John Colvin John-Colvin

Stuff I wish I'd known sooner about service workers

I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.

I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.

Use Canary for development instead of Chrome stable

~~Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.~~

Module imports

When declaring imports follow the following convention:

Specify the module name module fancymodule.functions;
Import all std modules import std.stdio;
Import all external library modules import dsfml.system;
Import all modules part of your project import fancymodule.actions;

Have a module named all that only publicly imports all of your library's modules:

	/**
	* Explaination comments taken from:
	* http://wiki.openstreetmap.org/wiki/PBF_Format#Design
	*
	* This gives a very basic parsing of osm.pbf files. The purpose was several
	* fold.
	*
	* - Read PBF files
	* - Learn the file layout
	* - Verify the bytes match

	#define _CRT_SECURE_NO_DEPRECATE

	#include <stdio.h>
	#include <string.h>
	#include <Windows.h>

	// This allocates a "magic ring buffer" that is mapped twice, with the two
	// copies being contiguous in (virtual) memory. The advantage of this is
	// that this allows any function that expects data to be contiguous in
	// memory to read from (or write to) such a buffer. It also means that