vite 5.4.14: mergeConfig

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:npm/vite@5.4.14
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/vite@5.4.14
Demonstrate these symbols/APIs:
  - vite.mergeConfig

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:55196b3de9e582508e3f59454186a8b2f1e14054b102522e70fec17776dee095","contract":["mergeConfig is exported as a named function from vite","mergeConfig deeply merges nested configuration objects without mutating input configurations","mergeConfig overrides primitive configuration values with values from overrides","mergeConfig concatenates plugin array configurations preserving order from both defaults and overrides","mergeConfig merges object alias configurations with overrides taking precedence over defaults","mergeConfig merges array alias configurations by prepending override entries before default entries","mergeConfig merges define replacement configurations overriding common keys while preserving distinct keys"],"goal":"verify pkg:npm/vite@5.4.14","kind":"HOW","packages":["pkg:npm/vite@5.4.14"],"schemaVersion":1,"symbols":["vite.mergeConfig"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/vite@5.4.14"],"schemaVersion":1,"subject":"pkg:npm/vite@5.4.14","symbols":["vite.mergeConfig"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-vite",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-vite",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "vite": "5.4.14"
      }
    },
    "node_modules/@esbuild/aix-ppc64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.21.5.tgz",
      "integrity": "sha512-1SDgH6ZSPTlggy1yI6+Dbkiz8xzpHJEVAlF/AM1tHPLsf5STom9rwtjE4hKAF20FfXXNTFqEYXyJNWh1GiZedQ==",
      "cpu": [
        "ppc64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "aix"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/android-arm": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.21.5.tgz",
      "integrity": "sha512-vCPvzSjpPHEi1siZdlvAlsPxXl7WbOVUBBAowWug4rJHb68Ox8KualB+1ocNvT5fjv6wpkX6o/iEpbDrf68zcg==",
      "cpu": [
        "arm"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "android"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/android-arm64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.21.5.tgz",
      "integrity": "sha512-c0uX9VAUBQ7dTDCjq+wdyGLowMdtR/GoC2U5IYk/7D1H1JYC0qseD7+11iMP2mRLN9RcCMRcjC4YMclCzGwS/A==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "android"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/android-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.21.5.tgz",
      "integrity": "sha512-D7aPRUUNHRBwHxzxRvp856rjUHRFW1SdQATKXH2hqA0kAZb1hKmi02OpYRacl0TxIGz/ZmXWlbZgjwWYaCakTA==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "android"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/darwin-arm64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.21.5.tgz",
      "integrity": "sha512-DwqXqZyuk5AiWWf3UfLiRDJ5EDd49zg6O9wclZ7kUMv2WRFr4HKjXp/5t8JZ11QbQfUS6/cRCKGwYhtNAY88kQ==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "darwin"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/darwin-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.21.5.tgz",
      "integrity": "sha512-se/JjF8NlmKVG4kNIuyWMV/22ZaerB+qaSi5MdrXtd6R08kvs2qCN4C09miupktDitvh8jRFflwGFBQcxZRjbw==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "darwin"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/freebsd-arm64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.21.5.tgz",
