istanbul-lib-source-maps
npmv5.0.6Source maps support for istanbul
Adopt with care
istanbul-lib-source-maps is usable, with caveats. Last published 799 days ago.
- AAdoption: grade A, Excellent.
55.8M downloads per week and 5 known dependents.
- DMaintenance: grade D, Poor — a real concern.
Last published 799 days ago.
- BWeight: grade B, Good.
Pulls in 6 transitive packages, about 408 KB installed.
- ASupply chain: grade A, Excellent.
No install scripts, 4 maintainers, and a contained dependency surface.
- ALicense: grade A, Excellent.
BSD-3-Clause — permissive, with no copyleft found in the dependency tree.
Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.
Install cost
What you actually take on by adding istanbul-lib-source-maps to a project.
Runtime packages this one declares itself.
Distinct packages in the full runtime tree, deduplicated the way a package manager would.
Unpacked size of this package plus its entire runtime tree.
Longest resolved dependency chain below this package.
Licenses in the dependency tree
Every license you inherit by installing istanbul-lib-source-maps, not just its own. Check this before a legal review, not after.
Compatibility
- Node.js
- node >=10
- Module format
- CommonJS only
- TypeScript
- No bundled types
- Install scripts
- None
istanbul-lib-source-maps vs the alternatives
Packages solving a similar problem in the npm ecosystem, compared on the signals that drive an adoption decision.
| Package | Weekly downloads | Dependents | License | Last release |
|---|---|---|---|---|
| istanbul-lib-source-mapsthis page | 55.8M | 5 | BSD-3-Clause | 2 years ago |
| @vitest/istanbul-lib-source-maps | 25K | 2 | MIT | 1 day ago |
| vlq | 9.5M | 2 | MIT | 1 day ago |
| convert-source-map | 0 | 7 | MIT | 1 day ago |
| @jridgewell/gen-mapping | 163.4M | 4 | MIT | 1 day ago |
| loose-envify | 65M | 2 | MIT | 1 day ago |
Dependencies
Declared by istanbul-lib-source-maps v5.0.6. Runtime dependencies are installed with the package; dev dependencies are not.
Dev (4)
Used by
Popular packages that depend on istanbul-lib-source-maps.
Jest's reporters
Fire events the same way the user does
AST-aware v8-to-istanbul
Istanbul coverage provider for Vitest
An implementation of WHATWG EventTarget interface.
Relationship graph
Dependencies (left) and dependents (right) of istanbul-lib-source-maps.
Frequently installed together
Base reporting library for istanbul
Data library for istanbul coverage objects
istanbul reports
TypeScript execution environment and REPL for node.js, with source map support
TypeScript definitions for istanbul-lib-coverage
TypeScript definitions for istanbul-lib-report
TypeScript definitions for istanbul-reports
An extremely fast JavaScript and CSS bundler and minifier.
React is a JavaScript library for building user interfaces.
React package for working with the DOM.
An AST-based pattern checker for JavaScript.
Custom jest matchers to test the state of the DOM
Release history
No releases in the last two years, typically about 23 days apart.
| Version | Published | Size | License |
|---|---|---|---|
| 5.0.6latest | 2 years ago | 37 KB | BSD-3-Clause |
| 5.0.5 | 2 years ago | 36 KB | BSD-3-Clause |
| 5.0.4 | 2 years ago | 36 KB | BSD-3-Clause |
| 5.0.0 | 2 years ago | 34 KB | BSD-3-Clause |
| 4.0.1 | 4 years ago | 33 KB | BSD-3-Clause |
| 4.0.0 | 6 years ago | 33 KB | BSD-3-Clause |
| 4.0.0-alpha.5 | 6 years ago | 32 KB | BSD-3-Clause |
| 4.0.0-alpha.4 | 6 years ago | 32 KB | BSD-3-Clause |
| 4.0.0-alpha.3 | 6 years ago | 32 KB | BSD-3-Clause |
| 4.0.0-alpha.2 | 7 years ago | 31 KB | BSD-3-Clause |
| 4.0.0-alpha.1 | 7 years ago | 31 KB | BSD-3-Clause |
| 4.0.0-alpha.0 | 7 years ago | 31 KB | BSD-3-Clause |
| 3.0.6 | 7 years ago | 31 KB | BSD-3-Clause |
| 3.0.5 | 7 years ago | 29 KB | BSD-3-Clause |
| 3.0.4 | 7 years ago | 29 KB | BSD-3-Clause |
Overview
istanbul-lib-source-maps is an npm package that source maps support for istanbul. It is extremely widely used, with about 55.8M downloads per week and 5 known dependents in the graph. The latest version is 5.0.6, released under the BSD-3-Clause license.
Who should use it
Teams working in the npm ecosystem who need source maps support for istanbul and value a battle-tested, widely-adopted solution.
When not to use it
Consider an alternative if you need to have first-class TypeScript types out of the box, or if a more actively-maintained option better fits your npm stack.
Pros
- Large, well-established user base (55.8M weekly downloads).
- Clear open-source license (BSD-3-Clause).
Cons
- No bundled TypeScript types (may require a separate @types package).
Auto-generated from collected registry metadata. No external claims are inferred.
Maintainers
Frequently asked questions
Should I use istanbul-lib-source-maps?
istanbul-lib-source-maps is usable, with caveats. Last published 799 days ago.
How do I install istanbul-lib-source-maps?
Run `npm install istanbul-lib-source-maps` to add istanbul-lib-source-maps to your npm project.
How many dependencies does istanbul-lib-source-maps have?
istanbul-lib-source-maps declares 7 direct dependencies and pulls in 6 packages in total once its runtime tree is resolved totalling about 408 KB on disk.
What license is istanbul-lib-source-maps released under?
istanbul-lib-source-maps is distributed under the BSD-3-Clause license. Its dependency tree also includes: BSD-3-Clause, MIT.
How popular is istanbul-lib-source-maps?
istanbul-lib-source-maps has approximately 55,767,087 downloads per week and 5 known dependent packages.
Is istanbul-lib-source-maps still maintained?
The most recent release of istanbul-lib-source-maps (v5.0.6) was published 2 years ago.
Does istanbul-lib-source-maps run install scripts?
No. istanbul-lib-source-maps does not define preinstall, install, or postinstall scripts, so installing it does not execute publisher-supplied code.