JS: Make implicit this receivers explicit

javascript/ql/src/Declarations/IneffectiveParameterType.ql

@@ -26,7 +26,7 @@ predicate isCommonPredefinedTypeName(string name) {
  */
 class DefiniteTypeDecl extends TypeDecl {
   DefiniteTypeDecl() {
-    this = any(ImportSpecifier im).getLocal() implies exists(getLocalTypeName().getAnAccess())
+    this = any(ImportSpecifier im).getLocal() implies exists(this.getLocalTypeName().getAnAccess())
   }
 }
 

javascript/ql/src/Declarations/UnstableCyclicImport.ql

@@ -63,7 +63,7 @@ predicate isImportedAtRuntime(Module source, Module destination) {
  */
 class CandidateVarAccess extends VarAccess {
   CandidateVarAccess() {
-    isImmediatelyExecutedContainer(getContainer()) and
+    isImmediatelyExecutedContainer(this.getContainer()) and
     not exists(ExportSpecifier spec | spec.getLocal() = this)
   }
 }

javascript/ql/src/Declarations/UnusedVariable.ql

@@ -132,7 +132,7 @@ class ImportVarDeclProvider extends Stmt {
    * Gets an unacceptable unused variable declared by this import.
    */
   UnusedLocal getAnUnacceptableUnusedLocal() {
-    result = getAVarDecl().getVariable() and
+    result = this.getAVarDecl().getVariable() and
     not whitelisted(result)
   }
 }