decoders VS node-validator

I’ve used Decoders in the past to add type safety to API responses: https://decoders.cc

Decoders is my go-to data validation library for JavaScript and NodeJS. It's lightweight , has good TypeScript support and is extendable. The parsed item is validated by this library.

Looks very similar to https://github.com/nvie/decoders, which I've been using lately and says to be inspired of Elm too. I'll take a more in depth look at your implementation, but looks like a great work!

https://github.com/nvie/decoders seems very similar to https://github.com/colinhacks/zod, though I prefer zod as it has better support for type inference, error handling, and validation (e.g. min/max, regex, etc.) IMO.

// Clean up when 500 users reached if(users.length > 500) { users = users.slice(0, 2); } var user = { id: _.max(users, function(user) { return user.id; }).id + 1, username: username, password: password, role: role }; users.push(user); callback(null, user); }, findOrCreateOauthUser: function(provider, providerId) { var user = module.exports.findByProviderId(provider, providerId); if(!user) { user = { id: _.max(users, function(user) { return user.id; }).id + 1, username: provider + '_user', // Should keep Oauth users anonymous on demo site role: userRoles.user, provider: provider }; user[provider] = providerId; users.push(user); } return user; }, findAll: function() { return _.map(users, function(user) { return _.clone(user); }); }, findById: function(id) { return _.clone(_.find(users, function(user) { return user.id === id })); }, findByUsername: function(username) { return _.clone(_.find(users, function(user) { return user.username === username; })); }, findByProviderId: function(provider, id) { return _.find(users, function(user) { return user[provider] === id; }); }, validate: function(user) { check(user.username, 'Username must be 1-20 characters long').len(1, 20); check(user.password, 'Password must be 5-60 characters long').len(5, 60); check(user.username, 'Invalid username').not(/((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)/); // TODO: Seems node-validator's isIn function doesn't handle Number arrays very well... // Till this is rectified Number arrays must be converted to string arrays // https://github.com/chriso/node-validator/issues/185 var stringArr = _.map(_.values(userRoles), function(val) { return val.toString() }); check(user.role, 'Invalid user role given').isIn(stringArr); }, localStrategy: new LocalStrategy( function(username, password, done) { var user = module.exports.findByUsername(username); if(!user) { done(null, false, { message: 'Incorrect username.' }); } else if(user.password != password) { done(null, false, { message: 'Incorrect username.' }); } else { return done(null, user); } } ), twitterStrategy: function() { if(!process.env.TWITTER_CONSUMER_KEY) throw new Error('A Twitter Consumer Key is required if you want to enable login via Twitter.'); if(!process.env.TWITTER_CONSUMER_SECRET) throw new Error('A Twitter Consumer Secret is required if you want to enable login via Twitter.'); return new TwitterStrategy({ consumerKey: process.env.TWITTER_CONSUMER_KEY, consumerSecret: process.env.TWITTER_CONSUMER_SECRET, callbackURL: process.env.TWITTER_CALLBACK_URL || 'http://localhost:8000/auth/twitter/callback' }, function(token, tokenSecret, profile, done) { var user = module.exports.findOrCreateOauthUser(profile.provider, profile.id); done(null, user); }); }, facebookStrategy: function() { if(!process.env.FACEBOOK_APP_ID) throw new Error('A Facebook App ID is required if you want to enable login via Facebook.'); if(!process.env.FACEBOOK_APP_SECRET) throw new Error('A Facebook App Secret is required if you want to enable login via Facebook.'); return new FacebookStrategy({ clientID: process.env.FACEBOOK_APP_ID, clientSecret: process.env.FACEBOOK_APP_SECRET, callbackURL: process.env.FACEBOOK_CALLBACK_URL || "http://localhost:8000/auth/facebook/callback" }, function(accessToken, refreshToken, profile, done) { var user = module.exports.findOrCreateOauthUser(profile.provider, profile.id); done(null, user); }); }, googleStrategy: function() { return new GoogleStrategy({ returnURL: process.env.GOOGLE_RETURN_URL || "http://localhost:8000/auth/google/return", realm: process.env.GOOGLE_REALM || "http://localhost:8000/" }, function(identifier, profile, done) { var user = module.exports.findOrCreateOauthUser('google', identifier); done(null, user); }); }, linkedInStrategy: function() { if(!process.env.LINKED_IN_KEY) throw new Error('A LinkedIn App Key is required if you want to enable login via LinkedIn.'); if(!process.env.LINKED_IN_SECRET) throw new Error('A LinkedIn App Secret is required if you want to enable login via LinkedIn.'); return new LinkedInStrategy({ consumerKey: process.env.LINKED_IN_KEY, consumerSecret: process.env.LINKED_IN_SECRET, callbackURL: process.env.LINKED_IN_CALLBACK_URL || "http://localhost:8000/auth/linkedin/callback" }, function(token, tokenSecret, profile, done) { var user = module.exports.findOrCreateOauthUser('linkedin', profile.id); done(null,user); } ); }, serializeUser: function(user, done) { done(null, user.id); }, deserializeUser: function(id, done) { var user = module.exports.findById(id); if(user) { done(null, user); } else { done(null, false); } }