Registry / testing / rollup-plugin-coverage

rollup-plugin-coverage

library0.1.4jsnpmunverified

Rollup plugin for Istanbul unit test coverage. Version 0.1.4 provides integration with Istanbul instrumenter for code coverage reporting in Rollup and Karma. It offers options for include/exclude patterns, coverage options, and sourcemap support. The plugin is no longer actively maintained; users are advised to migrate to @rollup/plugin-istanbul or official Rollup coverage plugins.

testing devops

npm install rollup-plugin-coverage

package ↗homepage ↗

INSTALL

IMPORT

SIG · ROLLUP-PLUGIN-COVE

rollup-plugin-coverage

testingjavascriptv0.1.4

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–223 runs

build_error

glibc

node 18–223 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

default

✓ import coverage from 'rollup-plugin-coverage'

✗ const coverage = require('rollup-plugin-coverage')

ESM default import; CJS require works but is not idiomatic for Rollup configs

coverage

✓ import coverage from 'rollup-plugin-coverage'

✗ import { coverage } from 'rollup-plugin-coverage'

Package exports a default export only, not named.

coverage

✓ const coverage = require('rollup-plugin-coverage').default

✗ const coverage = require('rollup-plugin-coverage')

CommonJS requires .default access due to ESM default export

Configures Rollup with Istanbul coverage, excluding test files and setting ES module instrumentation.

import { rollup } from 'rollup'; import coverage from 'rollup-plugin-coverage'; rollup({ input: 'src/main.js', plugins: [ coverage({ exclude: ['test/**/*.js', 'node_modules/**'], coverageOptions: { esModules: true } }) ] }).then(bundle => bundle.write({ file: 'dist/bundle.js', format: 'es' }));

Debug

Known issues

deprecatedPackage has not been updated since 2018 and is effectively deprecated. Use @rollup/plugin-istanbul instead.

fix

Replace with @rollup/plugin-istanbul: npm install @rollup/plugin-istanbul and update import.

affects: >=0.0.0

gotchaPlugin must be placed before other plugins (like babel) to avoid instrumentation issues.

fix

Place coverage plugin first in the plugins array.

affects: >=0.0.0

gotchaCoverage variable is not automatically captured in browser testing; requires manual extraction.

fix

Use Karma with karma-coverage for automatic browser coverage collection.

affects: >=0.0.0

gotchaSourcemap support requires setting sourceMapWithCode: true in coverageOptions.

fix

Add coverageOptions: { sourceMapWithCode: true }.

affects: >=0.0.0

Errors

Common errors & fixes

Error: Cannot find module 'rollup-plugin-coverage'

Package not installed or missing from node_modules.

fix

Run npm install rollup-plugin-coverage --save-dev

TypeError: coverage is not a function

Using named import instead of default import.

fix

Change import { coverage } to import coverage

Upgrade

Version history

0.1.4latest on npm

Audit

Dependencies

rolluprequiredPeer dependency for Rollup bundler API

istanbulrequiredCoverage engine used internally

Agent activity

19 hits · last 30 days

node

Amazon

Resources

packagehttps://www.npmjs.com/package/rollup-plugin-coverage ↗

homepagehttps://gitlab.com/kflash/rollup-plugin-coverage ↗