CodeSampleX

Sample

jest-haste-map 29.7.0: crawl files and build haste map with JestHasteMap

Verified sample for npm jest-haste-map 29.7.0: crawl files and build haste map with JestHasteMap. The contract ran on node 22 · linux alpine/x64 · docker and…

sha256:4b90f9873b3f0f4c8e4d4cbc3ef9e3af98c47981a59fde8ee5372f92b20781dd

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment linux 24 · ubuntu · glibc 2.39 x64 npm

Verification-run environments

Environment Contract Stages Run
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…		 2026-08-27

Case

HOW
Goal
crawl files and build haste map with JestHasteMap
Packages
Symbols
  • HasteMap.build
  • HasteMap.create
Created
2026-08-27T12:18:21Z

Contract

  1. HasteMap.create instantiates a file crawler with specified roots and extensions
  2. HasteMap.prototype.build crawls target directory and returns hasteFS and moduleMap
  3. hasteFS.getAllFiles returns indexed file paths in the crawled directory
  4. hasteFS.exists verifies presence of indexed files and absence of missing files
  5. hasteFS.matchFiles filters indexed files matching a regular expression

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • test/contract.mjs

Download the source artifact (tar.gz)

Source

PROMPT.md
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: crawl files and build haste map with JestHasteMap
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-haste-map@29.7.0
Demonstrate these symbols/APIs:
  - HasteMap.build
  - HasteMap.create

