Preflight

SkillDev tools

Runs every check your Webiny project needs before publishing packages: installs deps, builds, lints, formats, and runs tests.

Available today. Use it from your connected AI after setup.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the Preflight skill

About this skill

Webiny-only. Run all checks required before packages are ready for publish: deps, build, lint, format, tests.

What this skill tells your AI

The instructions your AI receives, as published by webiny/webiny-js in .claude/skills/preflight/SKILL.md and read by ahel’s review.

Webiny-only skill. Run all checks required before packages are ready for publish.

Important

  • Run steps in order.
  • If any step fails, diagnose and fix the issue, then restart from step 1.
  • Never run tests in parallel. Run each package sequentially.
  • Before running tests for each package, count active test cases and shard at 32 tests per shard.
  • To count active tests: rg "^\s*(it|test|it\.each|test\.each)\s*\(" packages/<name>/__tests__ -t ts --count-matches | awk -F: '{s+=$2} END {print s}'
  • Calculate shards: shards = ceil(count / 32). If shards is 1, no --shard flag needed.
  • Suppress noisy output: redirect stdout to /dev/null or pipe through tail as needed.

Steps

1. Install dependencies

yarn > /dev/null 2>&1

2. Generate webiny package

yarn webiny-scripts generate-webiny-package

3. Sync dependency versions

yarn webiny sync-dependencies

Verify packages/cli/files/duplicates.json is an empty array ([]). If it contains entries, there are duplicate dependency versions that must be resolved before continuing.

4. Generate tsconfig files

node scripts/generateTsConfigsInPackages.js

5. Check package node_modules

node scripts/checkPackageNodeModules.js

6. Verify package.json dependencies match source imports

yarn adio

Must output "All dependencies in order!" to pass.

7. Format code

yarn format:fix > /dev/null 2>&1

This auto-fixes formatting issues. No manual intervention needed.

8. Lint

yarn eslint

This only checks — it does not auto-fix. If eslint reports errors, fix them manually, then restart from step 1.

9. Full clean build

yarn build --no-cache 2>&1 | tail -10

10. Check dist paths

node scripts/checkDistPaths.js

Verifies no src/ paths remain in built output.

11. Run DDB tests

Run yarn test for each package below, sequentially. Count active tests first and shard at 32.

Packages that need yarn test:

  • api
  • api-aco
  • api-audit-logs
  • api-core
  • api-file-manager
  • api-file-manager-aco
  • api-headless-cms
  • api-headless-cms-aco
  • api-headless-cms-bulk-actions
  • api-headless-cms-ddb
  • api-headless-cms-import-export
  • api-headless-cms-scheduler
  • api-headless-cms-tasks
  • api-headless-cms-workflows
  • api-mailer
  • api-record-locking
  • api-scheduler
  • api-sync-system
  • api-website-builder
  • api-website-builder-scheduler
  • api-websockets
  • api-workflows
  • app-admin
  • cognito
  • db-dynamodb
  • form
  • handler
  • handler-aws
  • api-graphql
  • lexical-converter
  • plugins
  • react-composition
  • react-properties
  • react-rich-text-lexical-renderer
  • tasks
  • utils
# 1. Count active tests
count=$(rg "^\s*(it|test|it\.each|test\.each)\s*\(" packages/<name>/__tests__ -t ts --count-matches | awk -F: '{s+=$2} END {print s}')
shards=$(( (count + 31) / 32 ))

# 2a. If shards <= 1, run without sharding
yarn test packages/<name> 2>&1 | grep "Test Files"

# 2b. If shards > 1, run each shard sequentially
yarn test packages/<name> --shard=1/$shards 2>&1 | grep "Test Files"
yarn test packages/<name> --shard=2/$shards 2>&1 | grep "Test Files"
# ... etc

12. Run OpenSearch tests

Run yarn test:os for each package below, sequentially. Count active tests first and shard at 32.

Packages that need BOTH yarn test (step 11) AND yarn test:os:

  • api-aco
  • api-audit-logs
  • api-file-manager
  • api-file-manager-aco
  • api-headless-cms
  • api-headless-cms-aco
  • api-headless-cms-bulk-actions
  • api-headless-cms-import-export
  • api-mailer
  • api-scheduler
  • api-workflows
  • tasks

Packages that need ONLY yarn test:os (not in step 11):

  • api-dynamodb-to-elasticsearch
  • api-elasticsearch-tasks
  • api-headless-cms-ddb-es
  • api-headless-cms-es-tasks
  • api-opensearch
yarn test:os packages/<name> 2>&1 | grep "Test Files"

13. Check for uncommitted changes

git status

Report any unexpected uncommitted changes from the steps above.

Keeping the package lists up to date

If the lists seem stale, re-derive them:

# All testable packages (have vitest.config.ts)
find packages -maxdepth 2 -name "vitest.config.ts" | sed 's|packages/||;s|/vitest.config.ts||' | sort

# Packages with ddb-os support
grep -rl "ddb-os" --include="ci.config.json" packages/ | sed 's|packages/||;s|/ci.config.json||' | sort

# Check if a package has standalone ddb tests too
grep -o '"ddb"' packages/<name>/ci.config.json

Signals

GitHub stars
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Forks
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Last commit
Sep 2026
Advanced
Item type
skill
Key
preflight-webiny
Source
github.com/webiny/webiny-js