Registry / devops / rollup-plugin-size

rollup-plugin-size

library0.3.1jsnpmunverified

Prints gzipped sizes of Rollup bundle assets and tracks changes since last build. Version 0.3.1 is the latest release, with low maintenance. It is a port of Google Chrome Labs' size-plugin for Webpack, providing per-file size comparison and historical tracking via a stored .size-snapshot.json file. Key differentiator: integrates directly into Rollup's output lifecycle.

devops observability

npm install rollup-plugin-size

github ↗package ↗

INSTALL

IMPORT

SIG · ROLLUP-PLUGIN-SIZE

rollup-plugin-size

devopsjavascriptv0.3.1

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 18–223 runs

build_error

glibc

node 18–223 runs

build_error

Code

Verified usage

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

size

✓ import size from 'rollup-plugin-size'

✗ const { size } = require('rollup-plugin-size')

Default export is a function. Named export does not exist.

Plugin (type)

✓ import type { Plugin } from 'rollup'; import size from 'rollup-plugin-size'

✗ import { Plugin } from 'rollup-plugin-size'

The package does not export TypeScript types. Use Rollup's Plugin type for annotation.

Basic Rollup configuration using rollup-plugin-size to print gzipped sizes of output files.

import size from 'rollup-plugin-size'; export default { input: 'src/main.js', output: { dir: 'dist', format: 'esm' }, plugins: [size()] };

Debug

Known issues

breakingThe plugin writes a .size-snapshot.json file in the current directory by default, which may conflict with version control or CI processes.

fix

Set the 'filename' option to a custom path or add .size-snapshot.json to .gitignore.

affects: >=0.1.0

deprecatedThe 'profile' option has been removed in recent versions.

fix

Remove the 'profile' option from plugin configuration.

affects: >=0.2.0

gotchaThe plugin requires the 'rollup' peer dependency to be installed. It will not work without Rollup being present in the project.

fix

Install Rollup via `npm install --save-dev rollup`.

affects: >=0.1.0

gotchaChanges tracking is based on a file system snapshot; if the snapshot is deleted or not committed across environments, comparisons will be incomplete.

fix

Commit the .size-snapshot.json file to version control if you want persistent change tracking across builds.

affects: >=0.1.0

Errors

Common errors & fixes

TypeError: size is not a function

Using a named import `{ size }` instead of default import.

fix

Use `import size from 'rollup-plugin-size'` (default import).

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

Package not installed or missing from node_modules.

fix

Run `npm install --save-dev rollup-plugin-size`.

Upgrade

Version history

0.3.1latest on npm

Audit

Dependencies

rolluprequiredpeer dependency (peerDep in package.json)

Agent activity

24 hits · last 30 days

node

OpenAI (training)

Amazon

Resources

githubhttps://github.com/luwes/rollup-plugin-size ↗

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