MAINT: add input validation to `scales` argument to `cwt` #9

	name: Test Pyodide build for PyWavelets

	on:
	push:
	branches:
	- master
	- v1.**
	pull_request:
	branches:
	- master
	- v1.**

	env:
	FORCE_COLOR: 3

	jobs:
	build_wasm_emscripten:
	name: Build PyWavelets for Pyodide
	runs-on: ubuntu-latest
	# Uncomment the following line to test changes on a fork
	# if: github.repository == 'PyWavelets/pywt'
	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Set up Python 3.11
	id: setup-python
	uses: actions/setup-python@v2
	with:
	python-version: '3.11.2'

	- name: Install prerequisites
	run: \|
	python -m pip install pyodide-build "pydantic<2"
	echo EMSCRIPTEN_VERSION=$(pyodide config get emscripten_version) >> $GITHUB_ENV

	- name: Set up Emscripten toolchain
	uses: mymindstorm/setup-emscripten@v14
	with:
	version: ${{ env.EMSCRIPTEN_VERSION }}
	actions-cache-folder: emsdk-cache

	- name: Set up Node.js
	uses: actions/setup-node@v4.0.2
	with:
	node-version: '18'

	- name: Build PyWavelets
	run: \|
	pyodide build

	- name: Install and test wheel
	run: \|
	pyodide venv .venv-pyodide
	source .venv-pyodide/bin/activate
	pip install dist/*.whl
	pushd demo
	pip install matplotlib pytest
	python -c "import pywt; print(pywt.__version__)"
	pytest --pyargs pywt

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