json4.2 KB

npm Lockfile With a Peer Conflict and Nested Duplicate

An npm lockfile where the fictional example-cache pins a peer of example-logger@2.9.0 while the rest of the tree resolves 3.4.1, forcing a nested node_modules duplicate — the shape a deduplication report must detect. Every package, version, hash and licence is fictional — the tree describes nothing real.

JSON parsing Graph data Error handling

Preview — first 50 linesjson

{
  "name": "orchard-gateway",
  "version": "4.2.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "orchard-gateway",
      "version": "4.2.0",
      "license": "Apache-2.0",
      "dependencies": {
        "@orchard-example/router": "^2.1.0",
        "@orchard-example/http-core": "^1.8.0",
        "example-metrics": "^4.0.0",
        "example-cache": "^0.9.0",
        "example-crypto-shim": "^1.2.0"
      },
      "engines": {
        "node": ">=20.9"
      }
    },
    "node_modules/@orchard-example/router": {
      "version": "2.1.3",
      "resolved": "https://registry.orchard.example/@orchard-example/router/-/router-2.1.3.tgz",
      "integrity": "sha512-qtnM4l9j8zUuqQ9ICsxCdfl879PtducHYPiqO151qEu6bBv48+zuYbTbn/vSTJGbCd2RvGpDry/NEkSe1babaA==",
      "license": "Apache-2.0",
      "dependencies": {
        "example-logger": "^3.4.0",
        "example-retry": "^1.0.0"
      }
    },
    "node_modules/@orchard-example/http-core": {
      "version": "1.8.0",
      "resolved": "https://registry.orchard.example/@orchard-example/http-core/-/http-core-1.8.0.tgz",
      "integrity": "sha512-fG9AJmG+37+sln/eMVPmbu/bIcV+QbJ3bibSV9ob8PV6GYNFinrhSJQYFxkEYEHxckXBn7ExDim59rqSDaYoFg==",
      "license": "MIT",
      "dependencies": {
        "example-logger": "^3.4.0",
        "example-json-path": "^2.0.0"
      }
    },
    "node_modules/example-metrics": {
      "version": "4.0.0",
      "resolved": "https://registry.orchard.example/example-metrics/-/example-metrics-4.0.0.tgz",
      "integrity": "sha512-Sq3cxZ+Brv4bgLd+5B/o3upQ1O6YKjbr6TP5ZBZfw4XVjna6/8YkOeB52iLhrRDjs1UiF5v20Ijr7bEJtHKcOQ==",
      "license": "MIT",
      "dependencies": {
        "example-logger": "^3.4.0"
      },
      "peerDependencies": {

… 107 lines total — download for the full file.

Specifications

Seed: 51200
Sample Only: true
Ecosystem: npm
Lockfile Version: 3
Duplicate Versions: 2
Conflicting Package: example-logger
Line Endings: LF

Testing contract

Expected to recover

Scenario: Detect duplicate versions of one package inside a single lockfile.
Expected result: Analysis reports example-logger installed twice, at 3.4.1 (hoisted) and 2.9.0 (nested under example-cache), and names the peer range that caused it.

What is a .json file?

JSON (JavaScript Object Notation) is a lightweight, text-based data-interchange format representing objects, arrays, strings, numbers, booleans, and null. It is language-independent, human-readable, and the dominant format for web APIs and configuration. It requires a single well-formed root value.

How to use this file

Use an example JSON file to test parsers and serializers, schema validation, Unicode and number-precision handling, and API request or response processing.

How to use this file for testing

“npm Lockfile With a Peer Conflict and Nested Duplicate” is a deterministic Novus Examples fixture for JSON parsing, Graph data, Error handling. Flat, deeply nested, JSON Lines, and intentionally invalid JSON for testing parsers and error handling.

Documented properties for this file: seed 51200 · LF. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.

Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.

SBOM, lockfile, provenance, and advisory fixtures describe the same fabricated component tree across formats, so a converter or scanner can be diffed against a known answer. Every package name, version, hash, and advisory ID is invented — never treat a finding here as real.

Feed the file to your parser and assert it handles the documented quirks — quoted delimiters, embedded newlines, ragged rows, or invalid syntax; the valid↔invalid distinction is labelled in the title.

Code examples

import json

with open("package-lock-peer-conflict.json") as f:
    data = json.load(f)
print(type(data), len(data))

Generated by generation/supply_chain.py. Free for any use, no attribution required — license.