Show HN: tsv has fast formatters and parsers for Svelte, TypeScript/JS, CSS
tsv is a set of performance-focused language tools for the Web. Today it ships formatters and parsers for TypeScript/JS, CSS, and Svelte, including a vscode/openvsx extension. JSON and HTML are planned, maybe linting after. The readme has a loose roadmap - https://github.com/fuzdev/tsv tsv's benchmarks show how the Web's newer native tools have some performance left on the table. Formatting TypeScript, tsv is more than twice as fast as oxfmt, and is smaller and uses less memory - https://tsv.fuz
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Recorded metrics
points · 2 votes
2026-11-06 22:15:23.267Z
cumulative since publication
Research analysis
Project record
Repository: fuzdev/tsv. Source account: tsv is a set of performance-focused language tools for the Web. Today it ships formatters and parsers for TypeScript/JS, CSS, and Svelte, including a vscode/openvsx extension. JSON and HTML are planned, maybe linting after. The readme has a loose roadmap - https://github.com/fuzdev/tsv tsv's benchmarks show how the Web's newer native tools have some performance left on the table. Formatting TypeScript, tsv is more than twice as fast as oxfmt, and is smaller and uses less memory - https://tsv.fuz
Observed adoption & comparisons
Source votes: 2 votes (Nov 6, 2026 UTC; cumulative since publication); previous same-scope observation: 2 (Nov 6, 2026 UTC). These observations do not establish demand growth. Recent records to compare: “astral-sh/ruff” (GitHub Trending, Nov 6, 2026); “microsoft/vscode” (GitHub Trending, Nov 6, 2026). Shared themes are navigation hints; they have not been verified as the same need or independent corroboration.
Adoption decision
Evaluate it against the tool or manual workflow it would replace. The stored record supports discovery; it does not yet establish reliability, lower operating cost or commercial adoption.
Unverified requirements
Not verified: license permissions, required hardware, installation steps, maintenance status and a representative task with its failure cases.
Next test
Choose one real task and a current alternative. Record the commit, environment, input, output, elapsed time and failure behavior; retain the result before recommending adoption.