Selección de modelos de código Claude: valores por defecto, cambio de modelo y coste

SYSTEM
You are completing a bounded JavaScript coding task. Return only the requested JSON object with complete source files and brief review notes. Do not claim to have edited files, run commands, or used tools. You have no tool access. Do not include hidden reasoning.

USER
Implement the following Node.js 18+ CommonJS function from its current source. Return complete replacement source for src/slugify.js. Do not add dependencies, imports, I/O, or other files.

Required behavior:
1. slugify(value) returns an empty string for every non-string input.
2. Normalize string input to Unicode NFC, then lowercase it using JavaScript toLowerCase().
3. Preserve Unicode letters, numbers, and combining marks. Replace each consecutive run of all other characters with one ASCII hyphen.
4. Trim leading and trailing hyphens. Preserve the CommonJS export { slugify }.
5. Existing ASCII behavior must continue to work. Examples: Hello, World! -> hello-world; two   words -> two-words; null -> empty string.
6. Additional examples: Café déjà vu -> café-déjà-vu; decomposed Cafe\u0301 -> café; 中文 测试 42 -> 中文-测试-42; **hi___there** -> hi-there; only punctuation or whitespace -> empty string.

Current src/slugify.js:
```javascript
function slugify(value) {
  if (typeof value !== "string") return "";
  return value
    .trim()
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "");
}

module.exports = { slugify };


```

Return exactly one JSON object with this shape:
{"files":{"src/slugify.js":"complete JavaScript source as a JSON string"},"review_notes":["at most four brief implementation or assumption notes"]}
No Markdown wrapper. You are returning code for someone else to evaluate locally; do not say that tests passed or that you ran them.

```json
{
  "files": {
    "src/slugify.js": "function slugify(value) {\n  if (typeof value !== \"string\") return \"\";\n  \n  // Normalize to NFC and lowercase\n  const normalized = value.normalize(\"NFC\").toLowerCase();\n  \n  // Replace consecutive runs of non-letter, non-number, non-combining-mark characters with a single hyphen\n  // Unicode letter categories: L* (Lu, Ll, Lt, Lm, Lo)\n  // Unicode number categories: N* (Nd, Nl, No)\n  // Unicode combining mark categories: M* (Mn, Mc, Me)\n  const slugged = normalized.replace(/[^\\p{L}\\p{N}\\p{M}]+/gu, \"-\");\n  \n  // Trim leading and trailing hyphens\n  return slugged.replace(/^-+|-+$/g, \"\");\n}\n\nmodule.exports = { slugify };"
  },
  "review_notes": [
    "Uses String.prototype.normalize(\"NFC\") to decompose composed characters like é into base+combining mark, then toLowerCase() applies to normalized string",
    "Unicode property escapes (\\p{L}, \\p{N}, \\p{M}) with /u flag preserve all Unicode letters, numbers, and combining marks while replacing other consecutive characters with single hyphens",
    "Existing ASCII behavior is preserved: punctuation and whitespace are replaced with hyphens, then leading/trailing hyphens are trimmed",
    "Non-string inputs return empty string as required; normalized decomposed characters (e.g., Cafe\\u0301) are handled correctly by NFC normalization"
  ]
}
```

{"files":{"src/slugify.js":"function slugify(value) {\n  if (typeof value !== \"string\") return \"\";\n  return value\n    .normalize(\"NFC\")\n    .toLowerCase()\n    .replace(/[^\\p{L}\\p{N}\\p{M}]+/gu, \"-\")\n    .replace(/^-+|-+$/g, \"\");\n}\n\nmodule.exports = { slugify };\n"},"review_notes":["Used Unicode property escapes (\\p{L}, \\p{N}, \\p{M}) with the u flag to preserve letters, numbers, and combining marks across scripts.","NFC normalization ensures decomposed sequences like Cafe + combining acute compose to café before lowercasing.","Runs of any other characters (punctuation, whitespace, symbols) collapse to a single hyphen, then leading/trailing hyphens are trimmed."]}

