Bump the development-dependencies group across 1 directory with 12 up… #210

	name: Continuous Integration
	on:
	push:
	pull_request:
	branches:
	- main

	jobs:
	run-tests:
	runs-on: ubuntu-latest
	strategy:
	# two-dimensional matrix. first for "frontend"/"backend" and second for "lint"/"typecheck"
	matrix:
	subfolder: ["frontend", "backend"]
	command: ["lint", "typecheck"]
	fail-fast: false

	name: Run yarn ${{ matrix.command }} in ${{ matrix.subfolder }}/
	defaults:
	run:
	working-directory: ${{ matrix.subfolder }}
	steps:
	- uses: actions/checkout@v4

	- name: Use Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '22'

	- name: Cache dependencies
	uses: actions/cache@v4
	with:
	path: ${{ matrix.subfolder }}/node_modules
	key: ${{ runner.os }}-${{ matrix.subfolder }}-yarn-${{ hashFiles('**/yarn.lock') }}
	restore-keys: \|
	${{ runner.os }}-${{ matrix.subfolder }}-yarn-
	save-always: true

	- name: Install dependencies
	run: yarn install --frozen-lockfile

	- name: Run ${{ matrix.command }}
	run: yarn ${{ matrix.command }}

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