React vs SolidJS

Agent access

1. ai-native userPoint an agent at llms.txt or agent-oriented docs

   weight 2 · round to React
   React✓fullprobed9/10

   A live probe confirms react.dev/llms.txt returns HTTP 200 with structured agent-oriented documentation content, directly satisfying the story. Missing for 10: independent/community corroboration of AI agents actually consuming this file successfully.

   • [probe] “PROBE llms.txt: HTTP 200 at https://react.dev/llms.txt # React Documentation > The library for web and native user interfaces. ## Learn Re…”

   proof ↗⚑ flag

   SolidJS—none0/10

   No evidence in the pack mentions llms.txt, agent-oriented documentation, or any AI-agent-consumable docs format for SolidJS. The evidence covers reactivity, performance, SSR, and community sentiment, none of which address agentic doc discovery. Missing for 10: any mention of llms.txt file, agent-friendly docs endpoint, or similar structured documentation for AI agents.

   ⚑ flag

Api quality

1. ai-native userExplore an interactive API reference with runnable examples

   weight 2 · round drawn
   React—none0/10

   The evidence pack shows react.dev documentation exists (llms.txt, general docs content) but contains no mention of an interactive API reference with runnable/embedded live examples; no sandbox, playground, or runnable-code evidence is present.

   ⚑ flag

   SolidJS—none0/10

   Evidence only mentions a landing-page playground widget and example demos, not an interactive API reference with runnable examples; the playground is even described as buggy (solid-comm-3) and examples failing to load (solid-comm-6). No documentation of an actual API reference with embedded runnable examples exists in the evidence pack.

   ⚑ flag

2. ai-native userRely on versioned APIs with a documented deprecation policy

   weight 2 · round drawn
   React—none0/10

   No evidence of a documented API versioning/deprecation policy for React; evidence covers licensing, framework features, and community sentiment but nothing about semantic versioning guarantees or deprecation timelines.

   ⚑ flag

   SolidJS—none0/10

   No evidence pack item documents a formal versioning scheme or deprecation policy for SolidJS APIs; community discussion even shows uncertainty about a rumored 2.0 with breaking changes going unanswered, but this is not a concrete first-party claim to dispute—simply an absence of the capability.

   • [community] “Hesitant to learn Solid in detail because of rumors of a 2.0 release with breaking changes; asked about its status.”

   proof ↗⚑ flag

Compiler driven updates

1. developerRely on a compiler to translate my components into efficient, surgical DOM updates instead of writing manual diffing code

   weight 2 · round to SolidJS
   React—none0/10

   The evidence describes React's mechanism as runtime virtual-DOM diffing/reconciliation (react-comm-5: 'own DOM manipulation abstraction, with efficient change management') rather than a compiler that translates components into surgical DOM updates ahead of time. No evidence pack item claims React uses a compiler to eliminate diffing (e.g., no mention of React Compiler achieving this), so the specific 'compiler instead of manual diffing' claim is unsupported.

   • [community] “What's interesting is the React team had to implement their own DOM manipulation abstraction, with efficient change management and not inter…”
   • [community] “I think concurrent mode and fibers are kludgy hacks that arise from the problem that only the main thread has access to the DOM... few, if a…”

   proof ↗⚑ flag

   SolidJS✓fullcommunity8/10

   SolidJS's fine-grained reactivity model compiles JSX into direct DOM update calls, eliminating virtual DOM diffing, and evidence confirms no re-render/diffing occurs since only dependent code reruns and elements are real DOM nodes; community reports corroborate exceptional surgical-update performance and speed over React's diffing approach. Missing for 10: first-party technical explanation of the compiler's code-generation process itself and independent benchmark citations beyond community anecdotes.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [github] “A `<div>` is a real div, so you can use your browser's devtools to inspect the rendering”
   • [community] “Creator Ryan Carniato is patient and answers questions on Twitter reliably. The performance Solid squeezes out of the DOM is next level, tho…”
   • [community] “In some benchmarks Solid appears to be both the fastest and smallest JS library, per a comparison of RealWorld demo implementations.”
   • [community] “Solid finally realizes the theoretical potential of fine-grained reactive updates, a concept that existed in Knockout.js, Aurelia, and MobX+…”

   proof ↗⚑ flag

Component encapsulation

1. developerBuild encapsulated components that manage their own local state and compose them into complex UIs

   weight 3 · round to React
   React✓fullclaimed10/10

   React's core value proposition—encapsulated, stateful components composed into complex UIs—is directly stated in both GitHub description and docs, with supporting evidence on state updates re-rendering UI and flexible incremental adoption.

   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”
   • [claimed-docs] “You can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match…”
   • [github] “you can use as little or as much React as you need”
   • [claimed-docs] “You don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on …”

   proof ↗⚑ flag

   SolidJS✓fullcommunity9/10

   SolidJS's core design is fine-grained reactive state that only reruns dependent code, plus built-in state management (Context/Stores) for composing components, corroborated by multiple hands-on accounts of building real component-based UIs (react-bootstrap port, data viz work, production apps) confirming encapsulated, composable component patterns work well. missing for 10: no explicit dedicated documentation excerpt on component composition patterns beyond signals/stores.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [github] “Performant state management is built-in with Context and Stores: you don't have to reach for a third party library to manage global state”
   • [community] “Ported react-bootstrap to SolidJS and the process was fairly painless. No need to stash useRefs/useCallbacks since components run once; refs…”
   • [community] “For data viz work, Solid is my go-to tool: small, flexible, and lets me declare granular computed properties instead of relying on useMemo/R…”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”
   • [community] “After presenting Solid at work, a colleague said: 'This looks like React, easier to understand, faster, smaller, more built-in stuff... why …”

   proof ↗⚑ flag

Custom renderer targets

1. developerWrite custom renderers so the framework's component model can target platforms other than the browser DOM

   weight 1 · round to SolidJS
   React~partialcommunity4/10

   Evidence shows React's architecture is renderer-agnostic in practice—official targets beyond the DOM include React Native (native mobile) and server-side streaming rendering, and a community comment notes React had to build its own abstraction layer for DOM manipulation that could generalize—implying the reconciler is decoupled from any single host environment. However, none of the evidence explicitly documents a public API (e.g. react-reconciler) or guide for developers to author their OWN custom renderer targeting arbitrary platforms; all cited renderer targets are first-party (React Native, DOM, server) rather than developer-authored. Missing for 10: explicit docs/API reference for writing custom host renderers, third-party custom-renderer examples, and confirmation this is a supported/stable public surface.

   • [claimed-docs] “React Native and Expo let you build apps in React for Android, iOS, and more. They look and feel native because their UIs are truly native.”
   • [github] “React can also render on the server using Node and power mobile apps using React Native.”
   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [community] “What's interesting is the React team had to implement their own DOM manipulation abstraction, with efficient change management and not inter…”

   proof ↗⚑ flag

   SolidJS✓fullclaimed7/10

   SolidJS explicitly advertises 'Universal: write custom renderers to use Solid anywhere' (solid-gh-6), directly matching the story, with corroborating first-party evidence of its DOM-based rendering being real and inspectable (solid-gh-5) and library extensibility (solid-gh-8). Missing for 10: no independent/hands-on example of a non-DOM custom renderer (e.g., native/canvas/terminal target) being built and used in practice, and no documentation link detailing the custom-renderer API.

   • [github] “Universal: write custom renderers to use Solid anywhere”
   • [github] “A `<div>` is a real div, so you can use your browser's devtools to inspect the rendering”
   • [github] “Solid's bare-metal, minimal abstractions give you direct access to the DOM, making it easy to use your favorite native JavaScript libraries …”

   proof ↗⚑ flag

Dependency injection modules

1. developerOrganize my app into modular, dependency-injected building blocks

   weight 2 · round drawn
   React~partialclaimed5/10

   React clearly supports building encapsulated, composable components (react-gh-1, react-gh-3), giving strong modularity, but the evidence pack contains no mention of a dependency-injection mechanism (React relies on props/Context rather than a DI container, and none of the docs or community citations discuss DI patterns). missing for 10: explicit dependency-injection mechanism or pattern documentation, independent corroboration of DI usage in React apps.

