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JavaScript Express Basics Getting Started with Express Review Installing Express

Posted by David Ryan
David Ryan
Courses Plus Student 14,981 Points

After npm init for express

After installing during the first video I now have a package-lock.json? Any meaning? 

{
  "name": "flashcards",
  "version": "1.0.0",
  "lockfileVersion": 1,
  "requires": true,
  "dependencies": {
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      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
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      "requires": {
        "mime-types": "~2.1.18",
        "negotiator": "0.6.1"
      }
    },
    "array-flatten": {
      "version": "1.1.1",
      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
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      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.2.tgz",
      "integrity": "sha1-h2eKGdhLR9hZuDGZvVm84iKxBFQ=",
      "requires": {
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        "content-type": "~1.0.4",
        "debug": "2.6.9",
        "depd": "~1.1.1",
        "http-errors": "~1.6.2",
        "iconv-lite": "0.4.19",
        "on-finished": "~2.3.0",
        "qs": "6.5.1",
        "raw-body": "2.3.2",
        "type-is": "~1.6.15"
      }
    },
    "bytes": {
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      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
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      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
    },
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      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
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        "cookie": "0.3.1",
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        "debug": "2.6.9",
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        "on-finished": "~2.3.0",
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        "proxy-addr": "~2.0.3",
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        "range-parser": "~1.2.0",
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        "send": "0.16.2",
        "serve-static": "1.13.2",
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        "type-is": "~1.6.16",
        "utils-merge": "1.0.1",
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      "requires": {
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      "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
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      "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
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      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.19.tgz",
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    }
  }
}

1 Answer

Tim Knight
Tim Knight
28,888 Points
Tim Knight
Tim Knight
28,888 Points

Hi David,

Yes the package-lock.json file works with npm to lock in the current versions of the npm packages you have installed that are listed within your package.json file for your project If you're version controlling your project, you would include this file so all of the members on your team are using the exact same versions of the associated libraries.

David Ryan
David Ryan
Courses Plus Student 14,981 Points

Okay so it's normal! Awesome... Never seen a package-lock file name.

Tim Knight
Tim Knight
28,888 Points
Tim Knight
Tim Knight
28,888 Points

Yup, completely normal!