rebuild JS from ground up, prep major version #346

Job	Run time
test (bl ~> 8.0 / rails 7.2.1 / rb 3.3 / importmaps-rails, sprockets)	3m 21s
test (bl ~> 8.0 / rails 7.2.1 / rb 3.3 / importmaps-rails, sprockets)	3m 21s
test (bl ~> 8.0 / rails 7.2.1 / rb 3.3 / importmaps-rails, propshaft)	3m 9s
test (bl ~> 8.0 / rails 7.2.1 / rb 3.3 / importmaps-rails, propshaft)	2m 48s
test (bl ~> 7.0 / rails 7.2.1 / rb 3.3 / esbuild, sprockets)	3m 41s
test (bl ~> 7.0 / rails 7.2.1 / rb 3.3 / esbuild, sprockets)	3m 26s
test (bl ~> 7.0 / rails 7.2.1 / rb 3.3 / esbuild, propshaft)	3m 20s
test (bl ~> 7.0 / rails 7.2.1 / rb 3.3 / esbuild, propshaft)	3m 6s
test (bl ~> 7.0 / rails 7.1.4 / rb 3.2 / esbuild, sprockets)	3m 18s
test (bl ~> 7.0 / rails 7.1.4 / rb 3.2 / esbuild, sprockets)	3m 18s
test (bl ~> 7.0 / rails 7.0.8.4 / rb 3.1 / esbuild, sprockets)	3m 41s
test (bl ~> 7.0 / rails 7.0.8.4 / rb 3.1 / esbuild, sprockets)	3m 41s
	40m 10s

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