   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”
   • [github] “you can use as little or as much React as you need”
   • [claimed-docs] “You can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match…”

   proof ↗⚑ flag

   SolidJS~partialclaimed5/10

   Solid's built-in Context and Stores provide a mechanism analogous to dependency injection for sharing state across modular components without third-party libraries, and its component model is inherently modular. However, there's no deeper documentation of DI patterns, module boundaries, or hands-on community evidence specifically validating this architectural pattern beyond the brief Context/Stores mention. Missing for 10: explicit DI pattern documentation/examples, evidence of modular app architecture guidance, independent corroboration of DI usage in real apps.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [github] “Performant state management is built-in with Context and Stores: you don't have to reach for a third party library to manage global state”

   proof ↗⚑ flag

Direct dom debugging

1. developerDebug my UI directly in browser devtools because the framework renders real DOM nodes

   weight 2 · round to SolidJS
   React~partialcommunity6/10

   Evidence confirms React renders into real DOM (react-docs-1, react-comm-5 discussing React's DOM manipulation abstraction), which underlies devtools inspectability, but no citation explicitly mentions browser devtools debugging or React DevTools extension. Missing for 10: explicit mention of browser/React DevTools usage, first-party or community confirmation of debugging real DOM nodes in devtools.

   • [claimed-docs] “You don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on …”
   • [community] “What's interesting is the React team had to implement their own DOM manipulation abstraction, with efficient change management and not inter…”
   • [github] “React can also render on the server using Node and power mobile apps using React Native.”

   proof ↗⚑ flag

   SolidJS✓fullcommunity8/10

   Solid explicitly states elements render as real DOM nodes inspectable via browser devtools (solid-gh-5), reinforced by direct DOM access claims for D3-style manipulation (solid-gh-8) and community reports of intuitive, debuggable reactivity (solid-comm-10, solid-comm-4). missing for 10: no independent hands-on account specifically confirming devtools inspection workflow beyond the vendor claim.

   • [github] “A `<div>` is a real div, so you can use your browser's devtools to inspect the rendering”
   • [github] “Solid's bare-metal, minimal abstractions give you direct access to the DOM, making it easy to use your favorite native JavaScript libraries …”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”
   • [community] “Ported react-bootstrap to SolidJS and the process was fairly painless. No need to stash useRefs/useCallbacks since components run once; refs…”

   proof ↗⚑ flag

Direct dom manipulation integration

1. developerDirectly manipulate the DOM to integrate native JavaScript libraries like charting or visualization tools

   weight 1 · round to SolidJS
   React—none0/10

   The evidence pack never mentions React's refs/escape-hatch APIs (e.g., useRef, ref callbacks) or any documented pattern for direct DOM access to integrate third-party libraries like charting tools; it only discusses embedding React in existing pages, JSX, and state-driven rendering, which is a different concept.

   ⚑ flag

   SolidJS✓fullcommunity8/10

   First-party docs explicitly state Solid's bare-metal, minimal abstractions give direct DOM access for using native libraries like D3, and real DOM elements are inspectable via devtools, which is corroborated by community reports of using Solid for data-viz work with granular reactive control. Missing for 10: no concrete hands-on example/tutorial of integrating a specific charting library (e.g., D3 or Chart.js) walked through, and only one independent voice confirms real-world data-viz usage.

   • [github] “Solid's bare-metal, minimal abstractions give you direct access to the DOM, making it easy to use your favorite native JavaScript libraries …”
   • [github] “A `<div>` is a real div, so you can use your browser's devtools to inspect the rendering”
   • [community] “For data viz work, Solid is my go-to tool: small, flexible, and lets me declare granular computed properties instead of relying on useMemo/R…”

   proof ↗⚑ flag

Explicit state flow

1. developerTrace state changes through explicit, predictable data flow instead of debugging implicit two-way bindings

   weight 2 · round to SolidJS
   React~partialclaimed4/10

   React's docs show a data-flow-driven update model (passing new data on interaction, then React updates the UI) which aligns with explicit unidirectional state flow, but the evidence pack never explicitly discusses one-way vs two-way binding, state traceability, or debugging predictability as a design goal. Missing for 10: explicit docs/discussion of unidirectional data flow, comparison to two-way binding, and independent commentary on debuggability of state changes.

   • [claimed-docs] “You can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match…”
   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”

   proof ↗⚑ flag

   SolidJS✓fullcommunity7/10

   Solid's fine-grained reactive model creates explicit, traceable dependency graphs where only code depending on a changed signal reruns, and community reports specifically praise this as making state changes 'intuitive and easy to debug' without needing useRef/useCallback indirection common in two-way-binding-adjacent patterns. However, other users note the reactive system can feel non-intuitive compared to alternatives and docs are described as lacking, so real-world tracing experience has friction. Missing for 10: dedicated docs/tutorial on debugging data flow, devtools maturity (described as alpha/unusable in one report), and independent hands-on comparison specifically on binding-vs-signal debuggability.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”
   • [community] “Ported react-bootstrap to SolidJS and the process was fairly painless. No need to stash useRefs/useCallbacks since components run once; refs…”
   • [community] “For data viz work, Solid is my go-to tool: small, flexible, and lets me declare granular computed properties instead of relying on useMemo/R…”
   • [community] “Solid finally realizes the theoretical potential of fine-grained reactive updates, a concept that existed in Knockout.js, Aurelia, and MobX+…”
   • [community] “Critical take: Solid's API is non-intuitive, same issue as its reactive system, especially compared to Svelte, which 'nails reactivity' with…”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Fine grained reactivity

1. developerDeclare reactive state and have only the dependent UI code re-run when it changes

   weight 3 · round to SolidJS
   React~partialcommunity6/10

   React docs confirm that state updates cause the UI to re-render to match new data, and community discussion (react-comm-5) describes React's virtual-DOM diffing as an efficient change-management abstraction that avoids unnecessary DOM writes — but React's model re-runs the whole component function on state change rather than tracking fine-grained dependencies like signal-based reactivity, and no evidence here covers memoization primitives (useMemo/useCallback) or independent benchmarks proving minimal re-execution. Missing for 10: documentation of fine-grained dependency tracking/memoization APIs, independent verification that only dependent code paths re-run rather than whole components.

   • [claimed-docs] “You can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match…”
   • [community] “What's interesting is the React team had to implement their own DOM manipulation abstraction, with efficient change management and not inter…”
   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”

   proof ↗⚑ flag

   SolidJS✓fullcommunity9/10

   Core value prop of fine-grained reactivity (only dependent code re-runs) is explicitly documented by the vendor and corroborated repeatedly by developers describing intuitive, immediate reactivity and performance gains from granular updates. Missing for 10: independent benchmark/technical deep-dive proving exact dependency-tracking behavior beyond anecdote.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”
   • [community] “Solid finally realizes the theoretical potential of fine-grained reactive updates, a concept that existed in Knockout.js, Aurelia, and MobX+…”
   • [community] “For data viz work, Solid is my go-to tool: small, flexible, and lets me declare granular computed properties instead of relying on useMemo/R…”

   proof ↗⚑ flag

Global state primitives

1. developerManage global application state using built-in primitives without adding a third-party library

   weight 2 · round to SolidJS
   React~partialclaimed4/10

   Evidence confirms React components manage their own local state (react-gh-1, react-docs-3), but nothing in the pack explicitly describes built-in primitives like Context/useReducer being used for *global* app-wide state management without libraries like Redux. missing for 10: explicit documentation of useContext/useReducer as a global-state solution, comparison to third-party state libraries, and independent confirmation this pattern is commonly used in production.

   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”
   • [claimed-docs] “You can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match…”

   proof ↗⚑ flag

   SolidJS✓fullcommunity8/10

   SolidJS explicitly documents built-in Context and Stores primitives for global state management without needing a third-party library (solid-gh-2), backed by fine-grained reactivity primitives (solid-gh-1) and Resources for async state (solid-gh-3), with community reports confirming intuitive built-in state handling in production use (solid-comm-10, solid-comm-4). Missing for 10: independent hands-on comparison specifically testing Context/Store scalability for large global state, and no dedicated deep-dive docs excerpt shown beyond the marketing claim.

