TypeScript general type error won't work ? Generic type 'propsType' requires 1 type argument (s).

CodePudding user response：

You are not initializing expenses properly (1 type argument is missing apparently). Therefore expenses is not of type propsType, so Typescript falls back to any type. When you do .map() on a variable that is of type any, then the values inside that map will also be of type any.

CodePudding user response：

You must pass a type as T on definition of "expenses" for example:

export const expenses: propsType<number>....