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simple-typed-fetch
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This package provides utility functions for making HTTP requests with validation using the zod schema validation library. It handles various error cases, client and server errors, and offers an additional simpleFetch
wrapper function for easier usage.
To install the required dependencies for this package, run:
npm install simple-typed-fetch
The fetchWithValidation
function is an async function that takes the following parameters:
url
(string): The URL to fetch data from.schema
(Schema): The zod schema for validating the response data.options
(RequestInit, optional): Optional fetch options (like method, headers, etc.).errorSchema
(Schema, optional): The zod schema for validating error responses (4xx status codes).
The function returns a Result
object from the neverthrow
library, which can be either an Ok
or an Err
variant. If the response is successfully validated, the function returns an Ok
variant with the validated data. In case of an error, it returns an Err
variant with error details.The simpleFetch
function is a higher-order function that wraps the fetchWithValidation
function and automatically throws an error in case of an Err
result. This function is useful when you prefer working with exceptions rather than Result
objects.
This package uses the neverthrow
library for error handling. It provides a detailed error object in case of an error, containing the following properties:
type
(string): A string describing the error type.url
(string): The URL where the error occurred.message
(string): A human-readable error message.status
(number, optional): The HTTP status code of the response (for 4xx and 5xx status codes).error
(Error, optional): The original error object (for some error cases).text
(string, optional): The response text (for some error cases).Here's an example of how to use the fetchWithValidation
function with a zod schema:
import { z } from "zod";
import { fetchWithValidation } from "simple-typed-fetch";
const userSchema = z.object({
id: z.number(),
name: z.string(),
});
async function fetchUser(userId: number) {
const result = await fetchWithValidation(
`https://api.example.com/users/${userId}`,
userSchema
);
if (result.isErr()) {
console.error("Error fetching user:", result.error.message);
return;
}
console.log("Fetched user:", result.value);
}
And here's an example of how to use the simpleFetch
function:
import { z } from "zod";
import { simpleFetch } from "simple-typed-fetch";
const userSchema = z.object({
id: z.number(),
name: z.string(),
});
const fetchUser = simpleFetch(async (userId: number) =>
fetchWithValidation(`https://api.example.com/users/${userId}`, userSchema)
);
(async () => {
try {
const user = await fetchUser(1);
console.log("Fetched user:", user);
} catch (error) {
console.error("Error fetching user:", error.message);
}
})();
FAQs
Making HTTP requests human way
The npm package simple-typed-fetch receives a total of 15 weekly downloads. As such, simple-typed-fetch popularity was classified as not popular.
We found that simple-typed-fetch demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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