JSR (JavaScript Registry): coverage and access

What it covers

Geography and granularity

Geography: Use the geography stated by the source; coverage can vary by dataset and release.

Granularity: Research modern TypeScript package adoption, documentation quality, runtime compatibility, and emerging developer-tool/data-client niches outside the legacy npm registry.

Source type: TypeScript/JavaScript package registry

Potential use

Research modern TypeScript package adoption, documentation quality, runtime compatibility, and emerging developer-tool/data-client niches outside the legacy npm registry. Good fit for TypeScript-first SDKs, edge/serverless tooling, API clients, data utilities, and founders targeting Deno and cross-runtime developers.

Access and cost

Public source

Public registry browsing and package consumption are available through JSR; publishing uses deno publish and JSR authentication. Individual package licenses and usage terms apply.

Cost: Current price was not established in this review; check the provider's access terms.

Update cadence: Release cadence was not normalized in this review; check the source's dates, update notes, and API limits before comparing periods.

• Provider page ↗
• Documentation and access details ↗Check the provider's current terms and instructions before use

Interpret carefully

Limits that affect the decision

JSR is a distinct and evolving ecosystem; registry activity should not be treated as representative of all JavaScript usage, and Deno's documentation does not promise a universal download-statistics dataset.

Release cadence was not normalized in this review; check the source's dates, update notes, and API limits before comparing periods.

This record summarizes source documentation; Jon Bishop did not conduct an independent audit of the underlying dataset.