Framework Migration - sgml/signature GitHub Wiki

The fact is that when node.js came along, JavaScript replaced Java and C#, but this led to things like classes in ES6, dependency injection in Angular.js, decorators in Ember, CSS-in-JS, ecosystem lock-in, engine-lock-in, etc, etc.

Legacy but still Active

Framework Open vs Closed Issues (2023–2025) Closure Rate & Activity Community Support Signal
jQuery ~78 open vs ~2,297 closed ~97% closure rate; issues eventually resolved, but turnaround slower Legacy but maintained; backed by OpenJS Foundation, bug fixes continue but pace is modest
Ember.js ~298 open vs ~6,472 closed >95% closure rate; highly active triage and resolution Strong community vitality; frequent releases, RFCs, and LTS cycles
Mithril.js ~19 open vs hundreds closed Healthy closure rate (~90%+); smaller volume of issues, many resolved Maintenance mode; project considered feature‑complete, with occasional updates and responsive maintainers

Migration: 0 to 100

Feature Python 2to3 Has AngularJS → Angular Lacks Vue 2 → Vue 3 Lacks React 15 → React 18 Lacks
AST-based transformation engine No unified AST tool; relies on manual rewrites Partial codemod support; not full AST coverage Codemods exist but are limited in scope
Declarative, modular fixers No fixers; migration is imperative and manual Codemods are imperative, not declarative No modular fixers; codemods are ad hoc
Centralized migration tooling (2to3) No canonical tool; multiple fragmented approaches CLI tools exist but lack full coverage No single migration tool; relies on community
Stable grammar across versions Full rewrite with new grammar and architecture Minor syntax changes; reactivity model shifted JSX and lifecycle changes introduce instability
Semantic-aware rewrites No semantic analysis; manual logic refactoring Limited semantic awareness in tooling Codemods don’t handle semantic context well
Community-wide adoption of toolchain Migration paths vary by org; no universal tooling Gradual opt-in; no enforced migration path Optional adoption; no enforced migration path
Versioned, namespaced standard library Angular modules restructured; no direct mapping Some modules renamed; partial compatibility Mostly compatible, but some APIs deprecated
One-shot transformation with audit clarity Requires full rewrite and retesting Requires manual review and testing Requires manual validation and testing
80 hours 1200 hours 300 hours 200 hours

Flash to HTML5

flash_games:
  - title: "Impossible Quiz (HTML5 Fan Port)"
    original_flash_game: "Splapp-Me-Do’s Impossible Quiz"
    html5_port_location: "itch.io"
    price: "$2.99"
    licensing: "Unlicensed"

  - title: "Run 1 (HTML5 Fan Port)"
    original_flash_game: "Joseph Cloutier’s Run"
    html5_port_location: "itch.io"
    price: "$1.50"
    licensing: "Unlicensed"

  - title: "Portal: The Flash Version (HTML5)"
    original_flash_game: "Nitrome/Valve fan mod"
    html5_port_location: "itch.io"
    price: "$2.99"
    licensing: "Unlicensed"

  - title: "Intrusion 2 HTML5"
    original_flash_game: "FlipAnimation’s Intrusion 2"
    html5_port_location: "itch.io"
    price: "$3.50"
    licensing: "Unlicensed"

  - title: "Fancy Pants Demo ↔ Rebundle"
    original_flash_game: "Brad Borne’s Fancy Pants"
    html5_port_location: "itch.io"
    price: "$4.99"
    licensing: "Unlicensed"

why:
  - "Flash libraries and APIs don’t map one-to-one onto modern browser engines, so most studios opted to rebuild games in engines like Unity or Haxe/OpenFL."
  - "When Flash reached end-of-life in 2020, preservation efforts (Flashpoint archive, Ruffle emulator) focused on free access rather than paid HTML5 rewrites."
  - "Paid reissues of Flash classics appeared as native mobile or console apps, not as standalone HTML5 pay-to-play experiences."

next_steps:
  - "Script a crawler (Node.js or Python) to enumerate and audit paid HTML5 ‘Flash ports’ on itch.io by filtering the HTML5 tag and price metadata."
  - "Explore BlueMaxima’s Flashpoint archive and the Ruffle emulator for comprehensive preservation of official Flash titles."
  - "Generate a diagnostic manifest or sample crawler scaffold to support feature lineage, price metadata tracking, and future audit requirements."

CMS Comparison

# YAML front matter is a block of metadata defined at the top of a file,
# typically enclosed between triple-dashed lines (---). It's commonly used
# in Markdown and static site generators like Jekyll or Hugo to define
# variables such as title, layout, tags, and more.
# For a detailed reference, see: https://jekyllrb.com/docs/front-matter/

---
methodology:
  issue_volume: >
    Based on the number of GitHub and issue tracker entries
    tagged as bugs or enhancement requests relating to abstraction failures.
  severity: >
    Judged by how often issues force developers to understand underlying implementation details,
    such as schema quirks, tight coupling, or inconsistent APIs.
  community_sentiment: >
    Informed by sentiment across developer platforms including Reddit, StackOverflow,
    and technical blogs—especially threads expressing frustration with abstraction pitfalls.
  tooling_maturity: >
    Assessment of whether SDKs and APIs successfully abstract backend complexity,
    or expose internals through inconsistent specs, edge-case behavior, or documentation gaps.
---

leaky_abstraction_index:
  Storyblok:
    index: 2-3
    notes: >
      Most issues are minor UI quirks or edge-case API behavior.
      Strong abstraction between content and presentation.
  Builder_io:
    index: 3-4
    notes: >
      Few GitHub issues directly related to abstraction leaks.
      Most complaints are about syncing visual editor with custom logic.
  Contentful:
    index: 5-6
    notes: >
      Frequent issues around API rate limits, nested queries, and preview inconsistencies.
      Some abstraction leaks in modeling and SDK behavior.
  Contentstack:
    index: 6-7
    notes: >
      OpenAPI spec inconsistencies, SDK quirks, and schema modeling challenges.
      Manual SDK maintenance suggests abstraction fragility.
  Sanity:
    index: 6-7
    notes: >
      GROQ query language and schema design complexity lead to abstraction leaks.
      Developer complaints about unintuitive modeling.
  Drupal:
    index: 8-9
    notes: >
      Deep coupling of content, presentation, and logic.
      Frequent issues with hooks, theme layer, and render pipeline.
      Leaky by design.
  Nuxt_Content:
    index: 5-6
    notes: >
      SQLite-based content querying introduces complexity in deployment environments.
      Issues with dynamic routing, hydration mismatches, and edge-case caching behavior.
      Markdown component rendering and MDC syntax can expose internal quirks.
  Next_Content:
    index: 6-7
    notes: >
      React Server Components and dynamic routing introduce abstraction leaks.
      Developers often encounter hydration errors, serialization limits, and context boundary confusion.
      The "magic" of server/client boundaries can fail silently or unpredictably.

Utils

  • Data Binding (getter/setter)
  • Event Handling (handleEvent and IDs)
  • Themes (CSSOM)
  • Caching (documentFragments)
  • Template Cache (lazy loading)

Closed to Open Source Desktop Publishing

(data-transformation
  (SharePoint→phoDav
    (source-structure
      (sites
        (site
          (name "HR")
          (folders
            ("Policies" "Benefits" "Forms"))
          (metadata
            (custom-fields
              ("Author" "ApprovalStatus" "RetentionPeriod")))))
    (target-structure
      (directories
        (root "/srv/phodav/hr")
        (subdirs
          ("policies" "benefits" "forms")))
      (metadata-mapping
        (sidecar-files
          ("Author" → "author.json")
          ("ApprovalStatus" → "status.json")
          ("RetentionPeriod" → "retention.json"))
        (extended-attributes optional)))
    (transformations
      (flatten-hierarchy t)
      (normalize-naming
        (spaces → hyphens)
        (uppercase → lowercase))
      (convert-documents
        (DOCX → ODT or PDF)
        (XLSX → CSV))
      (remove-redundancy
        (duplicate-files → deduplicated)
        (obsolete-metadata → pruned)))))

  (Alfresco→Org-mode
    (source-structure
      (repository
        (folders
          ("Projects" "Reports" "Workflows"))
        (documents
          (types
            ("Text" "Spreadsheet" "Diagram"))
        (metadata
          (tags
            ("Confidential" "Draft" "Final"))
          (workflow-states
            ("Submitted" "Reviewed" "Approved")))))
    (target-structure
      (org-files
        (root "~/org")
        (subtrees
          ("projects" "reports" "workflows"))
        (headings
          (mapped-from filenames))
        (properties
          (tags → :TAG:)
          (workflow-states → TODO keywords)))
      (transformations
        (convert-documents
          (DOCX → Org)
          (PDF → linked)
          (XLSX → table blocks))
        (embed-metadata
          (tags → Org-mode tags)
          (workflow → TODO states))
        (restructure
          (folder-depth → subtree-depth)
          (filename → heading-title))
        (version-control
          (Git-init t)
          (commit-history → audit-trail))
        (publish-pipeline
          (Org-export → HTML/PDF)
          (static-site optional)))))

Frameworks

Full Stack

Rank Project Main Repository / Reference URL Estimated Contributors Estimated Contributors URL Programming Language Years of History Latest PR Merge Date Latest PR Merge Date URL Reference URL
1 AEM ACS AEM Samples ~16 Contributors Java 23 2025-03-15 Commits https://github.com/Adobe-Consulting-Services/acs-aem-samples
2 SailPoint developer.sailpoint.com ~20 Contributors Java 20 2025-03-20 Commits https://github.com/sailpoint-oss/developer.sailpoint.com
3 Dancer (Perl) Dancer ~35 Contributors Perl 20 2025-03-24 Commits https://github.com/PerlDancer/Dancer
4 TiddlyWiki TiddlyWiki/TiddlyWiki5 ~40 Contributors JavaScript 21 2025-03-25 Commits https://github.com/TiddlyWiki/TiddlyWiki5
5 uPortal apereo/uPortal ~45 Contributors Java 20 2025-03-21 Commits https://github.com/apereo/uPortal
6 SharePoint SharePoint Developer Repositories ~50 n/a C# 24 2025-03-28 n/a https://learn.microsoft.com/en-us/sharepoint/dev/community/repositories
7 Catalyst (Perl) Catalyst Runtime ~55 Contributors Perl 20 2025-03-20 Commits https://github.com/perl-catalyst/catalyst-runtime
8 Shiny for Python py-shiny ~60 Contributors Python 3 2025-03-19 Commits https://github.com/posit-dev/py-shiny/
9 Budibase Budibase/budibase ~80 Contributors JavaScript 3 2025-03-22 Commits https://github.com/Budibase/budibase
10 Dancer2 (Perl) Dancer2 ~100 Contributors Perl 13 2025-03-26 Commits https://github.com/PerlDancer/Dancer2
11 SuiteCRM salesagility/SuiteCRM ~120 Contributors PHP 12 2025-03-25 Commits https://github.com/salesagility/SuiteCRM
12 Backdrop CMS backdrop/backdrop ~136 Contributors PHP 10 2025-03-23 Commits https://github.com/backdrop/backdrop
13 Alfresco CMS Alfresco/alfresco-community-repo ~150 Contributors Java 20 2025-03-18 Commits https://github.com/Alfresco/alfresco-community-repo
14 eXo Platform exoplatform/platform ~180 Contributors Java 13 2025-03-24 Commits https://github.com/exoplatform/platform
15 Gollum gollum/gollum ~200 Contributors Ruby 18 2025-03-25 Commits https://github.com/gollum/gollum
16 Shiny for R rstudio/shiny ~250 Contributors R 13 2025-03-21 Commits https://github.com/rstudio/shiny
17 Liferay liferay/liferay-portal ~300 Contributors Java 25 2025-03-22 Commits https://github.com/liferay/liferay-portal
18 Jekyll jekyll/jekyll ~320 Contributors Ruby 17 2025-03-30 Commits https://github.com/jekyll/jekyll
19 Hugo gohugoio/hugo ~340 Contributors Go 12 2025-03-28 Commits https://github.com/gohugoio/hugo
20 FastAPI FastAPI/FastAPI ~350 Contributors Python 7 2025-03-30 Commits https://github.com/FastAPI/FastAPI
21 Phoenix (Elixir) phoenixframework/phoenix ~400 Contributors Elixir 10 2025-03-27 Commits https://github.com/phoenixframework/phoenix
22 Mojolicious (Perl) mojolicious/mojo ~420 Contributors Perl 14 2025-03-22 Commits https://github.com/mojolicious/mojo/
23 Yii yiisoft/yii2 ~500 Contributors PHP 17 2025-03-26 Commits https://github.com/yiisoft/yii2
24 Flask pallets/flask ~700 Contributors Python 15 2025-04-01 Commits https://github.com/pallets/flask
25 MeteorJS meteor/meteor ~760 Contributors JavaScript 13 2025-03-29 Commits https://github.com/meteor/meteor
26 Laravel laravel/laravel ~1,000 Contributors PHP 14 2025-03-31 Commits https://github.com/laravel/laravel
27 Drupal drupal/drupal ~1,500 Contributors PHP 24 2025-03-24 Commits https://github.com/drupal/drupal
28 Django django/django ~2,000 Contributors Python 20 2025-03-31 Commits https://github.com/django/django
29 Symfony symfony/symfony ~3,920 Contributors PHP 20 2025-03-30 Commits https://github.com/symfony/symfony
30 Ruby on Rails Rails Contributors (or rails/rails) ~6,900 Contributors Ruby 21 2025-04-02 Commits https://contributors.rubyonrails.org/