{"files":{"src/slugify.js":"function slugify(value) {\n  if (typeof value !== \"string\") return \"\";\n  return value\n    .normalize(\"NFC\")\n    .toLowerCase()\n    .replace(/[^\\p{L}\\p{N}\\p{M}]+/gu, \"-\")\n    .replace(/^-+|-+$/g, \"\");\n}\n\nmodule.exports = { slugify };\n"},"review_notes":["The input is normalized to NFC before lowercasing, so decomposed input like Cafe\\u0301 composes to café.","A Unicode property regex with the u flag keeps letters (\\p{L}), numbers (\\p{N}) and combining marks (\\p{M}). Each run of any other characters, including underscores and whitespace, becomes one hyphen.","The explicit trim() was removed because the final step strips leading and trailing hyphens, which covers surrounding whitespace.","Lowercasing happens after NFC normalization, as the spec orders. toLowerCase can occasionally produce non-NFC output for rare characters, and it is not re-normalized here."]}

Tras las comprobaciones rutinarias, observamos que Haiku se había normalizado /// a una cadena vacía en lugar de /. Una comprobación local independiente utilizaba dos reglas GET, con los prefijos /// y /, dirigido a primero y segundo en ese orden. Para /cualquier cosa, el contrato establece que primero.

Haiku ha vuelto segundo; Sonnet y Opus han vuelto primero. Esta comprobación adicional se realizó a raíz de una revisión del código y es independiente de las doce comprobaciones establecidas antes de las pruebas. No afecta a sus puntuaciones.

SYSTEM
You are completing a bounded JavaScript coding task. Return only the requested JSON object with complete source files and brief review notes. Do not claim to have edited files, run commands, or used tools. You have no tool access. Do not include hidden reasoning.

USER
Repair a Node.js 18+ CommonJS route selector. Return complete replacement src/router.js and an additional test/router-added.test.js using node:test and node:assert/strict. Do not add dependencies or edit existing tests. Do not use I/O other than the test runner, network, child processes, timers, or any files beyond the two requested outputs.

Contract for chooseRoute(request, rules):
1. Invalid request or rules returns null, without throwing. Request must be a non-null, non-array object; method must be a nonempty ASCII-letter string; path must be a string beginning with /. Rules must be an array.
2. Before matching, remove the request path's query and fragment starting at the earliest ? or #. Do not URL-decode or collapse interior slashes.
3. Ignore invalid rules. A valid rule is a non-null, non-array object with method '*' or a nonempty ASCII-letter string, prefix a string starting with / containing neither ? nor #, and target a nonempty string.
4. Compare methods case-insensitively. Prefer any matching exact-method rule over all wildcard-method '*' rules, even if a wildcard has a longer prefix. Use wildcard rules only if no exact-method route matches the path.
5. Remove trailing slashes from a rule prefix, except that an all-slash prefix normalizes to /. A prefix matches the path only at a segment boundary: /api matches /api and /api/users, never /apix. Root / matches every valid request path.
6. Within the chosen method group, choose the longest normalized matching prefix. On equal prefix length, choose the earlier rule in the original input array. Return its target. Return null if none matches.
7. Do not mutate the request, rules array, or rule objects, including order or prefix strings. Preserve module.exports = { chooseRoute }.
8. Add tests for segment boundaries, query/fragment removal, method precedence, ties, malformed inputs and immutability. Existing simple GET /api/users and POST-no-match cases must still pass.

Current src/router.js:
```javascript
function chooseRoute(request, rules) {
  if (!request || !Array.isArray(rules)) return null;
  for (const rule of rules) {
    if (request.method === rule.method && request.path.startsWith(rule.prefix)) {
      return rule.target;
    }
  }
  return null;
}

module.exports = { chooseRoute };


```

Existing regression cases (unchanged): rules [{method:'GET',prefix:'/api',target:'api'},{method:'GET',prefix:'/api/admin',target:'admin'}]; GET /api/users returns 'api'; POST /api/users returns null.

