[Merged by Bors] - Fix string.prototype methods and add static string methods

boa/src/builtins/number/conversions.rs

@@ -84,3 +84,12 @@ pub(crate) fn f64_to_int32(number: f64) -> i32 {
 pub(crate) fn f64_to_uint32(number: f64) -> u32 {
     f64_to_int32(number) as u32
 }
+
+/// Converts a 64-bit floating point number to an `u16` according to the [`ToUint16`][ToUint16] algorithm.
+///
+/// [ToUint16]: https://tc39.es/ecma262/#sec-touint16
+#[inline]
+pub(crate) fn f64_to_uint16(number: f64) -> u16 {
+    let n = f64_to_int32(number) as u32;
+    (n % (1 << 16)) as u16
+}

boa/src/builtins/number/mod.rs

@@ -26,7 +26,7 @@ use num_traits::{float::FloatCore, Num};
 
 mod conversions;
 
-pub(crate) use conversions::{f64_to_int32, f64_to_uint32};
+pub(crate) use conversions::{f64_to_int32, f64_to_uint16, f64_to_uint32};
 
 #[cfg(test)]
 mod tests;