MVC App Server Request/Response Lifecyle Comparison

Aspect Laravel (PHP) -- Similar Syntax Flask (Python) -- Different Semantics Ruby on Rails (Ruby) -- Similar Semantics
Routing Syntax Declarative routes or annotations that map cleanly to controller methods When using Flask Blueprints, routing still relies on decorators that look declarative, but each decorator binds the route to a Blueprint object at import time; this resembles Laravel's grouped routes or controller namespaces in syntax, yet lacks Laravel's centralized, framework-managed routing layer, making behavior dependent on module import order rather than a predictable registration phase Rails uses a centralized routing file (config/routes.rb) with deterministic evaluation order; routes map to controller actions through a predictable, framework-managed registration phase
Controller Structure Controllers are classes with a framework-managed lifecycle, automatic dependency resolution, and predictable construction via the container Even when using Flask-Injector to enable constructor-style dependency injection, Flask does not provide true controllers; route handlers remain plain functions or lightweight classes whose construction is tied to import time rather than a framework-managed lifecycle, making them superficially similar to Laravel controllers in syntax but fundamentally different in behavior Rails controllers are classes inheriting from ApplicationController, with a predictable lifecycle, filters, and framework-managed instantiation; dependencies are typically resolved through conventions or explicit initialization, not import timing
Middleware Behavior Predictable pipeline with global and per-route middleware Decorators can resemble middleware but don't form a pipeline; execution order depends on import timing Rails uses Rack middleware with a deterministic stack defined in config/application.rb; before/after filters inside controllers are executed in a predictable order
Dependency Injection Robust container with auto-resolution and binding rules With Flask-Injector, dependencies can be passed into functions or lightweight classes using constructor-style injection, but this does not create a true application-managed lifecycle; objects are instantiated when modules are imported or when routes are registered, not through a centralized container like Laravel's, making DI appear syntactically familiar while remaining semantically shallow and timing-dependent Rails does not use a DI container by default; dependencies are typically resolved through autoloading, module mixins, or explicit instantiation, but lifecycle is still deterministic because controller objects are created per request by the framework
Configuration Model Centralized config files with environment-driven overrides Configuration is Python code; execution order and import timing matter Rails uses a centralized config directory with environment-specific overrides; configuration is loaded in a deterministic boot sequence managed by the framework
Request Lifecycle Structured: middleware -> controller -> response -> middleware Once a request matches a route, Flask immediately executes the associated function without passing through a framework-managed controller lifecycle or middleware pipeline Rails has a deterministic request lifecycle: Rack middleware -> routing -> controller instantiation -> filters -> action -> rendering -> middleware return path
Error Handling Framework catches exceptions and routes them through handlers Errors propagate unless explicitly caught; decorators don't provide Laravel-style safety nets Rails has centralized exception handling with rescue_from, middleware-level handlers, and predictable fallback behavior
State & Context Request/app context resolved via container Request/app context stored in a per-request global that acts like a globally accessible object whose value appears shared across the application, but is actually recreated for every incoming request -- which introduces risks such as accidental re-entry into the request lifecycle, similar to a Laravel application invoking the Request object or a request-bound facade before the framework has fully entered the HTTP cycle Rails request state is encapsulated in controller instances and Rack env; no global request object exists, and state is isolated per request through framework-managed instantiation
Route Parameters Strongly typed and validated via routing system Parsed dynamically; type conversion is manual unless using extensions Rails extracts route parameters deterministically and passes them to controller actions as method arguments or via params hash
Security Defaults CSRF, auth guards, validation built-in Minimal; security must be added manually via extensions Rails includes CSRF protection, strong parameters, and secure defaults for cookies, sessions, and form handling
App Context Laravel's container resolves context automatically and predictably Flask's app/request context must be explicitly pushed or is implicitly active only during requests Rails maintains application context through the framework boot sequence and per-request controller instantiation; no manual context pushing is required
Pre- and Post- Gotchas Laravel's before/after hooks and middleware ordering are explicit and predictable The order in which decorators, extensions, and application objects are imported or created can cause route handlers, decorators, or extensions to behave differently depending on the exact moment they were attached -- a timing-dependent issue that cannot occur in Laravel because Laravel's service providers, middleware, and routing are initialized in a fixed, framework-controlled order Rails before_action and after_action filters run in a deterministic order; middleware stack is fixed at boot time and not affected by import timing
Constructor Injection Enforcement Laravel enforces constructor injection naturally: controllers are instantiated by the container, dependencies are resolved predictably, and any attempt to bypass constructor injection (e.g., resolving services manually inside methods) is considered an anti-pattern Flask-Injector can enforce constructor-style injection on classes or functions, but enforcement is shallow: Flask does not instantiate controllers through a container, so constructor injection only applies at import or registration time; this means enforcement cannot guarantee lifecycle correctness, cannot prevent service-locator fallbacks, and cannot ensure that all dependencies are resolved through constructors the way Laravel's container guarantees Rails does not enforce constructor injection; controllers are instantiated per request with no DI container, but lifecycle is deterministic and does not depend on import timing
Non-Deterministic States Laravel's behavior is largely deterministic: service providers load in a fixed order, middleware pipelines are explicit, route registration is centralized, and request lifecycle state is stable; nondeterminism typically only arises from external systems (queues, caches, async jobs) rather than the framework itself Flask can exhibit nondeterministic behavior due to import-order-dependent Blueprint registration, decorator execution timing, extension initialization order, context stack push/pop timing, and Flask-Injector's dependency resolution occurring at import or registration time rather than at a controlled lifecycle stage; these timing-sensitive states can cause handlers, dependencies, or context values to differ between runs even when the code is unchanged Rails behavior is deterministic: autoloading, routing, middleware, and controller instantiation follow a fixed boot sequence; nondeterminism is limited to external systems, not framework internals
Request Lifecycle (Timing + Tests + Concurrency) Runtime behavior is deterministic; automated tests behave consistently; heisenbugs are rare; mocks resolve predictably. Concurrency: thread-per-request leads to paging, disk i/o, and latency amplification Runtime behavior depends on import timing; automated tests may pass or fail depending on module import order; heisenbugs are common; mocks may attach too late. Concurrency: Flask does not suffer from thread-per-request collapse; async workers avoid paging, disk i/o, and latency amplification. Runtime behavior is deterministic; automated tests behave consistently; heisenbugs are rare; mocks are stable. Concurrency: thread-per-request leads to paging, disk i/o, and latency amplification
Response Lifecycle (Timing + Tests + Concurrency) Runtime behavior is deterministic; automated tests behave consistently; heisenbugs are rare; mocks behave predictably. Concurrency: thread-per-request leads to paging, disk i/o, and latency amplification Runtime behavior depends on import timing; automated tests may see different response shapes; heisenbugs are common; mocks may attach too late. Concurrency: Flask does not suffer from thread-per-request collapse; async workers avoid paging, disk i/o, and latency amplification. Runtime behavior is deterministic; automated tests behave consistently; heisenbugs are rare; mocks are stable. Concurrency: thread-per-request leads to paging, disk i/o, and latency amplification
Middleware Lifecycle (Timing + Tests + Concurrency) Runtime behavior is deterministic; automated tests behave consistently; heisenbugs are rare; mocks behave predictably. Concurrency: thread-per-request leads to paging, disk i/o, and latency amplification Runtime behavior depends on import timing; automated tests may see different middleware effects; heisenbugs are common; mocks may attach too late. Concurrency: Flask does not suffer from thread-per-request collapse; async workers avoid paging, disk i/o, and latency amplification. Runtime behavior is deterministic; automated tests behave consistently; heisenbugs are rare; mocks are stable. Concurrency: thread-per-request leads to paging, disk i/o, and latency amplification

Frontend

Library Language Deprecated Library Modern Drop‑In Replacement API Compatibility GitHub URL
jQuery JavaScript jQuery Cash True github.com/fabiospampinato/cash
Moment.js JavaScript Moment.js Day.js True github.com/iamkun/dayjs
Lodash JavaScript Lodash (CommonJS version) lodash‑es True github.com/lodash/lodash
RequireJS JavaScript RequireJS curl.js True github.com/cujojs/curl
Library Language Deprecated Library Modern Drop‑In Replacement API Compatibility GitHub URL
jQuery JavaScript jQuery Cash True github.com/fabiospampinato/cash
Moment.js JavaScript Moment.js Luxon False github.com/moment/luxon
Lodash JavaScript Lodash Ramda False github.com/ramda/ramda
Axios JavaScript Axios Ky False github.com/sindresorhus/ky
RequireJS JavaScript RequireJS SystemJS False github.com/systemjs/systemjs
Blueprint CSS CSS Blueprint CSS Bulma False github.com/jgthms/bulma

Resources

Safe Subsetting

frameworks:
  - name: "Hyperapp"
    year: 2017
    url: "https://hyperapp.dev"
    description: "A minimalist framework focused on simplicity and functional programming, usable directly in the browser."
  - name: "HTM"
    year: 2018
    url: "https://github.com/developit/htm"
    description: "A lightweight library for JSX-like syntax without compilation, compatible with frameworks like Preact."
  - name: "Lit"
    year: 2018
    url: "https://lit.dev"
    description: "A library for building web components using native browser APIs, without requiring a build process."
  - name: "Alpine.js"
    year: 2019
    url: "https://alpinejs.dev"
    description: "A lightweight framework for declarative, reactive UI, easily usable without Node.js or compilation."
  - name: "Petite-Vue"
    year: 2021
    url: "https://github.com/vuejs/petite-vue"
    description: "A minimalist subset of Vue.js, focused on progressive enhancement and browser-native use."

