interface. While both can be used interchangeably in many cases, there are specific scenarios where type offers more flexibility and power. This blog will explore these scenarios and explain why you might prefer type over interface.","styles":{}}],"children":[]},{"id":"2c599b38-f3e3-4af7-aea3-18dccffd2bd4","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"Key Differences:","styles":{}}],"children":[]},{"id":"3e5710a0-cd91-4eb7-ab0a-368940f4be67","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"1. Union Types","styles":{"bold":true}}],"children":[]},{"id":"24325ab5-18f8-409c-9063-984670a4d211","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" can define union types, which an ","styles":{}},{"type":"text","text":"interface","styles":{"bold":true}},{"type":"text","text":" cannot.","styles":{}}],"children":[]},{"id":"1582624e-d92e-4f1f-a4a1-74dc6b064db4","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type Result = Success | Failure;","styles":{}}],"children":[]},{"id":"aacc5880-d5c5-4b1a-9be8-a62e519f7f4c","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"2. Intersection Types","styles":{"bold":true}}],"children":[]},{"id":"68b495a1-1512-40a6-a855-cb8e26a42de1","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" can define intersection types.","styles":{}}],"children":[]},{"id":"2c2b9178-fe4b-40a6-9629-cd0b4c0e90f8","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type Combined = TypeA & TypeB;","styles":{}}],"children":[]},{"id":"dd902c66-a3a1-4306-a468-0186bfb96aea","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"3. Primitive Types","styles":{"bold":true}}],"children":[]},{"id":"a11a61f2-e30c-4e7e-afae-af6f43508add","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" can alias primitive types.","styles":{}}],"children":[]},{"id":"17e39aaa-f2db-481a-b06f-570603bd2e09","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type StringAlias = string;","styles":{}}],"children":[]},{"id":"1274d33e-9185-4654-8d51-78fc3ea700bc","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"4. Tuples","styles":{"bold":true}}],"children":[]},{"id":"0ca891d3-0253-4624-8047-98d894672b01","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" can define tuples","styles":{}}],"children":[]},{"id":"cf95f35e-bd7b-42dd-a2e5-8dd58517b20d","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type Tuple = [number, string];","styles":{}}],"children":[]},{"id":"035b0cf7-759c-4af1-a8b1-74256bcb16c0","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"5. Mapped Types","styles":{"bold":true}}],"children":[]},{"id":"3f794124-7939-4ce2-a48b-5892c1bbda06","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" can create mapped types","styles":{}}],"children":[]},{"id":"2e475885-057e-4f18-bb4f-0c63a41721d5","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type Readonly = { readonly [P in keyof T]: T[P]; };","styles":{}}],"children":[]},{"id":"7e4d9e1b-65b9-4d39-929c-397b7596a199","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"6. Complex Type Constructs","styles":{"bold":true}}],"children":[]},{"id":"8d3cfcf8-43f2-44bc-8d36-6a8afef43101","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" can define more complex type constructs like conditional types.","styles":{}}],"children":[]},{"id":"49c3ad56-a867-49da-be7a-ccfc98ead87d","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type Conditional = T extends string ? string : number;","styles":{}}],"children":[]},{"id":"17af3237-cd43-4a32-966e-891f994d8ec8","type":"quote","props":{"textColor":"default","backgroundColor":"default"},"content":[{"type":"text","text":"Let's consider a React component where we define the props using type instead of interface.","styles":{}}],"children":[]},{"id":"3bd1023f-41d6-4d1c-bfbb-4cdfa8f528a9","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"7. Union Types in React component","styles":{"bold":true}}],"children":[]},{"id":"6579a126-b86b-493b-9b0f-6f1de487d19a","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"// Case type\ntype ButtonProps = {\n label: string; \n onClick: () => void; \n variant: 'primary' | 'secondary';\n}\n\nconst Button: React.FC = ({ label, onClick, variant }) => {\n return ( \n \n ); \n};\n\n// Case interface \n// This is not possible with interface\ninterface ButtonProps {\n label: string;\n onClick: () => void;\n variant: 'primary' | 'secondary'; // Error: String literal types are not allowed in interfaces\n}","styles":{}}],"children":[]},{"id":"bff38838-6093-47d1-8d0c-8a74acd3bcd4","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[],"children":[]},{"id":"696d8d16-8d2c-4187-be91-9e9363818bf5","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"8. Intersection Types in React component","styles":{"bold":true}}],"children":[]},{"id":"1e37a6d6-745c-44bb-9ccb-d9a8b48f62a2","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"When you need to combine multiple types, the ","styles":{}},{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" is more flexible.","styles":{}}],"children":[]},{"id":"2113f887-e475-4689-9f05-0598b4594a39","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type BaseProps = { id: string; };\ntype AdvancedProps = { isActive: boolean; };\n\ntype CombinedProps = BaseProps & AdvancedProps;\n\nconst Component: React.FC = ({ id, isActive }) => {\n return ( \n

