Fixes two warnings when building the JS bindings

lib/src/model/xsd/date_time.rs

@@ -10,7 +10,7 @@ use std::error::Error;
 use std::fmt;
 use std::hash::{Hash, Hasher};
 use std::str::FromStr;
-use std::time::{SystemTime, SystemTimeError};
+use std::time::SystemTimeError;
 
 /// [XML Schema `dateTime` datatype](https://www.w3.org/TR/xmlschema11-2/#dateTime) implementation.
 #[derive(Eq, PartialEq, PartialOrd, Debug, Clone, Copy, Hash)]
@@ -1351,6 +1351,8 @@ fn since_unix_epoch() -> Result<Duration, DateTimeError> {
 
 #[cfg(not(target_arch = "wasm32"))]
 fn since_unix_epoch() -> Result<Duration, DateTimeError> {
+    use std::time::SystemTime;
+
     SystemTime::now()
         .duration_since(SystemTime::UNIX_EPOCH)?
         .try_into()

lib/src/store/binary_encoder.rs

@@ -11,6 +11,7 @@ use std::mem::size_of;
 type EncodedTerm = crate::store::numeric_encoder::EncodedTerm<StrHash>;
 type EncodedQuad = crate::store::numeric_encoder::EncodedQuad<StrHash>;
 
+pub const LATEST_STORAGE_VERSION: u64 = 0;
 pub const WRITTEN_TERM_MAX_SIZE: usize = size_of::<u8>() + 2 * size_of::<StrHash>();
 
 // Encoded term type blocks

lib/src/store/mod.rs

@@ -33,8 +33,6 @@ use std::io;
 use std::io::{BufRead, Write};
 use std::iter::Iterator;
 
-const LATEST_STORAGE_VERSION: u64 = 0;
-
 pub(crate) trait ReadableEncodedStore: StrLookup {
     type QuadsIter: Iterator<Item = Result<EncodedQuad<Self::StrId>, Self::Error>> + 'static;
 

lib/src/store/rocksdb.rs

@@ -10,7 +10,7 @@ use crate::store::numeric_encoder::{
 };
 use crate::store::{
     dump_dataset, dump_graph, get_encoded_quad_pattern, load_dataset, load_graph,
-    ReadableEncodedStore, WritableEncodedStore, LATEST_STORAGE_VERSION,
+    ReadableEncodedStore, WritableEncodedStore,
 };
 use rocksdb::*;
 use std::collections::HashMap;

lib/src/store/sled.rs

@@ -10,7 +10,7 @@ use crate::store::numeric_encoder::{
 };
 use crate::store::{
     dump_dataset, dump_graph, get_encoded_quad_pattern, load_dataset, load_graph,
-    ReadableEncodedStore, StoreOrParseError, WritableEncodedStore, LATEST_STORAGE_VERSION,
+    ReadableEncodedStore, StoreOrParseError, WritableEncodedStore,
 };
 use sled::transaction::{
     ConflictableTransactionError, TransactionError, Transactional, TransactionalTree,