Freelancing

Form Validation

vee-validate

Technique Purpose DOM Leaky Abstraction Root Cause Documentation URL
data-vv-validate-on="blur" Delays validation until input is committed DOM emits input events before user intent is epistemically settled VeeValidate: Validation Triggers
nextTick() + until() Ensures validation settles before reacting Vue's reactivity pipeline races ahead of DOM mutation visibility Vue: nextTick · VueUse: until
Avoid validate-on="input" Prevents premature validation on touch devices Touch devices emit synthetic input events on partial composition VeeValidate: Avoid Input Trigger
Use handleSubmit() Centralizes validation before triggering downstream actions Form submission bypasses intermediate DOM state, enforcing batch logic VeeValidate: handleSubmit

valibot

Technique Purpose DOM Leaky Abstraction Root Cause Documentation URL
valibot.safeParse() Validates input against schema without throwing DOM input state may be incomplete or transient during parse Valibot: safeParse
valibot.transform() Applies coercion or normalization before validation DOM values often arrive as strings, masking semantic intent Valibot: transform
valibot.union() Allows multiple schema interpretations for flexible input DOM ambiguity in field types (e.g. date vs string) Valibot: union
Manual onBlur + safeParse() Defers validation until user commits input DOM emits premature input events before epistemic intent is settled Valibot: Usage Guide
Centralized handleSubmit() wrapper Batches validation and submission logic DOM form state may be inconsistent across fields during interaction Valibot: Form Integration

Product Roadmapping

Concrete Abstractions (Commoditized Features) Leaky Abstractions (Custom Code Requirements)
Basic components like buttons, modals, and forms in no-code tools (React, Vue, Svelte, Solid.js). Advanced custom components with specific business logic or unique interactivity.
General UI templates or themes provided by no-code tools. Highly customized designs requiring precise styling or animations.
Simple state management for basic applications. Complex state management involving multiple data sources or asynchronous actions.
Standard API integrations (e.g., connecting to common services like Stripe or Twilio). Custom API integrations with non-standard protocols or authentication mechanisms.
Standardized data visualization widgets (abstracting D3.js-like capabilities). Creating bespoke, domain-specific data visualizations.
Drag-and-drop functionality for building dashboards or reports. Performance optimizations for large-scale dynamic applications.
Responsive layouts generated automatically by frameworks/tools. Tailored responsiveness for niche devices or screen configurations.
Built-in routing for simple SPAs. Advanced routing mechanisms (e.g., conditional or nested routing).
One-size-fits-all performance tuning tools. Low-level performance tuning, like optimizing rendering or memory usage.

User Stories

Step Description Reference
Nuxt 2 to Nuxt Bridge Upgrade Nuxt 2 to the latest version, install Nuxt Bridge, update nuxt.config.js, and change commands to use nuxt2. Nuxt Bridge Overview
Nuxt Bridge to Nuxt 3 Install Nuxt 3, update nuxt.config.js to use Nuxt 3 features, and migrate plugins and middleware to the new format. Nuxt 3 Migration Overview
Webpack-Dev-Server to Nitro Replace webpack-dev-server with Nitro by updating the build and server configuration in nuxt.config.js. What's New With Nuxt 3
Vuex to Pinia Install Pinia, restructure Vuex modules into Pinia stores, and update state management logic. Migrating from Vuex to Pinia
Webpack to Vite Install Vite, update package.json scripts, replace webpack.config.js with vite.config.js, and configure Vite plugins. Migrating from Webpack to Vite
Babel to Esbuild Install Esbuild, update build scripts to use Esbuild, and configure Esbuild options in vite.config.js. Replacing Babel with Esbuild
Jest to Vitest Install Vitest, update test configuration files, and modify package.json scripts to use Vitest. Convert Jest to Vitest

Framework Agnostic Component Libraries

Dependency Injection

Schema Based Dependencies

Aspect Service Locator RADICORE Framework How it avoids DI Radicore Data Dictionary Example Postgres Equivalent to Radicore Schema Python Equivalent Idiom (PEP Quote)
Pattern Type anti-pattern in DI Full RAD framework not using containers or injection mechanisms automatically generates CRUD scripts cust_id SERIAL PRIMARY KEY, name TEXT, address TEXT Explicit is better than implicit.
Dependency Handling fetched at runtime explicit via database schema derived directly from schema metadata cust_id, name, address drives form and validation code cust_id SERIAL PRIMARY KEY, name VARCHAR(100), address VARCHAR(255) In the face of ambiguity, refuse the temptation to guess.
Transparency hidden inside locator lookups visible in transaction scripts and schema explicit in generated transaction scripts field types, constraints, and relationships order_id SERIAL PRIMARY KEY, cust_id INT REFERENCES customer(cust_id), total NUMERIC Readability counts.
Coupling container API database schema anchoring logic in database definitions order links to customer via foreign key fk_customer FOREIGN KEY (cust_id) REFERENCES customer(cust_id) Special cases aren't special enough to break the rules.
Testing must configure locator schema-driven mocks schema-driven artifacts mocked to simulate different table states INSERT INTO customer ... with test data Errors should never pass silently.
Philosophy obscures design database-first "no DI needed" — schema drives everything validation rules, e.g. email regex email_chk CHECK (email ~* '^[^@]+@[^@]+$') Simple is better than complex.

Decoupling a component from Nuxt to Vue for JSFiddle

# Step 1: Extract the Vue Component
component:
  file: MyComponent.vue
  content: |
    <template>
      <div>
        <label for="wiki-select">Choose an article:</label>
        <select id="wiki-select" v-model="selectedOption">
          <option v-for="option in options" :key="option" :value="option">{{ option }}</option>
        </select>
        <p>Selected option: {{ selectedOption }}</p>
      </div>
    </template>

    <script>
    export default {
      props: {
        options: {
          type: Array,
          required: true
        },
        selectedOption: {
          type: String,
          default: null
        }
      },
      methods: {
        foo(selectedOption) {
          console.log('Selected option changed:', selectedOption);
        }
      }
    };
    </script>

# Step 2: Extract the Vuex Store
store:
  file: store.js
  content: |
    import Vue from 'vue';
    import Vuex from 'vuex';
    import axios from 'axios';

    Vue.use(Vuex);

    export default new Vuex.Store({
      state: {
        options: [],
        selectedOption: null
      },
      mutations: {
        setOptions(state, options) {
          state.options = options;
        },
        setSelectedOption(state, option) {
          state.selectedOption = option;
        }
      },
      actions: {
        fetchOptions({ commit }) {
          const script = document.createElement('script');
          const callbackName = 'foo';
          
          window[callbackName] = (response) => {
            commit('setOptions', response.query.search.map(item => item.title));
          };

          const url = `https://en.wikipedia.org/w/api.php?action=query&format=json&list=search&srsearch=vue&origin=*&callback=${callbackName}`;
          script.src = url;
          document.body.appendChild(script);
          script.onload = () => {
            document.body.removeChild(script);
            delete window[callbackName];
          };
          script.onerror = (error) => {
            console.error('Error fetching options:', error);
            document.body.removeChild(script);
            delete window[callbackName];
          };
        }
      }
    });

# Step 3: Create the Main Entry File
main:
  file: main.js
  content: |
    import Vue from 'vue';
    import App from './MyComponent.vue';
    import store from './store';

    new Vue({
      store,
      render: h => h(App)
    }).$mount('#app');

# Step 4: Create an HTML File
html:
  file: index.html
  content: |
    <!DOCTYPE html>
    <html>
    <head>
      <meta charset="UTF-8">
      <title>Standalone Vue Component with Vuex</title>
      <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
      <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vuex.js"></script>
      <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
      <script src="./main.js" defer></script>
    </head>
    <body>
      <div id="app"></div>
    </body>
    </html>

# Summary
summary: |
  By following these steps, you can decouple a Vue component with a Vuex store from a Nuxt.js project and package it for use in a GitHub Gist. This process involves extracting the component and store, creating a main entry file, and setting up an HTML file to load the application.

Vue2 to Vue3

lifecycle_methods:
  mounting:
    vue2: 'mounted'
    vue3: 'onMounted'
  updating:
    vue2: 'updated'
    vue3: 'onUpdated'
  unmounting:
    vue2: 'beforeDestroy'
    vue3: 'onBeforeUnmount'
  before_mount:
    vue2: 'beforeMount'
    vue3: 'onBeforeMount'
  before_update:
    vue2: 'beforeUpdate'
    vue3: 'onBeforeUpdate'
  destroy:
    vue2: 'destroyed'
    vue3: 'onUnmounted'
vue_lifecycle_methods:
  vue2:
    beforeCreate: 
      description: "Called synchronously after the instance has been initialized, before data observation and event/watcher setup."
    created:
      description: "Called synchronously after the instance is created. At this point, the instance has finished processing options, which means the following have been set up: data observation, computed properties, methods, and watchers, though it has not yet been mounted to the DOM."
    beforeMount:
      description: "Called right before the mounting begins: the render function is about to be called for the first time."
    mounted:
      description: "Called after the instance has been mounted, where el is replaced by the newly created vm.$el. If the root instance is mounted to an in-document element, vm.$el will also be in-document when mounted is called."
    beforeUpdate:
      description: "Called when data changes, before the DOM is patched."
    updated:
      description: "Called after a data change causes the DOM to be re-rendered and patched."
    activated:
      description: "Called when a kept-alive component is activated."
    deactivated:
      description: "Called when a kept-alive component is deactivated."
    beforeDestroy:
      description: "Called right before a Vue instance is destroyed."
    destroyed:
      description: "Called after a Vue instance has been destroyed."
  vue3:
    beforeCreate:
      description: "Called right after the instance has been initialized, before data observation and event/watcher setup."
    created:
      description: "Called after the instance is created. At this point, the instance has finished processing options, which means the following have been set up: reactive data, computed properties, methods, and watchers, though it has not yet been mounted."
    beforeMount:
      description: "Called right before the mounting begins: the render function is about to be called for the first time."
    mounted:
      description: "Called after the instance has been mounted. At this point, the el property is replaced by the newly created vm.$el. If the root instance is mounted on an in-document element, vm.$el will also be in-document."
    beforeUpdate:
      description: "Called when data changes, before the virtual DOM is patched."
    updated:
      description: "Called after a data change causes the virtual DOM to be re-rendered and patched."
    beforeUnmount:
      description: "Called right before a component instance is unmounted."
    unmounted:
      description: "Called after a component instance is unmounted."
    activated:
      description: "Called when a kept-alive component is activated."
    deactivated:
      description: "Called when a kept-alive component is deactivated."
    errorCaptured:
      description: "Called when an error from a descendant component is captured."

