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@effect/schema

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@effect/schema

Modeling the schema of data structures as first-class values

  • 0.53.2
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  • npm
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Version published
Weekly downloads
937K
increased by5.3%
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3
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Created

What is @effect/schema?

@effect/schema is a TypeScript library for defining and validating schemas. It provides a way to define the structure of data, validate it, and transform it. The library is designed to be type-safe and integrates well with TypeScript's type system.

What are @effect/schema's main functionalities?

Defining Schemas

You can define schemas using the @effect/schema package. In this example, a schema for a user object is defined with 'name' as a string and 'age' as a number.

const { Schema, string, number } = require('@effect/schema');

const userSchema = Schema({
  name: string,
  age: number
});

Validating Data

The @effect/schema package allows you to validate data against a defined schema. In this example, a user object is validated against the userSchema. If the data is valid, it prints the valid user; otherwise, it prints the validation errors.

const { validate } = require('@effect/schema');

const user = { name: 'John Doe', age: 30 };
const result = validate(userSchema, user);

if (result.isValid) {
  console.log('Valid user:', result.value);
} else {
  console.log('Validation errors:', result.errors);
}

Transforming Data

You can also transform data to match the schema. In this example, the age property of the user object is transformed from a string to a number to match the userSchema.

const { transform } = require('@effect/schema');

const user = { name: 'John Doe', age: '30' };
const transformedUser = transform(userSchema, user);

console.log('Transformed user:', transformedUser);

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Package last updated on 13 Dec 2023

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