      "integrity": "sha512-5JcRxxRDUJLX8JXp/wcBCy3pENnCgBR9bN6JsY4OmhfUtIHe3ZW0mawA7+RDAcMLrMIZaf03NlQiX9DGyB8h4g==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "freebsd"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/freebsd-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.21.5.tgz",
      "integrity": "sha512-J95kNBj1zkbMXtHVH29bBriQygMXqoVQOQYA+ISs0/2l3T9/kj42ow2mpqerRBxDJnmkUDCaQT/dfNXWX/ZZCQ==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "freebsd"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-arm": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.21.5.tgz",
      "integrity": "sha512-bPb5AHZtbeNGjCKVZ9UGqGwo8EUu4cLq68E95A53KlxAPRmUyYv2D6F0uUI65XisGOL1hBP5mTronbgo+0bFcA==",
      "cpu": [
        "arm"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-arm64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.21.5.tgz",
      "integrity": "sha512-ibKvmyYzKsBeX8d8I7MH/TMfWDXBF3db4qM6sy+7re0YXya+K1cem3on9XgdT2EQGMu4hQyZhan7TeQ8XkGp4Q==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-ia32": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.21.5.tgz",
      "integrity": "sha512-YvjXDqLRqPDl2dvRODYmmhz4rPeVKYvppfGYKSNGdyZkA01046pLWyRKKI3ax8fbJoK5QbxblURkwK/MWY18Tg==",
      "cpu": [
        "ia32"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-loong64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.21.5.tgz",
      "integrity": "sha512-uHf1BmMG8qEvzdrzAqg2SIG/02+4/DHB6a9Kbya0XDvwDEKCoC8ZRWI5JJvNdUjtciBGFQ5PuBlpEOXQj+JQSg==",
      "cpu": [
        "loong64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-mips64el": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.21.5.tgz",
      "integrity": "sha512-IajOmO+KJK23bj52dFSNCMsz1QP1DqM6cwLUv3W1QwyxkyIWecfafnI555fvSGqEKwjMXVLokcV5ygHW5b3Jbg==",
      "cpu": [
        "mips64el"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-ppc64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-ppc64/-/linux-ppc64-0.21.5.tgz",
      "integrity": "sha512-1hHV/Z4OEfMwpLO8rp7CvlhBDnjsC3CttJXIhBi+5Aj5r+MBvy4egg7wCbe//hSsT+RvDAG7s81tAvpL2XAE4w==",
      "cpu": [
        "ppc64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-riscv64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.21.5.tgz",
      "integrity": "sha512-2HdXDMd9GMgTGrPWnJzP2ALSokE/0O5HhTUvWIbD3YdjME8JwvSCnNGBnTThKGEB91OZhzrJ4qIIxk/SBmyDDA==",
      "cpu": [
        "riscv64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-s390x": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.21.5.tgz",
      "integrity": "sha512-zus5sxzqBJD3eXxwvjN1yQkRepANgxE9lgOW2qLnmr8ikMTphkjgXu1HR01K4FJg8h1kEEDAqDcZQtbrRnB41A==",
      "cpu": [
        "s390x"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/linux-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/linux-x64/-/linux-x64-0.21.5.tgz",
      "integrity": "sha512-1rYdTpyv03iycF1+BhzrzQJCdOuAOtaqHTWJZCWvijKD2N5Xu0TtVC8/+1faWqcP9iBCWOmjmhoH94dH82BxPQ==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/netbsd-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/netbsd-x64/-/netbsd-x64-0.21.5.tgz",
      "integrity": "sha512-Woi2MXzXjMULccIwMnLciyZH4nCIMpWQAs049KEeMvOcNADVxo0UBIQPfSmxB3CWKedngg7sWZdLvLczpe0tLg==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "netbsd"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/openbsd-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/openbsd-x64/-/openbsd-x64-0.21.5.tgz",