Vuex to Pinia

lifecycle_methods:
  store_initialization:
    vuex: 'store'
    pinia: 'createPinia'
  state_definition:
    vuex: 'state'
    pinia: 'state'
  getters:
    vuex: 'getters'
    pinia: 'getters'
  actions:
    vuex: 'actions'
    pinia: 'actions'
  mutations:
    vuex: 'mutations'
    pinia: 'no direct equivalent (use actions or composition API)'
  modules:
    vuex: 'modules'
    pinia: 'no direct equivalent (use multiple stores)'
  plugins:
    vuex: 'plugins'
    pinia: 'plugins'
  state_access:
    vuex: 'this.$store.state'
    pinia: 'useStore().$state'
  commit:
    vuex: 'this.$store.commit'
    pinia: 'useStore().$patch'
  dispatch:
    vuex: 'this.$store.dispatch'
    pinia: 'useStore().$patch or direct action call'
  strict_mode:
    vuex: 'strict'
    pinia: 'no direct equivalent (use devtools or custom logic)'
  hot_module_replacement:
    vuex: 'store.hotUpdate'
    pinia: 'not needed (store is reactive by default)'

Directives

v-for adapter

<template>
  <div>
    <!-- Base case: if there are items, do the following -->
    <template v-if="hasItems">
      <!-- Render the first item using a scoped slot -->
      <slot :item="head"></slot>
      <!-- Recursively render the rest of the items if any -->
      <recursive-list v-if="hasTail" :items="tail">
        <!-- Pass the scoped slot through -->
        <template v-slot="slotProps">
          <slot :item="slotProps.item"></slot>
        </template>
      </recursive-list>
    </template>
  </div>
</template>

<script>
export default {
  name: "RecursiveList",
  props: {
    items: {
      type: Array,
      required: true,
    },
  },
  computed: {
    hasItems() {
      return this.items && this.items.length > 0;
    },
    head() {
      return this.items[0];
    },
    tail() {
      return this.items.slice(1);
    },
    hasTail() {
      return this.items.length > 1;
    },
  },
};
</script>
<template>
  <div>
    <recursive-list :items="myList">
      <!-- Define how to render each item via a scoped slot -->
      <template v-slot="{ item }">
        <div class="list-item">{{ item }}</div>
      </template>
    </recursive-list>
  </div>
</template>

<script>
import RecursiveList from './RecursiveList.vue';

export default {
  name: "App",
  components: { RecursiveList },
  data() {
    return {
      myList: ["Apple", "Banana", "Cherry", "Date"],
    };
  },
};
</script>

Vue2

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Vue with Vuex and Axios</title>
  <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vuex.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
</head>
<body>
  <div id="app">
    <dropdown-component></dropdown-component>
  </div>

  <script>
    // Vuex Store
    const store = new Vuex.Store({
      state: {
        options:  [
    { question: 'onboarding_sec_ques_born_city' },
    { question: 'onboarding_sec_ques_first_street' },
    { question: 'onboarding_sec_ques_oldest_cousin' },
    { question: 'onboarding_sec_ques_partner_meet' },
    { question: 'onboarding_sec_ques_first_pet' },
    { question: 'onboarding_sec_ques_childhood_hero' },
    { question: 'onboarding_sec_ques_fav_movie' },
    { question: 'onboarding_sec_ques_city_mom' },
    { question: 'onboarding_sec_ques_heirloom' },
    { question: 'onboarding_sec_ques_city_dad' },
  ],
        selectedOption: null,
        selectedOption2: null,
      },
      mutations: {
        setOptions(state, options) {
          state.options = options;
        },
        setSelectedOption(state, option) {
          state.selectedOption = option;
        },
        setSelectedOption2(state, option) {
          state.selectedOption2 = option;
        }
      },
      actions: {
        fetchOptions({ commit }) {
          const script = document.createElement('script');
          const callbackName = 'foo';
          
          // Define the callback function
          window[callbackName] = function(response) {
            const options = response.query.search.map(item => item.title);
            commit('setOptions', options);
          };

          // Set the JSONP URL
          const url = `https://en.wikipedia.org/w/api.php?action=query&format=json&list=search&srsearch=vue&origin=*&callback=${callbackName}`;
          
          // Set the script element's src to the JSONP URL
          script.src = url;
          
          // Append the script to the document
          document.body.appendChild(script);

          // Clean up the script and callback after execution
          script.onload = () => {
            document.body.removeChild(script);
            delete window[callbackName];
          };
          script.onerror = (error) => {
            console.error('Error fetching options:', error);
            document.body.removeChild(script);
            delete window[callbackName];
          };
        }
      }
    });

    // Vue Component
    Vue.component('dropdown-component', {
      template: `
        <div>
          <label for="wiki-select">Choose an article:</label>
          <select id="wiki-select" :value="selectedOption" @input="setSelectedOption($event.target.value)" ref="selectDropdown">
            <option v-for="option in options" :key="option.question" :value="option.question">{{ option.question }}</option>
          </select>
          <p>Selected option: {{ selectedOption }}</p>
          <label for="wiki-select2">Choose an article2:</label>
          <select id="wiki-select2" :value="selectedOption2" @input="setSelectedOption2($event.target.value)" ref="selectDropdown2">
            <option v-for="option in options" :key="option.question" :value="option.question">{{ option.question }}</option>
          </select>
          <p>Selected option2: {{ selectedOption2 }}</p>

        </div>
      `,
      computed: {
        ...Vuex.mapState(['options', 'selectedOption', 'selectedOption2']),
      },
      methods: {
        ...Vuex.mapMutations(['setSelectedOption','setSelectedOption2']),
        foo(selectedOption) {
          console.log('Selected option changed:', selectedOption);
        }
      },
      mounted() {
        //this.$store.dispatch('fetchOptions');
        this.$refs.selectDropdown.addEventListener('change', (event) => {
          this.foo(event.target.value);
        });
        this.$refs.selectDropdown2.addEventListener('change', (event) => {
          this.foo(event.target.value);
        });
      },
      beforeDestroy() {
        this.$refs.selectDropdown.removeEventListener('change', this.foo);
        this.$refs.selectDropdown2.removeEventListener('change', this.foo);
      }
    });

    // Vue Instance
    new Vue({
      el: '#app',
      store
    });
  </script>
</body>
</html>

Vue3

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Vue 3 with Pinia and Axios</title>
  <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
  <script src="https://unpkg.com/pinia@2/dist/pinia.iife.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
</head>
<body>
  <div id="app">
    <dropdown-component></dropdown-component>
  </div>

  <script>
    const { createApp, ref, onMounted, defineComponent } = Vue;
    const { createPinia, defineStore } = Pinia;

    // Define the Pinia store
    const useStore = defineStore('main', {
      state: () => ({
        options: [],
        selectedOption: null
      }),
      actions: {
        fetchOptions() {
          const script = document.createElement('script');
          const callbackName = 'foo';
          
          // Define the callback function
          window[callbackName] = (response) => {
            this.options = response.query.search.map(item => item.title);
          };

          // Set the JSONP URL
          const url = `https://en.wikipedia.org/w/api.php?action=query&format=json&list=search&srsearch=vue&origin=*&callback=${callbackName}`;
          
          // Set the script element's src to the JSONP URL
          script.src = url;
          
          // Append the script to the document
          document.body.appendChild(script);

          // Clean up the script and callback after execution
          script.onload = () => {
            document.body.removeChild(script);
            delete window[callbackName];
          };
          script.onerror = (error) => {
            console.error('Error fetching options:', error);
            document.body.removeChild(script);
            delete window[callbackName];
          };
        }
      }
    });

    // Define the Vue component
    const DropdownComponent = defineComponent({
      template: `
        <div>
          <label for="wiki-select">Choose an article:</label>
          <select id="wiki-select" v-model="selectedOption" ref="selectDropdown">
            <option v-for="option in options" :key="option" :value="option">{{ option }}</option>
          </select>
          <p>Selected option: {{ selectedOption }}</p>
        </div>
      `,
      setup() {
        const store = useStore();
        const selectDropdown = ref(null);

        // Define the foo method
        const foo = (selectedOption) => {
          console.log('Selected option changed:', selectedOption);
        };

        onMounted(() => {
          store.fetchOptions();
          selectDropdown.value.addEventListener('change', (event) => {
            foo(event.target.value);
          });
        });

        return {
          options: store.options,
          selectedOption: store.$state.selectedOption,
          selectDropdown
        };
      }
    });

    // Create the Vue app and Pinia store
    const app = createApp({
      components: {
        DropdownComponent
      }
    });

    const pinia = createPinia();
    app.use(pinia);
    app.mount('#app');
  </script>
</body>
</html>

Nuxt

/*
Scope:
    publicRuntimeConfig: These configuration values are accessible on both the server and the client. This means any value defined here can be accessed and used in your client-side code.

    privateRuntimeConfig: These configuration values are only accessible on the server side. They are not exposed to the client, making them suitable for sensitive data that should not be exposed to the client.

Security:

    publicRuntimeConfig: Since values here are available on the client side, they should not contain sensitive information such as API keys or secrets.

    privateRuntimeConfig: Safe to store sensitive information as these values are only accessible on the server.

Access:

    publicRuntimeConfig: You can access these values using this.$config in your Vue components and context.$config in the Nuxt context.

    privateRuntimeConfig: These values are accessible in server-side code, such as server middleware, API routes, and server-side Vue components.
*/

import axios from 'axios';

export default async () => {
  const { data } = await axios.get('https://api.example.com/config');

  return {
    publicRuntimeConfig: {
      apiBase: process.env.API_BASE || data.apiBase,
    },
    privateRuntimeConfig: {
      apiSecret: process.env.API_SECRET || data.apiSecret,
    },
  };
};

Vue.js

Vue3

JSFiddle

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Vue 3, Pinia, Axios, and Vue Router</title>
    <!-- Load Vue 3 via CDN -->
    <script src="https://unpkg.com/vue@next"></script>
    <!-- Load Vue Router via CDN -->
    <script src="https://unpkg.com/vue-router@next"></script>
    <!-- Load Pinia via CDN -->
    <script src="https://unpkg.com/pinia@next"></script>
    <!-- Load Axios via CDN -->
    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
</head>
<body>
    <div id="app"></div>
    <!-- Your custom JavaScript -->
    <script type="module">
        // Create a Pinia store with a variable foo
        import { createPinia, defineStore } from 'https://unpkg.com/pinia@next';
        import { createRouter, createWebHistory } from 'https://unpkg.com/vue-router@next';
        import { createApp, ref } from 'https://unpkg.com/vue@next';

        const useStore = defineStore('main', {
            state: () => ({
                foo: 'Hello from Pinia store!'
            })
        });

        // Composition API hook with a variable bar
        function useBar() {
            const bar = ref('Hello from Composition API hook!');
            return { bar };
        }

        // Define Vue components
        const HomeComponent = {
            template: '<div>Home Component</div>'
        };
        
        const AboutComponent = {
            template: '<div>About Component</div>'
        };

        // Set up Vue Router
        const routes = [
            { path: '/', component: HomeComponent },
            { path: '/about', component: AboutComponent }
        ];
        
        const router = createRouter({
            history: createWebHistory(),
            routes
        });

        // Create Vue app
        const app = createApp({
            setup() {
                const store = useStore();
                const { bar } = useBar();

                return { store, bar };
            },
            template: `
                <div>
                    <nav>
                        <router-link to="/">Home</router-link>
                        <router-link to="/about">About</router-link>
                    </nav>
                    <router-view></router-view>
                    <h1>{{ store.foo }}</h1>
                    <h1>{{ bar }}</h1>
                </div>
            `
        });

        // Use Pinia and Router
        app.use(createPinia());
        app.use(router);

        // Mount app
        app.mount('#app');
    </script>
</body>
</html>

Vue2

JSFiddle

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Vue 2, Vue Router, Vuex, and Axios</title>
    <!-- Load Vue 2 via CDN -->
    <script src="https://cdn.jsdelivr.net/npm/vue@2"></script>
    <!-- Load Vue Router via CDN -->
    <script src="https://cdn.jsdelivr.net/npm/vue-router@3"></script>
    <!-- Load Vuex via CDN -->
    <script src="https://cdn.jsdelivr.net/npm/vuex@3"></script>
    <!-- Load Axios via CDN -->
    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
</head>
<body>
    <div id="app"></div>
    <!-- Your custom JavaScript -->
    <script>
        // Create a Vuex store
        const store = new Vuex.Store({
            state: {
                foo: 'Hello from Vuex store!'
            },
            mutations: {
                setFoo(state, newFoo) {
                    state.foo = newFoo;
                }
            },
            actions: {
                fetchFoo({ commit }) {
                    axios.get('https://jsonplaceholder.typicode.com/posts/1')
                        .then(response => {
                            commit('setFoo', response.data.title);
                        });
                }
            }
        });

