Registry / devops / webpack-deep-scope-plugin

webpack-deep-scope-plugin

library1.6.2jsnpmunverified

A webpack plugin that improves tree-shaking by performing deep scope analysis to eliminate unused imports related to unused exports. Version 1.6.2 requires webpack ^4.14.0 and Node.js 8+. It solves webpack issue #6264 by analyzing variable scopes and removing dead code more aggressively than standard tree-shaking. Uses TypeScript and includes a custom version of escope. Alternative to webpack's built-in sideEffects flag but only works with ES module syntax (import/export).

devops

npm install webpack-deep-scope-plugin

github ↗package ↗

INSTALL

IMPORT

SIG · WEBPACK-DEEP-SCOPE

webpack-deep-scope-plugin

devopsjavascriptv1.6.2

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.

WebpackDeepScopeAnalysisPlugin

✓ import WebpackDeepScopeAnalysisPlugin from 'webpack-deep-scope-plugin'

✗ const WebpackDeepScopeAnalysisPlugin = require('webpack-deep-scope-plugin')

Default export; requires .default in CommonJS require.

default

✓ const WebpackDeepScopeAnalysisPlugin = require('webpack-deep-scope-plugin').default

✗ const WebpackDeepScopeAnalysisPlugin = require('webpack-deep-scope-plugin')

CommonJS require must access .default property.

WebpackDeepScopeAnalysisPlugin

✓ const { default: WebpackDeepScopeAnalysisPlugin } = require('webpack-deep-scope-plugin')

Destructured require also works.

Shows how to add the plugin to webpack config with CommonJS require and usedExports optimization.

// webpack.config.js const WebpackDeepScopeAnalysisPlugin = require('webpack-deep-scope-plugin').default; module.exports = { // ... other config optimization: { usedExports: true, // required for tree-shaking }, plugins: [ new WebpackDeepScopeAnalysisPlugin(), ], };

Debug

Known issues

gotchaPlugin only works with import/export syntax, not CommonJS requires or transpiled to module.exports.

fix

Ensure your code uses ES modules; avoid Babel transforming to CommonJS unless targeting Node.

affects: all

breakingVersion 1.6.0 renamed the core package to deep-scope-analyser; API unchanged.

fix

Update references if directly using deep-scope-analyser; plugin API remains same.

affects: >=1.6.0

gotchaRequires webpack ^4.14.0; not compatible with webpack 5.

fix

Use webpack 4.x or find alternative for webpack 5 (e.g., webpack's built-in sideEffects flag).

affects: >=1.0.0

deprecatedPlugin may not be actively maintained; last release 1.6.2 in 2019.

fix

Consider using webpack 5's built-in tree-shaking or sideEffects in package.json.

affects: >=1.6.2

Errors

Common errors & fixes

TypeError: WebpackDeepScopeAnalysisPlugin is not a constructor

Forgetting to use .default when requiring with CommonJS.

fix

Import via require('webpack-deep-scope-plugin').default

Error: Module not found: Error: Can't resolve 'deep-scope-analyser'

Missing dependency after npm install (peer dep not auto-installed).

fix

Run npm install deep-scope-analyser

WARNING in ./node_modules/webpack-deep-scope-plugin/dist/index.js Critical dependency: the request of a dependency is an expression

Plugin uses dynamic require patterns that webpack 4 warns about.

fix

Ignore the warning if tree-shaking works; or try using webpack 4.43+ which may reduce warnings.

Upgrade

Version history

1.6.2latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/vincentdchan/webpack-deep-scope-analysis-plugin ↗

packagehttps://www.npmjs.com/package/webpack-deep-scope-plugin ↗