Jeff-Lewis

<#
 
.SYNOPSIS
This is a Powershell script to dump console buffer as html to file.
 
.DESCRIPTION
This Powershell script will iterate over the current console buffer and
output it as html preserving colors.

.PARAMETER FilePath

Jeff-Lewis

SELECT   
	o.name as 'TableName' ,
	SUM (  
	CASE  
		WHEN (index_id < 2) THEN row_count  
		ELSE 0  
	END  
	) as 'RowCount',
	
	LTRIM (STR (SUM (reserved_page_count)/1024 * 8, 15, 0) + ' MB') as'Reserved MB',

Jeff-Lewis

/* @flow */
declare module 'dynamoose' {
  declare type Throughput = number | ({
    read: number;
  } | {
    write: number;
  });

  declare type ThroughputConfig = {
    throuput: Throughput;

Jeff-Lewis

// Custom made dynamoose declaration file.

declare module "dynamoose" {
	export function local(url: string): void;
	export function model<DataSchema, KeySchema, ModelSchema extends Model<DataSchema>>(
    modelName: string,
    schema: Schema,
    options?: ModelOption
  ): ModelConstructor<DataSchema, KeySchema, ModelSchema>;
	export function setDefaults(options: ModelOption): void;

Jeff-Lewis

Update: please note that I have since switched to using a set of bash scripts instead of poluting the Git repository with git svn.

Using Git and GitHub with Subversion (SVN) Mirroring for WordPress Plugin Development

Author: Kaspars Dambis
kaspars.net / @konstruktors

Jeff-Lewis

// context
var mongoose = require('mongoose');
mongoose.connect('mongodb://...');

/**
 * Generates Mongoose uniqueness validator
 * 
 * @param string modelName
 * @param string field
 * @param boolean caseSensitive

Jeff-Lewis

domain Module Postmortem

Usability Issues

Implicit Behavior

It's possible for a developer to create a new domain and then simply run domain.enter(). Which then acts as a catch-all for any exception in the future that couldn't be observed by the thrower. Allowing a module author to intercept the exceptions of unrelated code in a different module. Preventing

Jeff-Lewis

@mafintosh asks: "Does anyone have a good code example of when to use setImmediate instead of nextTick?"

https://twitter.com/mafintosh/status/624590818125352960

The answer is "generally anywhere outside of core".

process.nextTick is barely asynchronous. Flow-wise it is asynchronous, but it will trigger before any other asynchronous events can (timers, io, etc.) and thus can starve the event loop.

In this script I show a starved event loop where I just synchronously block, use nextTick and setImmediate

Jeff-Lewis

"use strict";
var clsModule = require("continuation-local-storage");
const superagent = require("superagent");
const assert = require("assert");

var http = require("http");

var keepAlive = process.env.KEEP_ALIVE !== "0";
var httpAgent = new http.Agent({
  keepAlive: keepAlive,

Jeff-Lewis

'use strict';
const asyncWrap = process.binding('async_wrap');
const fs = require('fs');

//
// Track
//
// 1. Setup a global variable to track the context of the async_hook_init_function
let callbackContext = 'root';
process.nextTick(function () {