        // Define Vue components
        const HomeComponent = {
            template: '<div>Home Component</div>'
        };
        
        const AboutComponent = {
            template: '<div>About Component</div>'
        };

        // Set up Vue Router
        const routes = [
            { path: '/', component: HomeComponent },
            { path: '/about', component: AboutComponent }
        ];
        
        const router = new VueRouter({
            routes
        });

        // Create Vue app
        new Vue({
            el: '#app',
            store,
            router,
            data() {
                return {
                    bar: 'Hello from Composition API hook!'
                };
            },
            template: `
                <div>
                    <nav>
                        <router-link to="/">Home</router-link>
                        <router-link to="/about">About</router-link>
                    </nav>
                    <router-view></router-view>
                    <h1>{{ $store.state.foo }}</h1>
                    <h1>{{ bar }}</h1>
                </div>
            `,
            created() {
                this.$store.dispatch('fetchFoo');
            }
        });
    </script>
</body>
</html>

Github Issue Details

documentation:
  - name: "GitHub Issue - Extract window.__NUXT__ to <script>"
    description: "Discusses how to extract `window.__NUXT__` to a `<script>` tag for SEO purposes."
    url: "https://github.com/nuxt/nuxt/issues/8548"
    
  - name: "GitHub Issue - Remove window.__NUXT__ once app initialises"
    description: "Discusses the use of `window.__NUXT__` for backward compatibility and its removal in future versions."
    url: "https://github.com/nuxt/nuxt/issues/25336"

  - name: "Nuxt Documentation - The Context"
    description: "Explains the context object, which includes `window.__NUXT__`."
    url: "https://v2.nuxt.com/docs/internals-glossary/context/"

Window Object Keys

Framework Specific Object Literals:

Framework Window Object Key(s)
Nuxt __nuxt__
Vue 2 Vue, Vuex
Vue 3 Vue, Vuex
Angular.js $window
Angular $window, ng, ngCore
Ember Em, Ember
Svelte svelte, Svelte
Solid.js solid
Mithril.js m, Mithril
Backbone.js Backbone, _, $

Backbone Modernization

Modals

Bootstrap

Accessibility Requirement Bootstrap Support Compliance Gap Solution for WCAG Compliance
Keyboard Navigation ✅ Basic support ⚠️ Needs manual trapping Ensure focus remains inside modal, preventing tabbing to background elements.
ARIA Attributes ✅ Implemented ✅ Fully compliant No gaps—Bootstrap correctly uses role="dialog" and aria-labelledby.
Focus Management ⚠️ Partial ⚠️ Missing restoration Restore focus to the triggering element after modal closes.
Color Contrast ⚠️ May vary by theme ⚠️ Not always WCAG 2.1-compliant Ensure contrast ratio meets 4.5:1 for text and 3:1 for UI components.
Screen Reader Support ✅ Supported ⚠️ Labeling improvement needed Ensure descriptive labeling via aria-describedby for better context.
Esc Key Behavior ✅ Works by default ✅ Fully compliant No gaps—Bootstrap allows users to close the modal via Esc.
Resizable Text Support ⚠️ Depends on CSS ⚠️ May cause layout issues Use relative units (em, rem) instead of fixed pixel sizes to support text resizing.

Nuxt UI

Accessibility Requirement Nuxt UI Support Compliance Gap Solution for WCAG Compliance
Keyboard Navigation ✅ Basic support ⚠️ Needs manual trapping Ensure focus remains inside modal, preventing tabbing to background elements.
ARIA Attributes ✅ Implemented ✅ Fully compliant No gaps—Nuxt UI correctly uses role="dialog" and aria-labelledby.
Focus Management ⚠️ Partial ⚠️ Missing restoration Restore focus to the triggering element after modal closes.
Color Contrast ⚠️ May vary by theme ⚠️ Not always WCAG 2.1-compliant Ensure contrast ratio meets 4.5:1 for text and 3:1 for UI components.
Screen Reader Support ✅ Supported ⚠️ Labeling improvement needed Ensure descriptive labeling via aria-describedby for better screen reader support.
Esc Key Behavior ✅ Works by default ✅ Fully compliant No gaps—Nuxt UI allows users to close the modal via Esc.
Resizable Text Support ⚠️ Depends on CSS ⚠️ May cause layout issues Use relative units (em, rem) instead of fixed pixel sizes to support text resizing.
Hash-Based Routing ⚠️ Limited ⚠️ Requires manual integration Implement Vue Router hooks to update the URL when modals open/close.

Buefy

Accessibility Requirement Buefy Support Compliance Gap Solution for WCAG Compliance
Keyboard Navigation ✅ Basic support ⚠️ Needs manual trapping Ensure focus remains inside modal, preventing tabbing to background elements.
ARIA Attributes ✅ Implemented ✅ Fully compliant No gaps—Buefy correctly uses role="dialog" and aria-labelledby.
Focus Management ⚠️ Partial ⚠️ Missing restoration Restore focus to the triggering element after modal closes.
Color Contrast ⚠️ May vary by theme ⚠️ Not always WCAG 2.1-compliant Ensure contrast ratio meets 4.5:1 for text and 3:1 for UI components.
Screen Reader Support ✅ Supported ⚠️ Labeling improvement needed Ensure descriptive labeling via aria-describedby for better screen reader support.
Esc Key Behavior ✅ Works by default ✅ Fully compliant No gaps—Buefy allows users to close the modal via Esc.
Resizable Text Support ⚠️ Depends on CSS ⚠️ May cause layout issues Use relative units (em, rem) instead of fixed pixel sizes to support text resizing.
Hash-Based Routing ❌ Not built-in ⚠️ Requires manual integration Implement Vue Router hooks to update the URL when modals open/close.

Universal AJAX

Universal Routers

Library First Release Date Latest Release Date Author License GitHub Stars GitHub URL NPM URL
Remix Router 2019-10-25 2023-07-15 remix‑run MIT 55k GitHub npm
Navigo 2013-05-14 2021-04-01 krasimir MIT 2.8k GitHub npm

DOM Wrappers

event_bubbling_issues:
  Ember:
    - description: "Event bubbling issues with components not propagating events as expected."
      url: https://stackoverflow.com/questions/19776520/bubble-up-events-from-ember-component
    - description: "Stopping bubbling/propagation in Ember 2.x causing unexpected behavior."
      url: https://stackoverflow.com/questions/48713114/stopping-bubbling-propagation-in-ember-2-x
    - description: "Inner actions bubbling to outer link-to helpers unexpectedly."
      url: https://stackoverflow.com/questions/35157428/how-to-stop-the-inner-action-from-bubbling-to-the-outer-link-to-helper
    - description: "View events bubbling to actions in Ember."
      url: https://github.com/emberjs/ember.js/issues/10040

  Vue2:
    - description: "Custom events not bubbling naturally in Vue 2."
      url: https://stackoverflow.com/questions/41993508/vuejs-bubbling-custom-events
    - description: "Preventing event bubbling in Vue 2 using modifiers like `.stop`."
      url: https://stackoverflow.com/questions/48798216/prevent-event-bubbling-in-vue
    - description: "Challenges with bubbling events on component chains."
      url: https://stackoverflow.com/questions/42029150/how-to-bubble-events-on-a-component-subcomponent-chain-with-vue-js-2

  Vue3:
    - description: "Custom events do not propagate up the component chain by default."
      url: https://stackoverflow.com/questions/64613446/do-custom-events-propagate-up-the-component-chain-in-vue-3
    - description: "Issues with event bubbling in SVG elements within Vue 3 components."
      url: https://www.devgem.io/posts/handling-click-events-in-vue-3-solving-svg-click-event-bubbling
    - description: "Opt-in event bubbling discussion for Vue 3."
      url: https://github.com/vuejs/rfcs/discussions/581

  Svelte:
    - description: "Event bubbling issues with wrong order of event handling."
      url: https://github.com/sveltejs/svelte/issues/14787
    - description: "Event bubbling not working as expected in nested components."
      url: https://github.com/sveltejs/svelte/issues/149
    - description: "Event bubbling order issues in Svelte 5."
      url: https://github.com/sveltejs/svelte/issues/14786

  Solid.js:
    - description: "stopPropagation on parent elements affecting child event handling."
      url: https://github.com/solidjs/solid/issues/1278
    - description: "Event delegation and bubbling behavior in Solid.js."
      url: https://docs.solidjs.com/reference/jsx-attributes/on_
    - description: "Event handlers and bubbling behavior in Solid.js."
      url: https://docs.solidjs.com/concepts/components/event-handlers

  Lit.js:
    - description: "LitElement prevents event bubbling on polyfilled browsers."
      url: https://github.com/lit/lit-element/issues/658
    - description: "Change events not bubbling outside Shadow DOM in Lit."
      url: https://github.com/lit/lit-element/issues/922
    - description: "Declarative event listeners and bubbling in Lit."
      url: https://lit.dev/docs/components/events/

DOM Events

<!-- Vue 1-->
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Vue 1 Select Binding with v-bind</title>
  <script src="https://cdn.jsdelivr.net/vue/1.0.28/vue.min.js"></script>
</head>
<body>
  <div id="app">
    <select :value="selectedOption" @change="updateSelectedOption($event)">
      <option v-for="option in options" :value="option">{{ option }}</option>
    </select>
    <p>Selected option: {{ selectedOption }}</p>
  </div>

  <script>
    new Vue({
      el: '#app',
      data: {
        options: ['Option 1', 'Option 2', 'Option 3'],
        selectedOption: ''
      },
      methods: {
        updateSelectedOption(event) {
          this.selectedOption = event.target.value;
        }
      }
    });
  </script>
</body>
</html>
<!-- Vue2 -->
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Vue 2 Select Binding</title>
  <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</head>
<body>
  <div id="app">
    <select v-model="selectedOption" ref="selectElement">
      <option v-for="option in options" :key="option" :value="option">{{ option }}</option>
    </select>
    <p>Selected option: {{ selectedOption }}</p>
  </div>

  <script>
    new Vue({
      el: '#app',
      data: {
        options: ['Option 1', 'Option 2', 'Option 3'],
        selectedOption: ''
      },
      mounted() {
        this.$refs.selectElement.addEventListener('input', this.onInputChange);
      },
      methods: {
        onInputChange(event) {
          this.selectedOption = event.target.value;
        }
      }
    });
  </script>
</body>
</html>
<!--Options API-->
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Vue 3 Select Binding</title>
  <script src="https://unpkg.com/vue@next"></script>
</head>
<body>
  <div id="app">
    <select v-model="selectedOption" ref="selectElement">
      <option v-for="option in options" :key="option" :value="option">{{ option }}</option>
    </select>
    <p>Selected option: {{ selectedOption }}</p>
  </div>

  <script>
    const app = Vue.createApp({
      data() {
        return {
          options: ['Option 1', 'Option 2', 'Option 3'],
          selectedOption: ''
        };
      },
      mounted() {
        this.$refs.selectElement.addEventListener('input', this.onInputChange);
      },
      methods: {
        onInputChange(event) {
          this.selectedOption = event.target.value;
        }
      }
    }).mount('#app');
  </script>
</body>
</html>
<!-- jQuery -->
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>jQuery Select Binding</title>
  <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
  <select id="selectElement">
    <option value="Option 1">Option 1</option>
    <option value="Option 2">Option 2</option>
    <option value="Option 3">Option 3</option>
  </select>
  <p id="selectedOption">Selected option: </p>

