1 files changed, 31 insertions, 0 deletions
diff --git a/node_modules/istanbul-lib-instrument/dist/visitor.js b/node_modules/istanbul-lib-instrument/dist/visitor.js
index edceff7ff..79744abf2 100644
--- a/node_modules/istanbul-lib-instrument/dist/visitor.js
+++ b/node_modules/istanbul-lib-instrument/dist/visitor.js
@@ -22,6 +22,8 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 // istanbul ignore comment pattern
 var COMMENT_RE = /^\s*istanbul\s+ignore\s+(if|else|next)(?=\W|$)/;
+// istanbul ignore file pattern
+var COMMENT_FILE_RE = /^\s*istanbul\s+ignore\s+(file)(?=\W|$)/;
 // source map URL pattern
 var SOURCE_MAP_RE = /[#@]\s*sourceMappingURL=(.*)\s*$/m;
 
@@ -376,6 +378,19 @@ function blockProp(prop) {
     };
 }
 
+function makeParenthesizedExpression(path) {
+    var T = this.types;
+    if (path.node) {
+        path.replaceWith(T.parenthesizedExpression(path.node));
+    }
+}
+
+function parenthesizedExpressionProp(prop) {
+    return function (path) {
+        makeParenthesizedExpression.call(this, path.get(prop));
+    };
+}
+
 function convertArrowExpression(path) {
     var n = path.node;
     var T = this.types;
@@ -467,6 +482,7 @@ var codeVisitor = {
     AssignmentPattern: entries(coverAssignmentPattern),
     BlockStatement: entries(), // ignore processing only
     ClassMethod: entries(coverFunction),
+    ClassDeclaration: entries(parenthesizedExpressionProp('superClass')),
     ExpressionStatement: entries(coverStatement),
     BreakStatement: entries(coverStatement),
     ContinueStatement: entries(coverStatement),
@@ -501,6 +517,11 @@ var coverageTemplate = (0, _babelTemplate2.default)('\n    var COVERAGE_VAR = (f
 function alreadyInstrumented(path, visitState) {
     return path.scope.hasBinding(visitState.varName);
 }
+function shouldIgnoreFile(programNode) {
+    return programNode.parent && programNode.parent.comments.some(function (c) {
+        return COMMENT_FILE_RE.test(c.value);
+    });
+}
 /**
  * programVisitor is a `babel` adaptor for instrumentation.
  * It returns an object with two methods `enter` and `exit`.
@@ -529,6 +550,11 @@ function programVisitor(types) {
     var visitState = new VisitState(types, sourceFilePath, opts.inputSourceMap);
     return {
         enter: function enter(path) {
+            if (shouldIgnoreFile(path.find(function (p) {
+                return p.isProgram();
+            }))) {
+                return;
+            }
             if (alreadyInstrumented(path, visitState)) {
                 return;
             }
@@ -540,6 +566,11 @@ function programVisitor(types) {
             }
             visitState.cov.freeze();
             var coverageData = visitState.cov.toJSON();
+            if (shouldIgnoreFile(path.find(function (p) {
+                return p.isProgram();
+            }))) {
+                return { fileCoverage: coverageData, sourceMappingURL: visitState.sourceMappingURL };
+            }
             coverageData[_constants.MAGIC_KEY] = _constants.MAGIC_VALUE;
             var hash = (0, _crypto.createHash)(_constants.SHA).update(JSON.stringify(coverageData)).digest('hex');
             var coverageNode = T.valueToNode(coverageData);