Registry / devops / rollup-plugin-jess

rollup-plugin-jess

library1.0.8-alpha.8jsnpmunverified

Rollup plugin that compiles Jess CSS preprocessor files into JavaScript modules at build time. Currently at v1.0.8-alpha (alpha stage), with low release cadence. Requires Rollup ^2.0.0 as a peer dependency. Differentiators: dedicated integration for the Jess language, TypeScript declarations included. Alternatives like generic CSS rollup plugins (e.g., rollup-plugin-postcss) require additional configuration for custom syntaxes.

devops

npm install rollup-plugin-jess

package ↗

INSTALL

IMPORT

SIG · ROLLUP-PLUGIN-JESS

rollup-plugin-jess

devopsjavascriptv1.0.8-alpha.8

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 export (jess)

✓ import jess from 'rollup-plugin-jess'

✗ const jess = require('rollup-plugin-jess');

ESM only; CommonJS require will not work because the package is type: module and uses ESM syntax. For Rollup configs in CJS, use dynamic import: const jess = (await import('rollup-plugin-jess')).default;

jess (as named export)

✓ import { jess } from 'rollup-plugin-jess'

✗ import jess from 'rollup-plugin-jess'

The plugin also exports a named export `jess` which is the same as default. Both work, but importing as default is more idiomatic due to single-function usage.

type JessOptions

✓ import type { JessOptions } from 'rollup-plugin-jess'

✗ import { JessOptions } from 'rollup-plugin-jess' (if used at runtime)

TypeScript declaration ships with the package; JessOptions is exported as a named type for plugin configuration. Only import as type to avoid runtime inclusion.

Rollup configuration importing the jess plugin, converting Jess files in the build pipeline.

// rollup.config.js import jess from 'rollup-plugin-jess'; import { defineConfig } from 'rollup'; export default defineConfig({ input: 'src/main.js', output: { file: 'dist/bundle.js', format: 'esm' }, plugins: [ jess({ // Jess configuration options (see jesscss.github.io) // e.g., compress: false }) ] });

Debug

Known issues

deprecatedPlugin is in alpha version (1.0.8-alpha). API may change without major version bump.

fix

Pin to exact version and monitor for breaking changes before production use.

affects: <1.0.0

gotchaPlugin expects Rollup ^2.0.0; incompatible with Rollup 3+.

fix

Do not use with Rollup 3+; consider using rollup-plugin-jess-ng fork or wait for update.

affects: >=1.0.0

gotchaRequires Node.js >=12; older versions may cause cryptic module resolution errors.

fix

Upgrade Node.js to >=12 or use a transpiler for the plugin.

affects: >=1.0.0

deprecatedJess framework itself (jesscss) may be deprecated; last release in 2019. Plugin depends on it.

fix

Evaluate alternative CSS preprocessors or ensure Jess is still maintained for your use case.

affects: >=1.0.0

Errors

Common errors & fixes

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

Plugin not installed or npm install incomplete.

fix

Run `npm install rollup-plugin-jess --save-dev` (or yarn equivalent) in project root.

TypeError: jess is not a function

Using CommonJS require in an ESM-only package; jess is the default export but not available via require as a function.

fix

Use dynamic import: const jess = (await import('rollup-plugin-jess')).default; in CommonJS context, or convert rollup.config.js to ES module.

Error: Peer dependency rollup@^2.0.0 not installed

Rollup is missing or version mismatch (e.g., Rollup 3.x installed).

fix

Install Rollup 2.x: `npm install rollup@^2.0.0 --save-dev`.

Upgrade

Version history

1.0.8-alpha.8latest on npm

Audit

Dependencies

rolluprequiredPeer dependency; plugin requires Rollup >=2.0.0 to hook into the build pipeline.

Agent activity

8 hits · last 30 days

node

Resources

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