Fix.

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

@@ -0,0 +1,68 @@
+/*
+ Copyright 2012-2015, Yahoo Inc.
+ Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+'use strict';
+
+function LcovOnlyReport(opts) {
+    this.file = opts.file || 'lcov.info';
+    this.contentWriter = null;
+}
+
+LcovOnlyReport.prototype.onStart = function(root, context) {
+    this.contentWriter = context.writer.writeFile(this.file);
+};
+
+LcovOnlyReport.prototype.onDetail = function(node) {
+    const fc = node.getFileCoverage();
+    const writer = this.contentWriter;
+    const functions = fc.f;
+    const functionMap = fc.fnMap;
+    const lines = fc.getLineCoverage();
+    const branches = fc.b;
+    const branchMap = fc.branchMap;
+    const summary = node.getCoverageSummary();
+
+    writer.println('TN:'); //no test name
+    writer.println('SF:' + fc.path);
+
+    Object.keys(functionMap).forEach(key => {
+        const meta = functionMap[key];
+        writer.println('FN:' + [meta.decl.start.line, meta.name].join(','));
+    });
+    writer.println('FNF:' + summary.functions.total);
+    writer.println('FNH:' + summary.functions.covered);
+
+    Object.keys(functionMap).forEach(key => {
+        const stats = functions[key];
+        const meta = functionMap[key];
+        writer.println('FNDA:' + [stats, meta.name].join(','));
+    });
+
+    Object.keys(lines).forEach(key => {
+        const stat = lines[key];
+        writer.println('DA:' + [key, stat].join(','));
+    });
+    writer.println('LF:' + summary.lines.total);
+    writer.println('LH:' + summary.lines.covered);
+
+    Object.keys(branches).forEach(key => {
+        const branchArray = branches[key];
+        const meta = branchMap[key];
+        const line = meta.loc.start.line;
+        let i = 0;
+        branchArray.forEach(b => {
+            writer.println('BRDA:' + [line, key, i, b].join(','));
+            i += 1;
+        });
+    });
+    writer.println('BRF:' + summary.branches.total);
+    writer.println('BRH:' + summary.branches.covered);
+    writer.println('end_of_record');
+};
+
+LcovOnlyReport.prototype.onEnd = function() {
+    this.contentWriter.close();
+};
+
+module.exports = LcovOnlyReport;