   • [github] “Performant state management is built-in with Context and Stores: you don't have to reach for a third party library to manage global state”
   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [github] “With Resources, you can use data loaded from the server like any other piece of state and build a responsive UI for it thanks to Suspense an…”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”
   • [community] “Ported react-bootstrap to SolidJS and the process was fairly painless. No need to stash useRefs/useCallbacks since components run once; refs…”

   proof ↗⚑ flag

Incremental adoption

1. developerIncrementally adopt the framework, scaling from a small part of a page up to a full application

   weight 2 · round to React
   React✓fullclaimed9/10

   React's own docs and GitHub explicitly document incremental adoption: adding React to an existing HTML page and rendering components anywhere on it, using 'as little or as much React as you need,' while also scaling to full apps via recommended frameworks like Next.js/React Router. This directly matches the story from small page-part to full application. Missing for 10: no independent/hands-on case study confirming a real incremental migration in production.

   • [claimed-docs] “You don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on …”
   • [github] “you can use as little or as much React as you need”
   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”
   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”

   proof ↗⚑ flag

   SolidJS~partialcommunity5/10

   Evidence shows Solid can be used as a small, embeddable UI library (Asciinema case study) and is web-component friendly with real DOM elements and custom renderers, suggesting it can be dropped into part of a page or scaled up. However, there is no explicit first-party guidance or documented pattern for incremental adoption (e.g., mounting into existing apps, migration path) — missing for 10: official incremental-adoption docs, evidence of mounting into a subset of an existing non-Solid app, and independent case studies beyond one HN example.

   • [github] “Web component friendly and can author custom elements”
   • [github] “Universal: write custom renderers to use Solid anywhere”
   • [github] “Solid's bare-metal, minimal abstractions give you direct access to the DOM, making it easy to use your favorite native JavaScript libraries …”
   • [community] “Asciinema's 3.0 rebuild used SolidJS as its small UI library, reportedly making the app 4x smaller and 50x faster than the previous version.”

   proof ↗⚑ flag

Unified markup logic

1. developerWrite markup and rendering logic together in a single component using HTML, CSS, and JavaScript I already know

   weight 3 · round to React
   React✓fullclaimed8/10

   React's core JSX model lets developers co-locate markup, logic, and (via inline/CSS-in-JS or standard stylesheets) styling in a single component using familiar HTML-like syntax and JavaScript, as documented in react-docs-2 and react-docs-3, with component composition described in react-gh-1. Missing for 10: explicit first-party documentation/example combining CSS directly inside a component (CSS-in-JS or style co-location) and independent hands-on corroboration of the 'CSS' part of the story.

   • [claimed-docs] “This markup syntax is called JSX. It is a JavaScript syntax extension popularized by React.”
   • [claimed-docs] “You can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match…”
   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”

   proof ↗⚑ flag

   SolidJS~partialcommunity6/10

   Evidence indicates Solid renders real HTML DOM elements (solid-gh-5) and that components behave like React's JSX-based ones (solid-comm-4, solid-comm-14), implying developers write markup and logic together using familiar HTML/JS syntax, but no evidence explicitly discusses JSX syntax, CSS integration within components, or single-file component structure. missing for 10: explicit JSX/HTML+CSS+JS component syntax documentation, CSS-in-component handling, first-party doc citation of component authoring model.

   • [github] “A `<div>` is a real div, so you can use your browser's devtools to inspect the rendering”
   • [community] “Ported react-bootstrap to SolidJS and the process was fairly painless. No need to stash useRefs/useCallbacks since components run once; refs…”
   • [community] “After presenting Solid at work, a colleague said: 'This looks like React, easier to understand, faster, smaller, more built-in stuff... why …”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”

   proof ↗⚑ flag

Web components authoring

1. developerAuthor standards-based web components and custom elements using the framework

   weight 1 · round to SolidJS
   React—none0/10

   The evidence pack covers React's component model, JSX, SSR, and React Native but contains no mention of authoring standards-based Web Components/custom elements support, which is a distinct spec-based capability.

   ⚑ flag

   SolidJS~partialclaimed5/10

   solid-gh-7 explicitly claims Solid is 'web component friendly and can author custom elements,' directly supporting the story, but this is a single first-party bullet with no further documentation detail or independent hands-on corroboration in the pack. Missing for 10: detailed docs/guide on authoring custom elements, real-world examples or community validation of web-component authoring, and any discussion of standards-compliance nuances.

   • [github] “Web component friendly and can author custom elements”

   proof ↗⚑ flag

Browser support

1. developerThe framework's officially supported browser matrix so I can plan polyfills or decide when to drop legacy support

   weight 2 · round drawn
   React—none0/10

   No evidence in the pack mentions a supported browser matrix, minimum browser versions, or polyfill guidance for React; docs excerpts cover general usage, JSX, server rendering, and licensing but nothing on browser compatibility.

   ⚑ flag

   SolidJS—none0/10

   No evidence in the pack mentions an officially supported browser matrix, polyfill guidance, or legacy browser support policy for SolidJS; the evidence is entirely about performance, reactivity, and developer experience. missing for 10: official browser compatibility matrix, polyfill recommendations, legacy browser support policy documentation.

   ⚑ flag

Buildless usage

1. developerUse the framework directly via a script tag without needing a package manager or bundler

   weight 2 · round to React
   React✓fullclaimed7/10

   React's official docs explicitly state you can 'Add React to your existing HTML page' without building a whole app, and GitHub docs note 'you can use as little or as much React as you need,' both directly supporting no-bundler script-tag usage. Missing for 10: independent/hands-on corroboration of the CDN script-tag workflow and explicit mention of production caveats (e.g. JSX requiring a transform when not bundling).

   • [claimed-docs] “You don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on …”
   • [github] “you can use as little or as much React as you need”

   proof ↗⚑ flag

   SolidJS—none0/10

   No evidence pack item mentions a CDN/script-tag usage or no-build-tool workflow for SolidJS; all references discuss reactivity, SSR, ecosystem opinions, and comparisons to React/Vue/Svelte.

   ⚑ flag

Community chat support

1. developerJoin an official community chatroom to get help and connect with other framework users

   weight 1 · round drawn
   React—none0/10

   No evidence pack item mentions an official chatroom, Discord, Discourse forum, or similar community help channel for React; evidence covers docs, GitHub, and unrelated HN discussions on licensing/architecture. Missing for 10: any mention of an official Discord/Slack/forum, links to such community spaces, or documentation directing developers to a real-time chat community.

   ⚑ flag

   SolidJS—none0/10

   The evidence pack contains no mention of an official Discord, Slack, Gitter, or other chatroom for SolidJS; only informal community interactions (Twitter, forum posts) are referenced. Since a framework of this type plausibly could offer an official community chatroom, the axis applies, but no evidence confirms it exists or its quality.

   ⚑ flag

Component library ecosystem

1. developerPick from a rich ecosystem of third-party pre-built UI component libraries for the framework

   weight 2 · round to SolidJS
   React—none0/10

   The evidence pack describes React's core composition model and frameworks (Next.js, React Native, React Router) but contains no mention of third-party pre-built UI component libraries (e.g., component design systems) available for React. Missing for 10: any reference to component libraries, ecosystem marketplace, or third-party UI kits.

   ⚑ flag

   SolidJS~partialcommunity4/10

   Evidence shows only anecdotal component-library activity (a developer porting react-bootstrap to Solid) rather than documentation of an official or extensive third-party UI component ecosystem, and other commenters explicitly note ecosystem gaps (e.g., Framer Motion support lagging React's, trpc/tanstack-query needing adapters) and general community/doc thinness. This suggests some ecosystem exists but is far from 'rich' compared to more established frameworks. Missing for 10: first-party or curated list of major component libraries, evidence of widely-adopted native (not ported) UI kits, and independent confirmation of ecosystem breadth/maturity.

