Registry / devops / rollup-plugin-unassert

rollup-plugin-unassert

library0.6.0jsnpmunverified

Rollup plugin to remove assertion calls (e.g., assert, console.assert) from bundles using Unassert. Current stable version: 0.6.0. Low release cadence (last release 2020). Key differentiator: integrates Unassert into Rollup builds, removing debug assertions from production code, improving bundle size and performance. Alternatives like babel-plugin-unassert require Babel; this plugin is Rollup-native.

devops testing

npm install rollup-plugin-unassert

github ↗package ↗

INSTALL

IMPORT

SIG · ROLLUP-PLUGIN-UNAS

rollup-plugin-unassert

devopsjavascriptv0.6.0

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.

unassert

✓ import unassert from 'rollup-plugin-unassert'

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

ESM-only; CJS require works but may cause issues with Rollup's plugin resolution.

default import

✓ import unassert from 'rollup-plugin-unassert'

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

Default export only; named import does not exist.

TypeScript type (if needed)

✓ import type { RollupPluginUnassertOptions } from 'rollup-plugin-unassert'

Types are not bundled; you may need to define your own or use @types.

Basic Rollup config with rollup-plugin-unassert to remove assertion calls from build output.

import unassert from 'rollup-plugin-unassert'; export default { input: 'src/index.js', output: { file: 'dist/bundle.js', format: 'esm' }, plugins: [ unassert() ] };

Debug

Known issues

gotchaThe plugin removes assertion calls only in production builds; during development assertions remain. Ensure it is used in production config only.

fix

Conditionally add plugin based on process.env.NODE_ENV or similar.

affects: >=0.0.0

gotchaSourcemap support: setting sourcemap: false hides assert calls when debugging. Leave as default true to keep sourcemaps accurate.

fix

Do not set sourcemap: false unless you understand the debugging tradeoff.

affects: >=0.0.0

deprecatedPackage is in maintenance mode; no active development. Consider using a more actively maintained alternative.

fix

Evaluate alternatives like babel-plugin-unassert or manual removal.

affects: >=0.6.0

Errors

Common errors & fixes

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

Missing local installation or incorrect import path.

fix

npm install --save-dev rollup-plugin-unassert

TypeError: unassert is not a function

Using named import instead of default import.

fix

Use import unassert from 'rollup-plugin-unassert' (without curly braces).

! RollupError: Could not resolve 'unassert' from ...

Unassert internal dependency not resolved; Rollup may fail if not installed.

fix

Ensure unassert is installed as a dependency: npm install unassert

Upgrade

Version history

0.6.0latest on npm

Audit

Dependencies

rolluprequiredPeer dependency for Rollup plugin system.

unassertrequiredCore dependency providing assertion removal logic.

Agent activity

8 hits · last 30 days

node

Resources

githubhttps://github.com/mourner/rollup-plugin-unassert ↗

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