      "integrity": "sha512-HLNNw99xsvx12lFBUwoT8EVCsSvRNDVxNpjZ7bPn947b8gJPzeHWyNVhFsaerc0n3TsbOINvRP2byTZ5LKezow==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "openbsd"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/sunos-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/sunos-x64/-/sunos-x64-0.21.5.tgz",
      "integrity": "sha512-6+gjmFpfy0BHU5Tpptkuh8+uw3mnrvgs+dSPQXQOv3ekbordwnzTVEb4qnIvQcYXq6gzkyTnoZ9dZG+D4garKg==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "sunos"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/win32-arm64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.21.5.tgz",
      "integrity": "sha512-Z0gOTd75VvXqyq7nsl93zwahcTROgqvuAcYDUr+vOv8uHhNSKROyU961kgtCD1e95IqPKSQKH7tBTslnS3tA8A==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "win32"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/win32-ia32": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/win32-ia32/-/win32-ia32-0.21.5.tgz",
      "integrity": "sha512-SWXFF1CL2RVNMaVs+BBClwtfZSvDgtL//G/smwAc5oVK/UPu2Gu9tIaRgFmYFFKrmg3SyAjSrElf0TiJ1v8fYA==",
      "cpu": [
        "ia32"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "win32"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@esbuild/win32-x64": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/@esbuild/win32-x64/-/win32-x64-0.21.5.tgz",
      "integrity": "sha512-tQd/1efJuzPC6rCFwEvLtci/xNFcTZknmXs98FYDfGE4wP9ClFV98nyKrzJKVPMhdDnjzLhdUyMX4PsQAPjwIw==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "win32"
      ],
      "engines": {
        "node": ">=12"
      }
    },
    "node_modules/@napi-rs/lzma-linux-x64-gnu": {
      "version": "1.5.1",
      "resolved": "https://registry.npmjs.org/@napi-rs/lzma-linux-x64-gnu/-/lzma-linux-x64-gnu-1.5.1.tgz",
      "integrity": "sha512-oTXEIha4SsuXdTA4Iyskj0kpdx2yVXdhd75c2v3xGrHFfVMsbhTPZU/nMPL4sWKo4pBHm3aucLaqGlF696dTyQ==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ],
      "engines": {
        "node": "^22.20 || ^24.12 || >=25"
      }
    },
    "node_modules/@rollup/rollup-android-arm-eabi": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.63.1.tgz",
      "integrity": "sha512-UZ8sUxPTiHWYX9QNdJedb1kDZSpS1t/VPWBWGSgqHNi9w3Cu6IXvu2mzbhiTiPvtrqgTQJ+zqiAq2iPIPilpaQ==",
      "cpu": [
        "arm"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "android"
      ]
    },
    "node_modules/@rollup/rollup-android-arm64": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.63.1.tgz",
      "integrity": "sha512-cQ4nFQABN5cDvDpbvJ7bMStCpnaVxynZrRMfUJYgxcIk9Sh54FIO1vtfkg0B69REjER77ioZ/ov+eAApx/KmLQ==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "android"
      ]
    },
    "node_modules/@rollup/rollup-darwin-arm64": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.63.1.tgz",
      "integrity": "sha512-FQNqd1lRy/0QhDk3xeRIkSBiCpXCiDnZO3YLVdcDKN1UBiKToNftCzcXYNLshmPDUMlu2TdeS8tGcsU6f3YF1Q==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "darwin"
      ]
    },
    "node_modules/@rollup/rollup-darwin-x64": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.63.1.tgz",
      "integrity": "sha512-pvD16V939D3CloK0+qikpGaxiPrDUXTe7Y5cWOMkMSy7m1cawa8EGy/kXYi/G/cKAC4HDAbSnzCIk1WmsoOKXg==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "darwin"
      ]
    },
    "node_modules/@rollup/rollup-freebsd-arm64": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-arm64/-/rollup-freebsd-arm64-4.63.1.tgz",
      "integrity": "sha512-pcFGeL2345VwdTnJhA6zLbew+YgWB0qBG2+dMtXjCicf6+rm6kO6cOoh5VnTe0ZMrMRgRyuHmCJxZWrIdzYuOw==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "freebsd"