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.
csx.json
{"case":{"caseId":"case:sha256:e580d0faf8ac192e7e51c02293871cde689d60e3e4c936a9fc72db51181d3bf0","contract":["HasteMap.create instantiates a file crawler with specified roots and extensions","HasteMap.prototype.build crawls target directory and returns hasteFS and moduleMap","hasteFS.getAllFiles returns indexed file paths in the crawled directory","hasteFS.exists verifies presence of indexed files and absence of missing files","hasteFS.matchFiles filters indexed files matching a regular expression"],"goal":"crawl files and build haste map with JestHasteMap","kind":"HOW","packages":["pkg:npm/jest-haste-map@29.7.0"],"schemaVersion":1,"symbols":["HasteMap.build","HasteMap.create"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/jest-haste-map@29.7.0"],"schemaVersion":1,"subject":"pkg:npm/jest-haste-map@29.7.0","symbols":["HasteMap.build","HasteMap.create"],"verifierAdapter":"node-typescript@1"}
package-lock.json
{
  "name": "sample-jest-haste-map-crawl",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-jest-haste-map-crawl",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "jest-haste-map": "29.7.0"
      }
    },
    "node_modules/@jest/schemas": {
      "version": "29.6.3",
      "resolved": "https://registry.npmjs.org/@jest/schemas/-/schemas-29.6.3.tgz",
      "integrity": "sha512-mo5j5X+jIZmJQveBKeS/clAueipV7KgiX1vMgCxam1RNYiqE1w62n0/tJJnHtjW8ZHcQco5gY85jA3mi0L+nSA==",
      "license": "MIT",
      "dependencies": {
        "@sinclair/typebox": "^0.27.8"
      },
      "engines": {
        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
      }
    },
    "node_modules/@jest/types": {
      "version": "29.6.3",
      "resolved": "https://registry.npmjs.org/@jest/types/-/types-29.6.3.tgz",
      "integrity": "sha512-u3UPsIilWKOM3F9CXtrG8LEJmNxwoCQC/XVj4IKYXvvpx7QIi/Kg1LI5uDmDpKlac62NUtX7eLjRh+jVZcLOzw==",
      "license": "MIT",
      "dependencies": {
        "@jest/schemas": "^29.6.3",
        "@types/istanbul-lib-coverage": "^2.0.0",
        "@types/istanbul-reports": "^3.0.0",
        "@types/node": "*",
        "@types/yargs": "^17.0.8",
        "chalk": "^4.0.0"
      },
      "engines": {
        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
      }
    },
    "node_modules/@sinclair/typebox": {
      "version": "0.27.12",
      "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.27.12.tgz",
      "integrity": "sha512-hhyNJ+nbR6ZR7pToHvllEFun9TL0sbL+tk/ON75lo+Xas054uez98qRbsuNt7MBCyZKK4+8Yli/OAGZhmfBZ/g==",
      "license": "MIT"
    },
    "node_modules/@types/graceful-fs": {
      "version": "4.1.9",
      "resolved": "https://registry.npmjs.org/@types/graceful-fs/-/graceful-fs-4.1.9.tgz",
      "integrity": "sha512-olP3sd1qOEe5dXTSaFvQG+02VdRXcdytWLAZsAq1PecU8uqQAhkrnbli7DagjtXKW/Bl7YJbUsa8MPcuc8LHEQ==",
      "license": "MIT",
      "dependencies": {
        "@types/node": "*"
      }
    },
    "node_modules/@types/istanbul-lib-coverage": {
      "version": "2.0.6",
      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.6.tgz",
      "integrity": "sha512-2QF/t/auWm0lsy8XtKVPG19v3sSOQlJe/YHZgfjb/KBBHOGSV+J2q/S671rcq9uTBrLAXmZpqJiaQbMT+zNU1w==",
      "license": "MIT"
    },
    "node_modules/@types/istanbul-lib-report": {
      "version": "3.0.3",
      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-report/-/istanbul-lib-report-3.0.3.tgz",
      "integrity": "sha512-NQn7AHQnk/RSLOxrBbGyJM/aVQ+pjj5HCgasFxc0K/KhoATfQ/47AyUl15I2yBUpihjmas+a+VJBOqecrFH+uA==",
      "license": "MIT",
      "dependencies": {
        "@types/istanbul-lib-coverage": "*"
      }
    },
    "node_modules/@types/istanbul-reports": {
      "version": "3.0.4",
      "resolved": "https://registry.npmjs.org/@types/istanbul-reports/-/istanbul-reports-3.0.4.tgz",
      "integrity": "sha512-pk2B1NWalF9toCRu6gjBzR69syFjP4Od8WRAX+0mmf9lAjCRicLOWc+ZrxZHx/0XRjotgkF9t6iaMJ+aXcOdZQ==",
      "license": "MIT",
      "dependencies": {
        "@types/istanbul-lib-report": "*"
