Registry / devops / webpack-assets-manifest

webpack-assets-manifest

library6.5.1jsnpmunverified

Webpack plugin that generates a JSON manifest mapping original filenames to their hashed output (e.g., main.js → main-9c68d5e8.js). v6.5.1 is the latest stable release, with frequent updates (~monthly). Written in TypeScript, ships its own types. Supports Subresource Integrity (SRI), entrypoint assets, custom sorting, merging, and hooks. A key differentiator is its built-in SRI and entrypoint handling, plus full webpack 5 compatibility. Requires Node >=20.10 and webpack ^5.61. No default export in v6 — use named import.

devops http-networking serialization

npm install webpack-assets-manifest

github ↗package ↗

INSTALL

IMPORT

SIG · WEBPACK-ASSETS-MAN

webpack-assets-manifest

devopsjavascriptv6.5.1

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 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

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

WebpackAssetsManifest

✓ import { WebpackAssetsManifest } from 'webpack-assets-manifest'

✗ const WebpackAssetsManifest = require('webpack-assets-manifest'); // or: import WebpackAssetsManifest from 'webpack-assets-manifest'

Since v6, the plugin is a named export, not default. CommonJS users must destructure from module.exports.

WebpackAssetsManifest (CommonJS)

✓ const { WebpackAssetsManifest } = require('webpack-assets-manifest')

✗ const WebpackAssetsManifest = require('webpack-assets-manifest').default

The default export is removed in v6. Do NOT use .default.

Options type

✓ import type { Options } from 'webpack-assets-manifest'

✗ import { Options } from 'webpack-assets-manifest' (if not using type-only)

Options is a TypeScript type, not a runtime value. Use type-only import to avoid bundling.

Creates a manifest with integrity and entrypoints, filters out .map files, then accesses entries and SRI hashes after build.

import { WebpackAssetsManifest } from 'webpack-assets-manifest'; const manifestPlugin = new WebpackAssetsManifest({ output: 'my-assets.json', entrypoints: true, integrity: true, customize(entry, original, utils) { if (entry.value && entry.value.match(/\.map$/)) return false; // exclude sourcemaps return entry; } }); // In webpack config: export default { plugins: [manifestPlugin] }; // Access manifest after build: console.log(manifestPlugin.get('main.js')); console.log(manifestPlugin.getIntegrity('main.js'));

Debug

Known issues

breakingv6 removed default export; import must use named export `WebpackAssetsManifest`

fix

Change `import WebpackAssetsManifest from 'webpack-assets-manifest'` to `import { WebpackAssetsManifest } from 'webpack-assets-manifest'`

affects: >=6.0.0

breakingv5 changed default output filename to 'assets-manifest.json' (was 'manifest.json')

fix

Set `output: 'manifest.json'` explicitly to retain old behavior or update downstream consumers.

affects: >=5.0.0 <6.0.0

deprecatedv4 entrypoints structure changed: assets now nested under `assets` property (e.g., `entrypoints.main.assets.js` instead of `entrypoints.main.js`)

fix

Update code that reads entrypoints to use the new nested structure.

affects: >=4.0.0 <5.0.0

gotchaOptions schema in v5+ does not allow extra properties; typos in option names will throw validation errors

fix

Ensure all option names match the documented schema exactly.

affects: >=5.0.0

gotchaSRI hash generation may produce different hashes than Webpack's built-in SRI plugin due to different hash splitting logic (v6.0.2+)

fix

Use consistent hashing algorithm; if exact match needed, consider using webpack's Subresource Integrity plugin directly.

affects: >=6.0.2

Errors

Common errors & fixes

TypeError: WebpackAssetsManifest is not a constructor

Using default import in v6 when only named export exists

fix

import { WebpackAssetsManifest } from 'webpack-assets-manifest'

Cannot find module 'webpack-assets-manifest'

Package not installed or Node.js version below 20.10 (v6 requires >=20.10)

fix

Install with `npm install -D webpack-assets-manifest` and ensure Node >=20.10

ValidationError: Invalid options object. 'WebpackAssetsManifest' has an unknown property 'entrypointsUseAssets'

Option name typo or used in v5+ (property renamed or removed)

fix

Check valid option names in the schema; use 'entrypointsUseAssets' only for v4, for v5+ use 'entrypoints: true'

Upgrade

Version history

6.5.1latest on npm

Audit

Dependencies

webpackrequiredPeer dependency; plugin hooks into webpack compilation lifecycle

Agent activity

19 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/webdeveric/webpack-assets-manifest ↗

packagehttps://www.npmjs.com/package/webpack-assets-manifest ↗