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/** Merge types of two objects. */export type Spread<TTarget, TSource> = TTarget extends void ? TSource  : TSource extends void ? TTarget  // Properties in L that don't exist in R.  :    & Omit<TTarget, keyof TSource>    // Properties in R that don't exist in L.    & Omit<TSource, keyof TTarget>    // Required properties in R that exist in L.    & SpreadRequiredProperties<      TTarget,      TSource,      RequiredKeys<TSource> & keyof TTarget    >    // Required properties in L that exist in R.    & SpreadRequiredProperties<      TTarget,      TSource,      RequiredKeys<TTarget> & keyof TSource    >    // Optional properties in L and R.    & SpreadOptionalProperties<      TTarget,      TSource,      OptionalKeys<TTarget> & OptionalKeys<TSource>    >;
type RequiredKeys<TRecord> = {  // deno-lint-ignore ban-types  [Key in keyof TRecord]-?: {} extends Pick<TRecord, Key> ? never : Key;}[keyof TRecord];
type OptionalKeys<TRecord> = {  // deno-lint-ignore ban-types  [Key in keyof TRecord]-?: {} extends Pick<TRecord, Key> ? Key : never;}[keyof TRecord];
type SpreadRequiredProperties<  TTarget,  TSource,  TKeys extends keyof TTarget & keyof TSource,> = {  [Key in TKeys]:    | Exclude<TTarget[Key], undefined>    | Exclude<TSource[Key], undefined>;};
type SpreadOptionalProperties<  TTarget,  TSource,  TKeys extends keyof TTarget & keyof TSource,> = {  [Key in TKeys]?: TTarget[Key] | TSource[Key];};