kvz

These are the steps I took to change a modest project from CoffeeScript to ES6.

My ~2000LoC project took me around 6 hours to port, but I sunk 3 hours into a stupid mistake, and 2 into figuring out these steps, so with these steps & warnings at your disposal already, you should be able to do bigger projects in considerably less time.

Automatic tools only take you so far, there will be some manual fixing. Sometimes the generated code clearly doesn't look like a human wrote it, and sometimes there are bugs.

In this last case, when porting software trips over a particular bit of CoffeeScript, comment this bit out, and try transpiling the file again. If this is successfull, you'll see the commented CoffeeScript inside the JS, and you can port that bit yourself.

Okay let's dive right in!

kvz

# Licensed under MIT.
# Copyright (2016) by Kevin van Zonneveld https://twitter.com/kvz
#	
# This Makefile offers convience shortcuts into any Node.js project that utilizes npm scripts.
# It functions as a wrapper around the actual listed in `package.json`
# So instead of typing:
#
#  $ npm script build:assets
#
# you could just as well type:

kvz

 "meta": {
        "width": 500,
        "height": 753,
        "date_recorded": null,
        "date_file_created": "2015/10/14 16:15:48",
        "date_file_modified": "2015/11/18 13:28:12 GMT",
        "title": "Terry%20Carkner",
        "description": "Terry Carkner",
        "location": null,
        "aspect_ratio": "0.664",

kvz

A truly great & short book on CoffeeScript http://arcturo.github.io/library/coffeescript/index.html

I would propose these exceptions to https://github.com/polarmobile/coffeescript-style-guide:

• we can use a max line length of 100
• we can also use @todo(user) for annotation
• we can use alignment for readability
• we use double quotes everywhere
• we try to avoid if foo at the end of lines
• we use a final return x vs just plain x

kvz

#!/usr/bin/env bash
# Git Timetracker. Copyright Kevin van Zonneveld (kvz.io)
# License under MIT
#
# This file
#
#  - can be run inside a git repository to get a list on what hours work took place (for billing)
#  - takes 1 argument: since. It defaults to "2 months"
#
# Usage:

kvz

{  
  include_template: "a",  // <-- full template, used as a base 
  is_video: {  
    use: ":original",
    robot: "/file/filter",
    accepts: [  
      [  
        "${file.mime}",
        "regex",
        "video"

kvz

#!/usr/bin/env bash
# Transloadit API2. Copyright (c) 2015, Transloadit Ltd.
#
# This file
#  - Reproduces the issue where resizing a certain jpg breaks
#    the image on OSX & iOS, wheras the original dispays fine.
#
# Reported first by Richard Taylor in http://support.transloadit.com/discussions/questions/96479-image-conversion-problem
#
# Typically called as `./debug.sh [target.jpg]`

kvz

cd /tmp
wget -nc https://www.dropbox.com/s/04u5xws6fkvbkgb/Shred_Those_Pounds.mp4?dl=1 -O Shred_Those_Pounds.mp4

echo ""
echo ""
echo "--> Failure with '-sn -dn'"
ffmpeg-v2.2.3 \
  -i ./Shred_Those_Pounds.mp4 \
  -codec:a libfdk_aac \

kvz

"steps": {
  "ipad": {
    "robot" : "/video/encode",
    "use"   : [ ":original" ],
    "preset": "ipad"
  },
  "webm": {
    "robot" : "/video/encode",
    "use"   : [ ":original" ],
    "preset": "webm"

kvz

# I statically compiled Imagemagick. 
# Converting works well so far. 
# But when I run `identify -list delegate` it shows my delegates, but then exits with "Aborted (core dumped)". 
# What could be wrong here?
 
$ strace -f identify -list delegate
execve("./target/bin/identify", ["identify", "-list", "delegate"], [/* 21 vars */]) = 0
brk(0)                                  = 0x34e2000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8452cd8000