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axios 1.19.0: Extract Set-Cookie headers as an array from AxiosHeaders even when only a single cookie is set

Verifiziertes Beispiel für npm axios 1.19.0: Extract Set-Cookie headers as an array from AxiosHeaders even when only a single cookie is set. Der Vertrag lief…

sha256:d38fe1c9ccccb6ffc64039c8145f7b10b8b9e7a3ea2eed95ae323f27f82791e3

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Ausführungsbelege

Die deklarierte Umgebung und die signierten Läufe stehen getrennt, damit Sie genau sehen, was dieses Sample ausgeführt hat und wo.

Beleggrundlage
Signierter Vertrag bestanden
Verifizierungsbelege
3
Signaturschlüssel, die es gebaut haben
3
Deklarierte Umgebung node linux x64 node node npm

Umgebungen der Verifizierungsläufe

Umgebung Contract Stufen Lauf
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-16
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1		 2026-08-18
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-09-08

Fall

HOW
Ziel
Extract Set-Cookie headers as an array from AxiosHeaders even when only a single cookie is set
Pakete
Symbole
  • AxiosHeaders.prototype.getSetCookie
Umgebung
node
Erstellt
2026-08-16T06:44:11Z

Contract

  1. AxiosHeaders#getSetCookie() returns an Array when a single Set-Cookie header is configured
  2. AxiosHeaders#getSetCookie() supports Array prototype methods such as map() without throwing TypeError
  3. AxiosHeaders#getSetCookie() returns an empty Array when no Set-Cookie header is present
  4. AxiosHeaders#getSetCookie() returns an Array containing all cookies when multiple Set-Cookie headers are set

Dateien

  • NOTES.md
  • csx.json
  • package-lock.json
  • package.json
  • test/contract.mjs

Quellartefakt herunterladen (tar.gz)

Quelltext

NOTES.md
# Axios: AxiosHeaders.prototype.getSetCookie() Return Type Fix

## What `search_known_solution` answered
- Initial search for `axios` returned existing published samples `sha256:38d7b7764d6d8da55854a0753c3bd6d721f9ffa7bce0032a670f97f253c6131c` ("POST a JSON body with axios and read the parsed response") and `sha256:f206ba87cc25346ce8dad7bb057832cb9991df7c63a0308966543bb9ac34a76b` ("Upload a file with axios as multipart/form-data without the form-data package").
- Targeted search for `AxiosHeaders.prototype.getSetCookie` returned `NO_SAFE_MATCH`.

## What a model would have written instead
A model assumes `AxiosHeaders.prototype.getSetCookie()` conforms to the standard WHATWG `Headers.prototype.getSetCookie()` specification and writes `response.headers.getSetCookie().map(c => c.split(';')[0])` or loops over cookies assuming an array.

## How the wrong version fails
On `axios <= 1.18.1`, `getSetCookie()` returns a bare string instead of a single-element array when exactly one `set-cookie` header is present, failing loudly with `TypeError: headers.getSetCookie(...).map is not a function` (or failing assertions where `Array.isArray()` evaluates to `false`).
csx.json
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package.json
{
  "name": "npm-axios-bugfix",
  "version": "1.0.0",
  "type": "module",
  "dependencies": {
    "axios": "1.19.0"
  }
}
test/contract.mjs
import assert from 'node:assert/strict';
import axios, { AxiosHeaders } from 'axios';

// 1. Single cookie initialized from an object
const singleHeader = new AxiosHeaders({
  'set-cookie': 'session_id=s%3A12345; Path=/; HttpOnly; SameSite=Lax',
});
const singleCookies = singleHeader.getSetCookie();

assert.equal(
  Array.isArray(singleCookies),
  true,
  'getSetCookie() must return an Array when a single cookie is set'
);
assert.equal(singleCookies.length, 1);
assert.equal(
  singleCookies[0],
  'session_id=s%3A12345; Path=/; HttpOnly; SameSite=Lax'
);
// Array operations like .map() must succeed
const cookieNames = singleCookies.map((c) => c.split('=')[0]);
assert.deepEqual(cookieNames, ['session_id']);

// 2. Single cookie updated via .set()
const dynamicHeader = new AxiosHeaders();
dynamicHeader.set('set-cookie', 'token=abcde; Path=/');
const dynamicCookies = dynamicHeader.getSetCookie();

assert.equal(
  Array.isArray(dynamicCookies),
  true,
  'getSetCookie() must return an Array after set()'
);
assert.deepEqual(dynamicCookies, ['token=abcde; Path=/']);

// 3. Multiple cookies
const multiHeader = new AxiosHeaders({
  'set-cookie': ['a=1; Path=/', 'b=2; Path=/'],
});
const multiCookies = multiHeader.getSetCookie();

assert.equal(Array.isArray(multiCookies), true);
assert.deepEqual(multiCookies, ['a=1; Path=/', 'b=2; Path=/']);

// 4. Empty / absent set-cookie header
const emptyHeader = new AxiosHeaders();
const emptyCookies = emptyHeader.getSetCookie();

assert.equal(Array.isArray(emptyCookies), true);
assert.deepEqual(emptyCookies, []);

Ursprungs-Seeder

csx-seed