示例

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

已验证示例 — npm axios 1.19.0: Extract Set-Cookie headers as an array from AxiosHeaders even when only a single cookie is set. contract 在 node 22 · linux…

sha256:d38fe1c9ccccb6ffc64039c8145f7b10b8b9e7a3ea2eed95ae323f27f82791e3

MIT-0

执行证据

声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。

证据依据: 签名契约通过
验证回执: 3
构建过它的签名密钥: 3

声明的环境 node linux x64 node node npm

验证运行环境

环境	契约	阶段	运行日期
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

案例

HOW

目标: Extract Set-Cookie headers as an array from AxiosHeaders even when only a single cookie is set
包: axios 1.19.0
符号: AxiosHeaders.prototype.getSetCookie
环境: node
创建时间: 2026-08-16T06:44:11Z

契约

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

文件

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

下载源代码构件 (tar.gz)

源代码

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

{"case":{"caseId":"case:sha256:c6e42a540d522c0dd3bad2711840803576081a03dcd4ef22aeaaf8cef1f06b42","contract":["AxiosHeaders#getSetCookie() returns an Array when a single Set-Cookie header is configured","AxiosHeaders#getSetCookie() supports Array prototype methods such as map() without throwing TypeError","AxiosHeaders#getSetCookie() returns an empty Array when no Set-Cookie header is present","AxiosHeaders#getSetCookie() returns an Array containing all cookies when multiple Set-Cookie headers are set"],"goal":"Extract Set-Cookie headers as an array from AxiosHeaders even when only a single cookie is set","kind":"HOW","packages":["pkg:npm/axios@1.19.0"],"schemaVersion":1,"symbols":["AxiosHeaders.prototype.getSetCookie"]},"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/axios@1.19.0"],"schemaVersion":1,"symbols":["AxiosHeaders.prototype.getSetCookie"],"verifierAdapter":"node-typescript@1"}