      }
    },
    "node_modules/@types/node": {
      "version": "26.4.0",
      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.4.0.tgz",
      "integrity": "sha512-faiGnoIrLH/V8cibOMEAZ8pMw6oXqSukl29ra4mN8GdaB2ZewzeaLj+INpV5N+Z1eKWzY+IzaIZH2EIR6YZRNQ==",
      "license": "MIT",
      "dependencies": {
        "undici-types": "~8.3.0"
      }
    },
    "node_modules/@types/yargs": {
      "version": "17.0.35",
      "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-17.0.35.tgz",
      "integrity": "sha512-qUHkeCyQFxMXg79wQfTtfndEC+N9ZZg76HJftDJp+qH2tV7Gj4OJi7l+PiWwJ+pWtW8GwSmqsDj/oymhrTWXjg==",
      "license": "MIT",
      "dependencies": {
        "@types/yargs-parser": "*"
      }
    },
    "node_modules/@types/yargs-parser": {
      "version": "21.0.3",
      "resolved": "https://registry.npmjs.org/@types/yargs-parser/-/yargs-parser-21.0.3.tgz",
      "integrity": "sha512-I4q9QU9MQv4oEOz4tAHJtNz1cwuLxn2F3xcc2iV5WdqLPpUnj30aUuxt1mAxYTG+oe8CZMV/+6rU4S4gRDzqtQ==",
      "license": "MIT"
    },
    "node_modules/ansi-styles": {
      "version": "4.3.0",
      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
      "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
      "license": "MIT",
      "dependencies": {
        "color-convert": "^2.0.1"
      },
      "engines": {
        "node": ">=8"
      },
      "funding": {
        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
      }
    },
    "node_modules/anymatch": {
      "version": "3.1.3",
      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz",
      "integrity": "sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==",
      "license": "ISC",
      "dependencies": {
        "normalize-path": "^3.0.0",
        "picomatch": "^2.0.4"
      },
      "engines": {
        "node": ">= 8"
      }
    },
    "node_modules/braces": {
      "version": "3.0.3",
      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
      "integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
      "license": "MIT",
      "dependencies": {
        "fill-range": "^7.1.1"
      },
      "engines": {
        "node": ">=8"
      }
    },
    "node_modules/bser": {
      "version": "2.1.1",
      "resolved": "https://registry.npmjs.org/bser/-/bser-2.1.1.tgz",
      "integrity": "sha512-gQxTNE/GAfIIrmHLUE3oJyp5FO6HRBfhjnw4/wMmA63ZGDJnWBmgY/lyQBpnDUkGmAhbSe39tx2d/iTOAfglwQ==",
      "license": "Apache-2.0",
      "dependencies": {
        "node-int64": "^0.4.0"
      }
    },
    "node_modules/chalk": {
      "version": "4.1.2",
      "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
      "integrity": "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==",
      "license": "MIT",
      "dependencies": {
        "ansi-styles": "^4.1.0",
        "supports-color": "^7.1.0"
      },
      "engines": {
        "node": ">=10"
      },
      "funding": {
        "url": "https://github.com/chalk/chalk?sponsor=1"
      }
    },
    "node_modules/ci-info": {
      "version": "3.9.0",
      "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-3.9.0.tgz",
      "integrity": "sha512-NIxF55hv4nSqQswkAeiOi1r83xy8JldOFDTWiug55KBu9Jnblncd2U6ViHmYgHf01TPZS77NJBhBMKdWj9HQMQ==",
      "funding": [
        {
          "type": "github",
          "url": "https://github.com/sponsors/sibiraj-s"
        }
      ],
      "license": "MIT",
      "engines": {
        "node": ">=8"
      }
    },
    "node_modules/color-convert": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
      "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
      "license": "MIT",
      "dependencies": {
        "color-name": "~1.1.4"
      },
      "engines": {
        "node": ">=7.0.0"
      }
    },
    "node_modules/color-name": {
      "version": "1.1.4",
      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
      "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
      "license": "MIT"
    },
    "node_modules/fb-watchman": {
      "version": "2.0.2",
