Skip to content

Instantly share code, notes, and snippets.

Working on Mithril type stuff

Barney Carroll barneycarroll

Working on Mithril type stuff
View GitHub Profile
JAForbes /
Last active Aug 4, 2018
A simple Javascript

Warning this is purely a thought experiment and will probably go nowhere. The language semantics will likely be incongruent and non-rigourous. Proceed at your own risk.


Javascript always wanted to be a functional language. But for historical, political and perhaps even sensible reasons, JS's original mission was never truly fulfilled.

But what if, we take JS and start removing things. We can remove mutation, remove variables, remove classes, remove variadic signatures, remove default arguments and on and on.

What if we go back to ES1 and re-evaluate a future unperturbed by corporate circumstance.

gilbert / example-use.js
Last active Aug 18, 2016
Back-button & forward-button compatible Redux-like state management for Mithril.js
View example-use.js
var BlogComments = {}
BlogComments.controller = function (options) {
App.state.fetch('blogComments', `/api/blog-post/${ options.blog_id }/comments`)
BlogComments.view = function (ctrl, options) {
var comments = App.state.blogComments
return m('.blog-comments-component', [
gilbert / widget.js
Created Mar 25, 2015
Mithril + JSS
View widget.js
Widget = {
controller: function () {
this.css = Widget.stylesheet().classes
view: function (ctrl) {
return m('.widget', [
m('h3', { class: ctrl.css.head }),
m('div', { class: ctrl.css.body })
barneycarroll / modulator.js
Last active Aug 2, 2019
Modulator: a light-touch API (with heavy internals) for auto-instantiating Mithril modules. Makes Mithril lifecycle management more user-friendly.
View modulator.js
var mod = ( function initModulator(){
if( !Map ){
// A naive shim for maps functionality
var Map = shim;
var WeakMap = shim;
// Registry of instantiation contexts
var contexts = new WeakMap();
// All automated counts
barneycarroll / multi.js
Last active Mar 23, 2016
Execute multiple functions where one is expected. Useful for event handling.
View multi.js
function multi(){
var handlers = arguments, function( x ){
return x instanceof Function
} )
return function handle(){
for( var i = 0; i < handlers.length; i++ )
handlers[ i ].apply( this, arguments )
barneycarroll / animator.js
Last active Jun 11, 2021
A factory for decorating Mithril modules / views / elements with incoming and outgoing animations.
View animator.js
var animating = false;
// Define an animator consisting of optional incoming and outgoing animations.
// alwaysAnimate is false unless specified as true: false means an incoming animation will only trigger if an outgoing animation is also in progress.
// forcing dontClone to true means the outward animation will use the original element rather than a clone. This could improve performance by recycling elements, but can lead to trouble: clones have the advantage of being stripped of all event listeners.
function animator( incoming, outgoing, alwaysAnimate, dontClone ){
// The resulting animator can be applied to any number of components
return function animate( x, y, z ){
var config;
var parent;
barneycarroll / grid.js
Created Nov 13, 2014
A grid vm for Mithril
View grid.js
'use strict';
function grid( axis ){
var items = [];
var pending;
var container;
function queue(){
if( pending ) ( window.cancelAnimationFrame || window.clearTimeout )( pending );
StephanHoyer / gist:de107b794c43f28ffd75
Last active Nov 14, 2019
SVG Icons with mithril.js
View gist:de107b794c43f28ffd75

Icons have been part of applications since ages. Also most websites rely on icons. There were several ways to use them. First we used plain files then image sprites to reduce requests. Nowadays everyone uses icon fonts like font-awesome or glyphicons.

They are infinetly scaleable and styleable with css. The downside is they use pseudo elements for displaying. This is not only difficult to handle but also non-optimal for accessibilty.

A famous CSS-Tricks post brings SVG icons into play. The are also scalable and they behave like normal images. But we also want to have a sprite to not load any images seperatly and kill our servers and our sites performance. The proposed version is to create sprites with grunt or gulp using the symbol-trick. It's basically add every icon to a hidden sprite-image and give every icon an id-property.

<svg xmlns="" style="display: none;">
  <symbol id="beaker" viewBox="214.7 0 182.6 792">
View mithril.utils.js
// Mithril utilities
// Multi allows you to execute multiple functions as one.
// Especially useful when you want to bind several event handlers
// or run several config functions, for example binding a DOM plugin
// & assigning routing to a link.
// m( 'a.select2', {
// config : multi( m.route, select2plugin )
// }, [] );
lttlrck / gist:9628955
Created Mar 18, 2014
rename git branch locally and remotely
View gist:9628955
git branch -m old_branch new_branch # Rename branch locally
git push origin :old_branch # Delete the old branch
git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote