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diff --git a/src/node_modules/class-validator/esm5/metadata/MetadataStorage.js b/src/node_modules/class-validator/esm5/metadata/MetadataStorage.js
new file mode 100644
index 0000000..836f4fc
--- /dev/null
+++ b/src/node_modules/class-validator/esm5/metadata/MetadataStorage.js
@@ -0,0 +1,116 @@
+import { ValidationSchemaToMetadataTransformer } from "../validation-schema/ValidationSchemaToMetadataTransformer";
+/**
+ * Gets metadata storage.
+ * Metadata storage follows the best practices and stores metadata in a global variable.
+ */
+export function getMetadataStorage() {
+    if (typeof window !== "undefined") {
+        window.global = window;
+    }
+    if (!global.classValidatorMetadataStorage)
+        global.classValidatorMetadataStorage = new MetadataStorage();
+    return global.classValidatorMetadataStorage;
+}
+/**
+ * Storage all metadatas.
+ */
+var MetadataStorage = /** @class */ (function () {
+    function MetadataStorage() {
+        // -------------------------------------------------------------------------
+        // Private properties
+        // -------------------------------------------------------------------------
+        this.validationMetadatas = [];
+        this.constraintMetadatas = [];
+    }
+    Object.defineProperty(MetadataStorage.prototype, "hasValidationMetaData", {
+        get: function () {
+            return !!this.validationMetadatas.length;
+        },
+        enumerable: true,
+        configurable: true
+    });
+    // -------------------------------------------------------------------------
+    // Public Methods
+    // -------------------------------------------------------------------------
+    /**
+     * Adds a new validation metadata.
+     */
+    MetadataStorage.prototype.addValidationSchema = function (schema) {
+        var _this = this;
+        var validationMetadatas = new ValidationSchemaToMetadataTransformer().transform(schema);
+        validationMetadatas.forEach(function (validationMetadata) { return _this.addValidationMetadata(validationMetadata); });
+    };
+    /**
+     * Adds a new validation metadata.
+     */
+    MetadataStorage.prototype.addValidationMetadata = function (metadata) {
+        this.validationMetadatas.push(metadata);
+    };
+    /**
+     * Adds a new constraint metadata.
+     */
+    MetadataStorage.prototype.addConstraintMetadata = function (metadata) {
+        this.constraintMetadatas.push(metadata);
+    };
+    /**
+     * Groups metadata by their property names.
+     */
+    MetadataStorage.prototype.groupByPropertyName = function (metadata) {
+        var grouped = {};
+        metadata.forEach(function (metadata) {
+            if (!grouped[metadata.propertyName])
+                grouped[metadata.propertyName] = [];
+            grouped[metadata.propertyName].push(metadata);
+        });
+        return grouped;
+    };
+    /**
+     * Gets all validation metadatas for the given object with the given groups.
+     */
+    MetadataStorage.prototype.getTargetValidationMetadatas = function (targetConstructor, targetSchema, groups) {
+        // get directly related to a target metadatas
+        var originalMetadatas = this.validationMetadatas.filter(function (metadata) {
+            if (metadata.target !== targetConstructor && metadata.target !== targetSchema)
+                return false;
+            if (metadata.always)
+                return true;
+            if (groups && groups.length > 0)
+                return metadata.groups && !!metadata.groups.find(function (group) { return groups.indexOf(group) !== -1; });
+            return true;
+        });
+        // get metadatas for inherited classes
+        var inheritedMetadatas = this.validationMetadatas.filter(function (metadata) {
+            // if target is a string it's means we validate agains a schema, and there is no inheritance support for schemas
+            if (typeof metadata.target === "string")
+                return false;
+            if (metadata.target === targetConstructor)
+                return false;
+            if (metadata.target instanceof Function &&
+                !(targetConstructor.prototype instanceof metadata.target))
+                return false;
+            if (metadata.always)
+                return true;
+            if (groups && groups.length > 0)
+                return metadata.groups && !!metadata.groups.find(function (group) { return groups.indexOf(group) !== -1; });
+            return true;
+        });
+        // filter out duplicate metadatas, prefer original metadatas instead of inherited metadatas
+        var uniqueInheritedMetadatas = inheritedMetadatas.filter(function (inheritedMetadata) {
+            return !originalMetadatas.find(function (originalMetadata) {
+                return originalMetadata.propertyName === inheritedMetadata.propertyName &&
+                    originalMetadata.type === inheritedMetadata.type;
+            });
+        });
+        return originalMetadatas.concat(uniqueInheritedMetadatas);
+    };
+    /**
+     * Gets all validator constraints for the given object.
+     */
+    MetadataStorage.prototype.getTargetValidatorConstraints = function (target) {
+        return this.constraintMetadatas.filter(function (metadata) { return metadata.target === target; });
+    };
+    return MetadataStorage;
+}());
+export { MetadataStorage };
+
+//# sourceMappingURL=MetadataStorage.js.map