Cast from union for faster type checking #830
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Generating a shape for
class_var.locationtakes seconds because it is a union type more than 10 constructs.nil | RBS::Location[...] | RBS::Location[...] | RBS::Location[...] | .... Giving a typeRBS::Location[untyped, untyped]?beforehand makes the shape generation much faster.This change makes type checking the
validator.rbusing released (and the HEAD) version of Steep faster. Not an improvement of the type checking algorithm itself.