package-lock.json

{
  "name": "npm-axios-bugfix",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "npm-axios-bugfix",
      "version": "1.0.0",
      "license": "ISC",
      "dependencies": {
        "axios": "^1.19.0"
      }
    },
    "node_modules/agent-base": {
      "version": "6.0.2",
      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
      "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
      "license": "MIT",
      "dependencies": {
        "debug": "4"
      },
      "engines": {
        "node": ">= 6.0.0"
      }
    },
    "node_modules/asynckit": {
      "version": "0.4.0",
      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
      "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==",
      "license": "MIT"
    },
    "node_modules/axios": {
      "version": "1.19.0",
      "resolved": "https://registry.npmjs.org/axios/-/axios-1.19.0.tgz",
      "integrity": "sha512-ht/iuYZXEjFxLH/Hkezgd7m6JKlHHXEUSneaDz8uZe1Gj5QZtCnpyDsckvAiEnT89OEbCLmnte4R4sn7P0EKFw==",
      "license": "MIT",
      "dependencies": {
        "follow-redirects": "^1.16.0",
        "form-data": "^4.0.6",
        "https-proxy-agent": "^5.0.1",
        "proxy-from-env": "^2.1.0"
      }
    },
    "node_modules/call-bind-apply-helpers": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/call-bind-apply-helpers/-/call-bind-apply-helpers-1.0.2.tgz",
      "integrity": "sha512-Sp1ablJ0ivDkSzjcaJdxEunN5/XvksFJ2sMBFfq6x0ryhQV/2b/KwFe21cMpmHtPOSij8K99/wSfoEuTObmuMQ==",
      "license": "MIT",
      "dependencies": {
        "es-errors": "^1.3.0",
        "function-bind": "^1.1.2"
      },
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/combined-stream": {
      "version": "1.0.8",
      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
      "license": "MIT",
      "dependencies": {
        "delayed-stream": "~1.0.0"
      },
      "engines": {
        "node": ">= 0.8"
      }
    },
    "node_modules/debug": {
      "version": "4.4.3",
      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
      "integrity": "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==",
      "license": "MIT",
      "dependencies": {
        "ms": "^2.1.3"
      },
      "engines": {
        "node": ">=6.0"
      },
      "peerDependenciesMeta": {
        "supports-color": {
          "optional": true
        }
      }
    },
    "node_modules/delayed-stream": {
      "version": "1.0.0",
      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
      "integrity": "sha512-ZySD7Nf91aLB0RxL4KGrKHBXl7Eds1DAmEdcoVawXnLD7SDhpNgtuII2aAkg7a7QS41jxPSZ17p4VdGnMHk3MQ==",
      "license": "MIT",
      "engines": {
        "node": ">=0.4.0"
      }
    },
    "node_modules/dunder-proto": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/dunder-proto/-/dunder-proto-1.0.1.tgz",
      "integrity": "sha512-KIN/nDJBQRcXw0MLVhZE9iQHmG68qAVIBg9CqmUYjmQIhgij9U5MFvrqkUL5FbtyyzZuOeOt0zdeRe4UY7ct+A==",
      "license": "MIT",
      "dependencies": {
        "call-bind-apply-helpers": "^1.0.1",
        "es-errors": "^1.3.0",
        "gopd": "^1.2.0"
      },
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/es-define-property": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/es-define-property/-/es-define-property-1.0.1.tgz",
      "integrity": "sha512-e3nRfgfUZ4rNGL232gUgX06QNyyez04KdjFrF+LTRoOXmrOgFKDg4BCdsjW8EnT69eqdYGmRpJwiPVYNrCaW3g==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/es-errors": {
      "version": "1.3.0",
      "resolved": "https://registry.npmjs.org/es-errors/-/es-errors-1.3.0.tgz",
      "integrity": "sha512-Zf5H2Kxt2xjTvbJvP2ZWLEICxA6j+hAmMzIlypy4xcBg1vKVnx89Wy0GbS+kf5cwCVFFzdCFh2XSCFNULS6csw==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/es-object-atoms": {
      "version": "1.1.2",
      "resolved": "https://registry.npmjs.org/es-object-atoms/-/es-object-atoms-1.1.2.tgz",
      "integrity": "sha512-HWcBoN6NileqtSydK2FqHbS/LoDd2pqrnQHLyJzBj4kOp/ky2MWMN694xOfkK8/SnUsW2DH7EfyVlydKCsm1Zw==",
      "license": "MIT",
      "dependencies": {
        "es-errors": "^1.3.0"
      },
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/es-set-tostringtag": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/es-set-tostringtag/-/es-set-tostringtag-2.1.0.tgz",
      "integrity": "sha512-j6vWzfrGVfyXxge+O0x5sh6cvxAog0a/4Rdd2K36zCMV5eJ+/+tOAngRO8cODMNWbVRdVlmGZQL2YS3yR8bIUA==",
      "license": "MIT",
      "dependencies": {
        "es-errors": "^1.3.0",
        "get-intrinsic": "^1.2.6",
        "has-tostringtag": "^1.0.2",
        "hasown": "^2.0.2"
      },
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/follow-redirects": {
      "version": "1.16.0",
      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.16.0.tgz",
      "integrity": "sha512-y5rN/uOsadFT/JfYwhxRS5R7Qce+g3zG97+JrtFZlC9klX/W5hD7iiLzScI4nZqUS7DNUdhPgw4xI8W2LuXlUw==",
      "funding": [
        {
          "type": "individual",
          "url": "https://github.com/sponsors/RubenVerborgh"
        }
      ],
      "license": "MIT",
      "engines": {
        "node": ">=4.0"
      },
      "peerDependenciesMeta": {
        "debug": {
          "optional": true
        }
      }
    },
    "node_modules/form-data": {
      "version": "4.0.6",
      "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.6.tgz",