      ]
    },
    "node_modules/@rollup/rollup-freebsd-x64": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-x64/-/rollup-freebsd-x64-4.63.1.tgz",
      "integrity": "sha512-mRJlqSRulVzcKq/LKA6ICSIc3K/l4fzlVn/gePn2nXIHy8seRi5z/eeRE0d/XMBxcMldiXtQTSpRj0tkkC3g8Q==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "freebsd"
      ]
    },
    "node_modules/@rollup/rollup-linux-arm-gnueabihf": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.63.1.tgz",
      "integrity": "sha512-YDUNvVM85TI3g/1OpnqKP1h4NeW/j64DfWMf+G3M809xNk1bJSnpFp4sh83NpmVE5DXnkh8ULor4LTVZKoYLHw==",
      "cpu": [
        "arm"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-arm-musleabihf": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.63.1.tgz",
      "integrity": "sha512-7Mcn71p9ZuQFAj+h+dhQXy/yeLePRS2yKRnmW1DijA9thKO5qap0GNOIQK4yQ6iP3SU0Mrb/yWo8h8vgRba8lw==",
      "cpu": [
        "arm"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-arm64-gnu": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.63.1.tgz",
      "integrity": "sha512-4YiLQTX6U4CSl0L9cluep9A9W6UmTfqBDc2/CH6wlu54pl4E7Jn3cOD8oxzvBDEGk/JMKgJ47C8g+radF7mwvg==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-arm64-musl": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.63.1.tgz",
      "integrity": "sha512-2ra8F7w8OquwZN9z2/fKFnli69wa8PLwaVzRMIPGb13ByMJwC28Fbp8YcVGoUhlYMTt7j5j9bNgpysrN2UM+vw==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-loong64-gnu": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-gnu/-/rollup-linux-loong64-gnu-4.63.1.tgz",
      "integrity": "sha512-Sy20ncyhjmBP0Ml+UvQbimjlk6VFgjW5uNP+qqwHB00mTE8Bl2C1TuHTlRwK2YoXeZbee5lP2XevBWVkAQAtSQ==",
      "cpu": [
        "loong64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-loong64-musl": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-musl/-/rollup-linux-loong64-musl-4.63.1.tgz",
      "integrity": "sha512-noITLp8oNjYliPnGWmLyelIHwULGqbHloQHGw1rtxbWhTuWooRpnZarZQJ1y9EUC4szuCusCc+HEpUtxpIwYvA==",
      "cpu": [
        "loong64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-ppc64-gnu": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-gnu/-/rollup-linux-ppc64-gnu-4.63.1.tgz",
      "integrity": "sha512-hlxxXd+F1mWiAcaFR7Sv9ZQT6m6UfI8+Vy/kFJzztq2pDMU/0wZ9sish0iszNZvsQDo8Gc0i5yuFEOz5dDf6fA==",
      "cpu": [
        "ppc64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-ppc64-musl": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-musl/-/rollup-linux-ppc64-musl-4.63.1.tgz",
      "integrity": "sha512-EF7OpqQTQ/BvGqLzUi4rEHuagCV9MugAUXSHemwPW5vxZ75RR+jxO/2j95Ph2dalMpFHSVECjRoioHZgA9zOYA==",
      "cpu": [
        "ppc64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-riscv64-gnu": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.63.1.tgz",
      "integrity": "sha512-wQO3JesW9PRkwlabQ27y7sPfVOOTLRG73I4F2UYHG5PXun3J9U3y+b7ezVKSYbsvSKGQ1k1cq8Qlun4C9kLt3w==",
      "cpu": [
        "riscv64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-riscv64-musl": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-musl/-/rollup-linux-riscv64-musl-4.63.1.tgz",
      "integrity": "sha512-ouAGwhO6wHRXdnOVCOsB0tRFkA7nhNB2Nwax6oECXN0YiN8EYUTBAOudADOB1PI+yDL61TeNx/u7MVCzksNbkQ==",
      "cpu": [
        "riscv64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-s390x-gnu": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.63.1.tgz",