   • [community] “Ported react-bootstrap to SolidJS and the process was fairly painless. No need to stash useRefs/useCallbacks since components run once; refs…”
   • [community] “It's been an absolute joy to write Solid for years, feels more expressive than React with solid-primitives. But ecosystem gaps are real: trp…”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Dev server error diagnostics

1. developerGet clear, actionable error messages from the dev server and build tool when something breaks

   weight 2 · round drawn
   React—none0/10

   No evidence in the pack addresses dev server error messages, build tool diagnostics, or error overlay features; all citations cover component model, licensing history, or unrelated community sentiment. Missing for 10: any mention of React's error boundaries, dev-mode warnings, build tool (e.g., Vite/CRA) error overlays, or documentation on actionable error messages.

   ⚑ flag

   SolidJS—none0/10

   No evidence describes SolidJS's dev server or build tool producing clear, actionable error messages; the only tooling-related comment calls dev tools 'alpha/unusable,' which further undercuts any claim of good error UX. Missing for 10: any documentation or example of error messages, build-time diagnostics, or dev server feedback.

   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

First party forms support

1. developerUse first-party modules for building and validating forms that integrate with the rest of the framework

   weight 2 · round drawn
   React—none0/10

   No evidence of a first-party React forms/validation module; React core only provides controlled input patterns via state, with no mention of official form-building or validation libraries.

   ⚑ flag

   SolidJS—none0/10

   No evidence of any first-party forms or validation module in the SolidJS ecosystem; the evidence pack covers reactivity, SSR, rendering, and community sentiment but never mentions forms or validation tooling, and one comment even notes ecosystem gaps relative to React libraries. missing for 10: any mention of a first-party forms library, validation integration, or official forms module.

   • [community] “It's been an absolute joy to write Solid for years, feels more expressive than React with solid-primitives. But ecosystem gaps are real: trp…”

   proof ↗⚑ flag

Governance risk

1. developerWhether the framework is governed by a foundation or a single company, so I can assess long-term continuity and lock-in risk

   weight 3 · round to React
   React~partialcommunity5/10

   The GitHub repo is under 'facebook/react' and community discussion (react-comm-1/2/4/9) about the BSD+Patents license controversy makes clear React is single-company (Meta/Facebook) governed rather than foundation-governed, letting a developer infer lock-in risk. However, there is no explicit governance statement, no mention of any foundation transfer, and no first-party documentation addressing continuity/lock-in directly. Missing for 10: explicit governance/foundation statement, first-party continuity assurances, independent analysis of Meta's stewardship model.

   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”
   • [community] “Wait, so they're replacing a license that has a dodgy patent grant that everyone distrusted, with a license that doesn't have a patent grant…”
   • [community] “It sucks that it took this long, but at the end of the day, they've done the right thing [relicensing React away from BSD+Patents to MIT].”
   • [community] “The first thing I do now on each Facebook open-source reveal, is to check the PATENTS file for the toxic second paragraph... I can't imagine…”

   proof ↗⚑ flag

   SolidJS—none0/10

   No evidence pack item documents SolidJS's governance model (e.g., foundation backing, corporate sponsor, or independent nonprofit status). The closest signal (solid-comm-17) only notes that most commits come from the creator alone, which hints at a single-maintainer project but is not authoritative governance documentation, leaving developers without a clear answer on foundation-vs-company control.

   • [community] “I love Solid: feature parity with React and faster. It's just 1,823 well-organized commits (1,329 from the creator alone), giving confidence…”

   proof ↗⚑ flag

Local user groups

1. developerFind and join a local in-person user group or meetup for the framework

   weight 1 · round drawn
   React—none0/10

   No evidence in the pack mentions local user groups, meetups, or in-person community events for React; all evidence covers technical features and licensing history. missing for 10: any mention of local meetup directories, community event listings, or partnerships with meetup platforms.

   ⚑ flag

   SolidJS—none0/10

   No evidence pack mentions local in-person user groups, meetups, or any offline community events for SolidJS; all evidence concerns online discussions, performance, and API critiques.

   ⚑ flag

Official routing library

1. developerUse an official first-party routing library that integrates seamlessly with the framework

   weight 3 · round drawn
   React—none0/10

   React's own docs explicitly state it has no built-in router and instead recommend third-party frameworks like Next.js or React Router for full app building, rather than shipping an official first-party routing library maintained by the React core team. No evidence pack item shows React itself provides or endorses a first-party router as an integrated part of the framework.

   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”

   proof ↗⚑ flag

   SolidJS—none0/10

   The evidence pack contains no first-party documentation of an official Solid routing library (e.g., solid-router) or its integration; the only related mention is a community complaint that 'SolidStart routing... can be very slow with no workaround' (solid-comm-15), which is a single-tier community critique, not a vendor claim being contradicted. Since there's no first-party evidence to establish the capability, and the lone reference is negative, this falls short of even a partial delivery.

   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Official state management library

1. developerUse an official first-party state management library maintained alongside the framework

   weight 2 · round to SolidJS
   React—none0/10

   The evidence pack shows React's built-in component state (useState) but no official first-party standalone state-management library maintained by the React team (e.g., something like Redux Toolkit, which is a separate third-party project). No docs or GitHub references mention such a library.

   ⚑ flag

   SolidJS✓fullcommunity8/10

   SolidJS ships built-in state management (Signals, Context, Stores) as part of the core framework, explicitly marketed as eliminating the need for third-party state libraries, and community accounts corroborate using this built-in reactivity for real apps. missing for 10: no deeper first-party docs/API reference cited beyond README bullets, and no independent long-term maintenance evidence specifically for the Stores API.

   • [github] “Performant state management is built-in with Context and Stores: you don't have to reach for a third party library to manage global state”
   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”
   • [community] “I love Solid: feature parity with React and faster. It's just 1,823 well-organized commits (1,329 from the creator alone), giving confidence…”

   proof ↗⚑ flag

Public roadmap visibility

1. developerCheck a public roadmap to see what the core team is currently working on

   weight 1 · round drawn
   React—none0/10

   No evidence pack item references a public roadmap or any current-work-in-progress tracker for React; all citations are docs, GitHub description, or community discussion unrelated to roadmap visibility.

   ⚑ flag

   SolidJS—none0/10

   No evidence of a public roadmap or documentation of what the core team is currently working on; only community discussion and rumors (e.g., about a 2.0 release) are mentioned, not an official roadmap artifact.

   ⚑ flag

Quick project scaffolding

1. developerScaffold and run a new project in just a few minutes using an official CLI or starter

   weight 3 · round to React
   React~partialclaimed4/10

   React's own docs point developers to third-party full-stack frameworks (Next.js, React Router) rather than providing a first-party CLI or starter template of their own, so scaffolding is delegated rather than delivered directly by React. missing for 10: an official React-branded CLI/starter (e.g. create-react-app equivalent), first-party quick-start scaffold command, and any timing/'few minutes' claims or hands-on corroboration of setup speed.

   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”

   proof ↗⚑ flag

   SolidJS—none0/10

   No evidence in the pack mentions an official CLI, create-solid, degit templates, or scaffolding/starter workflow; all citations discuss reactivity, performance, and developer sentiment rather than project setup tooling. Missing for 10: mention of official CLI (e.g., create-solid), starter templates, or quick-start scaffolding instructions and timing.

   ⚑ flag

Security track record

1. developerReview the project's public CVE/security-advisory history to judge its track record of handling and disclosing vulnerabilities

   weight 2 · round drawn
   React—none0/10

   No evidence of a public CVE/security-advisory history, disclosure policy, or track record documentation for React in the pack; community items discuss licensing/patents, not vulnerability disclosure.

   ⚑ flag

   SolidJS—none0/10

   No evidence in the pack references CVEs, security advisories, or a disclosure track record for SolidJS; all citations concern performance, DX, and ecosystem sentiment. Missing for 10: any mention of CVE database entries, GitHub Security Advisories, vulnerability disclosure policy, or historical patch/response record.

