Fix.

node_modules/istanbul-reports/lib/teamcity/index.js

@@ -0,0 +1,54 @@
+/*
+ Copyright 2012-2015, Yahoo Inc.
+ Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+'use strict';
+
+function TeamcityReport(opts) {
+    opts = opts || {};
+    this.file = opts.file || null;
+    this.blockName = opts.blockName || 'Code Coverage Summary';
+}
+
+function lineForKey(value, teamcityVar) {
+    return (
+        "##teamcity[buildStatisticValue key='" +
+        teamcityVar +
+        "' value='" +
+        value +
+        "']"
+    );
+}
+
+TeamcityReport.prototype.onStart = function(node, context) {
+    const metrics = node.getCoverageSummary();
+    const cw = context.writer.writeFile(this.file);
+
+    cw.println('');
+    cw.println("##teamcity[blockOpened name='" + this.blockName + "']");
+
+    //Statements Covered
+    cw.println(
+        lineForKey(metrics.statements.covered, 'CodeCoverageAbsBCovered')
+    );
+    cw.println(lineForKey(metrics.statements.total, 'CodeCoverageAbsBTotal'));
+
+    //Branches Covered
+    cw.println(lineForKey(metrics.branches.covered, 'CodeCoverageAbsRCovered'));
+    cw.println(lineForKey(metrics.branches.total, 'CodeCoverageAbsRTotal'));
+
+    //Functions Covered
+    cw.println(
+        lineForKey(metrics.functions.covered, 'CodeCoverageAbsMCovered')
+    );
+    cw.println(lineForKey(metrics.functions.total, 'CodeCoverageAbsMTotal'));
+
+    //Lines Covered
+    cw.println(lineForKey(metrics.lines.covered, 'CodeCoverageAbsLCovered'));
+    cw.println(lineForKey(metrics.lines.total, 'CodeCoverageAbsLTotal'));
+
+    cw.println("##teamcity[blockClosed name='" + this.blockName + "']");
+    cw.close();
+};
+
+module.exports = TeamcityReport;