interface variables {
    /// Get an application variable value for the current component.
    ///
    /// The name must match one defined in in the component manifest.
    get: func(name: string) -> result<string, error>;

    /// The set of errors which may be raised by functions in this interface.
    variant error {
        /// The provided variable name is invalid.
        invalid-name(string),
        /// The provided variable is undefined.
        undefined(string),
        /// A variables provider specific error has occurred.
        provider(string),
        /// Some implementation-specific error has occurred.
        other(string),
    }
}