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Use the ESM directory in the Nuxt config #2015

Job	Run time
build and typecheck (ubuntu-latest)	1m 32s
test (ubuntu-latest, 2/2)	1m 56s
test (windows-latest, 1/2)	7m 37s
build and typecheck (windows-latest)	8m 7s
test (ubuntu-latest, unit)	3m 9s
test (ubuntu-latest, 1/2)	2m 16s
live-e2e	1m 38s
test (windows-latest, unit)	8m 57s
test (windows-latest, 2/2)	6m 49s
done	3s
	42m 4s