   ⚑ flag

Approachable familiar syntax

1. developerWrite components using standard HTML, CSS, and JavaScript syntax I already know, minimizing new concepts to learn

   weight 3 · round to React
   React~partialcommunity5/10

   React lets you drop into existing HTML pages and write UI declaratively (react-docs-1, react-gh-3), but it explicitly introduces JSX, a new JavaScript syntax extension, plus its own state/props model (react-docs-2, react-docs-3), meaning developers must learn new concepts beyond standard HTML/CSS/JS. Community commentary also notes React's internal model (fibers, concurrent mode) is non-trivial to grasp (react-comm-6, react-comm-7), reflecting a real learning curve rather than a pure 'use what you already know' experience. Missing for 10: evidence that plain HTML/CSS/JS suffices without JSX or hooks, and independent confirmation of minimal new-concept learning.

   • [claimed-docs] “You don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on …”
   • [claimed-docs] “This markup syntax is called JSX. It is a JavaScript syntax extension popularized by React.”
   • [claimed-docs] “You can pass them new data in response to an interaction, like when the user types into an input. React will then update the screen to match…”
   • [github] “you can use as little or as much React as you need”
   • [community] “I think concurrent mode and fibers are kludgy hacks that arise from the problem that only the main thread has access to the DOM... few, if a…”
   • [community] “Reading the React source to try to understand how React works is very challenging. This [tutorial] would have made the perfect guide.”

   proof ↗⚑ flag

   SolidJS!disputedcontradicted4/10

   Solid components render as real DOM elements inspectable via devtools (solid-gh-5) and many devs report an intuitive, React-like JSX syntax (solid-comm-4, solid-comm-14), suggesting familiar HTML/JS usage. However, hands-on reports concretely contradict the 'minimal new concepts' claim: props must be functions instead of plain values to stay reactive (solid-comm-16), the API and reactivity system are called non-intuitive with rough edges like the special props object (solid-comm-7, solid-comm-8), and naming conventions/docs are criticized as confusing for newcomers (solid-comm-15).

   • [github] “A `<div>` is a real div, so you can use your browser's devtools to inspect the rendering”
   • [community] “Ported react-bootstrap to SolidJS and the process was fairly painless. No need to stash useRefs/useCallbacks since components run once; refs…”
   • [community] “After presenting Solid at work, a colleague said: 'This looks like React, easier to understand, faster, smaller, more built-in stuff... why …”
   • [community] “Annoying part of Solid coming from React: every prop needs to be a function returning a value instead of a plain value, or it won't update r…”
   • [community] “Critical take: Solid's API is non-intuitive, same issue as its reactive system, especially compared to Svelte, which 'nails reactivity' with…”
   • [community] “For data viz work, Solid is my go-to tool: small, flexible, and lets me declare granular computed properties instead of relying on useMemo/R…”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Incremental html integration

1. developerDrop the framework into an existing server-rendered HTML page and render interactive components without rewriting the whole page

   weight 2 · round to React
   React✓fullclaimed9/10

   Official docs explicitly state you can add React to an existing HTML page and render interactive components anywhere on it, without needing to build the whole page in React, and note 'you can use as little or as much React as you need,' directly matching the story. Missing for 10: independent hands-on corroboration of this specific incremental-adoption workflow beyond first-party docs.

   • [claimed-docs] “You don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on …”
   • [github] “you can use as little or as much React as you need”

   proof ↗⚑ flag

   SolidJS~partialclaimed3/10

   Solid's web-component authoring, direct DOM access, and custom renderer support suggest it could be embedded into pieces of an existing page, but there's no explicit documentation or example of mounting Solid into a server-rendered HTML page alongside non-Solid content (e.g., a 'render() into an existing div' islands-style workflow). Missing for 10: explicit mount/embed API documentation, islands-architecture example, and hands-on developer report of adding Solid incrementally to a legacy server-rendered page.

   • [github] “Web component friendly and can author custom elements”
   • [github] “Solid's bare-metal, minimal abstractions give you direct access to the DOM, making it easy to use your favorite native JavaScript libraries …”
   • [github] “Universal: write custom renderers to use Solid anywhere”

   proof ↗⚑ flag

Interactive browser tutorial

1. developerTry an in-browser interactive tutorial to learn the framework hands-on without any local setup

   weight 2 · round drawn
   React—none0/10

   The evidence pack mentions react.dev has a 'Quick Start' section under 'Learn React' but never confirms an in-browser interactive coding tutorial/sandbox that requires no local setup. No citation describes a live-editable playground or hands-on tutorial experience. Missing for 10: explicit documentation or screenshot of an in-browser code editor/tutorial, community confirmation of using it without local setup.

   • [probe] “PROBE llms.txt: HTTP 200 at https://react.dev/llms.txt # React Documentation > The library for web and native user interfaces. ## Learn Re…”

   proof ↗⚑ flag

   SolidJS—none0/10

   No first-party (vendor/docs) evidence describes an official in-browser interactive tutorial for learning SolidJS without local setup; the only related evidence is a community complaint about a buggy 'playground widget' on the landing page (solid-comm-3, solid-comm-6), which is a single tier and not a vendor claim of a tutorial. Missing for 10: official docs/tutorial page evidence, confirmation of a REPL/playground being usable as a learning tool, and any corroboration that this feature works as intended.

   ⚑ flag

Legacy version security support

1. developerContinue receiving security updates for an older major version while I plan my migration

   weight 1 · round drawn
   React—none0/10

   No evidence pack content addresses LTS policies, security patch backports, or version-support timelines for older major React releases; nothing about a formal security update policy for legacy versions is mentioned.

   ⚑ flag

   SolidJS—none0/10

   No evidence in the pack addresses an LTS policy, backport security patches, or maintenance commitments for older major versions of SolidJS; there's only mention of a rumored 2.0 release with breaking changes and community concern about migration, but no documented security-support policy. missing for 10: LTS/version support policy documentation, security patch backport process, official EOL/migration timeline communication.

   • [community] “Hesitant to learn Solid in detail because of rumors of a 2.0 release with breaking changes; asked about its status.”

   proof ↗⚑ flag

Major version migration guide

1. developerFollow a dedicated migration guide when moving between two incompatible major versions of the framework

   weight 2 · round drawn
   React—none0/10

   No evidence of any dedicated major-version migration guide (e.g., React 17→18 or upgrade guide); the pack only covers general docs, licensing history, and community commentary unrelated to migration steps.

   ⚑ flag

   SolidJS—none0/10

   No evidence of a dedicated migration guide for major version upgrades; comm-11 shows users are hesitant about an upcoming 2.0 with breaking changes and unsure of status, and comm-2 explicitly notes docs lack even a React-migration guide, suggesting no such resource exists.

   • [community] “Hesitant to learn Solid in detail because of rumors of a 2.0 release with breaking changes; asked about its status.”
   • [community] “Creator Ryan Carniato is patient and answers questions on Twitter reliably. The performance Solid squeezes out of the DOM is next level, tho…”

   proof ↗⚑ flag

Version upgrade guide

1. developerFollow an official upgrade guide to move my existing project to a newer version

   weight 2 · round drawn
   React—none0/10

   No evidence pack items reference a version upgrade guide, migration steps, or changelog process for moving an existing React project to a newer version; docs excerpts only cover getting started and general concepts.

   ⚑ flag

   SolidJS—none0/10

   The evidence pack contains no mention of an official version-upgrade guide; instead community comments note documentation gaps (missing migration guide from React, uncertainty about a rumored 2.0 with breaking changes) which suggests no clear upgrade path is evidenced.

   • [community] “Creator Ryan Carniato is patient and answers questions on Twitter reliably. The performance Solid squeezes out of the DOM is next level, tho…”
   • [community] “Hesitant to learn Solid in detail because of rumors of a 2.0 release with breaking changes; asked about its status.”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

1. ai-native userRead the product's source under an open license

   weight 2 · round drawn
   React✓fullcommunity8/10

   React's source is publicly hosted on GitHub (facebook/react) and community evidence confirms the relicensing to MIT, a permissive open-source license, resolving prior patent-clause concerns. This directly satisfies reading source under an open license, evidenced by both the repo itself and community discussion of the MIT relicensing. Missing for 10: explicit citation of a LICENSE file/text in the evidence pack and independent confirmation of current license terms beyond the 2017 relicensing discussion.

