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PiperOrigin-RevId: 704880480

Author: rahul-kamat

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

@@ -443,8 +443,7 @@ protected PassListBuilder getChecks() {
 
     checks.maybeAdd(checkConsts);
 
-    // TODO(user): Enable this pass when it is ready.
-    // checks.maybeAdd(rewriteCallerCodeLocation);
+    checks.maybeAdd(rewriteCallerCodeLocation);
 
     if (!options.getConformanceConfigs().isEmpty()) {
       checks.maybeAdd(checkConformance);

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

@@ -139,9 +139,9 @@ private boolean isGoogCallerLocationMisused(Node n, Node parent) {
         return false;
       }
 
-      if (n.getSourceFileName().contains("javascript/closure/base.js")) {
-        // This is the definition of the debug build runtime implementation of goog.callerLocation.
-        // This is not a misuse.
+      if (parent.isAssign() && n.getNext() != null && n.getNext().isFunction()) {
+        // This is the definition of goog.callerLocation, so this is not a misuse.
+        // i.e: `goog.callerLocation = function(...) { ... }`
         return false;
       }
 

test/com/google/javascript/jscomp/integration/IntegrationTest.java

@@ -4592,6 +4592,39 @@ public void testGoogScopeWithAngular() {
             "$jscomp$scope$98447280$0$fn[\"$inject\"] = [\"a\", \"b\"];"));
   }
 
+  @Test
+  public void testRewriteCallerCodeLocation() {
+    // This unit test tests the following:
+    // (1) RewriteCallerCodeLocation pass adds the code location to the call-site of functions
+    // that have goog.callerLocation as a default parameter.
+    // (2) ReplaceIdGenerators pass replaces the code location with an obfuscated string.
+    CompilerOptions options = createCompilerOptions();
+
+    options.setReplaceIdGenerators(true);
+
+    test(
+        options,
+        lines(
+            "/** @idGenerator {consistent} */",
+            "goog.callerLocationIdInternalDoNotCallOrElse = function(id) {",
+            "  return /** @type {!goog.CodeLocation} */ (id);",
+            "};",
+            "function signal(here = goog.callerLocation()) {}",
+            "const mySignal = signal();",
+            "const mySignal2 = signal();",
+            "const mySignal3 = signal();"),
+        lines(
+            "goog.callerLocationIdInternalDoNotCallOrElse = function(id) {",
+            "  return id;",
+            "};",
+            "function signal(here) {",
+            "  here = here === void 0 ? goog.callerLocation() : here;",
+            "}",
+            "var mySignal = signal('a');",
+            "var mySignal2 = signal('b');",
+            "var mySignal3 = signal('c');"));
+  }
+
   @Test
   public void testGitHubIssue3861() {
     CompilerOptions options = createCompilerOptions();