      "resolved": "https://registry.npmjs.org/fb-watchman/-/fb-watchman-2.0.2.tgz",
      "integrity": "sha512-p5161BqbuCaSnB8jIbzQHOlpgsPmK5rJVDfDKO91Axs5NC1uu3HRQm6wt9cd9/+GtQQIO53JdGXXoyDpTAsgYA==",
      "license": "Apache-2.0",
      "dependencies": {
        "bser": "2.1.1"
      }
    },
    "node_modules/fill-range": {
      "version": "7.1.1",
      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
      "integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
      "license": "MIT",
      "dependencies": {
        "to-regex-range": "^5.0.1"
      },
      "engines": {
        "node": ">=8"
      }
    },
    "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/graceful-fs": {
      "version": "4.2.11",
      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.11.tgz",
      "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==",
      "license": "ISC"
    },
    "node_modules/has-flag": {
      "version": "4.0.0",
      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
      "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
      "license": "MIT",
      "engines": {
        "node": ">=8"
      }
    },
    "node_modules/is-number": {
      "version": "7.0.0",
      "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
      "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
      "license": "MIT",
      "engines": {
        "node": ">=0.12.0"
      }
    },
    "node_modules/jest-haste-map": {
      "version": "29.7.0",
      "resolved": "https://registry.npmjs.org/jest-haste-map/-/jest-haste-map-29.7.0.tgz",
      "integrity": "sha512-fP8u2pyfqx0K1rGn1R9pyE0/KTn+G7PxktWidOBTqFPLYX0b9ksaMFkhK5vrS3DVun09pckLdlx90QthlW7AmA==",
      "license": "MIT",
      "dependencies": {
        "@jest/types": "^29.6.3",
        "@types/graceful-fs": "^4.1.3",
        "@types/node": "*",
        "anymatch": "^3.0.3",
        "fb-watchman": "^2.0.0",
        "graceful-fs": "^4.2.9",
        "jest-regex-util": "^29.6.3",
        "jest-util": "^29.7.0",
        "jest-worker": "^29.7.0",
        "micromatch": "^4.0.4",
        "walker": "^1.0.8"
      },
      "engines": {
        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
      },
      "optionalDependencies": {
        "fsevents": "^2.3.2"
      }
    },
    "node_modules/jest-regex-util": {
      "version": "29.6.3",
      "resolved": "https://registry.npmjs.org/jest-regex-util/-/jest-regex-util-29.6.3.tgz",
      "integrity": "sha512-KJJBsRCyyLNWCNBOvZyRDnAIfUiRJ8v+hOBQYGn8gDyF3UegwiP4gwRR3/SDa42g1YbVycTidUF3rKjyLFDWbg==",
      "license": "MIT",
      "engines": {
        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
      }
    },
    "node_modules/jest-util": {
      "version": "29.7.0",
      "resolved": "https://registry.npmjs.org/jest-util/-/jest-util-29.7.0.tgz",
      "integrity": "sha512-z6EbKajIpqGKU56y5KBUgy1dt1ihhQJgWzUlZHArA/+X2ad7Cb5iF+AK1EWVL/Bo7Rz9uurpqw6SiBCefUbCGA==",
      "license": "MIT",
      "dependencies": {
        "@jest/types": "^29.6.3",
        "@types/node": "*",
        "chalk": "^4.0.0",
        "ci-info": "^3.2.0",
        "graceful-fs": "^4.2.9",
        "picomatch": "^2.2.3"
      },
      "engines": {
        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
      }
    },
    "node_modules/jest-worker": {
      "version": "29.7.0",
      "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-29.7.0.tgz",
      "integrity": "sha512-eIz2msL/EzL9UFTFFx7jBTkeZfku0yUAyZZZmJ93H2TYEiroIx2PQjEXcwYtYl8zXCxb+PAmA2hLIt/6ZEkPHw==",
      "license": "MIT",
      "dependencies": {
        "@types/node": "*",
        "jest-util": "^29.7.0",
        "merge-stream": "^2.0.0",
        "supports-color": "^8.0.0"
      },
      "engines": {
        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
      }
    },
    "node_modules/jest-worker/node_modules/supports-color": {
      "version": "8.1.1",
      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz",
      "integrity": "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q==",