   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”
   • [community] “It sucks that it took this long, but at the end of the day, they've done the right thing [relicensing React away from BSD+Patents to MIT].”
   • [community] “Death to asymmetrical patent clauses! Huge victory for OSS.”
   • [community] “The first thing I do now on each Facebook open-source reveal, is to check the PATENTS file for the toxic second paragraph... I can't imagine…”

   proof ↗⚑ flag

   SolidJS✓fullcommunity8/10

   SolidJS is hosted openly on GitHub (solidjs/solid) with public source and commit history referenced (solid-comm-17 notes 1,823 commits), consistent with its well-known MIT license, and the repo evidence itself confirms open, inspectable source code. Missing for 10: explicit citation of the license file/text and independent confirmation of license terms beyond commit-history mentions.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [community] “I love Solid: feature parity with React and faster. It's just 1,823 well-organized commits (1,329 from the creator alone), giving confidence…”

   proof ↗⚑ flag

Ai assisted performance profiling

1. ai-native developerUse AI-powered devtools that analyze my component tree and suggest specific rendering or reactivity optimizations

   weight 2 · round drawn
   React—none0/10

   No evidence of AI-powered devtools analyzing React component trees for rendering/reactivity optimization suggestions; evidence pack only covers general React architecture, licensing history, and community sentiment.

   ⚑ flag

   SolidJS—none0/10

   No evidence of any AI-powered devtool that analyzes SolidJS component trees or suggests reactivity/rendering optimizations; the only devtools mention is a community complaint that Solid's dev tools are 'alpha/unusable' (solid-comm-15), with no AI-driven analysis feature described.

   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Bundle size

1. developerShip a small, dependency-light JS bundle to minimize runtime footprint and reduce supply-chain risk

   weight 3 · round to SolidJS
   React—none0/10

   The evidence pack contains no claims or data about React's bundle size, dependency footprint, or supply-chain risk profile; only general adoption flexibility ('use as little or as much React as you need') is mentioned, which does not address bundle weight or dependencies.

   ⚑ flag

   SolidJS~partialcommunity6/10

   Community evidence supports small bundle size (Asciinema rebuild 4x smaller, RealWorld benchmark showing Solid as fastest and smallest JS library) and built-in state management reducing need for third-party libs, which aligns with a dependency-light footprint. However, there's no first-party evidence pack data on actual bundle size numbers, tree-shaking, zero-dependency claims, or supply-chain security practices (e.g., audits, minimal npm dependency tree). Missing for 10: explicit vendor documentation on bundle size/dependency count, supply-chain security practices, and independent bundle-size benchmarking beyond anecdotal HN comments.

   • [community] “Asciinema's 3.0 rebuild used SolidJS as its small UI library, reportedly making the app 4x smaller and 50x faster than the previous version.”
   • [community] “In some benchmarks Solid appears to be both the fastest and smallest JS library, per a comparison of RealWorld demo implementations.”
   • [github] “Performant state management is built-in with Context and Stores: you don't have to reach for a third party library to manage global state”

   proof ↗⚑ flag

No virtual dom overhead

1. developerRely on a compiler-optimized rendering system that updates the DOM without a virtual DOM diffing step

   weight 2 · round to SolidJS
   React—none0/10

   React's own architecture relies on virtual DOM diffing for reconciliation; evidence (react-comm-5) explicitly describes React's 'own DOM manipulation abstraction' with change management, i.e., a virtual DOM diff approach, not a compiler that eliminates virtual DOM diffing like Svelte. No evidence pack item claims React ships a no-virtual-DOM compiler-optimized renderer.

   • [community] “What's interesting is the React team had to implement their own DOM manipulation abstraction, with efficient change management and not inter…”
   • [community] “I think concurrent mode and fibers are kludgy hacks that arise from the problem that only the main thread has access to the DOM... few, if a…”

   proof ↗⚑ flag

   SolidJS✓fullcommunity8/10

   Evidence shows Solid's fine-grained reactivity model where only code depending on changed state reruns (solid-gh-1), that DOM elements are real, directly inspectable nodes rather than virtual-DOM abstractions (solid-gh-5, solid-gh-8), and community corroboration that Solid 'finally realizes fine-grained reactive updates' with top-tier performance/size in benchmarks (solid-comm-9, solid-comm-19). Missing for 10: explicit first-party documentation naming the 'compiler' step (e.g. JSX-to-DOM-instruction compilation) rather than just describing fine-grained reactivity outcomes.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [github] “A `<div>` is a real div, so you can use your browser's devtools to inspect the rendering”
   • [github] “Solid's bare-metal, minimal abstractions give you direct access to the DOM, making it easy to use your favorite native JavaScript libraries …”
   • [community] “In some benchmarks Solid appears to be both the fastest and smallest JS library, per a comparison of RealWorld demo implementations.”
   • [community] “Solid finally realizes the theoretical potential of fine-grained reactive updates, a concept that existed in Knockout.js, Aurelia, and MobX+…”

   proof ↗⚑ flag

Progressive hydration

1. developerHydrate my server-rendered app progressively so pages become interactive faster

   weight 2 · round drawn
   React~partialclaimed6/10

   React docs explicitly describe server-side streaming HTML that progressively fills in content before JS loads, which underlies progressive/selective hydration for faster interactivity, and frameworks built on React (Next.js, React Router) implement this pattern. Missing for 10: explicit first-party documentation of selective/partial hydration mechanics, independent hands-on benchmarks confirming faster interactivity, and community corroboration of the hydration experience itself.

   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [claimed-docs] “Frameworks that implement it let you fetch data in asynchronous components that run on the server or even during the build.”
   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”

   proof ↗⚑ flag

   SolidJS~partialclaimed6/10

   First-party evidence states Solid supports full SSR with streaming and progressive hydration to reach interactivity quickly, directly matching the story, but this is a single vendor claim with no hands-on/community corroboration or technical detail on how progressive hydration works. missing for 10: independent verification of progressive hydration performance, documentation depth on implementation, and community reports specifically testing hydration speed.

   • [github] “Solid has full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible.”

   proof ↗⚑ flag

Scale limits

1. developerHow the framework's build and type-check times scale in large, multi-thousand-component codebases or monorepos

   weight 2 · round drawn
   React—none0/10

   No evidence addresses build or type-check performance scaling in large multi-thousand-component codebases or monorepos; the pack covers licensing history, JSX, rendering model, and cross-platform use but nothing about build/type-check scalability metrics or benchmarks.

   ⚑ flag

   SolidJS—none0/10

   No evidence addresses build or type-check performance at scale in large multi-thousand-component codebases or monorepos; all evidence concerns runtime rendering performance, bundle size, and developer sentiment, not compile/type-check scaling.

   ⚑ flag

Scales with app size

1. developerBuild large applications that stay fast and maintainable as my team and codebase grow

   weight 2 · round to React
   React~partialcommunity7/10

   React's core design—encapsulated, composable components, incremental adoption, and server streaming for performance—directly supports building and scaling large apps, and community commentary confirms its efficient DOM diffing is well-regarded. However, the evidence lacks concrete large-scale/team-growth case studies or maintainability guidance, and some community feedback (react-comm-6, react-comm-7) flags real complexity/learnability concerns that could affect maintainability at scale. Missing for 10: explicit large-codebase/team case studies, maintainability documentation, and performance benchmarks under scale.