      "integrity": "sha512-q2R38Sn+1J8RxhfJ+T54wSWmyKXWec+9jgDfqO2AtArEqHO5R2aeayp5H5OYLr5UYDVGsVaZPEFUooMhYCdz5A==",
      "cpu": [
        "s390x"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-x64-gnu": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.63.1.tgz",
      "integrity": "sha512-gfI5T24WLLuFfSKw7Go/zDXjAAV0fny0swTaDv+WjK7vqcw4cRhFfdsyKL1n+ukI+ooBxn3bVQnyrn06WpI50w==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-linux-x64-musl": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.63.1.tgz",
      "integrity": "sha512-4h6XqthmB4Hspji84wvgk+ElodTsGj+dbZqHJHHtKxj4mYq0ANSEEPX9ys3moJueqsRjwpaJYH7874Itwnj2ow==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "linux"
      ]
    },
    "node_modules/@rollup/rollup-openbsd-x64": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-openbsd-x64/-/rollup-openbsd-x64-4.63.1.tgz",
      "integrity": "sha512-dlfCOa87o1VAYegLQ9EKilx2JCeRofiyPGhTCmqnuXZ6bMPiycO1rq1+sKoulAp7pGLIsTIw+1x5R+zgh5LhhA==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "openbsd"
      ]
    },
    "node_modules/@rollup/rollup-openharmony-arm64": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-openharmony-arm64/-/rollup-openharmony-arm64-4.63.1.tgz",
      "integrity": "sha512-cjkLbOlfcm3QGhMM1J5zaZjsw1GggbN6rw9UTSSRrPrR1KkcXnN7Uq9rPw34xImQ9VOY9GN+6u2Zj80B9ptkcw==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "openharmony"
      ]
    },
    "node_modules/@rollup/rollup-win32-arm64-msvc": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.63.1.tgz",
      "integrity": "sha512-Li1KdUnWGE4N3e1F/B4RTB1ms+nG4WBgjByO46pkeBVX/2UBsY53xf5vK9WygVmnH3RwncIST7lkSdLSY6P9lg==",
      "cpu": [
        "arm64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "win32"
      ]
    },
    "node_modules/@rollup/rollup-win32-ia32-msvc": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.63.1.tgz",
      "integrity": "sha512-t4ZYOSoLTgwhuFMrmTMLx/+i1DQVK7HYqMc6kY46EApwi8X0nIVphzdNoThU3xt6n+N5urG1/gxBdCaKDLavfg==",
      "cpu": [
        "ia32"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "win32"
      ]
    },
    "node_modules/@rollup/rollup-win32-x64-gnu": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-gnu/-/rollup-win32-x64-gnu-4.63.1.tgz",
      "integrity": "sha512-RgroPfMmKlD1RzSDxvwgcPiy2HNQKoYV7OmwIXDsk73uKW5t6B/V8KIy27SMv/FNXFo/oSBtWc9J0X7t91ezZg==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "win32"
      ]
    },
    "node_modules/@rollup/rollup-win32-x64-msvc": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.63.1.tgz",
      "integrity": "sha512-at8QVep6S3h5Y6gSbdGU06bRY5WJkf6WUduM9YtvYMbYhB1MOFfUgc6kehitQXzOtMSaT70q7f9ydPhpqu821w==",
      "cpu": [
        "x64"
      ],
      "license": "MIT",
      "optional": true,
      "os": [
        "win32"
      ]
    },
    "node_modules/@types/estree": {
      "version": "1.0.9",
      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.9.tgz",
      "integrity": "sha512-GhdPgy1el4/ImP05X05Uw4cw2/M93BCUmnEvWZNStlCzEKME4Fkk+YpoA5OiHNQmoS7Cafb8Xa3Pya8m1Qrzeg==",
      "license": "MIT"
    },
    "node_modules/esbuild": {
      "version": "0.21.5",
      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.21.5.tgz",
      "integrity": "sha512-mg3OPMV4hXywwpoDxu3Qda5xCKQi+vCTZq8S9J/EpkhB2HzKXq4SNFZE3+NK93JYxc8VMSep+lOUSC/RVKaBqw==",
      "hasInstallScript": true,
      "license": "MIT",
      "bin": {
        "esbuild": "bin/esbuild"
      },
      "engines": {
        "node": ">=12"
      },
      "optionalDependencies": {