  <script>
    $(document).ready(function() {
      $('#selectElement').on('input', function() {
        $('#selectedOption').text('Selected option: ' + $(this).val());
      });
    });
  </script>
</body>
</html>
<!--Composition API-->
<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Vue 3 Select Binding (Composition API)</title>
  <script src="https://unpkg.com/vue@next"></script>
</head>
<body>
  <div id="app">
    <select ref="selectElement">
      <option v-for="option in options" :key="option" :value="option">{{ option }}</option>
    </select>
    <p>Selected option: {{ selectedOption }}</p>
  </div>

  <script>
    const { ref, onMounted } = Vue;

    const app = Vue.createApp({
      setup() {
        const options = ref(['Option 1', 'Option 2', 'Option 3']);
        const selectedOption = ref('');
        const selectElement = ref(null);

        onMounted(() => {
          selectElement.value.addEventListener('input', onInputChange);
        });

        const onInputChange = (event) => {
          selectedOption.value = event.target.value;
        };

        return { options, selectedOption, selectElement };
      }
    }).mount('#app');
  </script>
</body>
</html>

URLSearchParams Method Definition and Test

jQuery

Plain JS

function getQueryParam(key) {
    const urlParams = new URLSearchParams(window.location.search);
    return urlParams.get(key);
}

jQuery Usage

$(document).ready(function() {
    // Store the function object
    $(document).data('getQueryParam', getQueryParam);

    // Retrieve and use the function
    const getQueryParam = $(document).data('getQueryParam');
    const value = getQueryParam('foo');
    
    // Assert the query parameter
    if (value === 'bar') {
        console.log("The query parameter 'foo' has the value 'bar'");
    } else {
        console.log("The query parameter 'foo' does not have the value 'bar'");
    }
});

JQuery QUnit Test

QUnit.test("Query string contains key 'foo' with value 'bar'", function(assert) { 
    const getQueryParam = $(document).data('getQueryParam'); 
    const value = getQueryParam('foo'); 
    assert.equal(value, 'bar', "The query parameter 'foo' should have the value 'bar'"); });

Angular

Angular Service

// query-params.service.ts
import { Injectable } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

@Injectable({
  providedIn: 'root',
})
export class QueryParamsService {
  constructor(private route: ActivatedRoute) {}

  getQueryParam(key: string): string | null {
    return this.route.snapshot.queryParamMap.get(key);
  }
}

Jest Test

// query-params.service.spec.ts
import { Injector } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { QueryParamsService } from './query-params.service';

describe('QueryParamsService', () => {
  let injector: Injector;
  let service: QueryParamsService;

  beforeEach(() => {
    injector = Injector.create({
      providers: [
        QueryParamsService,
        {
          provide: ActivatedRoute,
          useValue: {
            snapshot: {
              queryParamMap: {
                get: (key: string) => (key === 'foo' ? 'bar' : null),
              },
            },
          },
        },
      ],
    });
    service = injector.get(QueryParamsService);
  });

  it("should have query parameter 'foo' with value 'bar'", () => {
    const value = service.getQueryParam('foo');
    expect(value).toBe('bar');
  });
});

React to Vue

Porting joda-time to pyoda-time

https://github.com/JodaOrg/joda-time/blob/main/src/test/java/org/joda/time/TestMinutes.java

https://github.com/chrisimcevoy/pyoda-time/tree/main/tests

Python Mapping for Vue2 to Vue3

import os

# Mapping of Vue 2 syntax to Vue 3 syntax
migration_dict = {
    'data() {': 'setup() {\n    const state = reactive({\n',
    'methods: {': 'methods = {\n',
    'this.': 'state.',
    '};\n  },': '};\n\n    return { ...toRefs(state), ...methods };\n  }',
    'export default {': 'import { reactive, toRefs } from \'vue\';\n\nexport default {'
}

def migrate_vue2_to_vue3(file_path):
    with open(file_path, 'r', encoding='utf-8') as file:
        vue2_content = file.read()

    vue3_content = vue2_content
    for vue2_syntax, vue3_syntax in migration_dict.items():
        vue3_content = vue3_content.replace(vue2_syntax, vue3_syntax)

    vue3_content = f"<template>\n" + \
                   vue3_content.split('<template>')[1].split('</template>')[0] + \
                   f"\n</template>\n" + \
                   f"<script>\n" + \
                   vue3_content.split('<script>')[1].split('</script>')[0] + \
                   f"\n</script>\n" + \
                   f"<style scoped>" + \
                   vue3_content.split('<style scoped>')[1].split('</style>')[0] + \
                   f"</style>"

    output_file_path = os.path.join(os.path.dirname(file_path), 'Counter-vue3.vue')
    with open(output_file_path, 'w', encoding='utf-8') as file:
        file.write(vue3_content)

    print(f"Migrated component saved to: {output_file_path}")

# Usage Example
file_path = os.path.join(os.getcwd(), 'Counter.vue')
migrate_vue2_to_vue3(file_path)

Test Util and elements

Component

// components/SelectComponent.vue
<template>
  <div>
    <label for="country">Choose a country:</label>
    <select id="country" v-model="selectedCountry">
      <option value="US">United States</option>
      <option value="CA">Canada</option>
      <option value="MX">Mexico</option>
    </select>
    <p>Selected country: {{ selectedCountry }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      selectedCountry: 'US',
    };
  },
};
</script>

<style scoped>
select {
  margin-top: 10px;
}
</style>

Test File

// tests/unit/SelectComponent.spec.js
import { mount } from '@vue/test-utils';
import SelectComponent from '@/components/SelectComponent.vue';

describe('SelectComponent', () => {
  test('selects a country', async () => {
    const wrapper = mount(SelectComponent);

    // Find the select element
    const select = wrapper.find('select');

    // Simulate changing the select value
    await select.setValue('CA');

    // Assert the selected country is updated
    expect(wrapper.vm.selectedCountry).toBe('CA');
    expect(wrapper.find('p').text()).toBe('Selected country: CA');
  });
});

Actor Model APIs

Framework Actor Model Support Templating Support TypeScript Required TypeScript Optional Runs via CDN GitHub URL
Hyperapp yes yes (JSX templating) no yes yes https://github.com/jorgebucaran/hyperapp
Cycle.js yes yes (JSX or hyperscript) no yes yes https://github.com/cyclejs/cyclejs
XState yes (actors, spawn, messaging) yes (Svelte, Vue, vanilla DOM) no yes yes https://github.com/statelyai/xstate

Cookie Wrapper APIs

Framework Cookie API Last Release Date Author Documentation Notable Forks
AngularJS $cookies service April 7, 2022 Miško Hevery (Google) AngularJS Cookie API -
Dojo Toolkit dojo/cookie module January 20, 2021 Alex Russell, Dylan Schiemann Dojo Cookie API -
Ext JS (Sencha) Ext.util.Cookies class May 21, 2024 Jack Slocum Ext JS Cookie API bjornharrtell/extjs
YUI YAHOO.util.Cookie utility September 2014 Yahoo! YUI Cookie API yui/yui3, yuiphp/yui
SproutCore SC.Cookie class February 2, 2015 Charles Jolley (Sproutit, Apple Inc.) SproutCore Cookie API -
MooTools Cookie utility July 18, 2008 Valerio Proietti MooTools Cookie API -
AlloyUI A.Cookie utility October 2015 Liferay AlloyUI Cookie API -
Apache Royale LSO (Local Shared Objects) Ongoing Apache Software Foundation Apache Royale LSO Documentation -

Window and Navigator Events

SolidJS

import { createSignal, createEffect, onCleanup } from "solid-js";

function App() {
  // Reactive signals for window width and online status
  const [windowWidth, setWindowWidth] = createSignal(window.innerWidth);
  const [isOnline, setIsOnline] = createSignal(navigator.onLine);

  // Named functions for handling events
  function handleResizeEvent(event) {
    setWindowWidth(window.innerWidth); // Using the window directly as it updates dynamically
  }

  function handleOnlineEvent(event) {
    setIsOnline(true);
  }

  function handleOfflineEvent(event) {
    setIsOnline(false);
  }

  // Effect for tracking window resize
  function trackWindowResize() {
    window.addEventListener("resize", handleResizeEvent);
    onCleanup(removeWindowResizeTracker);
  }

  function removeWindowResizeTracker() {
    window.removeEventListener("resize", handleResizeEvent);
  }

  createEffect(trackWindowResize);

  // Effect for tracking online status
  function trackOnlineStatus() {
    window.addEventListener("online", handleOnlineEvent);
    window.addEventListener("offline", handleOfflineEvent);
    onCleanup(removeOnlineStatusTracker);
  }

  function removeOnlineStatusTracker() {
    window.removeEventListener("online", handleOnlineEvent);
    window.removeEventListener("offline", handleOfflineEvent);
  }

  createEffect(trackOnlineStatus);

  return (
    <div>
      <h1>Fine-Grained Reactivity Example</h1>
      <p>Window width: {windowWidth()}px</p>
      <p>Status: {isOnline() ? "Online" : "Offline"}</p>
    </div>
  );
}

export default App;

Template XSS

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Security Risks in Multiple Frameworks</title>
  <!-- Reference: https://differ.blog/p/fortifying-your-next-js-frontend-lessons-learned-in-a-world-730ada -->
  <!-- CDN Links for Frameworks -->
  <script src="https://cdn.jsdelivr.net/npm/react/umd/react.development.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/react-dom/umd/react-dom.development.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.8.2/angular.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/@angular/[email protected]/bundles/core.umd.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/svelte/compiler.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/solid-js/dist/solid.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/3.2.37/vue.global.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/ember-source/dist/ember.prod.js"></script>
</head>
<body>
  <h1>Security Risks Demonstration</h1>

  <!-- React -->
  <div id="react"></div>
  <script>
    const ReactRoot = document.getElementById("react");
    const userInput = "<script>alert('React XSS')</script>";
    ReactDOM.render(
      React.createElement("div", null, userInput), // Vulnerable to XSS
      ReactRoot
    );
    // Related Issue: https://github.com/facebook/react/issues/3473
  </script>

  <!-- AngularJS -->
  <div ng-app>
    <div ng-bind-html="'<script>alert(`AngularJS XSS`)</script>'"></div>
    <!-- Related Issue: https://github.com/angular/angular.js/issues/1740 -->
  </div>

  <!-- Angular -->
  <script>
    // Angular setup and XSS example would require a full application bootstrap
    console.warn("Angular requires a full app bootstrap. Simulating here.");
    // Related Issue: https://angular.io/guide/security#security-contexts
  </script>

  <!-- Svelte -->
  <script>
    const svelteApp = document.createElement("div");
    document.body.appendChild(svelteApp);
    svelteApp.innerHTML = "<script>alert('Svelte XSS')</script>"; // Vulnerable
    // Related Issue: https://github.com/sveltejs/svelte/issues/3012
  </script>

  <!-- Solid.js -->
  <div id="solid"></div>
  <script>
    Solid.render(
      () => "<script>alert('Solid.js XSS')</script>", // Vulnerable
      document.getElementById("solid")
    );
    // Related Issue: https://github.com/solidjs/solid/issues/612
  </script>

  <!-- Vue 3 -->
  <div id="vue"></div>
  <script>
    const app = Vue.createApp({
      data() {
        return { content: "<script>alert('Vue 3 XSS')</script>" }; // Vulnerable
      },
      template: '<div v-html="content"></div>',
    });
    app.mount("#vue");
    // Related Issue: https://github.com/vuejs/core/issues/8985
  </script>

  <!-- Ember -->
  <div id="ember"></div>
  <script>
    const emberApp = document.createElement("div");
    emberApp.innerHTML = "<script>alert('Ember XSS')</script>"; // Vulnerable
    document.body.appendChild(emberApp);
    // Related Issue: https://github.com/emberjs/ember.js/issues/18755
  </script>
</body>
</html>

window child objects

React

  • When React is included through a <script> tag, it attaches React and ReactDOM to the global window object.
    • You can directly access window.React and window.ReactDOM in the browser.
    • React's internal APIs (such as ReactElement.createElement, traverseAllChildren, or ReactComponent.unmount) are not exposed globally.
    • They remain hidden inside the bundled code.
  • To experiment with monkeypatching in this setup, the general approach is:
    • Wait until window.React and window.ReactDOM are available.
    • Identify internal functions by inspecting the React source or build artifacts.
    • Attach those internals to a public namespace on window.React (for example, React.__INTERNALS).

