istanbuljs/nyc

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the Istanbul command line interface

Stars: 5.8k
Forks: 362
Open beginner issues: 0
Indexed issues: 188

Dominant language: JavaScript
License: ISC
Last GitHub push: May 17, 2026
Latest indexed: Sep 17, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Open All

188 open issues indexed

Feature request: ability to stop nyc process propagation Open

enhancement Great First Contribution

istanbuljs/nyc#36 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
does not provide useful feedback if no coverage output exists Open

enhancement Great First Contribution

istanbuljs/nyc#136 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add a new `profile` option. Open

enhancement Great First Contribution help wanted

istanbuljs/nyc#144 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 17, 2026
--all should report which files it failed to instrument Open

enhancement Great First Contribution help wanted needs-investigation

istanbuljs/nyc#175 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
set defaults for function and branch coverage as well Open

enhancement Great First Contribution

istanbuljs/nyc#302 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
document migrating from istanbul to nyc configuration Open

doc help wanted high-priority Istanbul 1.0 pinned

istanbuljs/nyc#320 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Can I report only to terminal (no coverage folder)? Open

enhancement Great First Contribution

istanbuljs/nyc#336 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Feature: rename/suppress path root Open

enhancement Great First Contribution help wanted

istanbuljs/nyc#370 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
nyc check-coverage: new command flag Open

enhancement Great First Contribution help wanted

istanbuljs/nyc#432 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
add more tests for produce-source-map logic Open

help wanted pinned

istanbuljs/nyc#438 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Shorthand for all 100% Open

enhancement Great First Contribution

istanbuljs/nyc#462 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
add pipe functionality to nyc for instrumentation Open

enhancement pinned

istanbuljs/nyc#516 · 4 comments · 0 reactions · 2 assignees · Indexed Sep 17, 2026
feat: make `nyc instrument` more clever about file extension Open

enhancement Great First Contribution triaged

istanbuljs/nyc#573 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
folders created by nyc Open

enhancement Great First Contribution

istanbuljs/nyc#605 · 6 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
fix: correctly report error numbers in stack traces Open

blocked pinned triaged

istanbuljs/nyc#619 · 29 comments · 20 reactions · 0 assignees · Indexed Sep 17, 2026
todo: figure out how to instrument .mjs files Open

enhancement pinned

istanbuljs/nyc#659 · 18 comments · 7 reactions · 0 assignees · Indexed Sep 17, 2026
Provide --complete-copy Option for Instrumentation as in Istanbul Open

enhancement Great First Contribution help wanted triaged

istanbuljs/nyc#678 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Coverage for Single-File Vue Components Not Found Open

bug Great First Contribution help wanted high-priority triaged

istanbuljs/nyc#718 · 12 comments · 9 reactions · 0 assignees · Indexed Sep 17, 2026
files using `package` word are not included in the coverage report Open

pinned

istanbuljs/nyc#796 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Exit code not preserved on JS heap out of memory (134) from mocha Open

bug Great First Contribution upstream bug

istanbuljs/nyc#798 · 6 comments · 11 reactions · 0 assignees · Indexed Sep 17, 2026
Coverage gives a false positive with a || branch Open

bug pinned

istanbuljs/nyc#841 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Feature Request: nyc report should be able to take a list of --temp-directory Open

enhancement Great First Contribution

istanbuljs/nyc#879 · 13 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
Request: Warn when ignored lines are actually reached Open

help wanted pinned

istanbuljs/nyc#919 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Using the nested structure in the summarizer Open

help wanted needs-investigation pinned question

istanbuljs/nyc#932 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
A way to report invalid NYC configuration. Open

enhancement Great First Contribution

istanbuljs/nyc#966 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Feature Request: Ignore coverage by environment variables Open

pinned

istanbuljs/nyc#969 · 13 comments · 8 reactions · 0 assignees · Indexed Sep 17, 2026
nyc generates no output on TravisCI Open

bug help wanted needs-investigation pinned

istanbuljs/nyc#993 · 16 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
report: skip-full behavior on full coverage is weird Open

pinned

istanbuljs/nyc#1020 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Coverage fails when run with OxProject Open

doc help wanted pinned

istanbuljs/nyc#1035 · 11 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
ReferenceError: Unsupported reference to 'super' Open

pinned upstream bug

istanbuljs/nyc#1037 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
testing: Use isolated cwd for `--all` tests Open

pinned

istanbuljs/nyc#1096 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Source Map issues with Browserify and Webpack Open

bug help wanted pinned

istanbuljs/nyc#1130 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
docs: Need to document `parser-plugins` Open

pinned

istanbuljs/nyc#1132 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Standard assert error message changes when test is run through nyc Open

bug pinned upstream bug

istanbuljs/nyc#1142 · 10 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
nyc-config-typescript and decorators Open

doc

istanbuljs/nyc#1437 · 11 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Feature Request: Instrument option to generate a baseline coverage file Open

enhancement pinned

istanbuljs/nyc#1202 · 11 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Feature Request: Allow caching with the standalone instrument command Open

istanbuljs/nyc#1203 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Enabling nyc to generate reports from coverage.raw.json Open

istanbuljs/nyc#1249 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Extended properties cannot be override Open

istanbuljs/nyc#1286 · 8 comments · 8 reactions · 0 assignees · Indexed Sep 17, 2026
Nyc on ESM Node.js 13 (no babel) Open

istanbuljs/nyc#1287 · 31 comments · 21 reactions · 0 assignees · Indexed Sep 17, 2026
Pass through "file" option to reporters Open

istanbuljs/nyc#1295 · 5 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Merging coverage files doesn't produce accurate cumulative result Open

istanbuljs/nyc#1302 · 26 comments · 6 reactions · 0 assignees · Indexed Sep 17, 2026
Possible to load source code from source map for coverage report? Open

istanbuljs/nyc#1307 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
The --cwd option breaks instrumentation on Windows Open

istanbuljs/nyc#1310 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Merged results have a lower coverage rating Open

istanbuljs/nyc#1333 · 11 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
Generate report from a JSON file merged from `nyc merge` Open

istanbuljs/nyc#1342 · 2 comments · 7 reactions · 0 assignees · Indexed Sep 17, 2026
running nyc instrument ./input ./output on files containing .js and .vue Open

istanbuljs/nyc#1345 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 17, 2026
[HELP!] Coverage with source-maps for pre-compiled typescript code Open

istanbuljs/nyc#1348 · 6 comments · 7 reactions · 0 assignees · Indexed Sep 17, 2026
Some TypeScript files missing in coverage Open

istanbuljs/nyc#1351 · 3 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
nyc test coverage not working when type:module is activated Open

istanbuljs/nyc#1353 · 12 comments · 27 reactions · 0 assignees · Indexed Sep 17, 2026

istanbuljs/nyc

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