diff --git a/developer/js/source/lexical-model-compiler/model-definitions.ts b/developer/js/source/lexical-model-compiler/model-definitions.ts
index 4b5b47edf1..a4eca801c7 100644
--- a/developer/js/source/lexical-model-compiler/model-definitions.ts
+++ b/developer/js/source/lexical-model-compiler/model-definitions.ts
@@ -1,15 +1,15 @@
-import { defaultApplyCasing, 
-         defaultCasedSearchTermToKey, 
+import { defaultApplyCasing,
+         defaultCasedSearchTermToKey,
          defaultSearchTermToKey
        } from "./model-defaults";
 
 /**
  * Processes certain defined model behaviors in such a way that the needed closures
  * may be safely compiled to a JS file and loaded within the LMLayer.
- * 
+ *
  * This is accomplished by writing out a 'pseudoclosure' within the model's IIFE,
  * then used to build _actual_ closures at LMLayer load time.  This 'pseudoclosure'
- * will very closely match the organizational patterns of this class in order to 
+ * will very closely match the organizational patterns of this class in order to
  * facilitate the maintenance of this approach.
  */
 export class ModelDefinitions {
@@ -18,10 +18,10 @@ export class ModelDefinitions {
    * A closure fully implementing the model's defined `applyCasing` behavior with
    * the function parameter preset to the version-appropriate default.
    * `defaults.applyCasing` is captured as part of the closure.
-   * 
+   *
    * During compilation of some models (such as Trie-based wordlist templated models),
    * this closure will be directly used as part of searchTermToKey.
-   * 
+   *
    * In compiled code, this will instead be defined in-line as an autogenerated closure
    * using the other properties of the pseudoclosure.
    */
@@ -34,7 +34,7 @@ export class ModelDefinitions {
    *
    * During compilation of some models (such as Trie-based wordlist templated models),
    * this closure will be directly utilized when compiling the lexicon.
-   * 
+   *
    * In compiled code, this will instead be defined in-line as an autogenerated closure
    * using the other properties of the pseudoclosure.
    */
@@ -42,7 +42,7 @@ export class ModelDefinitions {
 
   /**
    * Contains embedded 'default' implementations that may be needed for
-   * closures in the compiled version, annotated with the current version 
+   * closures in the compiled version, annotated with the current version
    * of Developer.
    */
   private defaults: {
@@ -54,7 +54,7 @@ export class ModelDefinitions {
 
   /**
    * Contains the model-specific definitions specified in the model's source.
-   * 
+   *
    * These definitions may expect `defaults.applyCasing` as a parameter in
    * their final closures.
    */
@@ -95,10 +95,10 @@ export class ModelDefinitions {
     } else if(modelSource.languageUsesCasing == false) {
       this.model.searchTermToKey = defaultSearchTermToKey;
     } else {
-      // If languageUsesCasing is not defined, then we use pre-14.0 behavior, 
+      // If languageUsesCasing is not defined, then we use pre-14.0 behavior,
       // which expects a lowercased default.
       this.model.searchTermToKey = defaultCasedSearchTermToKey;
-      // Needed to provide pre-14.0 default lowercasing as part of the 
+      // Needed to provide pre-14.0 default lowercasing as part of the
       // search-term keying operation.
       this.defaults.applyCasing = defaultApplyCasing;
       // For compile-time use.
@@ -120,18 +120,18 @@ export class ModelDefinitions {
   /**
    * Writes out a compiled JS version of the pseudoclosure, preserving all function
    * implementations.
-   * 
+   *
    * This should be written to the file within the same IIFE as the model but BEFORE
    * the model itself, as the model will need to refer to the definitions herein.
    */
   compileDefinitions(): string {
     let defn: string = '';
-    defn += `let ${PSEUDOCLOSURE} = {\n`
+    defn += `var ${PSEUDOCLOSURE} = {\n`
 
     // ----------------------
     // START - the 'defaults', which are common within the same Developer version.
     defn += `  defaults: {\n    version: "${this.defaults.version}"`;
-    
+
     // Only write out `applyCasing` if and when it is needed.
     if(this.defaults.applyCasing) {
       defn += `,\n    applyCasing: ${this.defaults.applyCasing.toString()}`;
@@ -153,7 +153,7 @@ export class ModelDefinitions {
     // END - model-specific definitions
 
     // ----------------------
-    // START - compiled closures.  Given those definitions, write out the 
+    // START - compiled closures.  Given those definitions, write out the
     // pseudoclosure-referencing closures for the needed methods.
 
     // We should be able to define these closures in-line with the object's
@@ -163,7 +163,7 @@ export class ModelDefinitions {
     if(this.model.applyCasing) {
       // A major potential issue:  if the user wants to call extra custom functions that they've written.
       //
-      // `applyCasing` recursion SHOULD be fine if they write `this.applyCasing() and forward all arguments 
+      // `applyCasing` recursion SHOULD be fine if they write `this.applyCasing() and forward all arguments
       // appropriately, as it will be known as `applyCasing` on the runtime `this` (`model`) object.
       //
       // Similarly, as long as any helper functions are similarly compiled and stored as part of `model`,