Return exactly one JSON object with this shape:
{"files":{"src/router.js":"complete JavaScript source as a JSON string","test/router-added.test.js":"complete JavaScript tests as a JSON string"},"review_notes":["at most four brief implementation or assumption notes"]}
No Markdown wrapper. You are returning code for someone else to evaluate locally; do not say you edited files, ran tests, or observed passing results.

Esta es la respuesta completa que se ha recibido. Termina a mitad de la salida porque ha alcanzado el límite; el contenido que falta no se ha completado.

```json
{
  "files": {
    "src/router.js": "function chooseRoute(request, rules) {\n  // Validate request\n  if (request === null || Array.isArray(request) || typeof request !== 'object') {\n    return null;\n  }\n  if (typeof request.method !== 'string' || request.method.length === 0 || !/^[a-zA-Z]+$/.test(request.method)) {\n    return null;\n  }\n  if (typeof request.path !== 'string' || !request.path.startsWith('/')) {\n    return null;\n  }\n\n  // Validate rules\n  if (!Array.isArray(rules)) {\n    return null;\n  }\n\n  // Remove query and fragment from path\n  const cleanPath = request.path.split(/[?#]/)[0];\n\n  // Filter and validate rules\n  const validRules = [];\n  for (const rule of rules) {\n    if (rule === null || Array.isArray(rule) || typeof rule !== 'object') {\n      continue;\n    }\n    \n    const method = rule.method;\n    if (typeof method !== 'string' || (method !== '*' && (method.length === 0 || !/^[a-zA-Z]+$/.test(method)))) {\n      continue;\n    }\n    \n    const prefix = rule.prefix;\n    if (typeof prefix !== 'string' || !prefix.startsWith('/') || prefix.includes('?') || prefix.includes('#')) {\n      continue;\n    }\n    \n    const target = rule.target;\n    if (typeof target !== 'string' || target.length === 0) {\n      continue;\n    }\n    \n    validRules.push(rule);\n  }\n\n  // Normalize prefixes and partition into exact-method and wildcard groups\n  const exactMethodRules = [];\n  const wildcardRules = [];\n  \n  for (const rule of validRules) {\n    const normalizedPrefix = rule.prefix === '/' ? '/' : rule.prefix.replace(/\/+$/, '');\n    \n    const entry = {\n      originalRule: rule,\n      normalizedPrefix: normalizedPrefix,\n      method: rule.method\n    };\n    \n    if (rule.method === '*') {\n      wildcardRules.push(entry);\n    } else {\n      exactMethodRules.push(entry);\n    }\n  }\n\n  const requestMethod = request.method.toUpperCase();\n\n  // Helper to check if a prefix matches the path at a segment boundary\n  function prefixMatches(prefix, path) {\n    if (prefix === '/') {\n      return true;\n    }\n    if (!path.startsWith(prefix)) {\n      return false;\n    }\n    // Check segment boundary: next character must be '/' or end of string\n    const nextChar = path[prefix.length];\n    return nextChar === undefined || nextChar === '/';\n  }\n\n  // Try exact-method rules first\n  let bestMatch = null;\n  let bestLength = -1;\n  \n  for (const entry of exactMethodRules) {\n    if (entry.method.toUpperCase() === requestMethod) {\n      if (prefixMatches(entry.normalizedPrefix, cleanPath)) {\n        if (entry.normalizedPrefix.length > bestLength) {\n          bestMatch = entry.originalRule;\n          bestLength = entry.normalizedPrefix.length;\n        }\n      }\n    }\n  }\n  \n  if (bestMatch !== null) {\n    return bestMatch.target;\n  }\n\n  // Try wildcard rules only if no exact-method match\n  bestMatch = null;\n  bestLength = -1;\n  \n  for (const entry of wildcardRules) {\n    if (prefixMatches(entry.normalizedPrefix, cleanPath)) {\n      if (entry.normalizedPrefix.length > bestLength) {\n        bestMatch = entry.originalRule;\n        bestLength = entry.normalizedPrefix.length;\n      }\n    }\n  }\n  \n  if (bestMatch !== null) {\n    return bestMatch.target;\n  }\n\n  return null;\n}\n\nmodule.exports = { chooseRoute };",
