pub fn to_i64(&self) -> Result<I64, JsValue> {
        i64::try_extract_from(self.0.clone())
            .map_err(to_js)
            .map(I64::from)
    }
/// Extract i64 value, returning error if wrong type
Extract i64 value, returning error if wrong type
Extract i64 value returning error if wrong type
pub fn to_i64(&self) -> Result<I64, JsValue> {
        i64::try_extract_from(self.0.clone())
            .map_err(to_js)
            .map(I64::from)
    }
pub fn to_i64 ( & self ) -> Result < I64 , JsValue > { i64 :: try_extract_from ( self . 0 . clone ( ) ) . map_err ( to_js ) . map ( I64 :: from ) }
Extract i64 value, returning error if wrong type
Extract i64 value returning error if wrong type
&self
&self