nareix

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

兼容性测试

https://www.browserstack.com/

浏览器内核/渲染引擎/排版引擎/解释引擎/Rendering Engine

渲染引擎主要是负责HTML, CSS以及其他一些东西的渲染.
有时, 浏览器内核, 除了渲染引擎, 也悄悄包含了javascript引擎. 如: WebKit, 它由渲染引擎WebCore和Javascript引擎JSCore组成.
IE: Trident
Safari: WebKit(KHTML分支) -> WebKit2
Chrome/Chromium: Chromium引擎(WebKit分支) -> Blink引擎(基于WebKit2)
Opera: Elektra -> Presto -> Chromium引擎 -> Blink引擎

	var mongoose = require('mongoose');
	mongoose.connect('mongo://localhost/test');
	var conn = mongoose.connection;

	var users = conn.collection('users');
	var channels = conn.collection('channels');
	var articles = conn.collection('articles');

	var insertUsers = Q.nfbind(users.insert.bind(users));
	var insertChannels = Q.nfbind(channels.insert.bind(channels));

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	all:
	bison -d newick.y
	flex newick.l
	gcc -Wall -O3 newick.tab.c lex.yy.c
	echo "(A,B,(C,D)E)F;" \| ./a.out

	/*
	* linux 2.6.37-3.x.x x86_64, ~100 LOC
	* gcc-4.6 -O2 semtex.c && ./a.out
	* 2010 [email protected], salut!
	*
	* update may 2013:
	* seems like centos 2.6.32 backported the perf bug, lol.
	* jewgold to 115T6jzGrVMgQ2Nt1Wnua7Ch1EuL9WXT2g if you insist.
	*/

	package com.solarfighter.activities;

	import java.io.IOException;
	import java.net.InetAddress;

	import javax.jmdns.JmDNS;
	import javax.jmdns.ServiceEvent;
	import javax.jmdns.ServiceListener;

	import android.content.Context;

	import os
	import sys
	import re
	import hashlib
	import csv
	import time
	import locale
	import getopt

	#include <pebble.h>
	#include <time.h>

	static const int FACE_DISC_RADIUS = 70;
	static const int CENTER_DISC_RADIUS = 20;
	static const int HOUR_DISC_RADIUS = 10;
	static const int MINUTE_DISC_RADIUS = 5;

	static const int HOUR_ROT_RADIUS = 40;
	static const int MINUTE_ROT_RADIUS = 60;

	package main

	import (
	"fmt"
	"syscall"
	)

	type DiskStatus struct {
	All uint64 `json:"all"`
	Used uint64 `json:"used"`