MINOR: [JS] Bump @swc/helpers from 0.5.12 to 0.5.15 in /js (#44836) · apache/arrow@8d85d38

Test: build/js/src/util/buffer.ts#L134

Move generator function 'wrap' to the outer scope

Test: build/js/src/util/buffer.ts#L172

Move async generator function 'wrap' to the outer scope

Test: build/js/test/generate-test-data.ts#L325

Unnecessarily cloning an array

Test: build/js/test/generate-test-data.ts#L347

Unnecessarily cloning an array

Test: build/js/test/generate-test-data.ts#L368

Unnecessarily cloning an array

Test: build/js/test/generate-test-data.ts#L378

Unnecessarily cloning an array

Test: build/js/test/generate-test-data.ts#L486

Unnecessarily cloning an array

Test: build/js/test/generate-test-data.ts#L624

Unnecessarily cloning an array

Build: build/js/src/util/buffer.ts#L134

Move generator function 'wrap' to the outer scope

Build: build/js/src/util/buffer.ts#L172

Move async generator function 'wrap' to the outer scope

Build: build/js/test/generate-test-data.ts#L325

Unnecessarily cloning an array

Build: build/js/test/generate-test-data.ts#L347

Unnecessarily cloning an array

Build: build/js/test/generate-test-data.ts#L368

Unnecessarily cloning an array

Build: build/js/test/generate-test-data.ts#L378

Unnecessarily cloning an array

Build: build/js/test/generate-test-data.ts#L486

Unnecessarily cloning an array

Build: build/js/test/generate-test-data.ts#L624

Unnecessarily cloning an array

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