commander 10.0.0: Prove that Commander 10 does not normalize leading whitespace in `.arguments()` signatures, which changes required positional argument behavior.

# Notes

`search_known_solution` returned a COMPATIBLE hit for `pkg:npm/commander@10.0.1` around `Option.implies` (`sampleId: sha256:5c6d27a5983a0c5c7ab82d8867250554602d63b07860b3cdacd2dcd58f498252`), so this sample uses a different trap.

Wrong-version behavior is loud: `new Command().arguments(' <required> [optional]')` on Commander 10 throws a `commander.missingArgument` when parsing `['node', 'app', 'only']`, while the adjacent major accepts it when the leading space is trimmed.

{"case":{"believed":"A leading space before a positional signature is ignored by Commander, so `program.arguments(' \u003cname\u003e')` is equivalent to `program.arguments('\u003cname\u003e')`.","caseId":"case:sha256:734d9b8db2b7b1ab91261c8f2274049682c1e47a3ed56f741dd8aa1bb8c1617a","contract":["In Commander 10, a leading-space argument signature is not ignored, so parsing `['node', 'app', 'only']` with `new Command().arguments(' \u003crequired\u003e [optional]')` throws `commander.missingArgument` and does not accept a single positional argument.","assert.equal(error.code, 'commander.missingArgument')","assert.match(error.message, /missing required argument/)"],"goal":"Prove that Commander 10 does not normalize leading whitespace in `.arguments()` signatures, which changes required positional argument behavior.","kind":"HOW","packages":["pkg:npm/commander@10.0.0"],"schemaVersion":1,"symbols":["Command","Command.arguments","Command.parse"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","ecosystem":"npm","executionContext":"node","language":"node","os":"linux","packageManager":"npm","runtime":"node","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/commander@10.0.0"],"schemaVersion":1,"symbols":["Command","Command.arguments","Command.parse"],"verifierAdapter":"node-typescript@1"}

{
  "name": "npm-commander-v10",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "npm-commander-v10",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "commander": "10.0.0"
      }
    },
    "node_modules/commander": {
      "version": "10.0.0",
      "resolved": "https://registry.npmjs.org/commander/-/commander-10.0.0.tgz",
      "integrity": "sha512-zS5PnTI22FIRM6ylNW8G4Ap0IEOyk62fhLSD0+uHRT9McRCLGpkVNvao4bjimpK/GShynyQkFFxHhwMcETmduA==",
      "license": "MIT",
      "engines": {
        "node": ">=14"
      }
    }
  }
}

{
  "name": "npm-commander-v10",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "commander": "10.0.0"
  }
}

import assert from 'node:assert/strict';
import { Command } from 'commander';

const program = new Command();
program.arguments(' <required> [optional]');
program.exitOverride((err) => {
  throw err;
});

let error;
try {
  program.parse(['node', 'app', 'only']);
} catch (err) {
  error = err;
}

assert(error, 'expected parse to throw when one positional value is supplied');
assert.equal(error.code, 'commander.missingArgument');
assert.match(error.message, /missing required argument/);