        "@esbuild/aix-ppc64": "0.21.5",
        "@esbuild/android-arm": "0.21.5",
        "@esbuild/android-arm64": "0.21.5",
        "@esbuild/android-x64": "0.21.5",
        "@esbuild/darwin-arm64": "0.21.5",
        "@esbuild/darwin-x64": "0.21.5",
        "@esbuild/freebsd-arm64": "0.21.5",
        "@esbuild/freebsd-x64": "0.21.5",
        "@esbuild/linux-arm": "0.21.5",
        "@esbuild/linux-arm64": "0.21.5",
        "@esbuild/linux-ia32": "0.21.5",
        "@esbuild/linux-loong64": "0.21.5",
        "@esbuild/linux-mips64el": "0.21.5",
        "@esbuild/linux-ppc64": "0.21.5",
        "@esbuild/linux-riscv64": "0.21.5",
        "@esbuild/linux-s390x": "0.21.5",
        "@esbuild/linux-x64": "0.21.5",
        "@esbuild/netbsd-x64": "0.21.5",
        "@esbuild/openbsd-x64": "0.21.5",
        "@esbuild/sunos-x64": "0.21.5",
        "@esbuild/win32-arm64": "0.21.5",
        "@esbuild/win32-ia32": "0.21.5",
        "@esbuild/win32-x64": "0.21.5"
      }
    },
    "node_modules/fsevents": {
      "version": "2.3.3",
      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.3.tgz",
      "integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==",
      "hasInstallScript": true,
      "license": "MIT",
      "optional": true,
      "os": [
        "darwin"
      ],
      "engines": {
        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
      }
    },
    "node_modules/nanoid": {
      "version": "3.3.18",
      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.18.tgz",
      "integrity": "sha512-DTg4MJbGMWkfi6VZFdNt2/caMbQy4Ou+Op/hJQvGEWcnVfoA1QA+xzRKAzw9jD6+GVOOeYr/mIcuDSdug6F6+w==",
      "funding": [
        {
          "type": "github",
          "url": "https://github.com/sponsors/ai"
        }
      ],
      "license": "MIT",
      "bin": {
        "nanoid": "bin/nanoid.cjs"
      },
      "engines": {
        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
      }
    },
    "node_modules/picocolors": {
      "version": "1.1.1",
      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
      "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==",
      "license": "ISC"
    },
    "node_modules/postcss": {
      "version": "8.5.28",
      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.28.tgz",
      "integrity": "sha512-RRuzqDtt5Y9h3quz5hWhK+TPnsmVs6WwSU6LkJMeY4HstUEDuYTG8UJSdawMRzmzAtV+KEoG8N3Qg2qLy5vM/A==",
      "funding": [
        {
          "type": "opencollective",
          "url": "https://opencollective.com/postcss/"
        },
        {
          "type": "tidelift",
          "url": "https://tidelift.com/funding/github/npm/postcss"
        },
        {
          "type": "github",
          "url": "https://github.com/sponsors/ai"
        }
      ],
      "license": "MIT",
      "dependencies": {
        "nanoid": "^3.3.18",
        "picocolors": "^1.1.1",
        "source-map-js": "^1.2.1"
      },
      "engines": {
        "node": "^10 || ^12 || >=14"
      }
    },
    "node_modules/rollup": {
      "version": "4.63.1",
      "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.63.1.tgz",
      "integrity": "sha512-3Df9jsstwhccuEfmAMi9l8XUh/GOkVObmFTU7CCVBysEbcOZLl84jCtaAZMcPiMz2EGKsATzQcU+Xr3n/wU6cg==",
      "license": "MIT",
      "dependencies": {
        "@types/estree": "1.0.9"
      },
      "bin": {
        "rollup": "dist/bin/rollup"
      },
      "engines": {
        "node": ">=18.0.0",
        "npm": ">=8.0.0"
      },
      "optionalDependencies": {
