stop using node 16 in pipelines / clear other pipeline warnings #734

	name: CI

	env:
	PNPM_STORE_PATH: ''

	# Runs build and test on:
	# every push that has a change in a file not in the docs folder
	# every pull request with main branch as the base that has a change
	# in a file not in the docs folder
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	build:
	name: Check and build codebase
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-node@v4
	with:
	node-version: 18.x

	# Wireit cache
	- uses: google/wireit@setup-github-actions-caching/v1

	- uses: pnpm/action-setup@v3
	name: Install pnpm
	with:
	run_install: false
	version: 7

	- name: Get pnpm store directory
	shell: bash
	id: pnpm-cache
	run: \|
	echo "PNPM_STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV

	- name: Setup pnpm cache
	uses: actions/cache@v4
	with:
	path: ${{ env.PNPM_STORE_PATH }}
	key: ${{ runner.os }}-pnpm-store-${{ hashFiles('./pnpm-lock.yaml') }}
	restore-keys: \|
	${{ runner.os }}-pnpm-store-

	- name: Install dependencies
	run: pnpm install

	# If you hare having issues post-merge with wireit improperly caching,
	# comment this out, push a commit, then re-comment.
	# - name: Clear all caches
	# run: pnpm clean:cache

	- name: Build Code and Examples
	run: pnpm run build

	# We build in-source files like `examples/one-page/index.html`.
	# This check ensures we don't build changes that need committing.
	- name: Check generated in-source files
	run: git diff --no-ext-diff --quiet --exit-code

	- name: Check Code
	run: pnpm run check:ci

Provide feedback