Svelte vs React: source lines of code compared

The Svelte vs React comparison on OctoCounts shows side-by-side source line counts for sveltejs/svelte and react/react, counted under the rules and on the dates stated below: files, total lines, code lines, comment lines, blank lines, and per-language totals, pinned to the exact commits listed below.

This page compares the source lines of code (SLOC) of sveltejs/svelte and react/react using cached OctoCounts reports. Code size is not code quality: a larger count only means more source material, not a better or worse project.

As of 2026-11-04, sveltejs/svelte contains 100,716 total lines (58,885 code) across 506 files, while react/react contains 459,809 total lines (364,361 code) across 2,133 files as of 2026-11-01. react/react has about 6.2x the counted code lines of sveltejs/svelte under the same engine and counting rules. Code size is not code quality: a larger count only means more source material, not a better or worse project.

Metricsveltejs/sveltereact/react
Files5062,133
Total lines100,716459,809
Code lines58,885364,361
Comment lines25,23759,105
Blank lines16,59436,343
Languages counted811

Top languages in sveltejs/svelte: JavaScript (78.0% of code), TypeScript (14.1% of code), YAML (6.1% of code). Top languages in react/react: JavaScript (63.5% of code), Rust (17.5% of code), TypeScript (16.4% of code). JavaScript, TypeScript, JSON appear in both top language lists; YAML, HTML appear only in sveltejs/svelte's top languages; Rust, CSS appear only in react/react's top languages.

Methodology: both counts come from cached OctoCounts reports generated with tokei. sveltejs/svelte was counted at ref main (commit 7775f73b7cbe) on 2026-11-04; react/react was counted at ref 1d34f91dfde6bba84d08b683aaba164c7194dacb (commit 1d34f91dfde6) on 2026-11-01. See the counting methodology for ignored directories and analysis options.

Both reports use the same engine and effective counting rules. Repository declarations, when enabled, are specific to each repository. sveltejs/svelte: tokei-15.0.0, policy directories-v1; docs excluded, tests excluded, generated excluded. Excluded directory names: .cache, .generated, .git, .next, __tests__, build, dist, doc, docs, documentation, fixtures, gen, generated, node_modules, target, test, tests, vendor. Ignored languages: none. Repository declarations: off. Exclusions are rule-based; they do not prove that every test, document or generated file was removed. react/react: tokei-15.0.0, policy directories-v1; docs excluded, tests excluded, generated excluded. Excluded directory names: .cache, .generated, .git, .next, __tests__, build, dist, doc, docs, documentation, fixtures, gen, generated, node_modules, target, test, tests, vendor. Ignored languages: none. Repository declarations: off. Exclusions are rule-based; they do not prove that every test, document or generated file was removed.

About this comparison

Background observations recorded on 2026-10-16; language descriptions here are historical context, not claims about the current filtered shares. Use this page's measured language breakdown for current counts. Repository layout before counting filters: sveltejs/svelte is the Svelte monorepo: the compiler, runtime packages, tests, and documentation, while react/react is the React monorepo — the React packages plus fixtures, documentation site content, and test infrastructure. Both repositories are framework source trees, not applications built with them, and both archives were counted on the dates shown in the methodology line above.

The counts say nothing about the size of what ships to a browser: Svelte moves work into build output and React ships a runtime subset, so neither repository's line count tracks bundle size, runtime behavior, or app performance.

Sources: sveltejs/svelte repository (compiler and packages) · react/react repository structure (packages/ monorepo). Statements verified 2026-10-16.

Evidence and next steps:

Saved reports remain subject to cache cleanup and replacement. Export their JSON for durable citation; live report URLs can change.

Note: code size is not code quality. OctoCounts only reports reproducible line counts and makes no claim that either project is better.

Compare FAQ

Which has more lines of code, sveltejs/svelte or react/react?

As of 2026-11-04, sveltejs/svelte contains 100,716 total lines (58,885 code) across 506 files, while react/react contains 459,809 total lines (364,361 code) across 2,133 files as of 2026-11-01. react/react has about 6.2x the counted code lines of sveltejs/svelte under the same engine and counting rules. Code size is not code quality: a larger count only means more source material, not a better or worse project.

Does more source lines of code mean more complexity?

Not necessarily. SLOC measures size, not complexity, quality, or maintainability. A larger codebase can mean more features, more generated or vendored code, more verbose language idioms, or more tests — none of which imply the code is harder to work with. Use SLOC to gauge the scale of what you'd be reading or maintaining, not as a quality signal for sveltejs/svelte, react/react, or any repository.

How is this comparison calculated?

Methodology: both counts come from cached OctoCounts reports generated with tokei. sveltejs/svelte was counted at ref main (commit 7775f73b7cbe) on 2026-11-04; react/react was counted at ref 1d34f91dfde6bba84d08b683aaba164c7194dacb (commit 1d34f91dfde6) on 2026-11-01. See the counting methodology for ignored directories and analysis options.

Can I compare a different branch, tag, or commit?

Yes. This page shows the default branch for each repository. Use the interactive comparison tool to pick any public GitHub repository, branch, tag, or commit SHA for both sides and get a fresh side-by-side report.