Run the new ModuleMapCreator pass and test its hot swap functionality.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=232399219

src/com/google/javascript/jscomp/DefaultPassConfig.java

@@ -59,6 +59,7 @@
 import com.google.javascript.jscomp.lint.CheckRequiresAndProvidesSorted;
 import com.google.javascript.jscomp.lint.CheckUnusedLabels;
 import com.google.javascript.jscomp.lint.CheckUselessBlocks;
+import com.google.javascript.jscomp.modules.ModuleMapCreator;
 import com.google.javascript.jscomp.parsing.ParserRunner;
 import com.google.javascript.jscomp.parsing.parser.FeatureSet;
 import com.google.javascript.rhino.IR;
@@ -156,6 +157,7 @@ protected List<PassFactory> getTranspileOnlyPasses() {
 
     passes.add(checkVariableReferencesForTranspileOnly);
     passes.add(gatherModuleMetadataPass);
+    passes.add(createModuleMapPass);
 
     if (options.getLanguageIn().toFeatureSet().has(FeatureSet.Feature.MODULES)) {
       passes.add(rewriteGoogJsImports);
@@ -275,6 +277,7 @@ protected List<PassFactory> getChecks() {
     checks.add(checkTypeImportCodeReferences);
 
     checks.add(gatherModuleMetadataPass);
+    checks.add(createModuleMapPass);
 
     if (options.enables(DiagnosticGroups.LINT_CHECKS)) {
       checks.add(lintChecks);
@@ -1090,6 +1093,12 @@ private void assertValidOrderForChecks(List<PassFactory> checks) {
         closureCheckModule,
         "Need to gather module metadata before checking closure modules.");
 
+    assertPassOrder(
+        checks,
+        gatherModuleMetadataPass,
+        createModuleMapPass,
+        "Need to gather module metadata before scanning modules.");
+
     assertPassOrder(
         checks,
         checkClosureImports,
@@ -3436,6 +3445,19 @@ protected FeatureSet featureSet() {
         }
       };
 
+  private final HotSwapPassFactory createModuleMapPass =
+      new HotSwapPassFactory(PassNames.CREATE_MODULE_MAP) {
+        @Override
+        protected HotSwapCompilerPass create(AbstractCompiler compiler) {
+          return new ModuleMapCreator(compiler, compiler.getModuleMetadataMap());
+        }
+
+        @Override
+        protected FeatureSet featureSet() {
+          return ES_NEXT;
+        }
+      };
+
   private final PassFactory gatherGettersAndSetters =
       new PassFactory(PassNames.GATHER_GETTERS_AND_SETTERS, /* isOneTimePass= */ true) {
         @Override

src/com/google/javascript/jscomp/PassNames.java

@@ -42,6 +42,7 @@ public final class PassNames {
   public static final String COLLAPSE_PROPERTIES = "collapseProperties";
   public static final String COLLAPSE_VARIABLE_DECLARATIONS = "collapseVariableDeclarations";
   public static final String CONVERT_TO_DOTTED_PROPERTIES = "convertToDottedProperties";
+  public static final String CREATE_MODULE_MAP = "createModuleMap";
   public static final String CROSS_CHUNK_CODE_MOTION = "crossChunkCodeMotion";
   public static final String CROSS_CHUNK_METHOD_MOTION = "crossChunkMethodMotion";
   public static final String DEAD_ASSIGNMENT_ELIMINATION = "deadAssignmentsElimination";