isparta

library4.1.1jsnpmunverified

A code coverage tool for ES6 using Babel, built on top of Istanbul. Latest version is 4.1.1, released to support Babel 6.x. The project is unmaintained as of 2016 and deprecated in favor of Istanbul with its own Babel support. It provides CLI and Karma integration for instrumenting ES6 code, but lacks updates and may not work with modern Babel versions. Consider using babel-plugin-istanbul or @istanbuljs/nyc-config-babel instead.

testing

npm install isparta

github ↗package ↗

INSTALL

IMPORT

SIG · ISPARTA

isparta

testingjavascriptv4.1.1

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 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

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

Isparta

✓ const Isparta = require('isparta');

✗ import Isparta from 'isparta';

isparta v4.1.1 does not support ESM imports; use CommonJS require.

instrumenter

✓ var isparta = require('isparta'); // then in karma config: instrumenters: { isparta: isparta }

✗ import isparta from 'isparta';

Karma instrumenter expects CommonJS module export.

CLI

✓ babel-node node_modules/.bin/isparta cover --report text node_modules/.bin/_mocha

✗ node node_modules/.bin/isparta cover --report text -- ...

Must use babel-node to transpile before running isparta CLI.

Demonstrates installation, Babel configuration, CLI usage, and Karma integration for ES6 code coverage.

// Install dependencies npm install --save-dev isparta babel-core babel-preset-es2015 mocha // Create a .babelrc file // { "presets": ["es2015"] } // Run coverage with isparta CLI npx babel-node node_modules/isparta/bin/isparta cover --report text --report html node_modules/mocha/bin/_mocha -- --reporter dot // For Karma, add to karma.conf.js: // coverageReporter: { // instrumenters: { isparta: require('isparta') }, // instrumenter: { '**/*.js': 'isparta' } // }

isparta --version

Debug

Known issues

deprecatedisparta is no longer maintained. Use babel-plugin-istanbul or @istanbuljs/nyc-config-babel instead.

fix

Switch to nyc with babel-plugin-istanbul: npm install --save-dev nyc babel-plugin-istanbul

affects: all

breakingBabel 6 support changed in v4.0.0; requires babel-core@6 and presets.

fix

If using Babel 5, stick with isparta@3.x. For Babel 6+, use isparta@4.x with appropriate presets.

affects: >=4.0.0

gotchaCLI must be run via babel-node; otherwise it fails with SyntaxError on ES6 modules.

fix

Use npx babel-node node_modules/.bin/isparta ... or add to scripts in package.json with babel-node.

affects: all

breakingKarma integrator requires a specific fork of karma-coverage; official karma-coverage may not work.

fix

Use douglasduteil/karma-coverage#next or upgrade to nyc and karma-nyc-reporter.

affects: >=4.0.0

gotchaOptions like --include and --exclude may not work as expected due to underlying istanbul compatibility.

fix

Test thoroughly; consider using .istanbul.yml for configuration but beware of breaking changes.

affects: all

Errors

Common errors & fixes

SyntaxError: Unexpected token import

Running isparta CLI with node instead of babel-node

fix

Use babel-node node_modules/.bin/isparta cover ...

Error: Cannot find module 'babel-core'

Missing babel-core dependency

fix

Install babel-core: npm install --save-dev babel-core

TypeError: Cannot read property 'babel' of undefined

Incorrect Karma configuration; instrumenterOptions missing

fix

Check karma-coverage fork and use proper instrumenterOptions: { isparta: { babel: { presets: ['es2015'] } } }

Error: Coverage file could not be written

Incompatibility between istanbul version and isparta

fix

Use isparta@3.5.3 with istanbul@0.4.0 or check node_modules for conflicts

Upgrade

Version history

4.1.1latest on npm

Audit

Dependencies

babel-corerequiredRequired for transpilation; version compatibility is critical.

istanbulrequiredUnderlying coverage engine; isparta wraps it.

Agent activity

10 hits · last 30 days

node

Resources

githubhttps://github.com/douglasduteil/isparta ↗

packagehttps://www.npmjs.com/package/isparta ↗