@sandsoftwaresolutions/validation

Tiny, composable form and API-input validators with no runtime dependencies.

Install

npm install @sandsoftwaresolutions/validation

Usage

import { email, minLength, required, validate } from "@sandsoftwaresolutions/validation";

const result = validate(form.password, [required, minLength(12)]);
if (!result.valid) showError(result.message);

validate(form.email, [required, email]);

API

• required(value, message?) rejects null, undefined, and empty/whitespace-only strings.
• email(value, message?) performs a lightweight email-address check.
• minLength(minimum, message?) creates a string validator.
• validate(value, validators) runs validators in order and returns the first failure.

Every result is either { valid: true } or { valid: false, message }, which makes it easy to use in forms and HTTP handlers. Validate and normalize security-sensitive input on the server as well.