\n Content \n

\n ); \n}","styles":{}}],"children":[]},{"id":"695d5754-8103-46b7-ad71-adb37877078c","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"9. Tuples in React component","styles":{"bold":true}}],"children":[]},{"id":"4cd7d46a-e567-4a96-98d2-e72133048dc6","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"When you need to define a tuple type, ","styles":{}},{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" is the only option.","styles":{}}],"children":[]},{"id":"6bfec6d1-18a7-4594-a4d2-c174dd3fefb6","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type TupleProps = { coordinates: [number, number]; };\n\nconst CoordinateDisplay: React.FC = ({ coordinates }) => {\n return ( \n

\n X: {coordinates[0]}, Y: {coordinates[1]} \n

\n ); \n};","styles":{}}],"children":[]},{"id":"8e446d64-7278-4ad1-86e6-44cb9eb3d014","type":"quote","props":{"textColor":"default","backgroundColor":"default"},"content":[{"type":"text","text":"Using interface ","styles":{}},{"type":"text","text":"(Not Possible)","styles":{"bold":true,"italic":true}}],"children":[]},{"id":"11564019-ba9a-4147-9b1a-74690af84e46","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"10. Mapped Types in React component","styles":{"bold":true}}],"children":[]},{"id":"1013fb58-4fa8-49c7-affc-012d8e0c700a","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"When you need to create a mapped type, ","styles":{}},{"type":"text","text":"type","styles":{"bold":true}},{"type":"text","text":" is more suitable.","styles":{}}],"children":[]},{"id":"b891cb3b-9032-42f8-814f-f886837744e0","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"type ReadonlyProps = { readonly [P in keyof T]: T[P]; };\n\ntype UserProps = { name: string; age: number; };\n\ntype ReadonlyUserProps = ReadonlyProps;\n\nconst UserComponent: React.FC = ({ name, age }) => {\n return ( \n

\n Name: {name}, Age: {age} \n

\n );\n}","styles":{}}],"children":[]},{"id":"e6e2e773-b363-4154-ab1d-67487f324110","type":"quote","props":{"textColor":"default","backgroundColor":"default"},"content":[{"type":"text","text":"Using interface","styles":{}},{"type":"text","text":" ","styles":{"italic":true}},{"type":"text","text":"(Not Possible)","styles":{"bold":true,"italic":true}}],"children":[]},{"id":"0bf9b6ae-b4b9-4af0-9f6c-38e2451b4f82","type":"codeBlock","props":{"language":"text"},"content":[{"type":"text","text":"// This is not possible with interface\ninterface ReadonlyProps {\n readonly [P in keyof T]: T[P]; // Error: Mapped types are not allowed in interfaces\n}","styles":{}}],"children":[]},{"id":"45d7eb9a-e879-415d-ba31-9cdce6b15743","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[],"children":[]},{"id":"d3b09a47-87a7-467f-9b2f-c72b82108453","type":"heading","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left","level":3},"content":[{"type":"text","text":"Conclusion","styles":{"bold":true}}],"children":[]},{"id":"547534bd-7d8e-48f1-a2b6-d59f94219297","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"While interface is useful for defining object shapes that are intended to be extended or implemented by classes, type offers more versatility and power for defining complex types. By understanding the type's strengths, you can make more informed decisions in your TypeScript projects.","styles":{}}],"children":[]},{"id":"c7435689-7cf4-4658-90ea-0c7ba9ad30d2","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"In summary, use type when you need:","styles":{}}],"children":[]},{"id":"a8a9a584-6180-49a3-bdf2-2f5562a4a32a","type":"bulletListItem","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"Union types","styles":{}}],"children":[]},{"id":"7d6c9d80-7e15-4c21-b809-ad2d5b5e7adc","type":"bulletListItem","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"Intersection types","styles":{}}],"children":[]},{"id":"303c1e26-0b52-4261-a589-d6dcc3255cc2","type":"bulletListItem","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"Primitive type aliases","styles":{}}],"children":[]},{"id":"3ed7b035-27b7-4ab4-99d3-731c50ae87aa","type":"bulletListItem","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"Tuples","styles":{}}],"children":[]},{"id":"7f5a18fa-0642-40e1-9ae6-96481812b81d","type":"bulletListItem","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"Mapped types","styles":{}}],"children":[]},{"id":"daf845f7-f147-4bcf-b68d-51626b0a3fce","type":"bulletListItem","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"Complex type constructs like conditional types","styles":{}}],"children":[]},{"id":"1170e563-2b07-4f7e-ab9d-fc43ab507192","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[{"type":"text","text":"This flexibility makes type a better choice in many scenarios.","styles":{}}],"children":[]},{"id":"2c2cc28f-517c-4669-aeae-0b9b2e110464","type":"paragraph","props":{"textColor":"default","backgroundColor":"default","textAlignment":"left"},"content":[],"children":[]}]

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