A lazy lookup table: after the initial collection of type equations is done in Elm.TypeInference.inferModule, we compute the type on demand when the user calls TypeLookupTable.get.

Look up the inferred Type for a source Range.

Only exact ranges given by Node.range of AST nodes inside the input Elm.Syntax.Files are recorded. There is no overlap matching.

An empty lookup table. Not for direct use.

Useful for when a value of this type is needed to satisfy the compiler but will never be used.