JS: Rename getAnImmediateUse -> getASource

javascript/ql/test/ApiGraphs/VerifyAssertions.qll

@@ -24,7 +24,7 @@ private DataFlow::Node getNode(API::Node nd, string kind) {
   result = nd.getARhs()
   or
   kind = "use" and
-  result = nd.getAUse()
+  result = nd.getAValueReachableFromSource()
 }
 
 private string getLoc(DataFlow::Node nd) {

javascript/ql/test/ApiGraphs/typed/NodeOfType.ql

@@ -1,4 +1,4 @@
 import javascript
 
 from string mod, string tp
-select mod, tp, API::Node::ofType(mod, tp).getAnImmediateUse()
+select mod, tp, API::Node::ofType(mod, tp).getASource()

javascript/ql/test/library-tests/Routing/test.ql

@@ -9,7 +9,7 @@ class Taint extends TaintTracking::Configuration {
   override predicate isSource(DataFlow::Node node) {
     node.(DataFlow::CallNode).getCalleeName() = "source"
     or
-    node = testInstance().getMember("getSource").getReturn().getAnImmediateUse()
+    node = testInstance().getMember("getSource").getReturn().getASource()
   }
 
   override predicate isSink(DataFlow::Node node) {

javascript/ql/test/library-tests/frameworks/Express/MiddlewareFlow.qll

@@ -1,3 +1,3 @@
 import javascript
 
-query DataFlow::Node dbUse() { result = API::moduleImport("@example/db").getInstance().getAUse() }
+query DataFlow::Node dbUse() { result = API::moduleImport("@example/db").getInstance().getAValueReachableFromSource() }

javascript/ql/test/library-tests/frameworks/data/test.ql

@@ -62,7 +62,7 @@ class BasicTaintTracking extends TaintTracking::Configuration {
   override predicate isSource(DataFlow::Node source) {
     source.(DataFlow::CallNode).getCalleeName() = "source"
     or
-    source = ModelOutput::getASourceNode("test-source").getAnImmediateUse()
+    source = ModelOutput::getASourceNode("test-source").getASource()
   }
 
   override predicate isSink(DataFlow::Node sink) {