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
380
Feel the Glimmer
marcoow
1
240
Templates and Logic in Ember
marcoow
0
770
Other Decks in Programming
See All in Programming
CEDEC 2025 『ゲームにおけるリアルタイム通信への QUIC導入事例の紹介』
segadevtech
3
890
Nuances on Kubernetes - RubyConf Taiwan 2025
envek
0
170
物語を動かす行動"量" #エンジニアニメ
konifar
14
5.1k
AI時代のドメイン駆動設計-DDD実践におけるAI活用のあり方 / ddd-in-ai-era
minodriven
20
7.8k
書き捨てではなく継続開発可能なコードをAIコーディングエージェントで書くために意識していること
shuyakinjo
1
280
Vibe coding コードレビュー
kinopeee
0
450
コーディングは技術者(エンジニア)の嗜みでして / Learning the System Development Mindset from Rock Lady
mackey0225
2
490
AIレビュアーをスケールさせるには / Scaling AI Reviewers
technuma
2
200
LLMOpsのパフォーマンスを支える技術と現場で実践した改善
po3rin
8
940
ライブ配信サービスの インフラのジレンマ -マルチクラウドに至ったワケ-
mirrativ
1
230
DynamoDBは怖くない!〜テーブル設計の勘所とテスト戦略〜
hyamazaki
1
200
Understanding Ruby Grammar Through Conflicts
yui_knk
1
110
Featured
See All Featured
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
46
7.6k
Building a Modern Day E-commerce SEO Strategy
aleyda
43
7.4k
GitHub's CSS Performance
jonrohan
1031
460k
Automating Front-end Workflow
addyosmani
1370
200k
Rebuilding a faster, lazier Slack
samanthasiow
83
9.1k
Bash Introduction
62gerente
614
210k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
31
2.2k
Java REST API Framework Comparison - PWX 2021
mraible
33
8.8k
Git: the NoSQL Database
bkeepers
PRO
431
65k
Fantastic passwords and where to find them - at NoRuKo
philnash
51
3.4k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
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