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nextjs_bundle_analysis.yml
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# Copyright (c) HashiCorp, Inc.
# SPDX-License-Identifier: MPL-2.0
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: ./
permissions:
contents: read # for checkout repository
actions: read # for fetching base branch bundle stats
pull-requests: write # for comments
jobs:
analyze:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- uses: pnpm/action-setup@v4
id: pnpm-install
with:
version: 9.5.0
run_install: false
- uses: actions/setup-node@v4
with:
node-version: 20
- run: pnpm install
# DO NOT CACHE DUE TO NEXTRA CACHING ISSUES
# - name: Restore next build
# uses: actions/cache@v3
# 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@v3
with:
name: bundle
path: .next/analyze/__bundle_analysis.json
- name: Download base branch bundle stats
uses: dawidd6/action-download-artifact@v6
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
# https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#multiline-strings
run: |
echo "body<<EOF" >> $GITHUB_OUTPUT
echo "$(cat .next/analyze/__bundle_analysis_comment.txt)" >> $GITHUB_OUTPUT
echo EOF >> $GITHUB_OUTPUT
- name: Find Comment
uses: peter-evans/find-comment@v2
if: success() && github.event.number
id: fc
with:
issue-number: ${{ github.event.number }}
body-includes: "<!-- __NEXTJS_BUNDLE"
- name: Create Comment
uses: peter-evans/create-or-update-comment@v2
if: success() && github.event.number && steps.get-comment-body.outputs.body != '' && 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/create-or-update-comment@v2
if: success() && github.event.number && steps.fc.outputs.comment-id != 0
with:
issue-number: ${{ github.event.number }}
body: ${{ steps.get-comment-body.outputs.body || 'Removed' }}
comment-id: ${{ steps.fc.outputs.comment-id }}
edit-mode: replace