{"id":93,"hash":"ff940267d6772c9d6d1a01b43de69591f0a6998c7e05280b714e3c4fb3c803ae","pattern":"Error "npm WARN package.json: No repository field"","full_message":"I installed Express.js with the following command:\n\nsudo npm install -g express\n\nI get the following warnings:\n\nnpm WARN package.json range-parser@0.0.4 No repository field.\nnpm WARN package.json fresh@0.1.0 No repository field.\nnpm WARN package.json methods@0.0.1 No repository field.\nnpm WARN package.json methods@0.0.1 No readme data.\nnpm WARN package.json cookie-signature@1.0.1 No repository field.\nnpm WARN package.json send@0.1.0 No repository field.\nnpm WARN package.json pause@0.0.1 No repository field.\nnpm WARN package.json bytes@0.2.0 No repository field.\nnpm WARN package.json github-url-from-git@1.1.1 No repository field.\nnpm WARN package.json assert-plus@0.1.2 No repository field.\nnpm WARN package.json ctype@0.5.2 No repository field.\n\nWhy do I have the above warnings? Should I be worried?","ecosystem":"npm","package_name":"node.js","package_version":null,"solution":"It's just a check as of NPM v1.2.20, they report this as a warning.\n\nHowever, don't worry, there are sooooooo many packages which still don't have the repository field in their package.json.  The field is used for informational purposes.\n\nIn the case you're a package author, put the repository in your package.json, like this:\n\n\"repository\": {\n  \"type\": \"git\",\n  \"url\": \"git://github.com/username/repository.git\"\n}\n\nRead more about the repository field, and see the logged bug for further details.\n\nAdditionally, as originally reported by @dan_nl, you can set private key in your package.json.\n\nThis will not only stop you from accidentally running npm publish in your app, but will also stop NPM from printing warnings regarding package.json problems.\n\n{\n  \"name\": \"my-super-amazing-app\",\n  \"version\": \"1.0.0\",\n  \"private\": true\n}","confidence":0.95,"source":"stackoverflow","source_url":"https://stackoverflow.com/questions/16827858/error-npm-warn-package-json-no-repository-field","votes":922,"created_at":"2026-04-19T04:41:18.784892+00:00","updated_at":"2026-04-19T04:51:14.641076+00:00"}