   • [github] “Build encapsulated components that manage their own state, then compose them to make complex UIs.”
   • [github] “you can use as little or as much React as you need”
   • [claimed-docs] “You don’t have to build your whole page in React. Add React to your existing HTML page, and render interactive React components anywhere on …”
   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”
   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [community] “What's interesting is the React team had to implement their own DOM manipulation abstraction, with efficient change management and not inter…”
   • [community] “I think concurrent mode and fibers are kludgy hacks that arise from the problem that only the main thread has access to the DOM... few, if a…”
   • [community] “Reading the React source to try to understand how React works is very challenging. This [tutorial] would have made the perfect guide.”

   proof ↗⚑ flag

   SolidJS~partialcommunity6/10

   Fine-grained reactivity, built-in state management, and DOM performance benchmarks (solid-gh-1, solid-gh-2, solid-comm-9, solid-comm-10) support scalability and maintainability for large apps, and long-term production use is corroborated (solid-comm-10, solid-comm-12). However, evidence also surfaces real caveats for large-team/large-codebase growth: ecosystem gaps (trpc, Framer Motion), slow SolidStart routing with no workaround, alpha dev tools, and non-intuitive API/naming criticized by some devs (solid-comm-12, solid-comm-15, solid-comm-8). missing for 10: case studies of large multi-team codebases at scale, mature dev tooling evidence, resolution of the routing/performance issues noted in criticism.

   • [github] “Declare your state and use it throughout your app, and when a piece of state changes, only the code that depends on it will rerun.”
   • [github] “Performant state management is built-in with Context and Stores: you don't have to reach for a third party library to manage global state”
   • [community] “In some benchmarks Solid appears to be both the fastest and smallest JS library, per a comparison of RealWorld demo implementations.”
   • [community] “Having used Solid on a largish web product for over a year, I am thoroughly convinced and will not return to React. Immediate (non-lazy) rea…”
   • [community] “It's been an absolute joy to write Solid for years, feels more expressive than React with solid-primitives. But ecosystem gaps are real: trp…”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”
   • [community] “Critical take: Solid's API is non-intuitive, same issue as its reactive system, especially compared to Svelte, which 'nails reactivity' with…”
   • [community] “I love Solid: feature parity with React and faster. It's just 1,823 well-organized commits (1,329 from the creator alone), giving confidence…”

   proof ↗⚑ flag

Streaming page loads

1. developerStream server-rendered content so pages get faster perceived loads before all JavaScript arrives

   weight 3 · round to SolidJS
   React~partialclaimed7/10

   React docs explicitly state React supports streaming HTML on the server while data is still being fetched, progressively filling content before JS loads (react-docs-6), and note that full streaming SSR capabilities are typically realized via frameworks like Next.js (react-docs-4, react-docs-7). This is first-party documentation but lacks independent/hands-on corroboration or technical detail on Suspense/streaming APIs. missing for 10: independent verification of streaming behavior, deeper documentation of Suspense/streaming SSR APIs, community benchmarks confirming perceived load improvements.

   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”
   • [claimed-docs] “Frameworks that implement it let you fetch data in asynchronous components that run on the server or even during the build.”

   proof ↗⚑ flag

   SolidJS✓fullclaimed7/10

   Solid's official docs explicitly state it has 'full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible,' directly matching the story of streaming SSR for faster perceived loads. missing for 10: independent/hands-on benchmarks specifically validating streaming SSR performance (community evidence covers general speed/size, not streaming SSR specifically), and more detail on how streaming interacts with hydration in practice.

   • [github] “Solid has full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible.”
   • [github] “With Resources, you can use data loaded from the server like any other piece of state and build a responsive UI for it thanks to Suspense an…”

   proof ↗⚑ flag

Async server data fetching

1. developerFetch data in asynchronous server-rendered components and pass it down to interactive client components

   weight 2 · round drawn
   React~partialclaimed6/10

   React docs confirm async Server Components can fetch data on the server/build time (react-docs-7) and stream HTML while fetching (react-docs-6), but React explicitly delegates the full implementation to frameworks like Next.js/React Router (react-docs-4, react-docs-7) rather than providing it natively. Missing for 10: explicit first-party example of passing fetched server data as props into a 'use client' interactive component, and independent/hands-on corroboration of this specific data flow.

   • [claimed-docs] “Frameworks that implement it let you fetch data in asynchronous components that run on the server or even during the build.”
   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”

   proof ↗⚑ flag

   SolidJS~partialcommunity6/10

   SolidJS supports full SSR/streaming, Resources for server-loaded data, and Suspense to hand off async data to interactive client components (solid-gh-3, solid-gh-4), which directly matches the story. However, community evidence flags SolidStart routing and Suspense as having serious performance/reliability issues with no workaround (solid-comm-15), undermining confidence in this exact async server-to-client flow. Missing for 10: first-party docs/examples specifically demonstrating server components fetching data and passing to client islands, and independent verification that Suspense/streaming works reliably in production SolidStart apps.

   • [github] “With Resources, you can use data loaded from the server like any other piece of state and build a responsive UI for it thanks to Suspense an…”
   • [github] “Solid has full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible.”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Deployment targets

1. developerDeploy my server-rendered app to serverless or edge runtimes without custom infrastructure setup

   weight 2 · round drawn
   React~partialclaimed4/10

   React's own docs acknowledge it is not a deployment platform—it explicitly defers app-building and deployment to full-stack frameworks like Next.js or React Router, while React itself only supplies streaming SSR primitives (react-docs-4, react-docs-6, react-docs-7). There's no first-party evidence of React itself enabling serverless/edge deployment without custom infra; that capability lives in the recommended frameworks, not React core. Missing for 10: direct evidence of React-provided serverless/edge deployment tooling, zero-config deployment guides, or independent confirmation that React apps deploy to edge runtimes without extra framework/infra setup.

   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”
   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [claimed-docs] “Frameworks that implement it let you fetch data in asynchronous components that run on the server or even during the build.”

   proof ↗⚑ flag

   SolidJS~partialcommunity4/10

   GitHub docs explicitly claim 'full SSR and serverless support' (solid-gh-4), which supports the story's core claim, but there's no detail on edge runtime support, zero-config deployment adapters, or independent/hands-on corroboration that deployment actually requires no custom infra setup. Community threads focus on reactivity/DX and don't validate deployment ease; one critique even flags SolidStart routing issues without workaround (solid-comm-15), which is adjacent but not squarely about deployment infra. missing for 10: evidence of specific edge/serverless adapters (Vercel, Netlify, Cloudflare Workers), first-party deployment docs, and independent reports confirming frictionless deploys.

   • [github] “Solid has full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible.”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Meta framework fullstack

1. developerUse an official full-stack meta-framework built on top of the framework for routing and data fetching

   weight 3 · round to React
   React✓fullclaimed8/10

   React's official docs explicitly recommend full-stack meta-frameworks (Next.js, React Router) for building whole apps, and describe framework-level server data fetching and streaming SSR capabilities that these meta-frameworks implement on top of React. This directly matches the story of using an official/recommended full-stack framework for routing and data fetching. Missing for 10: deeper first-party documentation co-authored with a specific meta-framework, and independent hands-on corroboration of the routing/data-fetching integration specifically.

   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”
   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [claimed-docs] “Frameworks that implement it let you fetch data in asynchronous components that run on the server or even during the build.”

   proof ↗⚑ flag

   SolidJS!disputedcontradicted4/10

   Solid's own docs confirm general SSR/serverless/streaming support (solid-gh-4) and community evidence references SolidStart by name, confirming an official meta-framework exists, but a hands-on report explicitly warns to 'avoid ... SolidStart routing which can be very slow with no workaround' (solid-comm-15), directly contradicting a smooth routing/data-fetching experience. Missing for 10: first-party SolidStart documentation of routing and data-loading APIs, and independent benchmarks or resolution of the reported routing performance issue.

   • [github] “Solid has full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible.”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Server data as reactive resources

1. developerTreat server-loaded data as reactive state and build a responsive loading UI for it using resource and suspense primitives

   weight 2 · round to React
   React~partialclaimed5/10

   React docs confirm SSR streaming while fetching data and that frameworks implementing React's model let async components fetch data on the server (react-docs-6, react-docs-7), which aligns with Suspense-based data loading, but the pack never explicitly mentions React's `use()`/resource primitive, client-side reactive resource state, or a hands-on demo of a loading UI built with these primitives. missing for 10: explicit mention of the `use()` hook/resource primitive, first-party guidance on building suspense-based loading UIs, independent developer corroboration of the pattern.

