har-guard

TypeScript-first HAR 1.2 validation helpers.

har-validator is no longer supported. This package provides a dependency-free validation core for common HAR ingestion paths: structured issues, assertion errors, type guards, and promise wrappers for migration.

Install

npm install har-guard

Usage

import { assertHar, validateHar } from "har-guard";

const result = validateHar(data);

if (!result.valid) {
  console.error(result.issues);
}

assertHar(data);

API

validateHar(value)

Returns { valid, issues, value }.

assertHar(value)

Throws HarValidationError when invalid.

isHar(value)

Boolean type guard.

validateRequest(value), validateResponse(value), validateEntry(value)

Validate common HAR fragments.

Promise migration wrappers

har(value), request(value), response(value), and entry(value) return a promise that resolves with the valid value or rejects with HarValidationError.

Migration Position

har-guard is an independent alternative or migration helper for projects moving away from har-validator. It is not affiliated with the original package maintainers or project.

For release context, see the local migration guide, examples, compatibility notes, source metadata, and adoption plan.