feat: 盘点表计算模块

package.json

@@ -88,6 +88,7 @@
     "helmet": "^7.1.0",
     "ioredis": "^5.3.2",
     "lodash": "^4.17.21",
+    "mathjs": "^12.4.0",
     "minio": "^7.1.3",
     "mysql2": "^3.9.1",
     "nanoid": "^3.3.7",

pnpm-lock.yaml

@@ -131,6 +131,9 @@ dependencies:
   lodash:
     specifier: ^4.17.21
     version: 4.17.21
+  mathjs:
+    specifier: ^12.4.0
+    version: 12.4.0
   minio:
     specifier: ^7.1.3
     version: 7.1.3
@@ -4881,6 +4884,10 @@ packages:
       dot-prop: 5.3.0
     dev: true
 
+  /complex.js@2.1.1:
+    resolution: {integrity: sha512-8njCHOTtFFLtegk6zQo0kkVX1rngygb/KQI6z1qZxlFI3scluC+LVTCFbrkWjBv4vvLlbQ9t88IPMC6k95VTTg==}
+    dev: false
+
   /component-emitter@1.3.1:
     resolution: {integrity: sha512-T0+barUSQRTUQASh8bx02dl+DhF54GtIDY13Y3m9oWTklKbb3Wv974meRpeZ3lp1JpLVECWWNHC4vaG2XHXouQ==}
     dev: true
@@ -5429,6 +5436,10 @@ packages:
     engines: {node: '>=0.10.0'}
     dev: true
 
+  /decimal.js@10.4.3:
+    resolution: {integrity: sha512-VBBaLc1MgL5XpzgIP7ny5Z6Nx3UrRkIViUkPUdtl9aya5amy3De1gsUUSB1g3+3sExYNjCAsAznmukyxCb1GRA==}
+    dev: false
+
   /decode-uri-component@0.2.2:
     resolution: {integrity: sha512-FqUYQ+8o158GyGTrMFJms9qh3CqTKvAqgqsTnkLI8sKu0028orqBhxNMFkFen0zGyg6epACD32pjVk58ngIErQ==}
     engines: {node: '>=0.10'}
@@ -5912,6 +5923,10 @@ packages:
   /escape-html@1.0.3:
     resolution: {integrity: sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow==}
 
+  /escape-latex@1.2.0:
+    resolution: {integrity: sha512-nV5aVWW1K0wEiUIEdZ4erkGGH8mDxGyxSeqPzRNtWP7ataw+/olFObw7hujFWlVjNsaDFw5VZ5NzVSIqRgfTiw==}
+    dev: false
+
   /escape-string-applescript@1.0.0:
     resolution: {integrity: sha512-4/hFwoYaC6TkpDn9A3pTC52zQPArFeXuIfhUtCGYdauTzXVP9H3BDr3oO/QzQehMpLDC7srvYgfwvImPFGfvBA==}
     engines: {node: '>=0.10.0'}
@@ -6662,6 +6677,10 @@ packages:
     engines: {node: '>= 0.6'}
     dev: false
 
+  /fraction.js@4.3.4:
+    resolution: {integrity: sha512-pwiTgt0Q7t+GHZA4yaLjObx4vXmmdcS0iSJ19o8d/goUGgItX9UZWKWNnLHehxviD8wU2IWRsnR8cD5+yOJP2Q==}
+    dev: false
+
   /fresh@0.5.2:
     resolution: {integrity: sha512-zJ2mQYM18rEFOudeV4GShTGIQ7RbzA7ozbU9I/XBpm7kqgMywgmylMwXHxZJmkVoYkna9d2pVXVXPdYTP9ej8Q==}
     engines: {node: '>= 0.6'}
@@ -7671,6 +7690,10 @@ packages:
     dev: false
     optional: true
 
+  /javascript-natural-sort@0.7.1:
+    resolution: {integrity: sha512-nO6jcEfZWQXDhOiBtG2KvKyEptz7RVbpGP4vTD2hLBdmNQSsCiicO2Ioinv6UI4y9ukqnBpy+XZ9H6uLNgJTlw==}
+    dev: false
+
   /jest-changed-files@29.7.0:
     resolution: {integrity: sha512-fEArFiwf1BpQ+4bXSprcDc3/x4HSzL4al2tozwVpDFpsxALjLYdyiIK4e5Vz66GQJIbXJ82+35PtysofptNX2w==}
     engines: {node: ^14.15.0 || ^16.10.0 || >=18.0.0}
@@ -8709,6 +8732,22 @@ packages:
     hasBin: true
     dev: true
 