    "test/router-added.test.js": "const test = require('node:test');\nconst assert = require('node:assert/strict');\nconst { chooseRoute } = require('../src/router.js');\n\n// Regression: existing test cases\ntest('GET /api/users matches /api prefix (exact method)', () => {\n  const rules = [\n    { method: 'GET', prefix: '/api', target: 'api' },\n    { method: 'GET', prefix: '/api/admin', target: 'admin' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users' }, rules), 'api');\n});\n\ntest('POST /api/users returns null (no matching method)', () => {\n  const rules = [\n    { method: 'GET', prefix: '/api', target: 'api' },\n    { method: 'GET', prefix: '/api/admin', target: 'admin' }\n  ];\n  assert.equal(chooseRoute({ method: 'POST', path: '/api/users' }, rules), null);\n});\n\n// Invalid request handling\ntest('null request returns null', () => {\n  assert.equal(chooseRoute(null, []), null);\n});\n\ntest('array request returns null', () => {\n  assert.equal(chooseRoute([], []), null);\n});\n\ntest('request with missing method returns null', () => {\n  assert.equal(chooseRoute({ path: '/api' }, []), null);\n});\n\ntest('request with empty method returns null', () => {\n  assert.equal(chooseRoute({ method: '', path: '/api' }, []), null);\n});\n\ntest('request with non-letter method returns null', () => {\n  assert.equal(chooseRoute({ method: 'GET-POST', path: '/api' }, []), null);\n});\n\ntest('request with numeric method returns null', () => {\n  assert.equal(chooseRoute({ method: '123', path: '/api' }, []), null);\n});\n\ntest('request with missing path returns null', () => {\n  assert.equal(chooseRoute({ method: 'GET' }, []), null);\n});\n\ntest('request with path not starting with / returns null', () => {\n  assert.equal(chooseRoute({ method: 'GET', path: 'api' }, []), null);\n});\n\ntest('null rules returns null', () => {\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, null), null);\n});\n\ntest('non-array rules returns null', () => {\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, { method: 'GET' }), null);\n});\n\n// Query and fragment removal\ntest('query string is removed before matching', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users?foo=bar' }, rules), 'found');\n});\n\ntest('fragment is removed before matching', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users#section' }, rules), 'found');\n});\n\ntest('earliest ? or # is used as boundary', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users?foo#bar' }, rules), 'found');\n});\n\ntest('fragment before query is used as boundary', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users#foo?bar' }, rules), 'found');\n});\n\n// Segment boundary matching\ntest('prefix /api matches /api/users at segment boundary', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users' }, rules), 'found');\n});\n\ntest('prefix /api does not match /apix (no segment boundary)', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/apix' }, rules), null);\n});\n\ntest('prefix /api matches /api exactly at segment boundary', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'found');\n});\n\ntest('root / matches any valid path', () => {\n  const rules = [{ method: 'GET', prefix: '/', target: 'root' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/anything/here' }, rules), 'root');\n});\n\ntest('root / matches /', () => {\n  const rules = [{ method: 'GET', prefix: '/', target: 'root' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/' }, rules), 'root');\n});\n\n// Prefix normalization (trailing slash removal)\ntest('trailing slash is removed from prefix', () => {\n  const rules = [{ method: 'GET', prefix: '/api/', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users' }, rules), 'found');\n});\n\ntest('multiple trailing slashes are removed', () => {\n  