Initial commit - Event Planner application

node_modules/@nestjs/common/serializer/class-serializer.interceptor.js

@@ -0,0 +1,77 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ClassSerializerInterceptor = void 0;
+const tslib_1 = require("tslib");
+const operators_1 = require("rxjs/operators");
+const core_1 = require("../decorators/core");
+const file_stream_1 = require("../file-stream");
+const load_package_util_1 = require("../utils/load-package.util");
+const shared_utils_1 = require("../utils/shared.utils");
+const class_serializer_constants_1 = require("./class-serializer.constants");
+let classTransformer = {};
+// NOTE (external)
+// We need to deduplicate them here due to the circular dependency
+// between core and common packages
+const REFLECTOR = 'Reflector';
+/**
+ * @publicApi
+ */
+let ClassSerializerInterceptor = class ClassSerializerInterceptor {
+    constructor(reflector, defaultOptions = {}) {
+        this.reflector = reflector;
+        this.defaultOptions = defaultOptions;
+        classTransformer =
+            defaultOptions?.transformerPackage ??
+                (0, load_package_util_1.loadPackage)('class-transformer', 'ClassSerializerInterceptor', () => require('class-transformer'));
+        if (!defaultOptions?.transformerPackage) {
+            require('class-transformer');
+        }
+    }
+    intercept(context, next) {
+        const contextOptions = this.getContextOptions(context);
+        const options = {
+            ...this.defaultOptions,
+            ...contextOptions,
+        };
+        return next
+            .handle()
+            .pipe((0, operators_1.map)((res) => this.serialize(res, options)));
+    }
+    /**
+     * Serializes responses that are non-null objects nor streamable files.
+     */
+    serialize(response, options) {
+        if (!(0, shared_utils_1.isObject)(response) || response instanceof file_stream_1.StreamableFile) {
+            return response;
+        }
+        return Array.isArray(response)
+            ? response.map(item => this.transformToPlain(item, options))
+            : this.transformToPlain(response, options);
+    }
+    transformToPlain(plainOrClass, options) {
+        if (!plainOrClass) {
+            return plainOrClass;
+        }
+        if (!options.type) {
+            return classTransformer.classToPlain(plainOrClass, options);
+        }
+        if (plainOrClass instanceof options.type) {
+            return classTransformer.classToPlain(plainOrClass, options);
+        }
+        const instance = classTransformer.plainToInstance(options.type, plainOrClass, options);
+        return classTransformer.classToPlain(instance, options);
+    }
+    getContextOptions(context) {
+        return this.reflector.getAllAndOverride(class_serializer_constants_1.CLASS_SERIALIZER_OPTIONS, [
+            context.getHandler(),
+            context.getClass(),
+        ]);
+    }
+};
+exports.ClassSerializerInterceptor = ClassSerializerInterceptor;
+exports.ClassSerializerInterceptor = ClassSerializerInterceptor = tslib_1.__decorate([
+    (0, core_1.Injectable)(),
+    tslib_1.__param(0, (0, core_1.Inject)(REFLECTOR)),
+    tslib_1.__param(1, (0, core_1.Optional)()),
+    tslib_1.__metadata("design:paramtypes", [Object, Object])
+], ClassSerializerInterceptor);