Bump serialize-javascript and mocha #30

# to view logs

	# This is a basic workflow to help you get started with Actions

	name: Test coverage

	on:
	push:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	# The type of runner that the job will run on
	runs-on: ubuntu-20.04
	strategy:
	fail-fast: true
	matrix:
	node: ['12', '14', '16']
	name: Node ${{ matrix.node }} test

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2

	- name: Set up Node.js
	uses: actions/setup-node@v2
	with:
	node-version: ${{ matrix.node }}

	- run: npm i -g mocha nyc typescript && npm i
	name: Install packages

	- run: npm run build:clean
	name: Build project

	- name: Test and coverage
	run: npm run coverage

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