74 lines
1.7 KiB
Markdown
74 lines
1.7 KiB
Markdown
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# Next.js + Webpack Bundle Analyzer
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Use `webpack-bundle-analyzer` in your Next.js project
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## Installation
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```
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npm install @next/bundle-analyzer
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```
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or
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```
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yarn add @next/bundle-analyzer
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```
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Note: if installing as a `devDependency` make sure to wrap the require in a `process.env` check as `next.config.js` is loaded during `next start` as well.
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### Usage with environment variables
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Create a next.config.js (and make sure you have next-bundle-analyzer set up)
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```js
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const withBundleAnalyzer = require('@next/bundle-analyzer')({
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enabled: process.env.ANALYZE === 'true',
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})
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module.exports = withBundleAnalyzer({})
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```
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Or configuration as a function:
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```js
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module.exports = (phase, defaultConfig) => {
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return withBundleAnalyzer(defaultConfig)
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}
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```
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Then you can run the command below:
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```bash
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# Analyze is done on build when env var is set
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ANALYZE=true yarn build
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```
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When enabled two HTML files (client.html and server.html) will be outputted to `<distDir>/analyze/`. One will be for the server bundle, one for the browser bundle.
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#### Options
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To disable automatically opening the report in your default browser, set `openAnalyzer` to false:
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```js
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const withBundleAnalyzer = require('@next/bundle-analyzer')({
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enabled: process.env.ANALYZE === 'true',
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openAnalyzer: false,
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})
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module.exports = withBundleAnalyzer({})
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```
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### Usage with next-compose-plugins
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From version 2.0.0 of next-compose-plugins you need to call bundle-analyzer in this way to work
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```js
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const withPlugins = require('next-compose-plugins')
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const withBundleAnalyzer = require('@next/bundle-analyzer')({
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enabled: process.env.ANALYZE === 'true',
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})
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module.exports = withPlugins([
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[withBundleAnalyzer],
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// your other plugins here
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])
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```
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