diff --git a/components/script/dom/eventtarget.rs b/components/script/dom/eventtarget.rs
index bc726d02119e..b65fcc6baf15 100644
--- a/components/script/dom/eventtarget.rs
+++ b/components/script/dom/eventtarget.rs
@@ -36,7 +36,8 @@ use crate::dom::workerglobalscope::WorkerGlobalScope;
 use crate::realms::{enter_realm, InRealm};
 use dom_struct::dom_struct;
 use fnv::FnvHasher;
-use js::jsapi::{JS_GetFunctionObject, SourceText};
+use js::jsapi::JS_GetFunctionObject;
+use js::rust::transform_u16_to_source_text;
 use js::rust::wrappers::CompileFunction;
 use js::rust::{CompileOptionsWrapper, RootedObjectVectorWrapper};
 use libc::c_char;
@@ -47,7 +48,6 @@ use std::collections::HashMap;
 use std::default::Default;
 use std::ffi::CString;
 use std::hash::BuildHasherDefault;
-use std::marker::PhantomData;
 use std::mem;
 use std::ops::{Deref, DerefMut};
 use std::rc::Rc;
@@ -539,12 +539,7 @@ impl EventTarget {
                 name.as_ptr(),
                 args.len() as u32,
                 args.as_ptr(),
-                &mut SourceText {
-                    units_: body.as_ptr() as *const _,
-                    length_: body.len() as u32,
-                    ownsUnits_: false,
-                    _phantom_0: PhantomData,
-                },
+                &mut transform_u16_to_source_text(&body),
             )
         });
         if handler.get().is_null() {
diff --git a/components/script/dom/globalscope.rs b/components/script/dom/globalscope.rs
index 9e55f593f59d..ffa63d4eb37e 100644
--- a/components/script/dom/globalscope.rs
+++ b/components/script/dom/globalscope.rs
@@ -67,9 +67,10 @@ use ipc_channel::router::ROUTER;
 use js::glue::{IsWrapper, UnwrapObjectDynamic};
 use js::jsapi::{CurrentGlobalOrNull, GetNonCCWObjectGlobal};
 use js::jsapi::{HandleObject, Heap};
-use js::jsapi::{JSContext, JSObject, SourceText};
+use js::jsapi::{JSContext, JSObject};
 use js::jsval::{JSVal, UndefinedValue};
 use js::panic::maybe_resume_unwind;
+use js::rust::transform_str_to_source_text;
 use js::rust::wrappers::Evaluate2;
 use js::rust::{get_object_class, CompileOptionsWrapper, ParentRuntime, Runtime};
 use js::rust::{HandleValue, MutableHandleValue};
@@ -97,7 +98,6 @@ use std::cell::{Cell, RefCell, RefMut};
 use std::collections::hash_map::Entry;
 use std::collections::{HashMap, VecDeque};
 use std::ffi::CString;
-use std::marker::PhantomData;
 use std::mem;
 use std::ops::Index;
 use std::rc::Rc;
@@ -2166,12 +2166,7 @@ impl GlobalScope {
                     Evaluate2(
                         *cx,
                         options.ptr,
-                        &mut SourceText {
-                            units_: code.as_ptr() as *const _,
-                            length_: code.len() as u32,
-                            ownsUnits_: false,
-                            _phantom_0: PhantomData,
-                        },
+                        &mut transform_str_to_source_text(code),
                         rval,
                     )
                 };
diff --git a/components/script/script_module.rs b/components/script/script_module.rs
index 61f6405062bb..7979356ce717 100644
--- a/components/script/script_module.rs
+++ b/components/script/script_module.rs
@@ -46,13 +46,14 @@ use js::jsapi::{
     CompileModule, ExceptionStackBehavior, GetModuleResolveHook, JSRuntime, SetModuleResolveHook,
 };
 use js::jsapi::{GetRequestedModules, SetModuleMetadataHook};
-use js::jsapi::{GetWaitForAllPromise, ModuleEvaluate, ModuleInstantiate, SourceText};
+use js::jsapi::{GetWaitForAllPromise, ModuleEvaluate, ModuleInstantiate};
 use js::jsapi::{Heap, JSContext, JS_ClearPendingException, SetModulePrivate};
 use js::jsapi::{JSAutoRealm, JSObject, JSString};
 use js::jsapi::{SetModuleDynamicImportHook, SetScriptPrivateReferenceHooks};
 use js::jsval::{JSVal, PrivateValue, UndefinedValue};
 use js::rust::jsapi_wrapped::{GetRequestedModuleSpecifier, JS_GetPendingException};
 use js::rust::jsapi_wrapped::{JS_GetArrayLength, JS_GetElement};
+use js::rust::transform_u16_to_source_text;
 use js::rust::wrappers::JS_SetPendingException;
 use js::rust::CompileOptionsWrapper;
 use js::rust::IntoHandle;
@@ -68,7 +69,6 @@ use servo_url::ServoUrl;
 use std::cmp::Ordering;
 use std::collections::{HashMap, HashSet};
 use std::ffi;
-use std::marker::PhantomData;
 use std::rc::Rc;
 use std::str::FromStr;
 use std::sync::{Arc, Mutex};
@@ -76,15 +76,6 @@ use url::ParseError as UrlParseError;
 
 use indexmap::IndexSet;
 
-pub fn get_source_text(source: &[u16]) -> SourceText<u16> {
-    SourceText {
-        units_: source.as_ptr() as *const _,
-        length_: source.len() as u32,
-        ownsUnits_: false,
-        _phantom_0: PhantomData,
-    }
-}
-
 #[allow(unsafe_code)]
 unsafe fn gen_type_error(global: &GlobalScope, string: String) -> ModuleError {
     rooted!(in(*global.get_cx()) let mut thrown = UndefinedValue());
@@ -368,13 +359,11 @@ impl ModuleTree {
         let compile_options =
             unsafe { CompileOptionsWrapper::new(*global.get_cx(), url_cstr.as_ptr(), 1) };
 
-        let mut source = get_source_text(&module);
-
         unsafe {
             rooted!(in(*global.get_cx()) let mut module_script = CompileModule(
                 *global.get_cx(),
                 compile_options.ptr,
-                &mut source,
+                &mut transform_u16_to_source_text(&module),
             ));
 
             if module_script.is_null() {