NodeJS : Is ".then(function(a){ return a; })" a no-op for promises?

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NodeJS : Is ".then(function(a){ return a; })" a no-op for promises?
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NodeJS : Is ".then(function(a){ return a; })" a no-op for promises?
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".then(function(a){ : a return Is promises? for no-op NodeJS a; })"



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