const rules = [{ method: 'GET', prefix: '/api///', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users' }, rules), 'found');\n});\n\ntest('all-slash prefix normalizes to single /', () => {\n  const rules = [{ method: 'GET', prefix: '///', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'found');\n});\n\n// Method case-insensitivity\ntest('method comparison is case-insensitive', () => {\n  const rules = [{ method: 'get', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'found');\n});\n\ntest('request method case does not affect matching', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'found' }];\n  assert.equal(chooseRoute({ method: 'get', path: '/api' }, rules), 'found');\n});\n\n// Exact-method vs wildcard precedence\ntest('exact-method rule preferred over wildcard with longer prefix', () => {\n  const rules = [\n    { method: '*', prefix: '/api/admin/users', target: 'wildcard' },\n    { method: 'GET', prefix: '/api', target: 'exact' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/test' }, rules), 'exact');\n});\n\ntest('wildcard rule used when no exact-method matches', () => {\n  const rules = [\n    { method: '*', prefix: '/api', target: 'wildcard' },\n    { method: 'GET', prefix: '/other', target: 'exact' }\n  ];\n  assert.equal(chooseRoute({ method: 'POST', path: '/api/users' }, rules), 'wildcard');\n});\n\n// Longest prefix matching\ntest('longest matching prefix is chosen', () => {\n  const rules = [\n    { method: 'GET', prefix: '/api', target: 'short' },\n    { method: 'GET', prefix: '/api/admin', target: 'long' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/admin/users' }, rules), 'long');\n});\n\n// Tie-breaking (first rule wins on equal prefix length)\ntest('first rule wins on equal prefix length', () => {\n  const rules = [\n    { method: 'GET', prefix: '/api', target: 'first' },\n    { method: 'GET', prefix: '/api', target: 'second' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users' }, rules), 'first');\n});\n\n// Invalid rules are ignored\ntest('null rule is ignored', () => {\n  const rules = [\n    null,\n    { method: 'GET', prefix: '/api', target: 'found' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'found');\n});\n\ntest('array rule is ignored', () => {\n  const rules = [\n    [],\n    { method: 'GET', prefix: '/api', target: 'found' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'found');\n});\n\ntest('rule with invalid method is ignored', () => {\n  const rules = [\n    { method: '', prefix: '/api', target: 'invalid' },\n    { method: 'GET', prefix: '/api', target: 'valid' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'valid');\n});\n\ntest('rule with non-letter method (if not wildcard) is ignored', () => {\n  const rules = [\n    { method: 'G3T', prefix: '/api', target: 'invalid' },\n    { method: 'GET', prefix: '/api', target: 'valid' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'valid');\n});\n\ntest('rule with prefix not starting with / is ignored', () => {\n  const rules = [\n    { method: 'GET', prefix: 'api', target: 'invalid' },\n    { method: 'GET', prefix: '/api', target: 'valid' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'valid');\n});\n\ntest('rule with query in prefix is ignored', () => {\n  const rules = [\n    { method: 'GET', prefix: '/api?foo=bar', target: 'invalid' },\n    { method: 'GET', prefix: '/api', target: 'valid' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'valid');\n});\n\ntest('rule with fragment in prefix is ignored', () => {\n  const rules = [\n    { method: 'GET', prefix: '/api#section', target: 

Esta es la respuesta completa que se ha recibido. Termina a mitad de la salida porque ha alcanzado el límite; el contenido que falta no se ha completado.