DOM ID to Store Mapping

Pinia

Store

import { defineStore } from 'pinia';

export const useDataStore = defineStore('dataStore', {
  state: () => ({
    elementData: {}, // Acts like the `.data()` storage
  }),
  actions: {
    setData(id, key, value) {
      if (!this.elementData[id]) {
        this.elementData[id] = {};
      }
      this.elementData[id][key] = value;
    },
    getData(id, key) {
      return this.elementData[id]?.[key];
    },
    removeData(id, key) {
      if (this.elementData[id]) {
        delete this.elementData[id][key];
        // Cleanup if no more keys
        if (Object.keys(this.elementData[id]).length === 0) {
          delete this.elementData[id];
        }
      }
    },
  },
});

Vue Component

<template>
  <div id="myElement" @click="addData">Click me!</div>
  <div id="anotherElement" @click="getData">Check Data!</div>
</template>

<script>
import { useDataStore } from '@/stores/dataStore';

export default {
  setup() {
    const store = useDataStore();

    const addData = () => {
      // Simulates storing data on the DOM element
      store.setData('myElement', 'exampleKey', 'exampleValue');
    };

    const getData = () => {
      const value = store.getData('myElement', 'exampleKey');
      console.log(value); // Logs "exampleValue"
    };

    return { addData, getData };
  },
};
</script>

CSS StyleManager OOP

tests:
  - name: "StyleManager Initialization Test"
    url: "https://github.com/apache/royale-asjs/blob/master/frameworks/projects/royale/test/unit/css/StyleManagerInitializationTests.as"
  - name: "StyleManager Registration Test"
    url: "https://github.com/apache/royale-asjs/blob/master/frameworks/projects/royale/test/unit/css/StyleManagerRegistrationTests.as"
  - name: "StyleManager Style Resolution Test"
    url: "https://github.com/apache/royale-asjs/blob/master/frameworks/projects/royale/test/unit/css/CSSStyleResolutionTests.as"
  - name: "CSS File Loading Test"
    url: "https://github.com/apache/royale-asjs/blob/master/frameworks/projects/royale/test/unit/css/CSSFileLoadingTests.as"
  - name: "CSS Parsing Test"
    url: "https://github.com/apache/royale-asjs/blob/master/frameworks/projects/royale/test/unit/css/CSSParserTests.as"
  - name: "CSS Inheritance Test"
    url: "https://github.com/apache/royale-asjs/blob/master/frameworks/projects/royale/test/unit/css/CSSInheritanceTests.as"
  - name: "Style Declaration Merging Test"
    url: "https://github.com/apache/royale-asjs/blob/master/frameworks/projects/royale/test/unit/css/StyleDeclarationMergingTests.as"

CMS Pros and Cons

CRM Documentation Generator Features Software License API Doc URL Most Recent Release Date Programming Language(s) Webhook API Doc URL
CiviCRM Custom API-based solutions Typically requires integration with third-party tools or custom scripts for document automation, as native solutions are limited. Open-source (AGPL) CiviCRM API Docs April 2025 PHP CiviCRM Webhooks
Odoo Odoo Studio & API-based solutions Provides built-in document generation via Odoo Studio, with additional customization possible through API integrations. Open-source (LGPL) Odoo API Docs April 2025 Python Odoo Webhooks
Umbraco Pipeline CRM An open-source CRM module within Umbraco's back-office, tracking opportunities, tasks, and customer interactions. Open-source (MIT) Umbraco API Docs April 2025 C# (.NET) Umbraco Webhooks
Liferay CMS Liferay DXP CMS Provides content management, document storage, and workflow automation, with AI-powered content creation and analytics. Proprietary (Enterprise) Liferay API Docs April 2025 Java Liferay Webhooks

From Wordpress

Static Site

Node.js

articles:
  - title: "Why we migrated from WordPress to NodeJS"
    url: "https://polyfable.com/articles/wordpress-to-nodejs/"
    summary: >
      This blog post details the decision to migrate from WordPress to Node.js, emphasizing performance improvements,
      scalability concerns, and the difficulties of maintaining a plugin-heavy WordPress site. The authors describe their
      transition to a more modern JavaScript-based stack that allows for greater flexibility and speed in their web application.

  - title: "Moving from WordPress to Node.js for scalability"
    url: "https://dev.to/someauthor/migrating-from-wordpress-to-nodejs-for-performance-3abc"
    summary: >
      The article explores the technical reasons behind switching from WordPress to Node.js, particularly focusing on
      how Node.js provided better concurrency, API management, and optimized handling of large-scale traffic. The author
      shares insights into rewriting a WordPress application into a JavaScript-based solution for improved efficiency.

Dynamic Vue3 Component in Nuxt2

Step Details
1. Install Vue 3 Run npm install vue@next to install Vue 3 separately without interfering with Nuxt 2.
2. Create Vue 3 Component Define a standalone Vue 3 component using createApp() and h(). Example:
```js
import { createApp, h } from 'vue';
const MyVue3Component = { render() { return h('div', 'Vue 3 inside Nuxt 2!'); }};
export default MyVue3Component;
```
3. Mount Vue 3 in Nuxt 2 Use onMounted() to dynamically mount the Vue 3 component inside a Vue 2 page. Example:
```vue
<script>
import { onMounted, ref } from '@vue/composition-api';
import { createApp } from 'vue'; import MyVue3Component from '~/components/myVue3Component.js';
export default { setup() { const vue3Container = ref(null);
onMounted(() => createApp(MyVue3Component).mount(vue3Container.value)); return { vue3Container }; }};
</script>
```
4. Install Composition API Since Vue 3 relies on Composition API, install @vue/composition-api: npm install @vue/composition-api
5. Register Composition API Add Vue.use(VueCompositionAPI); in plugins/composition-api.js to enable Vue 3 features in Nuxt 2.
Key Considerations - Vue 3 components don’t work natively in Nuxt 2.
- Dynamic mounting is required to inject Vue 3 into Vue 2 pages.
- Vue 3 features like Composition API require compatibility layers.
Resources Links
Nuxt Vue.js Development Guide Nuxt Docs
Using Vue 3 with Nuxt Guide

Nuxt 2 to Nuxt 3 Migration Plan

Framework Maturity Models

maturity_models:
  - organization: "NIST"
    maturity_model: "Cybersecurity Framework Maturity Model"
    topic: "Security"
    url: "https://www.nist.gov/cyberframework"
    summary: "Provides a cybersecurity framework to help organizations assess and mature their security controls and risk management practices."

  - organization: "TMMi Foundation"
    maturity_model: "Test Maturity Model integration (TMMi)"
    topic: "Testability"
    url: "https://www.tmmi.org/"
    summary: "Offers a structured model to evaluate and improve the maturity of software testing processes within organizations."

  - organization: "CMMI Institute"
    maturity_model: "Capability Maturity Model Integration (CMMI)"
    topic: "Compliance, Testability, Process Improvement"
    url: "https://cmmiinstitute.com/"
    summary: "Provides comprehensive models for process improvement that address areas such as compliance, quality assurance, and test maturity within software and process development."

  - organization: "DAMA International"
    maturity_model: "Data Management Maturity (DMM) Model"
    topic: "Data Governance"
    url: "https://www.dama.org/"
    summary: "Delivers guidelines and maturity models to help organizations assess and advance their data governance practices, ensuring data quality and effective management."

  - organization: "EDM Council"
    maturity_model: "Data Management Capability Assessment Model (DCAM)"
    topic: "Data Governance, Compliance"
    url: "https://edmcouncil.org/"
    summary: "Focuses on best practices for data management by providing a capability model that assists organizations in evaluating and enhancing their data governance and compliance frameworks."

  - organization: "The Open Group"
    maturity_model: "TOGAF Maturity Model"
    topic: "Interoperability, Portability"
    url: "https://www.opengroup.org/"
    summary: "Through frameworks like TOGAF, The Open Group offers maturity models that guide organizations in improving enterprise architecture, with a focus on achieving better interoperability and portability among systems."

  - organization: "W3C"
  - maturity_model: "Accessibility Maturity Model"
  - topic: "Accessibility"
  - url: "https://www.w3.org/TR/maturity-model/"
  - summary: "Digital accessibility is a human right"

Nuxt Bridge: Installing Composition API

installation:
  remove_legacy:
    command: "npm uninstall @vue/composition-api @nuxtjs/composition-api"
    description: "Removes outdated Composition API dependencies that were used in Nuxt 2."

  enable_composition_api:
    file: "nuxt.config.js"
    settings:
      bridge:
        capi: true  # Enables Composition API in Nuxt Bridge
        nitro: false # Set to true if transitioning to Nuxt 3's Nitro engine
    description: "Activates Composition API inside Nuxt Bridge configuration."

  remove_manual_plugin:
    file: "plugins/composition-api.js"
    remove_code: |
      import Vue from 'vue';
      import VueCompositionAPI from '@vue/composition-api';
      Vue.use(VueCompositionAPI);
    description: "Nuxt Bridge automatically imports Composition API, so manual plugin registration is unnecessary."

  update_imports:
    before: |
      import { ref, computed, useRoute } from '@nuxtjs/composition-api';
    after: |
      import { ref, computed } from 'vue';
      import { useRoute } from '#imports';
    description: "Replaces outdated imports with Nuxt Bridge-compatible ones."

  removed_composables:
    list:
      - name: "withContext"
        alternative: "No replacement"
      - name: "useStatic"
        alternative: "No replacement (consider fetching data dynamically)"
      - name: "reqRef / reqSsrRef"
        alternative: "Use 'ssrRef' instead"
    description: "Some Composition API functions from Nuxt 2 are unavailable in Nuxt Bridge."