      "integrity": "sha512-vKatAh4SlVfgbv+YtmhiRjhEMJsYpsG1Y2rMQtR+SVSbytsSD1YGzDIcrAJmdFec88u/+VoGmxnl+80gL1tRCQ==",
      "license": "MIT",
      "dependencies": {
        "asynckit": "^0.4.0",
        "combined-stream": "^1.0.8",
        "es-set-tostringtag": "^2.1.0",
        "hasown": "^2.0.4",
        "mime-types": "^2.1.35"
      },
      "engines": {
        "node": ">= 6"
      }
    },
    "node_modules/function-bind": {
      "version": "1.1.2",
      "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz",
      "integrity": "sha512-7XHNxH7qX9xG5mIwxkhumTox/MIRNcOgDrxWsMt2pAr23WHp6MrRlN7FBSFpCpr+oVO0F744iUgR82nJMfG2SA==",
      "license": "MIT",
      "funding": {
        "url": "https://github.com/sponsors/ljharb"
      }
    },
    "node_modules/get-intrinsic": {
      "version": "1.3.0",
      "resolved": "https://registry.npmjs.org/get-intrinsic/-/get-intrinsic-1.3.0.tgz",
      "integrity": "sha512-9fSjSaos/fRIVIp+xSJlE6lfwhES7LNtKaCBIamHsjr2na1BiABJPo0mOjjz8GJDURarmCPGqaiVg5mfjb98CQ==",
      "license": "MIT",
      "dependencies": {
        "call-bind-apply-helpers": "^1.0.2",
        "es-define-property": "^1.0.1",
        "es-errors": "^1.3.0",
        "es-object-atoms": "^1.1.1",
        "function-bind": "^1.1.2",
        "get-proto": "^1.0.1",
        "gopd": "^1.2.0",
        "has-symbols": "^1.1.0",
        "hasown": "^2.0.2",
        "math-intrinsics": "^1.1.0"
      },
      "engines": {
        "node": ">= 0.4"
      },
      "funding": {
        "url": "https://github.com/sponsors/ljharb"
      }
    },
    "node_modules/get-proto": {
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/get-proto/-/get-proto-1.0.1.tgz",
      "integrity": "sha512-sTSfBjoXBp89JvIKIefqw7U2CCebsc74kiY6awiGogKtoSGbgjYE/G/+l9sF3MWFPNc9IcoOC4ODfKHfxFmp0g==",
      "license": "MIT",
      "dependencies": {
        "dunder-proto": "^1.0.1",
        "es-object-atoms": "^1.0.0"
      },
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/gopd": {
      "version": "1.2.0",
      "resolved": "https://registry.npmjs.org/gopd/-/gopd-1.2.0.tgz",
      "integrity": "sha512-ZUKRh6/kUFoAiTAtTYPZJ3hw9wNxx+BIBOijnlG9PnrJsCcSjs1wyyD6vJpaYtgnzDrKYRSqf3OO6Rfa93xsRg==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.4"
      },
      "funding": {
        "url": "https://github.com/sponsors/ljharb"
      }
    },
    "node_modules/has-symbols": {
      "version": "1.1.0",
      "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.1.0.tgz",
      "integrity": "sha512-1cDNdwJ2Jaohmb3sg4OmKaMBwuC48sYni5HUw2DvsC8LjGTLK9h+eb1X6RyuOHe4hT0ULCW68iomhjUoKUqlPQ==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.4"
      },
      "funding": {
        "url": "https://github.com/sponsors/ljharb"
      }
    },
    "node_modules/has-tostringtag": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/has-tostringtag/-/has-tostringtag-1.0.2.tgz",
      "integrity": "sha512-NqADB8VjPFLM2V0VvHUewwwsw0ZWBaIdgo+ieHtK3hasLz4qeCRjYcqfB6AQrBggRKppKF8L52/VqdVsO47Dlw==",
      "license": "MIT",
      "dependencies": {
        "has-symbols": "^1.0.3"
      },
      "engines": {
        "node": ">= 0.4"
      },
      "funding": {
        "url": "https://github.com/sponsors/ljharb"
      }
    },
    "node_modules/hasown": {
      "version": "2.0.4",
      "resolved": "https://registry.npmjs.org/hasown/-/hasown-2.0.4.tgz",
      "integrity": "sha512-T2UbfbBEF32wiepXIsMlTW9+dDYC6wMh/t/vYA4tuOMKqWz/n3vr1NFSxQiyP+zk2mXsoMA/i/7qV6LKut1t1A==",
      "license": "MIT",
      "dependencies": {
        "function-bind": "^1.1.2"
      },
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/https-proxy-agent": {
      "version": "5.0.1",
      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
      "integrity": "sha512-dFcAjpTQFgoLMzC2VwU+C/CbS7uRL0lWmxDITmqm7C+7F0Odmj6s9l6alZc6AELXhrnggM2CeWSXHGOdX2YtwA==",
      "license": "MIT",
      "dependencies": {
        "agent-base": "6",
        "debug": "4"
      },
      "engines": {
        "node": ">= 6"
      }
    },
    "node_modules/math-intrinsics": {
      "version": "1.1.0",
      "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",
      "integrity": "sha512-/IXtbwEk5HTPyEwyKX6hGkYXxM9nbj64B+ilVJnC/R6B0pH5G4V3b0pVbL7DBj4tkhBAppbQUlf6F6Xl9LHu1g==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.4"
      }
    },
    "node_modules/mime-db": {
      "version": "1.52.0",
      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
      "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.6"
      }
    },
    "node_modules/mime-types": {
      "version": "2.1.35",
      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
      "integrity": "sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==",
      "license": "MIT",
      "dependencies": {
        "mime-db": "1.52.0"
      },
      "engines": {
        "node": ">= 0.6"
      }
    },
    "node_modules/ms": {
      "version": "2.1.3",
      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
      "license": "MIT"
    },
    "node_modules/proxy-from-env": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-2.1.0.tgz",
      "integrity": "sha512-cJ+oHTW1VAEa8cJslgmUZrc+sjRKgAKl3Zyse6+PV38hZe/V6Z14TbCuXcan9F9ghlz4QrFr2c92TNF82UkYHA==",
      "license": "MIT",
      "engines": {
        "node": ">=10"
      }
    }
  }
}

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, []);

原始种子者

csx-seed