{"files":{"src/router.js":"function isValidRequest(request) {\n  return (\n    request !== null &&\n    typeof request === 'object' &&\n    !Array.isArray(request) &&\n    typeof request.method === 'string' &&\n    request.method.length > 0 &&\n    /^[A-Za-z]+$/.test(request.method) &&\n    typeof request.path === 'string' &&\n    request.path.startsWith('/')\n  );\n}\n\nfunction isValidRule(rule) {\n  if (rule === null || typeof rule !== 'object' || Array.isArray(rule)) {\n    return false;\n  }\n  const { method, prefix, target } = rule;\n\n  if (typeof method !== 'string') return false;\n  if (method !== '*' && !(method.length > 0 && /^[A-Za-z]+$/.test(method))) {\n    return false;\n  }\n\n  if (\n    typeof prefix !== 'string' ||\n    !prefix.startsWith('/') ||\n    prefix.includes('?') ||\n    prefix.includes('#')\n  ) {\n    return false;\n  }\n\n  if (typeof target !== 'string' || target.length === 0) return false;\n\n  return true;\n}\n\nfunction normalizePrefix(prefix) {\n  if (/^\/+$/.test(prefix)) return '/';\n  return prefix.replace(/\/+$/, '');\n}\n\nfunction prefixMatches(normalizedPrefix, path) {\n  if (normalizedPrefix === '/') return true;\n  if (path === normalizedPrefix) return true;\n  return path.startsWith(normalizedPrefix + '/');\n}\n\nfunction stripQueryAndFragment(path) {\n  let cutIndex = path.length;\n  for (let i = 0; i < path.length; i++) {\n    const c = path[i];\n    if (c === '?' || c === '#') {\n      cutIndex = i;\n      break;\n    }\n  }\n  return path.slice(0, cutIndex);\n}\n\nfunction chooseRoute(request, rules) {\n  if (!isValidRequest(request) || !Array.isArray(rules)) return null;\n\n  const path = stripQueryAndFragment(request.path);\n  const reqMethodLower = request.method.toLowerCase();\n\n  let bestExact = null; // { len, idx, target }\n  let bestWildcard = null;\n\n  for (let idx = 0; idx < rules.length; idx++) {\n    const rule = rules[idx];\n    if (!isValidRule(rule)) continue;\n\n    const normPrefix = normalizePrefix(rule.prefix);\n    if (!prefixMatches(normPrefix, path)) continue;\n\n    const len = normPrefix.length;\n\n    if (rule.method === '*') {\n      if (\n        bestWildcard === null ||\n        len > bestWildcard.len ||\n        (len === bestWildcard.len && idx < bestWildcard.idx)\n      ) {\n        bestWildcard = { len, idx, target: rule.target };\n      }\n    } else if (rule.method.toLowerCase() === reqMethodLower) {\n      if (\n        bestExact === null ||\n        len > bestExact.len ||\n        (len === bestExact.len && idx < bestExact.idx)\n      ) {\n        bestExact = { len, idx, target: rule.target };\n      }\n    }\n  }\n\n  if (bestExact !== null) return bestExact.target;\n  if (bestWildcard !== null) return bestWildcard.target;\n  return null;\n}\n\nmodule.exports = { chooseRoute };\n","test/router-added.test.js":"const test = require('node:test');\nconst assert = require('node:assert/strict');\nconst { chooseRoute } = require('../src/router');\n\ntest('segment boundary: prefix matches at slash boundary only', () => {\n  const rules = [\n    { method: 'GET', prefix: '/api', target: 'api' },\n  ];\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/api/users' }, rules),\n    'api'\n  );\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/api' }, rules),\n    'api'\n  );\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/apix' }, rules),\n    null\n  );\n});\n\ntest('root prefix matches every valid path', () => {\n  const rules = [{ method: 'GET', prefix: '/', target: 'root' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/' }, rules), 'root');\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/anything/here' }, rules),\n    'root'\n  );\n});\n\ntest('trailing slashes in rule prefix are normalized', () => {\n  const rules = [{ method: 'GET', prefix: '/api///', target: 'api' }];\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/api/users' }, rules),\n    'api'\n  );\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'api');\n});\n\ntest('all-slash