fix: export basic file from dir or shard (#440) #400

Job	Run time
js-test-and-release / build	1m 8s
js-test-and-release / check	1m 1s
js-test-and-release / test-chrome-webworker	19s
js-test-and-release / test-chrome	1m 5s
js-test-and-release / test-node (windows-latest, lts/*)	3m 30s
js-test-and-release / test-node (macos-latest, lts/*)	1m 45s
js-test-and-release / test-node (ubuntu-latest, lts/*)	57s
js-test-and-release / test-firefox-webworker	18s
js-test-and-release / test-electron-main	27s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	1m 26s
js-test-and-release / test-electron-renderer	23s
js-test-and-release / test-firefox	1m 26s
js-test-and-release / test-webkit (macos-latest, lts/*)	1m 28s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	2m 8s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	1m 3s
js-test-and-release / release-check	2s
js-test-and-release / release	1m 7s
	19m 33s

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