   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [claimed-docs] “Frameworks that implement it let you fetch data in asynchronous components that run on the server or even during the build.”

   proof ↗⚑ flag

   SolidJS!disputedcontradicted5/10

   SolidJS's own docs explicitly promote Resources for server data plus Suspense/concurrent rendering for responsive loading UI (solid-gh-3, solid-gh-4), matching the story exactly. However, a detailed hands-on community critique specifically warns to 'avoid Suspense... which can be very slow with no workaround' (solid-comm-15), directly contradicting the claimed smooth developer experience. Missing for 10: independent benchmarks or docs addressing the reported Suspense performance issue, and additional first-party guidance/examples on resource+suspense patterns.

   • [github] “With Resources, you can use data loaded from the server like any other piece of state and build a responsive UI for it thanks to Suspense an…”
   • [github] “Solid has full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible.”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Server rendering streaming

1. developerRender my application on the server with streaming support to reach interactivity faster

   weight 3 · round to React
   React✓fullclaimed8/10

   React docs explicitly confirm server streaming of HTML while data is still being fetched to progressively fill content before JS loads, and note full-stack frameworks (Next.js, React Router) implement this for building apps. Missing for 10: independent hands-on benchmarks of time-to-interactive improvements and deeper first-party API details (e.g. renderToPipeableStream specifics) beyond the doc snippet.

   • [claimed-docs] “On the server, React lets you start streaming HTML while you’re still fetching data, progressively filling in the remaining content before a…”
   • [claimed-docs] “To build an entire app with React, we recommend a full-stack React framework like Next.js or React Router.”
   • [claimed-docs] “Frameworks that implement it let you fetch data in asynchronous components that run on the server or even during the build.”
   • [github] “React can also render on the server using Node and power mobile apps using React Native.”

   proof ↗⚑ flag

   SolidJS~partialcommunity6/10

   First-party docs explicitly state Solid has full SSR with streaming and progressive hydration to reach interactivity quickly, directly matching the story. However, there's no independent/hands-on corroboration of SSR streaming specifically, and community comments note SolidStart (the SSR meta-framework) routing can be 'very slow with no workaround,' raising some doubt about production SSR performance. Missing for 10: independent benchmarks or hands-on reports validating streaming SSR/time-to-interactive claims, and confirmation that SolidStart's known slowness doesn't undermine the streaming promise.

   • [github] “Solid has full SSR and serverless support, with streaming and progressive hydration to get to interactive as quickly as possible.”
   • [community] “Detailed critique: unpolished naming conventions (both 'use' and 'create' prefixes), unhelpful community with unanswered questions, lacking …”

   proof ↗⚑ flag

Accessibility testing

1. developerGet built-in accessibility warnings during development instead of relying on separate audit tools

   weight 2 · round drawn
   React—none0/10

   No evidence in the pack mentions accessibility warnings, a11y linting, or dev-mode audit tooling built into React; React's dev warnings historically covered things like prop-types and hooks, but no such accessibility-specific feature is documented here.

   ⚑ flag

   SolidJS—none0/10

   No evidence of built-in accessibility linting/warnings during development; evidence covers reactivity, performance, SSR, and community sentiment but nothing about accessibility auditing features.

   ⚑ flag

Component testing utilities

1. developerUse official testing utilities to render and interact with components in isolation

   weight 3 · round drawn
   React—none0/10

   No evidence pack mentions official testing utilities like React Testing Library, react-test-renderer, or any first-party testing tooling for rendering/interacting with components in isolation; the pack only covers JSX, rendering, server streaming, and licensing/community discussion.

   ⚑ flag

   SolidJS—none0/10

   The evidence pack contains no mention of an official Solid Testing Library, @solidjs/testing-library, or any first-party utility for rendering/interacting with components in isolation for tests; all citations concern reactivity, performance, SSR, and general community sentiment.

   ⚑ flag

E2e testing integration

1. developerIntegrate official end-to-end testing tools that work out of the box with the framework's dev server

   weight 2 · round drawn
   React—none0/10

   No evidence of React shipping or officially integrating any end-to-end testing tool (e.g., Cypress, Playwright) with its dev server; the docs focus on component composition, rendering, and framework recommendations (Next.js, React Router) but never mention E2E testing tooling.

   ⚑ flag

   SolidJS—none0/10

   No evidence of any official end-to-end testing tool (e.g., Playwright/Cypress integration) or dev-server-specific E2E setup for SolidJS; the evidence pack only covers reactivity, performance, and general community sentiment.

   ⚑ flag

State logic unit testing

1. developerUnit test my reactive state and logic without needing to render the DOM

   weight 2 · round drawn
   React—none0/10

   No evidence in the pack addresses testing React hooks/state logic in isolation without rendering to the DOM (e.g., no mention of React Testing Library, @testing-library/react-hooks, or headless test utilities); the docs focus on rendering, JSX, and server/native usage.

   ⚑ flag

   SolidJS—none0/10

   No evidence in the pack addresses unit testing SolidJS reactive primitives (signals, effects, memos) outside the DOM; all citations focus on rendering performance, DX, and community sentiment rather than testability or headless state logic. Missing for 10: any mention of a testing utility, headless signal testing patterns, or documentation/community proof that state logic can be tested without rendering.

   ⚑ flag

Ide autocompletion

1. developerGet accurate autocompletion and inline type errors in my editor via a language service integration

   weight 3 · round drawn
   React—none0/10

   No evidence of React shipping or documenting a language service/editor integration (e.g., TypeScript types, LSP, VS Code plugin) for autocompletion or inline type errors; evidence pack only covers JSX, rendering, and licensing topics.

   ⚑ flag

   SolidJS—none0/10

   No evidence in the pack mentions TypeScript language service integration, editor autocompletion, or inline type-checking for SolidJS's JSX; comments only cover reactivity, performance, and general DX opinions. Missing for 10: any mention of TypeScript support, JSX type definitions, or editor/IDE tooling integration.

   ⚑ flag

Typed props inference

1. developerGet automatic type inference for component props and emitted events without writing extra type annotations

   weight 3 · round drawn
   React—none0/10

   The evidence pack contains no mention of TypeScript, prop types, or automatic type inference features; only general React architecture, docs, and community licensing discussion are covered.

   ⚑ flag

   SolidJS—none0/10

   The evidence pack contains no mention of TypeScript prop/type inference, JSX typing, or event typing for SolidJS components; all citations focus on reactivity, performance, and general DX sentiment. missing for 10: any documentation or discussion of TypeScript type inference for props/events, JSX.IntrinsicElements typing, or community confirmation of type-safety DX.

   ⚑ flag

Typed templates

1. developerGet compile-time type checking inside my component templates, not just script blocks

   weight 2 · round drawn
   React—none0/10

   The evidence pack contains no mention of TypeScript integration, TSX type-checking, or any compile-time type validation within JSX markup; it only covers JSX syntax, licensing history, and general architecture discussions. Missing for 10: any documentation of TypeScript/TSX support, type-checking of JSX expressions or props, or tooling (e.g. tsc, IDE plugins) that validates types inside component markup.

   • [claimed-docs] “This markup syntax is called JSX. It is a JavaScript syntax extension popularized by React.”

   proof ↗⚑ flag

   SolidJS—none0/10

   The evidence pack contains no mention of TypeScript, JSX type-checking, or compile-time template type safety; it focuses on reactivity, performance, and general developer sentiment. Missing for 10: any documentation or mention of TypeScript support, typed JSX/template checking, or tooling (e.g. VSCode/IDE integration) that validates component templates at compile time.

   ⚑ flag

Typescript version support

1. developerWhich TypeScript versions the framework officially supports so I can avoid compatibility breaks when upgrading either one

   weight 2 · round drawn
   React—none0/10

   No evidence pack item mentions TypeScript version support, compatibility matrix, or official TS versioning policy for React.

   ⚑ flag

   SolidJS—none0/10

   No evidence in the pack mentions any officially supported TypeScript version, compatibility matrix, or upgrade guidance for TypeScript alongside SolidJS releases; all citations focus on reactivity, performance, and general dev experience.

   ⚑ flag