69 lines
2.4 KiB
Text
69 lines
2.4 KiB
Text
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#!/usr/bin/env bash
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set -euo pipefail
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IFS=$'\n\t'
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#
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# # How does this work in general?
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#
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# 1. We run webpack in a production like mode and enable the BundleAnalyzerPlugin
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# 2. The Plugin builds a index.html for human consumption _and_ a stats.json
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# 3. This script creates a smaller analysis.json from the gargantuan stats.json
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# 4. In Merge Requests:
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# - compare that smaller to analysis.json to the one from the base commit on master
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# - report the comparison results via danger
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source scripts/utils.sh
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# For now we only want bundle-size-review to run in CI
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# Maybe we could create a "local mode"
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if [[ -z "${CI:-}" ]]; then
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echo 'Not running in a CI context, skipping bundle analysis'
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exit "0"
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fi
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# Get the _current_ commit sha
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if [[ -z "${CI_MERGE_REQUEST_IID:-}" ]]; then
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echo 'Not in a merge request, setting COMMIT_SHA to $CI_COMMIT_SHA'
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COMMIT_SHA="${CI_COMMIT_SHA}"
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else
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echo 'In a merge request, setting COMMIT_SHA to $CI_MERGE_REQUEST_SOURCE_BRANCH_SHA'
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COMMIT_SHA="${CI_MERGE_REQUEST_SOURCE_BRANCH_SHA}"
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fi
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# Create output directory
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mkdir -p bundle-size-review
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# Running webpack
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export WEBPACK_REPORT="true"
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run_timed_command "yarn run webpack-prod > bundle-size-review/webpack-output.log"
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# Copy results from stats plugin
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cp webpack-report/index.html bundle-size-review/bundle-report.html
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# Run comparison in danger
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if [[ -z "${DANGER_GITLAB_API_TOKEN:-}" ]]; then
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echo 'No Danger token available, skipping bundle analysis'
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exit "0"
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fi
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# TODO: Make this a dependency of GitLab itself after a proper release
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yarn global add https://gitlab.com/gitlab-org/frontend/playground/webpack-memory-metrics.git
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# Create smaller analysis.json
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run_timed_command "webpack-entry-point-analyser --from-file ./webpack-report/stats.json --json ./bundle-size-review/analysis.json --sha ${COMMIT_SHA}"
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rm -rf webpack-report
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if [[ -z "${CI_MERGE_REQUEST_IID:-}" ]]; then
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echo 'Not in a merge request, skipping comparison'
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exit "0"
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fi
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# Run comparison
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run_timed_command "webpack-compare-reports --job ${CI_JOB_ID} --to-file ./bundle-size-review/analysis.json --html ./bundle-size-review/comparison.html --markdown ./bundle-size-review/comparison.md"
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# Execute danger
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danger_id=$(echo -n "${DANGER_GITLAB_API_TOKEN}" | md5sum | awk '{print $1}' | cut -c5-10)
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run_timed_command "danger --dangerfile=danger/Dangerfile-bundle_size --fail-on-errors=true --verbose --danger_id=bundle-size-review-${danger_id}"
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exit "0"
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