add tests for default import export and variable default export #695

	on:
	push:
	pull_request:
	schedule:
	- cron: '0 4 * * *'

	jobs:
	build:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	node-version:
	- 12.x
	- 14.x
	- 16.10.0
	- 16.16.0
	- 16.17.0
	- 16.x
	- 17.x
	- 18.5.0
	- 18.18.0
	- 18.19.0
	- 18.x
	- 20.9.0
	- 20.x
	- 21.x
	os:
	- ubuntu-latest
	- macos-latest
	- windows-latest

	steps:
	- uses: actions/checkout@v2
	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v2
	with:
	node-version: ${{ matrix.node-version }}
	- run: npm install
	- run: npm test
	- run: npm run test:ts
	if: (matrix.node-version != '12.x' && matrix.node-version != '14.x' && matrix.node-version != '16.10.0')
	- name: Archive code coverage results
	if: success()
	uses: actions/upload-artifact@v3
	with:
	name: coverage_${{ matrix.os }}_${{ matrix.node-version}}
	if-no-files-found: ignore
	path: coverage/lcov.info

	coverage:
	runs-on: ubuntu-latest
	needs: build
	steps:
	- name: Download reports' artifacts
	uses: actions/download-artifact@v3
	with:
	path: downloaded_artifacts
	- name: Install lcov
	run: \|
	sudo apt update
	sudo apt install -y lcov
	- name: Combine all coverage data
	run: \|
	find . -type f -name '*.info' -exec echo -a {} \; \| xargs --verbose lcov -o all_lcov.info
	- name: Report
	run: >
	lcov --summary all_lcov.info
	lcov --summary all_lcov.info \| grep lines \| cut -d' ' -f 4 \| cut -d% -f 1 \| xargs node -e "x=process.argv[1];console.log(x);assert(+x >= 90)"

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