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name: update-from-starter-template description: Update Mattermost plugin repositories with common files from mattermost-plugin-starter-template and fix all linter issues. Use when syncing build tooling, updating golangci-lint config, or fixing linter errors in a Mattermost plugin. user-invocable: true allowed-tools: Read, Write, Edit, Bash, Glob, Grep, WebFetch, mcp__github-server__get_file_contents

Update from Starter Template

Update this Mattermost plugin repository with common build/config files from the mattermost-plugin-starter-template and fix all linter issues.

Instructions

Phase 0: Prepare the repository

1. Switch to the main branch: git checkout master (or main)
2. Pull latest changes: git pull
3. Create a new branch for the updates: git switch -c update-from-starter-template

Phase 1: Update common files from starter template

Fetch and compare these files from mattermost/mattermost-plugin-starter-template (master branch):

Build files:

• build/manifest/*.go
• build/pluginctl/*.go
• build/setup.mk
• Makefile

Config files:

• .editorconfig
• .gitattributes
• .github/workflows/ci.yml
• .gitignore
• .golangci.yml
• .nvmrc
• go.mod (for Go version only)
• server/.gitignore

When updating:

• Preserve plugin-specific customizations (plugin ID, custom targets)
• Update tool versions (golangci-lint, gotestsum, Node.js)
• Adopt new linter configurations
• Update Go version in go.mod if the starter template uses a newer version (compare the go directive). Also update the Go version in .github/workflows/ci.yml to match. After updating, run go mod tidy to update go.sum
• Preserve license headers

Phase 2: Fix linter issues

1. Run make check-style to identify issues
2. Install gofumpt if needed: go install mvdan.cc/gofumpt@latest
3. Run gofumpt -w server/ to auto-fix formatting
4. Fix remaining issues manually

Phase 3: Verify and commit

1. Run make test to verify all tests pass
2. Run make check-style to confirm 0 issues
3. Create a descriptive commit and PR. Use the pull request template from https://github.com/mattermost/.github/blob/master/PULL_REQUEST_TEMPLATE.md.

Example commit message

CopyUpdate common files from starter template and fix linter issues

Troubleshooting

Mock files have linter errors:

• Generated mocks may need regeneration: go generate ./...
• Or exclude from linting if they're third-party generated