Registry / devops / zod-package-json

zod-package-json

library2.1.0jsnpmunverified

A Zod v4 schema for validating full package.json files. Version 2.1.0 is latest, actively maintained, and requires Node >=20 and Zod ^4.0.0 as a peer dependency. It covers all npm-documented properties plus TypeScript- and Node-specific fields, preserves unknown properties, and exports both classic Zod and Zod mini schemas. Compared to ad‑hoc schemas, it is comprehensive, typed, and kept current with npm's docs.

devops

npm install zod-package-json

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · ZOD-PACKAGE-JSON

zod-package-json

devopsjavascriptv2.1.0

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.

PackageJson

✓ import { PackageJson } from 'zod-package-json'

✗ const PackageJson = require('zod-package-json')

ESM-only since v2. CommonJS require() will fail with ERR_REQUIRE_ESM.

PackageJson (mini schema)

✓ import { PackageJson } from 'zod-package-json/mini'

✗ import { PackageJson } from 'zod-package-json' // this gives the classic Zod schema, not mini

Use the /mini subpath import for the smaller Zod mini version. Types are built-in.

PackageJsonType (inferred type)

✓ import { PackageJson } from 'zod-package-json'; type Pkg = typeof PackageJson._type;

✗ import { PackageJsonType } from 'zod-package-json'

The package does not export an explicit type alias for the inferred type. Use Zod's _type property.

z (Zod object used internally)

✓ // Not exported directly; import zod separately

✗ import { z } from 'zod-package-json'

This package does not re-export Zod. Always import zod separately: import { z } from 'zod'.

Parse a package.json file, access known and unknown properties, and handle parse errors with safeParse.

import { PackageJson } from 'zod-package-json'; import { readFileSync } from 'fs'; const raw = JSON.parse(readFileSync('./package.json', 'utf-8')); const pkg = PackageJson.parse(raw); console.log(pkg.name, pkg.version); // Access unknown properties via string index const extra = pkg['myCustomField']; // unknown preserved console.log(extra); // Parse failure example const result = PackageJson.safeParse({ version: 'not-semver' }); if (!result.success) { console.error(result.error.issues); }

Debug

Known issues

breakingVersion 2.x is ESM-only. require() will throw ERR_REQUIRE_ESM.

fix

Use dynamic import() or switch to ESM (e.g., "type": "module" in your package.json).

affects: >=2.0.0

breakingPeer dependency Zod v4 required; Zod v3 not supported.

fix

Install zod@^4.0.0 alongside this package.

affects: >=2.0.0

gotchaThe default export is not a function; must use named import { PackageJson }.

fix

Use import { PackageJson } from 'zod-package-json' (or '/mini').

affects: *

gotchaThe /mini subpath import is separate from the main schema. Mixing them will not work.

fix

Always import from a single entry point; do not mix import from root and from /mini in the same module.

affects: *

deprecatedVersion 1.x used Zod v3 and CommonJS. Version 2.x is a major rewrite.

fix

Upgrade to v2 and ensure Zod v4 is installed. See CHANGELOG for migration details.

affects: <2.0.0

Errors

Common errors & fixes

Error [ERR_REQUIRE_ESM]: require() of ES Module not supported.

Using CommonJS require() with ESM-only v2 package.

fix

Convert to dynamic import: const { PackageJson } = await import('zod-package-json');

Cannot find module 'zod-package-json'?

Package not installed or incorrect import path.

fix

Run npm install zod-package-json and ensure import is correct: import { PackageJson } from 'zod-package-json';

The inferred type of 'PackageJson' cannot be referenced directly.

No explicit type export; uses Zod _type.

fix

Use typeof PackageJson._type to get the inferred type.

TypeError: (0 , zod_package_json_1.PackageJson) is not a function

Using default import instead of named import.

fix

Use import { PackageJson } from 'zod-package-json';

Upgrade

Version history

2.1.0latest on npm

Audit

Dependencies

zodrequiredPeer dependency – Zod v4 is required at runtime for schema validation.

Agent activity

29 hits · last 30 days

node

Amazon

Resources

githubhttps://github.com/velut/zod-package-json ↗

packagezod-package-json ↗

homepagehttps://github.com/velut/zod-package-json#readme ↗