prefix normalizes to /', () => {\n  const rules = [{ method: 'GET', prefix: '////', target: 'root' }];\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/whatever' }, rules),\n    'root'\n  );\n});\n\ntest('query and fragment are stripped before matching', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'api' }];\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/api/users?x=1&y=2' }, rules),\n    'api'\n  );\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/api/users#section' }, rules),\n    'api'\n  );\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/api/users?x=1#frag' }, rules),\n    'api'\n  );\n});\n\ntest('query/fragment stripping does not decode or collapse slashes', () => {\n  const rules = [{ method: 'GET', prefix: '/a//b', target: 'weird' }];\n  assert.equal(\n    chooseRoute({ method: 'GET', path: '/a//b?x=1' }, rules),

Esta es la respuesta completa que se ha recibido. Termina a mitad de la salida porque ha alcanzado el límite; el contenido que falta no se ha completado.

{"files":{"src/router.js":"'use strict';\n\nconst LETTERS = /^[A-Za-z]+$/;\n\nfunction isPlainObject(value) {\n  return value !== null && typeof value === 'object' && !Array.isArray(value);\n}\n\nfunction isMethodName(value) {\n  return typeof value === 'string' && value.length > 0 && LETTERS.test(value);\n}\n\nfunction stripQueryAndFragment(path) {\n  const q = path.indexOf('?');\n  const h = path.indexOf('#');\n  let cut = -1;\n  if (q !== -1 && h !== -1) cut = Math.min(q, h);\n  else if (q !== -1) cut = q;\n  else if (h !== -1) cut = h;\n  return cut === -1 ? path : path.slice(0, cut);\n}\n\nfunction normalizePrefix(prefix) {\n  let end = prefix.length;\n  while (end > 0 && prefix[end - 1] === '/') end -= 1;\n  return end === 0 ? '/' : prefix.slice(0, end);\n}\n\nfunction prefixMatches(path, prefix) {\n  if (prefix === '/') return true;\n  return path === prefix || path.startsWith(prefix + '/');\n}\n\nfunction chooseRoute(request, rules) {\n  try {\n    if (!isPlainObject(request) || !Array.isArray(rules)) return null;\n    const method = request.method;\n    const rawPath = request.path;\n    if (!isMethodName(method)) return null;\n    if (typeof rawPath !== 'string' || rawPath[0] !== '/') return null;\n\n    const path = stripQueryAndFragment(rawPath);\n    const upperMethod = method.toUpperCase();\n\n    let bestExact = null;\n    let bestWildcard = null;\n\n    const count = rules.length;\n    for (let i = 0; i < count; i += 1) {\n      const rule = rules[i];\n      if (!isPlainObject(rule)) continue;\n      const ruleMethod = rule.method;\n      const prefix = rule.prefix;\n      const target = rule.target;\n      const isWildcard = ruleMethod === '*';\n      if (!isWildcard && !isMethodName(ruleMethod)) continue;\n      if (typeof prefix !== 'string' || prefix[0] !== '/') continue;\n      if (prefix.indexOf('?') !== -1 || prefix.indexOf('#') !== -1) continue;\n      if (typeof target !== 'string' || target.length === 0) continue;\n\n      const normalized = normalizePrefix(prefix);\n      if (!prefixMatches(path, normalized)) continue;\n\n      const candidate = { length: normalized.length, target };\n      if (isWildcard) {\n        if (bestWildcard === null || candidate.length > bestWildcard.length) bestWildcard = candidate;\n      } else if (ruleMethod.toUpperCase() === upperMethod) {\n        if (bestExact === null || candidate.length > bestExact.length) bestExact = candidate;\n      }\n    }\n\n    if (bestExact !== null) return bestExact.target;\n    if (bestWildcard !