1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

use crate::{api, prelude::*};
use std::{mem::MaybeUninit, os::raw::c_char};

#[derive(Copy, Clone, Debug)]
pub struct JsUndefined(pub(crate) JsValue);

impl JsUndefined {
    pub(crate) fn from_value(value: JsValue) -> JsUndefined {
        JsUndefined(value)
    }

    /// This API returns the Undefined object.
    pub fn new(env: NapiEnv) -> NapiResult<JsUndefined> {
        let value = napi_call!(=napi_get_undefined, env);
        Ok(JsUndefined(JsValue::from_raw(env, value)))
    }
}

napi_value_t!(JsUndefined);

impl NapiValueCheck for JsUndefined {
    fn check(&self) -> NapiResult<bool> {
        Ok(self.kind()? == NapiValuetype::Undefined)
    }
}