      "license": "MIT",
      "dependencies": {
        "has-flag": "^4.0.0"
      },
      "engines": {
        "node": ">=10"
      },
      "funding": {
        "url": "https://github.com/chalk/supports-color?sponsor=1"
      }
    },
    "node_modules/makeerror": {
      "version": "1.0.12",
      "resolved": "https://registry.npmjs.org/makeerror/-/makeerror-1.0.12.tgz",
      "integrity": "sha512-JmqCvUhmt43madlpFzG4BQzG2Z3m6tvQDNKdClZnO3VbIudJYmxsT0FNJMeiB2+JTSlTQTSbU8QdesVmwJcmLg==",
      "license": "BSD-3-Clause",
      "dependencies": {
        "tmpl": "1.0.5"
      }
    },
    "node_modules/merge-stream": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
      "integrity": "sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==",
      "license": "MIT"
    },
    "node_modules/micromatch": {
      "version": "4.0.8",
      "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.8.tgz",
      "integrity": "sha512-PXwfBhYu0hBCPw8Dn0E+WDYb7af3dSLVWKi3HGv84IdF4TyFoC0ysxFd0Goxw7nSv4T/PzEJQxsYsEiFCKo2BA==",
      "license": "MIT",
      "dependencies": {
        "braces": "^3.0.3",
        "picomatch": "^2.3.1"
      },
      "engines": {
        "node": ">=8.6"
      }
    },
    "node_modules/node-int64": {
      "version": "0.4.0",
      "resolved": "https://registry.npmjs.org/node-int64/-/node-int64-0.4.0.tgz",
      "integrity": "sha512-O5lz91xSOeoXP6DulyHfllpq+Eg00MWitZIbtPfoSEvqIHdl5gfcY6hYzDWnj0qD5tz52PI08u9qUvSVeUBeHw==",
      "license": "MIT"
    },
    "node_modules/normalize-path": {
      "version": "3.0.0",
      "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
      "license": "MIT",
      "engines": {
        "node": ">=0.10.0"
      }
    },
    "node_modules/picomatch": {
      "version": "2.3.2",
      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.2.tgz",
      "integrity": "sha512-V7+vQEJ06Z+c5tSye8S+nHUfI51xoXIXjHQ99cQtKUkQqqO1kO/KCJUfZXuB47h/YBlDhah2H3hdUGXn8ie0oA==",
      "license": "MIT",
      "engines": {
        "node": ">=8.6"
      },
      "funding": {
        "url": "https://github.com/sponsors/jonschlinkert"
      }
    },
    "node_modules/supports-color": {
      "version": "7.2.0",
      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
      "license": "MIT",
      "dependencies": {
        "has-flag": "^4.0.0"
      },
      "engines": {
        "node": ">=8"
      }
    },
    "node_modules/tmpl": {
      "version": "1.0.5",
      "resolved": "https://registry.npmjs.org/tmpl/-/tmpl-1.0.5.tgz",
      "integrity": "sha512-3f0uOEAQwIqGuWW2MVzYg8fV/QNnc/IpuJNG837rLuczAaLVHslWHZQj4IGiEl5Hs3kkbhwL9Ab7Hrsmuj+Smw==",
      "license": "BSD-3-Clause"
    },
    "node_modules/to-regex-range": {
      "version": "5.0.1",
      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
      "license": "MIT",
      "dependencies": {
        "is-number": "^7.0.0"
      },
      "engines": {
        "node": ">=8.0"
      }
    },
    "node_modules/undici-types": {
      "version": "8.3.0",
      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
      "license": "MIT"
    },
    "node_modules/walker": {
      "version": "1.0.8",
      "resolved": "https://registry.npmjs.org/walker/-/walker-1.0.8.tgz",
      "integrity": "sha512-ts/8E8l5b7kY0vlWLewOkDXMmPdLcVV4GmOQLyxuSswIJsweeFZtAsMF7k1Nszz+TYBQrlYRmzOnr398y1JemQ==",
      "license": "Apache-2.0",
      "dependencies": {
        "makeerror": "1.0.12"
      }
    }
  }
}
package.json
{
  "name": "sample-jest-haste-map-crawl",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of jest-haste-map crawling and indexing",
  "main": "src/index.js",
  "license": "MIT-0",
  "dependencies": {
    "jest-haste-map": "29.7.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "crawl files and build haste map with JestHasteMap",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-haste-map@29.7.0"
  ],
  "symbols": [
    "HasteMap.build",
    "HasteMap.create"
  ]
}
src/index.js
const HasteMapPkg = require('jest-haste-map');

