Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Feel the Glimmer - ParisJS
Search
Marco Otte-Witte
November 29, 2017
Programming
1
520
Feel the Glimmer - ParisJS
An intoduction to Ember.js' Glimmer VM VM and Glimmer.js
Marco Otte-Witte
November 29, 2017
Tweet
Share
More Decks by Marco Otte-Witte
See All by Marco Otte-Witte
Securing Technology Investments
marcoow
0
200
Handling images on the web
marcoow
0
410
SSR, SPAs and PWAs
marcoow
0
350
Fast, Fast, Fast
marcoow
2
500
Feel the Glimmer - MunichJS 11/17
marcoow
0
140
The JSON:API spec
marcoow
3
1.8k
Leveraging the complete Ember Toolbelt
marcoow
0
370
Feel the Glimmer
marcoow
1
240
Templates and Logic in Ember
marcoow
0
760
Other Decks in Programming
See All in Programming
Bytecode Manipulation 으로 생산성 높이기
bigstark
2
370
Azure AI Foundryではじめてのマルチエージェントワークフロー
seosoft
0
130
データの民主化を支える、透明性のあるデータ利活用への挑戦 2025-06-25 Database Engineering Meetup#7
y_ken
0
310
ruby.wasmで多人数リアルタイム通信ゲームを作ろう
lnit
2
250
XP, Testing and ninja testing
m_seki
3
180
地方に住むエンジニアの残酷な現実とキャリア論
ichimichi
5
1.3k
来たるべき 8.0 に備えて React 19 新機能と React Router 固有機能の取捨選択とすり合わせを考える
oukayuka
2
840
Composerが「依存解決」のためにどんな工夫をしているか #phpcon
o0h
PRO
1
210
Team operations that are not burdened by SRE
kazatohiei
1
190
ドメインモデリングにおける抽象の役割、tagless-finalによるDSL構築、そして型安全な最適化
knih
11
2k
#kanrk08 / 公開版 PicoRubyとマイコンでの自作トレーニング計測装置を用いたワークアウトの理想と現実
bash0c7
1
320
『自分のデータだけ見せたい!』を叶える──Laravel × Casbin で複雑権限をスッキリ解きほぐす 25 分
akitotsukahara
1
500
Featured
See All Featured
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
48
5.4k
Code Review Best Practice
trishagee
68
18k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
228
22k
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
29
9.5k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
107
19k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
32
2.3k
Measuring & Analyzing Core Web Vitals
bluesmoon
7
490
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
8
670
Build your cross-platform service in a week with App Engine
jlugia
231
18k
How to Ace a Technical Interview
jacobian
277
23k
Scaling GitHub
holman
459
140k
Building an army of robots
kneath
306
45k
Transcript
Feel the Glimmer
Marco Otte-Witte @marcoow
simplabs.com @simplabs
None
None
https://glimmerjs.com
"light-weight UI components for the web"
https://github.com/emberjs/ember.js/issues/13949
https://worldvectorlogo.com/logo/react
<ul> {this.props.people.map(function(person) { return <li>{person}</li>; })} </ul> ['Dan Abramov', 'Ben
Alpert'] { type: 'ul', props: { 'class': 'list' }, children: [ { type: 'li', props: {}, children: ['Dan Abramov'] }, { type: 'li', props: {}, children: ['Ben Alpert'] } ] }
+ { type: 'ul', props: { 'class': 'list' }, children:
[ + { type: 'li', props: {}, children: ['Dan Abramov'] } + { type: 'li', props: {}, children: ['Ben Alpert'] } + ]}
<ul> {this.props.people.map(function(person) { return <li>{person}</li>; })} </ul> ['Dan Abramov', 'Yehuda
Katz'] { type: 'ul', props: { 'class': 'list' }, children: [ { type: 'li', props: {}, children: ['Dan Abramov'] }, { type: 'li', props: {}, children: ['Yehuda Katz'] } ] }
+ { type: 'li', props: {}, children: ['Yehuda Katz'] }
- { type: 'li', props: {}, children: ['Ben Alpert'] }
The Glimmer Pipeline 1. Pre-Compilation 2. Initial render 3. Re-render
Pre-Compilation Templates are pre-compiled (at build time) into opcodes that
the Glimmer VM executes during initial render
<ul class="nav nav-tabs"> <li class="active"> <a href="/home">{{home}}</a> </li> <li> <a
href="/profile">{{profile}}</a> </li> <li> <a href="/messages">{{messages}}</a> </li> </ul>
[ [6,"ul"], [9,"class","nav nav-tabs"], [7] [0," \n "], [6,"li"], [9,"class","active"],
[7], [0,"\n "], [6,"a"], [9,"href","/home"], [7], [1, [18,"home"], false ], [8], [0,"\n "], [8], … [0,"\n"], [8] ]
Offset 00 01 02 03 04 05 06 07 08
09 0A 0B 0C 0D 0E 0F 00000000 19 01 00 00 1F 00 16 01 01 00 20 00 16 01 02 00 .......... ..... 00000010 19 01 03 00 1F 00 16 01 04 00 04 01 00 00 05 01 ................ 00000020 05 00 18 01 00 00 16 01 06 00 20 00 16 01 02 00 .......... ..... 00000030 19 01 07 00 30 00 04 01 00 00 05 01 08 00 3D 02 ....0.........=. 00000040 00 00 18 00 01 01 01 00 31 00 10 01 08 00 1D 03 ........1....... 00000050 09 00 00 00 00 00 1F 00 16 01 0A 00 20 00 14 00 ............ ...
