revalidator

library0.3.1jsnpmunverified

A cross-browser / Node.js validator with JSON Schema compatibility (draft-zyp-json-schema-04). Current stable version is 0.3.1, last released in 2015, no longer actively maintained. It provides a simple `validate(obj, schema)` function that returns `valid` boolean and `errors` array. Key differentiator is lightweight footprint and support for both Node.js and browser environments, but lacks modern JSON Schema features and complete format validation.

testing

npm install revalidator

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · REVALIDATOR

revalidator

testingjavascriptv0.3.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

revalidator

✓ import revalidator from 'revalidator'

✗ import { revalidator } from 'revalidator'

Default export only; named import will be undefined.

revalidator

✓ const revalidator = require('revalidator')

✗ const { revalidator } = require('revalidator')

CommonJS style: direct require gets the default export.

validate

✓ const { validate } = revalidator

✗ import { validate } from 'revalidator'

validate is a method on the default export, not a named export. Must destructure after importing.

Shows basic usage of revalidator.validate() with a JSON Schema and an object, including optional error handling.

import revalidator from 'revalidator'; const schema = { properties: { name: { type: 'string', required: true, minLength: 2 }, age: { type: 'integer', minimum: 0 }, email: { type: 'string', pattern: '^[^@]+@[^@]+\.[^@]+$' } } }; const obj = { name: 'Alice', age: 30, email: 'alice@example.com' }; const result = revalidator.validate(obj, schema); console.log('Valid:', result.valid); if (!result.valid) { console.log('Errors:', result.errors); }

Debug

Known issues

deprecatedThe package is no longer maintained and may not work with newer Node.js versions.

fix

Consider migrating to a more modern validator like ajv or joi.

affects: >=0.3.1

gotchaThe validate method mutates the options object passed to it?

fix

Always pass a fresh options object if reusing the same schema with different options.

affects: >=0.3.0

gotchaThe 'additionalProperties' option defaults to true, meaning extra properties in the object are allowed unless explicitly set to false.

fix

Set additionalProperties: false in options to disallow unknown properties.

affects: >=0.3.0

gotchaThe 'type' property supports arrays (e.g., ['boolean', 'string']) but only validates against the first matching type?

fix

Use single type definitions for clarity.

affects: >=0.3.0

gotchaFormat validation is limited; for example, 'email', 'date', 'uri' are not validated unless registered via formatExtensions.

fix

Provide custom format validators or use a validator with built-in format support.

affects: >=0.3.0

Errors

Common errors & fixes

TypeError: revalidator.validate is not a function

Using named import instead of default import.

fix

Use: import revalidator from 'revalidator'; then revalidator.validate(...)

Cannot find module 'revalidator'

Package not installed.

fix

Run: npm install revalidator

Validation returns valid: true for extra properties when additionalProperties is false?

additionalProperties option only works at the root level, not nested schemas.

fix

Use a validator that supports recursive additionalProperties checks.

Upgrade

Version history

0.3.1latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

10 hits · last 30 days

node

Resources

githubhttp://github.com/flatiron/revalidator ↗

packagerevalidator ↗

homepagehttps://github.com/flatiron/revalidator ↗