app-service

app-service

Compose transforming, validation and actual service methods in a strict pipeline

Installation

npm install app-service

Usage

Define transform, validate function and actual method and wire up it through app-service

var build = require('app-service');
 
function transformCreateUser (params) {
    console.log('transform', params);
 
    params.email = params.email.toLowerCase();
    return params;
}
 
function validateCreateUser (params) {
    console.log('validate', params):
 
    if (params.email.length > 100) {
        throw new Error('Email is toooo long');
    }
}
 
function createUser (params) {
    console.log(params);
    return 'got it!';
}
 
var service = build({
    methods: { createUser: createUser },
    validation: { createUser: validateCreateUser },
    transforms: { createUser: transformCreateUser }
});
 
service.createUser({ email: '[e-mail]' }).then(function (result) {
    console.log(result);
});

outputs:

transform { email: '[e-mail]' }
validate { email: '[e-mail]' }
{ email: '[e-mail]' }
got it!

LICENSE

MIT