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+/*
+ Copyright 2012-2015, Yahoo Inc.
+ Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+'use strict';
+
+/**
+ * istanbul-lib-coverage exports an API that allows you to create and manipulate
+ * file coverage, coverage maps (a set of file coverage objects) and summary
+ * coverage objects. File coverage for the same file can be merged as can
+ * entire coverage maps.
+ *
+ * @module Exports
+ */
+const { FileCoverage } = require('./lib/file-coverage');
+const { CoverageMap } = require('./lib/coverage-map');
+const { CoverageSummary } = require('./lib/coverage-summary');
+
+module.exports = {
+    /**
+     * creates a coverage summary object
+     * @param {Object} obj an argument with the same semantics
+     *  as the one passed to the `CoverageSummary` constructor
+     * @returns {CoverageSummary}
+     */
+    createCoverageSummary(obj) {
+        if (obj && obj instanceof CoverageSummary) {
+            return obj;
+        }
+        return new CoverageSummary(obj);
+    },
+    /**
+     * creates a CoverageMap object
+     * @param {Object} obj optional - an argument with the same semantics
+     *  as the one passed to the CoverageMap constructor.
+     * @returns {CoverageMap}
+     */
+    createCoverageMap(obj) {
+        if (obj && obj instanceof CoverageMap) {
+            return obj;
+        }
+        return new CoverageMap(obj);
+    },
+    /**
+     * creates a FileCoverage object
+     * @param {Object} obj optional - an argument with the same semantics
+     *  as the one passed to the FileCoverage constructor.
+     * @returns {FileCoverage}
+     */
+    createFileCoverage(obj) {
+        if (obj && obj instanceof FileCoverage) {
+            return obj;
+        }
+        return new FileCoverage(obj);
+    }
+};
+
+/** classes exported for reuse */
+module.exports.classes = {
+    /**
+     * the file coverage constructor
+     */
+    FileCoverage
+};