Last active
February 25, 2016 20:45
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Save voxpelli/84a2ffec90b21a969be2 to your computer and use it in GitHub Desktop.
See https://www.npmjs.com/package/installed-check instead
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var validateInstalledDependencies = function () { | |
var readJson = require('read-package-json'); | |
var readInstalled = require('read-installed'); | |
var semver = require('semver'); | |
var packagePromise = new Promise(function (resolve, reject) { | |
readJson('package.json', function (err, data) { | |
if (err) { return reject(err); } | |
resolve(data); | |
}); | |
}); | |
var installedPromise = new Promise(function (resolve, reject) { | |
readInstalled('.', { dev: true, depth: 1 }, function (err, data) { | |
if (err) { return reject(err); } | |
resolve(data); | |
}); | |
}); | |
return Promise.all([ | |
packagePromise, | |
installedPromise | |
]) | |
.then(result => { | |
var requiredDependencies = Object.assign({}, result[0].dependencies, result[0].devDependencies); | |
var installedDependencies = result[1]; | |
var errors = []; | |
Object.keys(requiredDependencies).forEach(dependency => { | |
var version = (installedDependencies.dependencies[dependency] || installedDependencies.devDependencies[dependency] || {}).version; | |
if (!version) { | |
errors.push(dependency + ': Missing dependency'); | |
} else if (!semver.satisfies(version, requiredDependencies[dependency])) { | |
errors.push(dependency + ': Invalid version, expected a ' + requiredDependencies[dependency]); | |
} | |
}); | |
if (errors) { | |
throw new Error('Dependency errors: \n\n' + errors.join('\n') + '\n'); | |
} | |
}); | |
}; |
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