1 files changed, 78 insertions, 0 deletions
diff --git a/node_modules/istanbul-lib-instrument/dist/read-coverage.js b/node_modules/istanbul-lib-instrument/dist/read-coverage.js
new file mode 100644
index 000000000..73e74291a
--- /dev/null
+++ b/node_modules/istanbul-lib-instrument/dist/read-coverage.js
@@ -0,0 +1,78 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = readInitialCoverage;
+
+var _constants = require('./constants');
+
+var _babylon = require('babylon');
+
+var _babelTraverse = require('babel-traverse');
+
+var _babelTraverse2 = _interopRequireDefault(_babelTraverse);
+
+var _babelTypes = require('babel-types');
+
+var t = _interopRequireWildcard(_babelTypes);
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function readInitialCoverage(code) {
+    if (typeof code !== 'string') {
+        throw new Error('Code must be a string');
+    }
+
+    // Parse as leniently as possible
+    var ast = (0, _babylon.parse)(code, {
+        allowImportExportEverywhere: true,
+        allowReturnOutsideFunction: true,
+        allowSuperOutsideMethod: true,
+        sourceType: "script", // I think ?
+        plugins: ["*"]
+    });
+
+    var covScope = void 0;
+    (0, _babelTraverse2.default)(ast, {
+        ObjectProperty: function ObjectProperty(path) {
+            var node = path.node;
+
+            if (!node.computed && t.isIdentifier(node.key) && node.key.name === _constants.MAGIC_KEY) {
+                var magicValue = path.get('value').evaluate();
+                if (!magicValue.confident || magicValue.value !== _constants.MAGIC_VALUE) {
+                    return;
+                }
+                covScope = path.scope.getFunctionParent();
+                path.stop();
+            }
+        }
+    });
+
+    if (!covScope) {
+        return null;
+    }
+
+    var result = {};
+
+    var _arr = ['path', 'hash', 'gcv', 'coverageData'];
+    for (var _i = 0; _i < _arr.length; _i++) {
+        var key = _arr[_i];
+        var binding = covScope.getOwnBinding(key);
+        if (!binding) {
+            return null;
+        }
+        var valuePath = binding.path.get('init');
+        var value = valuePath.evaluate();
+        if (!value.confident) {
+            return null;
+        }
+        result[key] = value.value;
+    }
+
+    delete result.coverageData[_constants.MAGIC_KEY];
+
+    return result;
+}
+\ No newline at end of file