Registry / devops / speed-measure-webpack-v5-plugin

speed-measure-webpack-v5-plugin

library1.5.2jsnpmunverified

A Webpack plugin that measures the execution time of loaders and plugins during builds, helping developers identify performance bottlenecks. Current stable version is 1.5.2, compatible with Webpack versions 1 through 5. This is a community fork of stephencookdev/speed-measure-webpack-plugin, specifically updated for Webpack v5. The primary differentiator is its ability to exclude certain plugins from measurement to avoid build failures (e.g., with ReactRefreshPlugin or MiniCssExtractPlugin). It supports multiple output formats (human, JSON, custom) and can write results to a file. Release cadence is low; last update was around 2021.

devops

npm install speed-measure-webpack-v5-plugin

github ↗package ↗

INSTALL

IMPORT

SIG · SPEED-MEASURE-WEBP

speed-measure-webpack-v5-plugin

devopsjavascriptv1.5.2

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.

SpeedMeasurePlugin

✓ const SpeedMeasurePlugin = require('speed-measure-webpack-v5-plugin');

✗ import SpeedMeasurePlugin from 'speed-measure-webpack-v5-plugin';

Package does not export ESM; use CommonJS require. There is no default export for ES modules.

SpeedMeasurePlugin

✓ import SpeedMeasurePlugin from 'speed-measure-webpack-v5-plugin';

✗ import { SpeedMeasurePlugin } from 'speed-measure-webpack-v5-plugin';

Named import does not exist; must import default even if using ESM syntax with bundler that handles CJS interop.

Demonstrates basic usage: wrap your webpack config with smp.wrap() to measure build times.

Debug

Known issues

gotchaWhen using certain plugins (e.g., ReactRefreshPlugin, MiniCssExtractPlugin), SMP may cause build failures or break HMR. Must exclude these plugins via the second argument to wrap().

fix

smp.wrap(config, ['ReactRefreshPlugin', 'MiniCssExtractPlugin'])

affects: >=1.0.0 <2.0.0

deprecatedThe original package 'speed-measure-webpack-plugin' is not maintained for webpack v5. Users should migrate to this fork.

fix

Replace require('speed-measure-webpack-plugin') with require('speed-measure-webpack-v5-plugin').

affects: >=0

gotchaSMP does not support webpack v5's persistent caching; measurements may be inaccurate if persistent caching is enabled.

fix

Disable persistent caching when measuring: set cache: false in webpack config.

affects: >=1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'speed-measure-webpack-v5-plugin'

Package not installed or incorrectly spelled.

fix

Run 'npm install --save-dev speed-measure-webpack-v5-plugin'

TypeError: smp.wrap is not a function

Importing incorrectly (e.g., named import instead of default).

fix

Use: const SpeedMeasurePlugin = require('speed-measure-webpack-v5-plugin');
const smp = new SpeedMeasurePlugin();

Module build failed: TypeError: The 'compilation' argument must be an instance of Compilation

SMP is incompatible with webpack v5's new Compilation instance. This may occur when using certain plugins.

fix

Exclude problematic plugins via smp.wrap(config, ['PluginName']). If issue persists, use older webpack version.

Upgrade

Version history

1.5.2latest on npm

Audit

Dependencies

webpackrequiredPeer dependency; works with webpack 1-5

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/rising-entropy/speed-measure-webpack-v5-plugin ↗

packagehttps://www.npmjs.com/package/speed-measure-webpack-v5-plugin ↗