Registry / devops / rollup-plugin-filesize

rollup-plugin-filesize

library10.0.0jsnpmunverified

A Rollup plugin that displays the size of output files in the CLI, including minified, gzipped, and Brotli sizes. Version 10.0.0 is the latest stable, requiring Node >=16 and Rollup >=4 (ESM-only). It offers customizable output formatting, a reporter API for custom handlers (e.g., badge generation), and experimental size comparisons against previous releases or builds. Differentiates from alternative size plugins with built-in Brotli support and theme-aware display.

devops

npm install rollup-plugin-filesize

github ↗package ↗

INSTALL

IMPORT

SIG · ROLLUP-PLUGIN-FILE

rollup-plugin-filesize

devopsjavascriptv10.0.0

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.

filesize

✓ import filesize from 'rollup-plugin-filesize';

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

Package is ESM-only since v10; CommonJS require will fail.

filesize

✓ import { filesize } from 'rollup-plugin-filesize';

✗ import filesize from 'rollup-plugin-filesize';

Named export available for tree-shaking; both work but named is preferred.

Plugin

✓ import type { Plugin } from 'rollup';

✗ import { Plugin } from 'rollup-plugin-filesize';

Plugin type is from Rollup, not from this package.

Shows how to integrate the plugin into a Rollup build, displaying minified and gzipped sizes.

import { rollup } from 'rollup'; import filesize from 'rollup-plugin-filesize'; async function build() { const bundle = await rollup({ input: 'src/index.js', plugins: [ filesize({ showMinifiedSize: true, showGzippedSize: true, showBrotliSize: false, theme: 'dark' }) ] }); await bundle.write({ file: 'dist/bundle.js', format: 'es' }); } build().catch(err => console.error(err));

Debug

Known issues

breakingVersion 10 drops CommonJS support; package is ESM-only.

fix

Use import syntax and ensure Node >=16.

affects: >=10.0.0

breakingVersion 6 drops terser for minification; minification is optional.

fix

If minification is needed, use a separate plugin like @rollup/plugin-terser.

affects: >=6.0.0

deprecatedThe 'render' function option is deprecated; use 'reporter' instead.

fix

Replace 'render' with 'reporter' option.

affects: >=5.0.0

gotchaFor code-splitting builds, the plugin reports each file individually.

fix

Check console output for per-file sizes; aggregate manually if needed.

affects: >=6.1.0

gotchaWindows compatibility fixed in v8.0.1 for import paths.

fix

Use v8.0.1 or later on Windows.

affects: >=8.0.1

deprecatedshowBeforeSizes is experimental and may change.

fix

Do not rely on it for production use.

affects: *

Errors

Common errors & fixes

Error [ERR_REQUIRE_ESM]: require() of ES Module not supported

Package is ESM-only; CommonJS require fails.

fix

Use import syntax instead of require().

TypeError: filesize is not a function

Default import used but named import does not match.

fix

Use import filesize from 'rollup-plugin-filesize'.

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

Package not installed or incorrect path.

fix

Run npm install rollup-plugin-filesize --save-dev.

Upgrade

Version history

10.0.0latest on npm

Audit

Dependencies

rolluprequiredpeer dependency; plugin is designed for Rollup

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/ritz078/rollup-plugin-filesize ↗

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