todgru

var Aws = require('aws-sdk');
var sinon = require('sinon');

// Only works for 'createBucket', 'update' and a few others since most API methods are generated dynamically
// upon instantiation. Very counterintuitive, thanks Amazon!
var createBucket = sinon.stub(Aws.S3.prototype, 'createBucket');
createBucket.yields(null, 'Me create bucket');

// For other methods, we can 'assign' the stubs to the proto, already defined function won't be overridden
var listBuckets = Aws.S3.prototype.listBuckets = sinon.stub();

todgru

        this.models.myItem.findAll({
          where: { projectId: 1 },
          include: [
            {
              model: this.models.myItemThing,
              // Sequelize term indicates "use the through table where `type===foo`"
              through: {
                where: { type: "foo" },
              },

todgru

Sequelize Error: Invalid value [object Object]

Error: Invalid value [object Object]

This happens when you think you are passing an integer or string, and you are actually passing in an object!

Somethign like this will produce the same error.

todgru

"use strict";

module.exports = {
  up: function(queryInterface, Sequelize) {
    //
    // queryInterface methods DO return promises. Either of the following with work
    //
    // return queryInterface.addColumn(...)
    // .then(() => queryInterface.doSomething(...)) 
    // etc.

todgru

// get rid of the yellow js file icon
// yellow means modified with the gh plugins
// change to grayish, not yellow
//
// add this to atom's style.less file:
.icon[data-name$=".js"]:before {
  font-family: Devicons;
  color: #828997; 
  content: "\E64E";
}

todgru

// foo-module.js
module.exports.bar = () => {
  return "hello bar";
};

// my-file.test
const foo = require("./foo-module");
module.exports.myBar = () => {
  return foo.bar();
};

todgru

// I was testing some functionality that relied on `moment()`. 
// I wanted to fake the value of the time Moment uses so I could test return values. 
// Here is the method I used. Reference: https://stackoverflow.com/a/31591297/1478950

const test = require("ava");
const sinon = require("sinon");
const moment = require("moment");

let sandbox;

todgru

diff current package files in local directory to the latest published version

NPM package for publish-diff: https://github.com/FormidableLabs/publish-diff

publish-diff -n . -o @private/package-name@latest

todgru

// Sometimes I have a promise chain that returns out of a promise before 
// the the execution is actually completed. Maybe i'm not returning correctly?
// Anyway, might be a common problem for a newb, like me.
// here is a way to add a delay in the promise chain to wait for the previous
// promise to complete. This is NOT best practice, but maybe it can be used as
// a troubleshooting tool.
//
...
  .then(() => {...}) 
  .then(() => {

todgru

TypeError: Cannot read property 'getTableName' of undefined or foo.bar is not a function

I've had this error on numerous occasions. Here are a few things to look for:

• Check that the table name that is included in the query is spelled correctly, check that is it defined correctly (for sequelize).
• If you are running tests and using Mockery, check that Mockery is setup correctly. Try removing Mockery and running the test.
• Check that if you are trying to stub with Sinon, that Mockery isn't ALSO trying to stub out the same object.
• Example of stubbing with Sinon instead of Mockery: https://gist.github.com/todgru/e439373af2488eefc30ae8bd1fe3864a