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Bun implements the Web-standard fetch API for sending HTTP requests. To send a simple GET request to a URL:
https://mintcdn.com/bun-1dd33a4e/Hq64iapoQXHbYMEN/icons/typescript.svg?fit=max&auto=format&n=Hq64iapoQXHbYMEN&q=85&s=c6cceedec8f82d2cc803d7c6ec82b240fetch.ts
const response = await fetch('https://bun.com');
const html = await response.text(); // HTML string
To send a POST request to an API endpoint.
https://mintcdn.com/bun-1dd33a4e/Hq64iapoQXHbYMEN/icons/typescript.svg?fit=max&auto=format&n=Hq64iapoQXHbYMEN&q=85&s=c6cceedec8f82d2cc803d7c6ec82b240fetch.ts
const response = await fetch('https://bun.com/api', {
	method: 'POST',
	body: JSON.stringify({message: 'Hello from Bun!'}),
	headers: {'Content-Type': 'application/json'},
});

const body = await response.json();