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npm prepublish check for package@version existence
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| { | |
| "scripts": { | |
| "prepublish" : "[[ $(npm view $npm_package_name@$npm_package_version --silent) ]] && echo \"error: $npm_package_name@$npm_package_version exists already!\" && exit 1 || echo \"successful check: $npm_package_name@$npm_package_version does not exist already\"" | |
| } | |
| } |
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