Fix clippy

nj-core/src/basic.rs

@@ -1,7 +1,6 @@
 use std::ptr;
 use std::ffi::CString;
 use std::collections::VecDeque;
-use std::convert::TryFrom;
 
 use log::error;
 use log::debug;
@@ -287,7 +286,7 @@ impl JsEnv {
         ))?;
 
         // truncate arg to actual received count
-        args.resize(usize::try_from(argc).unwrap(), ptr::null_mut());
+        args.resize(argc, ptr::null_mut());
 
         Ok(JsCallback::new(JsEnv::new(self.0), this, args))
     }
@@ -633,8 +632,7 @@ impl JsEnv {
             &mut len
         ))?;
 
-        let array: &[u8] =
-            unsafe { slice::from_raw_parts(data as *const u8, usize::try_from(len).unwrap()) };
+        let array: &[u8] = unsafe { slice::from_raw_parts(data as *const u8, len) };
 
         Ok(array)
     }

nj-core/src/bigint.rs

@@ -1,5 +1,4 @@
 use std::ptr;
-use std::convert::TryFrom;
 
 use log::trace;
 
@@ -30,7 +29,7 @@ impl<'a> JSValue<'a> for BigInt {
         ))?;
 
         // Now we actually get the sign and the vector.
-        let mut napi_buffer: Vec<u64> = vec![0; usize::try_from(word_count).unwrap()];
+        let mut napi_buffer: Vec<u64> = vec![0; word_count];
         let mut sign = 0;
 
         crate::napi_call_result!(crate::sys::napi_get_value_bigint_words(

nj-core/src/convert.rs

@@ -1,4 +1,4 @@
-use std::convert::TryFrom;
+
 use std::ptr;
 
 use crate::sys::napi_value;
@@ -331,7 +331,7 @@ impl JSValue<'_> for String {
 
         string_size += 1;
 
-        let chars_vec: Vec<u8> = vec![0; usize::try_from(string_size).unwrap()];
+        let chars_vec: Vec<u8> = vec![0; string_size];
         let mut chars: Box<[u8]> = chars_vec.into_boxed_slice();
         let mut read_size: usize = 0;
 
@@ -343,7 +343,7 @@ impl JSValue<'_> for String {
             &mut read_size
         ))?;
 
-        let my_chars: Vec<u8> = chars[0..usize::try_from(read_size).unwrap()].into();
+        let my_chars: Vec<u8> = chars[0..read_size].into();
 
         String::from_utf8(my_chars).map_err(|err| err.into())
     }
@@ -365,10 +365,7 @@ impl<'a> JSValue<'a> for &'a str {
         ))?;
 
         unsafe {
-            let i8slice = std::slice::from_raw_parts(
-                data as *mut ::std::os::raw::c_char,
-                usize::try_from(len).unwrap(),
-            );
+            let i8slice = std::slice::from_raw_parts(data as *mut ::std::os::raw::c_char, len);
             let u8slice = &*(i8slice as *const _ as *const [u8]);
             std::str::from_utf8(u8slice).map_err(|err| err.into())
         }