Initial render DOM elements are created and opcodes for re-renders
are generated
[ [6,"ul"], [9,"class","nav nav-tabs"], [7] [0," \n "], [6,"li"], [9,"class","active"],
[7], [0,"\n "], [6,"a"], [9,"href","/home"], [7], [1, [18,"home"], false ], [8], [0,"\n "], [8], … [0,"\n"], [8] ]
<ul class="nav nav-tabs"> <li class="active"> <a href="/home">Start</a> </li> <li> <a
href="/profile">Profil</a> </li> <li> <a href="/messages">Nachrichten</a> </li> </ul>
<ul class="nav nav-tabs"> <li class="active"> <a href="/home">{{home}}</a> </li> <li> <a
href="/profile">{{profile}}</a> </li> <li> <a href="/messages">{{messages}}</a> </li> </ul> only these can change at all
[ ["OPTIMIZED-CAUTIOUS-UPDATE", "home"], ["OPTIMIZED-CAUTIOUS-UPDATE", "profile"], ["OPTIMIZED-CAUTIOUS-UPDATE", "messages"] ]
Update Renders Update opcodes are executed
let foo = 1; let fooReference: Reference<number> = { value()
{ return foo; } }; fooReference.value(); // => 1 foo++; fooReference.value(); // => 2
let foo = 1; let bar = 2; let fooReference:
Reference<number> = { value() { return foo; } }; let barReference: Reference<number> = { value() { return bar; } }; let fooPlusBarReference: Reference<number> = { value() { return fooReference.value() + barReference.value(); } }; fooPlusBarReference.value(); // => 3 foo = 2; fooPlusBarReference.value(); // => 4
interface EntityTag<T> { value(): T; validate(ticket: T): boolean; } interface
Tagged { tag: EntityTag<any>; } interface TaggedReference<T> extends Reference<T>, Tagged { }
const person: TrackedObject = { tag: new DirtyableTag(), name: 'Godfrey
Chan' }; let nameReference: VersionedReference<string> { tag: person.tag, value() { return person.name; } }; nameReference.value(); // => 'Godfrey Chan' nameReference.tag.value(); // => 1 person.name = 'Yehuda Katz'; nameReference.tag.validate(1); // => false nameReference.value(); // => 'Yehuda Katz' nameReference.tag.value(); // => 2
class UpdateOpcode { execute() { if (!this.reference.tag.validate(this._lastTag)) { this._lastTag =
this.reference.tag.value(); let newValue = this.reference.value(); this.domNode.textContent = newValue; // update DOM } } }
http://yehudakatz.com/2017/04/05/the-glimmer-vm-boots-fast-and-stays-fast/
http://yehudakatz.com/2017/04/05/the-glimmer-vm-boots-fast-and-stays-fast/
The Glimmer VM was released with Ember.js 2.10
"Stability without Stagnation"
None
https://glimmerjs.com https://glimmerjs.com
» ls -lh 514K ember-data.prod.js 1.6M ember.prod.js 1.1K react-dom.js 644K
react.js
None
None
None
Like React, Glimmer.js is only the "V" and some of
the "C" in "MVC" (aka components)
npm install -g ember-cli ember new my-app -b @glimmer/blueprint cd
my-app/ && ember s
tree . my-app !"" config # !"" environment.js # !""
module-map.ts # $"" resolver-configuration.ts !"" dist/ !"" src # !"" ui # # !"" components # # # $"" my-app # # # !"" component.ts # # # $"" template.hbs # # !"" styles # # # $"" app.css # # $"" index.html # !"" index.ts # $"" main.ts !"" ember-cli-build.js # ... other files ...
tree . my-app !"" config # !"" environment.js # !""
module-map.ts # $"" resolver-configuration.ts !"" dist/ !"" src # !"" ui # # !"" components # # # $"" my-app # # # !"" component.ts # # # $"" template.hbs # # !"" styles # # # $"" app.css # # $"" index.html # !"" index.ts # $"" main.ts !"" ember-cli-build.js # ... other files ...
https://github.com/Microsoft/TypeScript/issues/1375
<ul id="todo-list" class="todo-list"> {{#each visibleTodos key="_id" as |todo|}} <TodoItem @todo={{todo}}
@onEdit={{action editTodo}} @onToggle={{action toggleTodo}} @onDestroy={{action removeTodo}} /> {{/each}} </ul>
@tracked('todos') get activeTodos() { return this.todos.filter(todo => !todo.completed) }
Demo https://github.com/glimmerjs/todomvc-demo
Try it yourself! http://try.glimmerjs.com
Ember's Future
Where does this leave Ember.js?
https://emberjs.com/blog/2017/04/05/emberconf-2017-state-of-the-union.html
None
None
None
saved time and money
cp -r glimmer-app/src/ui/components ember-app/src/ui
ember-router will be the next thing to be extracted into
it's own standalone library
https://glimmerjs.com
https://www.dotjs.io
Thanks
Q&A
simplabs.com @simplabs