        "@napi-rs/lzma-linux-x64-gnu": "1.5.1",
        "@rollup/rollup-android-arm-eabi": "4.63.1",
        "@rollup/rollup-android-arm64": "4.63.1",
        "@rollup/rollup-darwin-arm64": "4.63.1",
        "@rollup/rollup-darwin-x64": "4.63.1",
        "@rollup/rollup-freebsd-arm64": "4.63.1",
        "@rollup/rollup-freebsd-x64": "4.63.1",
        "@rollup/rollup-linux-arm-gnueabihf": "4.63.1",
        "@rollup/rollup-linux-arm-musleabihf": "4.63.1",
        "@rollup/rollup-linux-arm64-gnu": "4.63.1",
        "@rollup/rollup-linux-arm64-musl": "4.63.1",
        "@rollup/rollup-linux-loong64-gnu": "4.63.1",
        "@rollup/rollup-linux-loong64-musl": "4.63.1",
        "@rollup/rollup-linux-ppc64-gnu": "4.63.1",
        "@rollup/rollup-linux-ppc64-musl": "4.63.1",
        "@rollup/rollup-linux-riscv64-gnu": "4.63.1",
        "@rollup/rollup-linux-riscv64-musl": "4.63.1",
        "@rollup/rollup-linux-s390x-gnu": "4.63.1",
        "@rollup/rollup-linux-x64-gnu": "4.63.1",
        "@rollup/rollup-linux-x64-musl": "4.63.1",
        "@rollup/rollup-openbsd-x64": "4.63.1",
        "@rollup/rollup-openharmony-arm64": "4.63.1",
        "@rollup/rollup-win32-arm64-msvc": "4.63.1",
        "@rollup/rollup-win32-ia32-msvc": "4.63.1",
        "@rollup/rollup-win32-x64-gnu": "4.63.1",
        "@rollup/rollup-win32-x64-msvc": "4.63.1",
        "fsevents": "~2.3.2"
      }
    },
    "node_modules/source-map-js": {
      "version": "1.2.1",
      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
      "integrity": "sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==",
      "license": "BSD-3-Clause",
      "engines": {
        "node": ">=0.10.0"
      }
    },
    "node_modules/vite": {
      "version": "5.4.14",
      "resolved": "https://registry.npmjs.org/vite/-/vite-5.4.14.tgz",
      "integrity": "sha512-EK5cY7Q1D8JNhSaPKVK4pwBFvaTmZxEnoKXLG/U9gmdDcihQGNzFlgIvaxezFR4glP1LsuiedwMBqCXH3wZccA==",
      "license": "MIT",
      "dependencies": {
        "esbuild": "^0.21.3",
        "postcss": "^8.4.43",
        "rollup": "^4.20.0"
      },
      "bin": {
        "vite": "bin/vite.js"
      },
      "engines": {
        "node": "^18.0.0 || >=20.0.0"
      },
      "funding": {
        "url": "https://github.com/vitejs/vite?sponsor=1"
      },
      "optionalDependencies": {
        "fsevents": "~2.3.3"
      },
      "peerDependencies": {
        "@types/node": "^18.0.0 || >=20.0.0",
        "less": "*",
        "lightningcss": "^1.21.0",
        "sass": "*",
        "sass-embedded": "*",
        "stylus": "*",
        "sugarss": "*",
        "terser": "^5.4.0"
      },
      "peerDependenciesMeta": {
        "@types/node": {
          "optional": true
        },
        "less": {
          "optional": true
        },
        "lightningcss": {
          "optional": true
        },
        "sass": {
          "optional": true
        },
        "sass-embedded": {
          "optional": true
        },
        "stylus": {
          "optional": true
        },
        "sugarss": {
          "optional": true
        },
        "terser": {
          "optional": true
        }
      }
    }
  }
}

{
  "name": "sample-vite",
  "version": "1.0.0",
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "vite": "5.4.14"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/vite@5.4.14",
  "kind": "HOW",
  "packages": [
    "pkg:npm/vite@5.4.14"
  ],
  "symbols": [
    "vite.mergeConfig"
  ]
}

import assert from 'node:assert/strict';