const HasteMap = HasteMapPkg.default || HasteMapPkg;

/**
 * Creates and initializes a HasteMap instance for file crawling and indexing.
 * @param {object} options
 * @param {string} options.rootDir - Root directory of the project.
 * @param {string[]} [options.roots] - Directories to crawl.
 * @param {string[]} [options.extensions] - File extensions to index.
 * @param {number} [options.maxWorkers] - Number of worker threads.
 * @param {string} [options.name] - Cache identifier name.
 * @returns {Promise<object>} HasteMap instance.
 */
async function createHasteMap(options) {
  const {
    rootDir,
    roots = [rootDir],
    extensions = ['js', 'json', 'ts'],
    maxWorkers = 1,
    name = 'haste-crawler'
  } = options;

  return HasteMap.create({
    extensions,
    maxWorkers,
    name,
    platforms: [],
    rootDir,
    roots,
    useWatchman: false,
    watch: false
  });
}

/**
 * Crawls the directory structure and builds the Haste file system and module map.
 * @param {object} hasteMap - HasteMap instance.
 * @returns {Promise<{hasteFS: object, moduleMap: object}>}
 */
async function buildHasteMap(hasteMap) {
  return hasteMap.build();
}

module.exports = {
  HasteMap,
  createHasteMap,
  buildHasteMap
};
test/contract.mjs
import { strict as assert } from 'node:assert';
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const { HasteMap, createHasteMap, buildHasteMap } = require('../src/index.js');

// 1. Export verification
assert.strictEqual(typeof HasteMap.create, 'function', 'HasteMap.create must be a function');
assert.strictEqual(typeof createHasteMap, 'function', 'createHasteMap must be a function');
assert.strictEqual(typeof buildHasteMap, 'function', 'buildHasteMap must be a function');

// 2. Create isolated temporary workspace for indexing
const tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'haste-sample-'));

try {
  const subDir = path.join(tempDir, 'src');
  fs.mkdirSync(subDir, { recursive: true });

  const fileAlpha = path.join(subDir, 'alpha.js');
  const fileBeta = path.join(subDir, 'beta.ts');
  const fileConfig = path.join(tempDir, 'config.json');

  fs.writeFileSync(fileAlpha, 'module.exports = { name: "alpha" };\n');
  fs.writeFileSync(fileBeta, 'export const beta = 100;\n');
  fs.writeFileSync(fileConfig, '{"enabled": true}\n');

  // 3. Create HasteMap instance
  const hasteMap = await createHasteMap({
    rootDir: tempDir,
    roots: [tempDir],
    extensions: ['js', 'ts', 'json'],
    maxWorkers: 1,
    name: 'contract-test-map'
  });

  assert.strictEqual(typeof hasteMap.build, 'function', 'hasteMap instance must have build method');

  // 4. Build file map and module map
  const { hasteFS, moduleMap } = await buildHasteMap(hasteMap);

  assert.ok(hasteFS, 'hasteFS must be defined');
  assert.ok(moduleMap, 'moduleMap must be defined');

  // 5. Query indexed files
  const allFiles = hasteFS.getAllFiles();
  assert.strictEqual(allFiles.length, 3, 'hasteFS must index all 3 created files');

  assert.strictEqual(hasteFS.exists(fileAlpha), true, 'fileAlpha should exist in hasteFS');
  assert.strictEqual(hasteFS.exists(fileBeta), true, 'fileBeta should exist in hasteFS');
  assert.strictEqual(hasteFS.exists(fileConfig), true, 'fileConfig should exist in hasteFS');

  const nonExistent = path.join(tempDir, 'gamma.js');
  assert.strictEqual(hasteFS.exists(nonExistent), false, 'nonExistent file should not exist in hasteFS');

  // 6. Match files by pattern
  const tsFiles = hasteFS.matchFiles(/\.ts$/);
  assert.strictEqual(tsFiles.length, 1, 'should find exactly 1 TypeScript file');
  assert.strictEqual(tsFiles[0], fileBeta, 'matched file must match fileBeta');

  const jsonFiles = hasteFS.matchFiles(/\.json$/);
  assert.strictEqual(jsonFiles.length, 1, 'should find exactly 1 JSON file');
  assert.strictEqual(jsonFiles[0], fileConfig, 'matched file must match fileConfig');

  console.log('CONTRACT PASS: HasteMap successfully created, crawled files, and built hasteFS');
} finally {
  fs.rmSync(tempDir, { recursive: true, force: true });
}

Origin Seeder

anonymous