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nextjs_bundle_analysis.yml
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name: 'Next.js Bundle Analysis'
on:
pull_request:
push:
branches:
- main # change this if your default branch is named differently
workflow_dispatch:
defaults:
run:
# change this if your nextjs app does not live at the root of the repo
working-directory: ./
jobs:
analyze:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- uses: pnpm/[email protected]
- uses: actions/setup-node@v3
with:
node-version-file: '.nvmrc'
cache: 'pnpm'
- name: Install dependencies
run: pnpm install
- name: Restore next build
uses: actions/cache@v2
id: restore-build-cache
env:
cache-name: cache-next-build
with:
# if you use a custom build directory, replace all instances of `.next` in this file with your build directory
# ex: if your app builds to `dist`, replace `.next` with `dist`
path: .next/cache
# change this if you prefer a more strict cache
key: ${{ runner.os }}-build-${{ env.cache-name }}
- name: Build next.js app
# change this if your site requires a custom build command
run: ./node_modules/.bin/next build
# Here's the first place where next-bundle-analysis' own script is used
# This step pulls the raw bundle stats for the current bundle
- name: Analyze bundle
run: npx -p nextjs-bundle-analysis report
- name: Upload bundle
uses: actions/upload-artifact@v2
with:
name: bundle
path: .next/analyze/__bundle_analysis.json
- name: Download base branch bundle stats
uses: dawidd6/action-download-artifact@v2
if: success() && github.event.number
with:
workflow: nextjs_bundle_analysis.yml
branch: ${{ github.event.pull_request.base.ref }}
path: .next/analyze/base
# And here's the second place - this runs after we have both the current and
# base branch bundle stats, and will compare them to determine what changed.
# There are two configurable arguments that come from package.json:
#
# - budget: optional, set a budget (bytes) against which size changes are measured
# it's set to 350kb here by default, as informed by the following piece:
# https://infrequently.org/2021/03/the-performance-inequality-gap/
#
# - red-status-percentage: sets the percent size increase where you get a red
# status indicator, defaults to 20%
#
# Either of these arguments can be changed or removed by editing the `nextBundleAnalysis`
# entry in your package.json file.
- name: Compare with base branch bundle
if: success() && github.event.number
run: ls -laR .next/analyze/base && npx -p nextjs-bundle-analysis compare
- name: Get comment body
id: get-comment-body
if: success() && github.event.number
run: |
body=$(cat .next/analyze/__bundle_analysis_comment.txt)
body="${body//'%'/'%25'}"
body="${body//$'\n'/'%0A'}"
body="${body//$'\r'/'%0D'}"
echo ::set-output name=body::$body
- name: Find Comment
uses: peter-evans/find-comment@v1
if: success() && github.event.number
id: fc
with:
issue-number: ${{ github.event.number }}
body-includes: '<!-- __NEXTJS_BUNDLE -->'
- name: Create Comment
uses: peter-evans/[email protected]
if: success() && github.event.number && steps.fc.outputs.comment-id == 0
with:
issue-number: ${{ github.event.number }}
body: ${{ steps.get-comment-body.outputs.body }}
- name: Update Comment
uses: peter-evans/[email protected]
if: success() && github.event.number && steps.fc.outputs.comment-id != 0
with:
issue-number: ${{ github.event.number }}
body: ${{ steps.get-comment-body.outputs.body }}
comment-id: ${{ steps.fc.outputs.comment-id }}
edit-mode: replace