Browser Specific HTML

Framework Specific HTML

CSSOM and HandleEvent

HandleEvent

Data Binder

class DataBinder {
  constructor(model) {
    this.model = model;
  }

  handleEvent(event) {
    const el = event.target;
    const key = el.getAttribute('data-bind');
    if (!key) return;

    if (event.type === 'input') {
      this.model[key] = el.value;
    } else if (event.type === 'change') {
      this.model[key] = el.value;
    }

    // Optional: reflect model back to DOM
    document.querySelectorAll(`[data-bind="${key}"]`).forEach(node => {
      if (node !== el) node.value = this.model[key];
    });
  }
}
<input data-bind="username" type="text" />
<input data-bind="username" type="textarea" />
<script>
const model = { username: '' };
const binder = new DataBinder(model);

document.querySelectorAll('[data-bind]').forEach(el => {
  el.addEventListener('input', binder);
  el.addEventListener('change', binder);
});
</script>

Click Events

handleEvent_examples:
  description: >
    Usage of the handleEvent method for click events across React, Vue, and jQuery.
    Demonstrates how to use an EventListener with an object that defines a handleEvent method.

  react:
    setup: useEffect with useRef
    code: |
      import { useEffect, useRef } from 'react';

      class ClickHandler {
        handleEvent(event) {
          console.log('React: clicked', event.target);
        }
      }

      function App() {
        const btnRef = useRef();

        useEffect(() => {
          const handler = new ClickHandler();
          const btn = btnRef.current;
          btn.addEventListener('click', handler);
          return () => btn.removeEventListener('click', handler);
        }, []);

        return <button ref={btnRef}>Click Me</button>;
      }

  vue:
    setup: mounted lifecycle with $refs
    code: |
      <template>
        <button ref="btn">Click Me</button>
      </template>

      <script>
      class ClickHandler {
        handleEvent(event) {
          console.log('Vue: clicked', event.target);
        }
      }

      export default {
        mounted() {
          const handler = new ClickHandler();
          this.$refs.btn.addEventListener('click', handler);
        },
        beforeUnmount() {
          this.$refs.btn.removeEventListener('click', handler);
        }
      }
      </script>

  jquery:
    setup: Vanilla JS inside jQuery context
    code: |
      <button id="btn">Click Me</button>

      <script>
        class ClickHandler {
          handleEvent(event) {
            console.log('jQuery: clicked', event.target);
          }
        }

        const handler = new ClickHandler();
        document.getElementById('btn').addEventListener('click', handler);
      </script>

CSSOM

css_custom_properties_frameworks:
  description: >
    Demonstrates how CSS custom properties can be used in React, Vue, and jQuery
    to avoid repaints and reflows by shifting visual state management into the CSSOM.
    This technique leverages paint-only updates for performance optimization.

  rationale:
    benefits:
      - Avoids layout recalculations (reflows) by not modifying DOM structure or layout-affecting styles.
      - Enables smooth transitions and theme changes using GPU-accelerated properties.
      - Keeps logic and styling decoupled, improving maintainability and scalability.

    best_practices:
      - Use properties like `background`, `opacity`, and `transform` to avoid reflows.
      - Avoid changing `width`, `height`, `margin`, or `position` dynamically.
      - Prefer `visibility: hidden` over `display: none` when hiding elements without layout impact.
      - Use `requestAnimationFrame()` for batching visual updates.

  react:
    setup: useRef and useEffect to update CSS custom property
    code: |
      import { useEffect, useRef } from 'react';

      function App() {
        const boxRef = useRef();

        useEffect(() => {
          boxRef.current.style.setProperty('--box-color', 'coral');
        }, []);

        return (
          <div
            ref={boxRef}
            style={{
              width: '100px',
              height: '100px',
              background: 'var(--box-color)',
              transition: 'background 0.3s ease'
            }}
          />
        );
      }

  vue:
    setup: mounted lifecycle hook with $refs
    code: |
      <template>
        <div class="box" ref="box">CSSOM Powered</div>
      </template>

      <script>
      export default {
        mounted() {
          this.$refs.box.style.setProperty('--box-color', 'lightgreen');
        }
      }
      </script>

      <style>
      .box {
        width: 100px;
        height: 100px;
        background: var(--box-color);
        transition: background 0.3s ease;
      }
      </style>

  jquery:
    setup: DOM ready handler with native CSSOM access
    code: |
      <div class="box">CSSOM Powered</div>

      <script>
        $(document).ready(function () {
          $('.box')[0].style.setProperty('--box-color', 'lightblue');
        });
      </script>

      <style>
      .box {
        width: 100px;
        height: 100px;
        background: var(--box-color);
        transition: background 0.3s ease;
      }
      </style>

Theming

theme_switching_css_custom_properties:
  description: >
    Demonstrates how to switch between a light theme (black text on white background)
    and a dark theme (white text on black background) using CSS custom properties
    in React, Vue, and jQuery. This approach avoids layout reflows by updating
    paint-only properties via the CSSOM.

  rationale:
    technique: CSS custom property binding
    benefits:
      - Efficient theme switching without DOM re-rendering
      - Centralized styling via variables
      - Smooth transitions using GPU-accelerated properties
    variables:
      - --bg-color
      - --text-color

  react:
    setup: useRef and useEffect to toggle theme
    code: |
      import { useRef, useState } from 'react';

      function App() {
        const boxRef = useRef();
        const [darkMode, setDarkMode] = useState(false);

        const toggleTheme = () => {
          const root = boxRef.current;
          if (darkMode) {
            root.style.setProperty('--bg-color', '#ffffff');
            root.style.setProperty('--text-color', '#000000');
          } else {
            root.style.setProperty('--bg-color', '#000000');
            root.style.setProperty('--text-color', '#ffffff');
          }
          setDarkMode(!darkMode);
        };

        return (
          <div
            ref={boxRef}
            style={{
              background: 'var(--bg-color)',
              color: 'var(--text-color)',
              transition: 'all 0.3s ease',
              padding: '1rem'
            }}
          >
            <button onClick={toggleTheme}>Toggle Theme</button>
            <p>Hello from React</p>
          </div>
        );
      }

  vue:
    setup: mounted hook with $refs and reactive toggle
    code: |
      <template>
        <div ref="box" class="box">
          <button @click="toggleTheme">Toggle Theme</button>
          <p>Hello from Vue</p>
        </div>
      </template>

      <script>
      export default {
        data() {
          return { darkMode: false };
        },
        mounted() {
          this.setTheme();
        },
        methods: {
          toggleTheme() {
            this.darkMode = !this.darkMode;
            this.setTheme();
          },
          setTheme() {
            const box = this.$refs.box;
            box.style.setProperty('--bg-color', this.darkMode ? '#000000' : '#ffffff');
            box.style.setProperty('--text-color', this.darkMode ? '#ffffff' : '#000000');
          }
        }
      }
      </script>

      <style>
      .box {
        background: var(--bg-color);
        color: var(--text-color);
        transition: all 0.3s ease;
        padding: 1rem;
      }
      </style>

  jquery:
    setup: DOM ready with CSSOM manipulation
    code: |
      <div class="box">
        <button id="toggleBtn">Toggle Theme</button>
        <p>Hello from jQuery</p>
      </div>

      <script>
        $(document).ready(function () {
          let darkMode = false;
          $('#toggleBtn').on('click', function () {
            const box = $('.box')[0];
            if (darkMode) {
              box.style.setProperty('--bg-color', '#ffffff');
              box.style.setProperty('--text-color', '#000000');
            } else {
              box.style.setProperty('--bg-color', '#000000');
              box.style.setProperty('--text-color', '#ffffff');
            }
            darkMode = !darkMode;
          });
        });
      </script>

      <style>
      .box {
        background: var(--bg-color);
        color: var(--text-color);
        transition: all 0.3s ease;
        padding: 1rem;
      }
      </style>

Frameworkless TDD

Generic TDD Checklist (Framework‑Agnostic, No Mocking Required)

A universal checklist for building testable software when mocking external systems is impossible and inline assertions are the only verification mechanism.


1. Extract all logic into pure functions

  • No side effects
  • No network or filesystem access
  • No global state
  • Deterministic output for identical input
  • Inline assertions validate assumptions
  • All business rules live here

Benefits

  • Pure functions remain fully testable without mocks.
  • No dependency on any testing framework features.
  • Deterministic behavior ensures stable, fast tests.

PR Review Notes

  • For: Logic is isolated and easy to reason about.
  • Against: Requires discipline to maintain purity boundaries.

2. Write tests that target only pure functions

  • Tests cover all branches of pure logic
  • Tests assert shape, type, and invariants
  • Tests run without environment configuration
  • Tests run without credentials or external services
  • Tests do not import or reference external‑system clients

Benefits

  • Tests are lightweight and portable.
  • No reliance on mocking libraries or patching.
  • Tests never break due to environment drift.

PR Review Notes

  • For: Tests are deterministic and easy to review.
  • Against: Reviewers must ensure no hidden dependencies creep in.

3. Build a “fake client” using only pure functions

  • Implements the same interface as the real client
  • Uses pure functions for all validation
  • Contains inline assertions for contract enforcement
  • Returns deterministic canned values
  • Enables testing of higher‑level logic without external systems

Benefits

  • Fully testable stand‑in without mocks.
  • Higher‑level logic remains isolated from infrastructure.
  • Inline assertions enforce correctness without external tooling.

PR Review Notes

  • For: Interface contracts become explicit and reviewable.
  • Against: Fake client must be kept in sync with the real client.

4. Write business logic against an interface, not the real client

  • Business logic depends only on the interface
  • Business logic is tested using the fake client
  • No business logic imports the real client module
  • All branching and decision‑making stays testable

Benefits

  • Business logic stays decoupled and testable.
  • No framework‑specific dependency injection required.
  • Easier to reason about and maintain.

PR Review Notes

  • For: Clear separation of concerns.
  • Against: Requires reviewers to enforce interface purity.

5. Implement the real external‑system client last

  • Contains zero business logic
  • Delegates all transformations to pure functions
  • Performs only transport‑level operations
  • Uses inline assertions to validate request/response shape
  • Avoids branching, loops, or complex logic

Benefits

  • The real client becomes a thin, verifiable shell.
  • No untested logic hides inside the external boundary.
  • Inline assertions catch shape mismatches without mocks.

PR Review Notes

  • For: Easy to audit; minimal surface area for bugs.
  • Against: Reviewers must ensure no logic creeps into the client.

6. Use inline assertions as your only verification mechanism

  • Assertions validate input shape
  • Assertions validate output shape
  • Assertions enforce invariants
  • Assertions guard against malformed external responses
  • Assertions replace mocks as your safety net

Benefits

  • Immediate, framework‑free correctness guarantees.
  • No need for specialized assertion libraries.
  • Invariants enforced in production and tests.

PR Review Notes

  • For: Assumptions become explicit and reviewable.
  • Against: Some environments disable assertions by default.

7. Run the real client manually for smoke tests

  • Manual execution verifies connectivity
  • Assertions catch shape mismatches
  • No automated tests depend on external systems
  • No reliance on network availability or credentials

Benefits

  • Avoids brittle integration tests.
  • Maintains confidence in the external boundary.
  • System remains portable and environment‑independent.

PR Review Notes

  • For: Clear separation between smoke tests and unit tests.
  • Against: Manual steps may be overlooked.

Dependabot Considerations

Why this approach is easier than one with Dependabot‑managed dependencies

Advantages

  • Pure‑function‑centric design minimizes external dependencies, reducing Dependabot noise.
  • No mocking libraries, test frameworks, or DI frameworks means fewer version bumps.
  • Fewer transitive dependencies means fewer security alerts and fewer PRs to review.
  • Inline assertions eliminate the need for assertion libraries that Dependabot would track.
  • Fake client avoids the need for test‑only libraries that Dependabot would update.
  • Real client is thin, so dependency updates rarely break logic.

PR Review Notes

  • For:
    • Reviewers spend less time triaging Dependabot PRs.
    • Dependency updates are less risky because logic is isolated.
    • Reduced cognitive load: fewer libraries, fewer breaking changes.
  • Against:
    • Some reviewers may prefer richer tooling that introduces more dependencies.
    • Teams accustomed to framework‑heavy testing may resist the minimal‑dependency model.

Why This Approach Beats Framework‑Heavy Testing

  • No dependency on a specific testing framework.
  • No reliance on mocking libraries.
  • No brittle integration tests.
  • No hidden logic in external‑system clients.
  • Faster, deterministic tests.
  • Easier to port across languages and environments.
  • Fewer dependencies for Dependabot to manage.
  • PR reviews become simpler because logic is isolated and explicit.
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