import { mergeConfig } from 'vite';

async function testContract() {
  // 1. mergeConfig is exported as a named function from vite
  assert.equal(typeof mergeConfig, 'function');
  assert.equal(mergeConfig.name, 'mergeConfig');

  // 2. mergeConfig deeply merges nested configuration objects without mutating input configurations
  const defaultServer = { server: { port: 3000, host: 'localhost' } };
  const overrideServer = { server: { port: 8080, open: true } };
  const mergedServer = mergeConfig(defaultServer, overrideServer);
  assert.deepEqual(mergedServer.server, { port: 8080, host: 'localhost', open: true });
  assert.equal(defaultServer.server.port, 3000);
  assert.equal(defaultServer.server.open, undefined);
  assert.equal(overrideServer.server.host, undefined);

  // 3. mergeConfig overrides primitive configuration values with values from overrides
  const defaultPrimitives = { base: './', mode: 'development', root: '/app' };
  const overridePrimitives = { base: '/dist/' };
  const mergedPrimitives = mergeConfig(defaultPrimitives, overridePrimitives);
  assert.equal(mergedPrimitives.base, '/dist/');
  assert.equal(mergedPrimitives.mode, 'development');
  assert.equal(mergedPrimitives.root, '/app');

  // 4. mergeConfig concatenates plugin array configurations preserving order from both defaults and overrides
  const pluginA = { name: 'plugin-a' };
  const pluginB = { name: 'plugin-b' };
  const defaultPlugins = { plugins: [pluginA] };
  const overridePlugins = { plugins: [pluginB] };
  const mergedPlugins = mergeConfig(defaultPlugins, overridePlugins);
  assert.equal(Array.isArray(mergedPlugins.plugins), true);
  assert.equal(mergedPlugins.plugins.length, 2);
  assert.equal(mergedPlugins.plugins[0], pluginA);
  assert.equal(mergedPlugins.plugins[1], pluginB);

  // 5. mergeConfig merges object alias configurations with overrides taking precedence over defaults
  const defaultObjAlias = { resolve: { alias: { '@': '/src', utils: '/src/utils' } } };
  const overrideObjAlias = { resolve: { alias: { '@components': '/src/components', '@': '/src/override' } } };
  const mergedObjAlias = mergeConfig(defaultObjAlias, overrideObjAlias);
  assert.deepEqual(mergedObjAlias.resolve.alias, {
    '@': '/src/override',
    utils: '/src/utils',
    '@components': '/src/components'
  });

  // 6. mergeConfig merges array alias configurations by prepending override entries before default entries
  const defaultArrAlias = { resolve: { alias: [{ find: '@', replacement: '/src' }] } };
  const overrideArrAlias = { resolve: { alias: [{ find: 'utils', replacement: '/src/utils' }] } };
  const mergedArrAlias = mergeConfig(defaultArrAlias, overrideArrAlias);
  assert.deepEqual(mergedArrAlias.resolve.alias, [
    { find: 'utils', replacement: '/src/utils' },
    { find: '@', replacement: '/src' }
  ]);

  // 7. mergeConfig merges define replacement configurations overriding common keys while preserving distinct keys
  const defaultDefine = { define: { __APP_VERSION__: '"1.0.0"', __FEATURE_X__: 'true' } };
  const overrideDefine = { define: { __FEATURE_X__: 'false', __BUILD_TIME__: '"2026-09-07"' } };
  const mergedDefine = mergeConfig(defaultDefine, overrideDefine);
  assert.deepEqual(mergedDefine.define, {
    __APP_VERSION__: '"1.0.0"',
    __FEATURE_X__: 'false',
    __BUILD_TIME__: '"2026-09-07"'
  });
}

testContract().catch((err) => {
  console.error('Contract test failed:', err);
  process.exit(1);
});