== null) return bestWildcard.target;\n    return null;\n  } catch (err) {\n    return null;\n  }\n}\n\nmodule.exports = { chooseRoute };\n","test/router-added.test.js":"'use strict';\n\nconst test = require('node:test');\nconst assert = require('node:assert/strict');\nconst { chooseRoute } = require('../src/router.js');\n\nconst baseRules = [\n  { method: 'GET', prefix: '/api', target: 'api' },\n  { method: 'GET', prefix: '/api/admin', target: 'admin' }\n];\n\ntest('existing regression cases still hold', () => {\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users' }, baseRules), 'api');\n  assert.equal(chooseRoute({ method: 'POST', path: '/api/users' }, baseRules), null);\n});\n\ntest('longest prefix wins within method group', () => {\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/admin/x' }, baseRules), 'admin');\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/admin' }, baseRules), 'admin');\n});\n\ntest('segment boundaries', () => {\n  const rules = [{ method: 'GET', prefix: '/api', target: 'api' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'api');\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/' }, rules), 'api');\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/users' }, rules), 'api');\n  assert.equal(chooseRoute({ method: 'GET', path: '/apix' }, rules), null);\n  assert.equal(chooseRoute({ method: 'GET', path: '/ap' }, rules), null);\n});\n\ntest('trailing slashes in prefixes are normalized, all-slash is root', () => {\n  const rules = [{ method: 'GET', prefix: '/api///', target: 'api' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api' }, rules), 'api');\n  assert.equal(chooseRoute({ method: 'GET', path: '/apix' }, rules), null);\n  const rootRules = [{ method: 'GET', prefix: '///', target: 'root' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/' }, rootRules), 'root');\n  assert.equal(chooseRoute({ method: 'GET', path: '/anything/else' }, rootRules), 'root');\n  assert.equal(chooseRoute({ method: 'GET', path: '/x' }, [{ method: 'GET', prefix: '/', target: 'r' }]), 'r');\n});\n\ntest('query and fragment are removed at earliest ? or #', () => {\n  assert.equal(chooseRoute({ method: 'GET', path: '/api?next=/api/admin' }, baseRules), 'api');\n  assert.equal(chooseRoute({ method: 'GET', path: '/api#/admin' }, baseRules), 'api');\n  assert.equal(chooseRoute({ method: 'GET', path: '/apix?/api' }, baseRules), null);\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/admin#frag?q' }, baseRules), 'admin');\n  assert.equal(chooseRoute({ method: 'GET', path: '/api?q#/admin' }, baseRules), 'api');\n});\n\ntest('no URL decoding and no slash collapsing', () => {\n  const rules = [{ method: 'GET', prefix: '/api/admin', target: 'admin' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api%2Fadmin' }, rules), null);\n  assert.equal(chooseRoute({ method: 'GET', path: '/api//admin' }, rules), null);\n  assert.equal(chooseRoute({ method: 'GET', path: '/api//admin' }, baseRules), 'api');\n});\n\ntest('methods compare case-insensitively', () => {\n  const rules = [{ method: 'get', prefix: '/a', target: 'lower' }];\n  assert.equal(chooseRoute({ method: 'GET', path: '/a' }, rules), 'lower');\n  assert.equal(chooseRoute({ method: 'gEt', path: '/a/b' }, rules), 'lower');\n});\n\ntest('exact method beats longer wildcard; wildcard used only as fallback', () => {\n  const rules = [\n    { method: '*', prefix: '/api/admin', target: 'wild-admin' },\n    { method: 'GET', prefix: '/', target: 'get-root' },\n    { method: 'POST', prefix: '/other', target: 'post-other' },\n    { method: '*', prefix: '/api', target: 'wild-api' }\n  ];\n  assert.equal(chooseRoute({ method: 'GET', path: '/api/admin/x' }, rules), 'get-root');\n  assert.equal(chooseRoute({ method: 'POST', path: '/api/admin/x' }, rules), 'wild-admin');\n  assert.equal(chooseRoute({ method: 'POST', path: '/api/x' }, rules), 'wild-api');\n  assert.equal(chooseRoute({ method: 'POST', path: '/other/1' }, rules), 'post-other');\n  assert.equal(chooseRoute({ method: 'PUT', path: '/nothing' }, rules), null);\n});\n\ntest('ties go to earlier rule in input order', () => {\n  const rules = [\n    { method: 'GET', pref