+  /mathjs@12.4.0:
+    resolution: {integrity: sha512-4Moy0RNjwMSajEkGGxNUyMMC/CZAcl87WBopvNsJWB4E4EFebpTedr+0/rhqmnOSTH3Wu/3WfiWiw6mqiaHxVw==}
+    engines: {node: '>= 18'}
+    hasBin: true
+    dependencies:
+      '@babel/runtime': 7.23.9
+      complex.js: 2.1.1
+      decimal.js: 10.4.3
+      escape-latex: 1.2.0
+      fraction.js: 4.3.4
+      javascript-natural-sort: 0.7.1
+      seedrandom: 3.0.5
+      tiny-emitter: 2.1.0
+      typed-function: 4.1.1
+    dev: false
+
   /memfs@3.5.3:
     resolution: {integrity: sha512-UERzLsxzllchadvbPs5aolHh65ISpKpM+ccLbOJ8/vvpBKmAWf+la7dXFy7Mr0ySHbdHrFv5kGFCUHHe6GFEmw==}
     engines: {node: '>= 4.0.0'}
@@ -10861,6 +10900,10 @@ packages:
     resolution: {integrity: sha512-6aU+Rwsezw7VR8/nyvKTx8QpWH9FrcYiXXlqC4z5d5XQBDRqtbfsRjnwGyqbi3gddNtWHuEk9OANUotL26qKUw==}
     dev: false
 
+  /seedrandom@3.0.5:
+    resolution: {integrity: sha512-8OwmbklUNzwezjGInmZ+2clQmExQPvomqjL7LFqOYqtmuxRgQYqOD3mHaU+MvZn5FLUeVxVfQjwLZW/n/JFuqg==}
+    dev: false
+
   /segmentit@2.0.3:
     resolution: {integrity: sha512-7mn2XL3OdTUQ+AhHz7SbgyxLTaQRzTWQNVwiK+UlTO8aePGbSwvKUzTwE4238+OUY9MoR6ksAg35zl8sfTunQQ==}
     requiresBuild: true
@@ -11635,6 +11678,10 @@ packages:
   /through@2.3.8:
     resolution: {integrity: sha512-w89qg7PI8wAdvX60bMDP+bFoD5Dvhm9oLheFp5O4a2QF0cSBGsBX4qZmadPMvVqlLJBBci+WqGGOAPvcDeNSVg==}
 
+  /tiny-emitter@2.1.0:
+    resolution: {integrity: sha512-NB6Dk1A9xgQPMoGqC5CVXn123gWyte215ONT5Pp5a0yt4nlEoO1ZWeCwpncaekPHXO60i47ihFnZPiRPjRMq4Q==}
+    dev: false
+
   /tiny-inflate@1.0.3:
     resolution: {integrity: sha512-pkY1fj1cKHb2seWDy0B16HeWyczlJA9/WW3u3c4z/NiWDsO3DOU5D7nhTLE9CF0yXv/QZFY7sEJmj24dK+Rrqw==}
 
@@ -11893,6 +11940,11 @@ packages:
     resolution: {integrity: sha512-dzlvlNlt6AXU7EBSfpAscydQ7gXB+pPGsPnfJnZpiNJBDj7IaJzQlBZYGdEi4R9HmPdBv2XmWJ6YUtoTa7lmCw==}
     dev: true
 
+  /typed-function@4.1.1:
+    resolution: {integrity: sha512-Pq1DVubcvibmm8bYcMowjVnnMwPVMeh0DIdA8ad8NZY2sJgapANJmiigSUwlt+EgXxpfIv8MWrQXTIzkfYZLYQ==}
+    engines: {node: '>= 14'}
+    dev: false
+
   /typedarray@0.0.6:
     resolution: {integrity: sha512-/aCDEGatGvZ2BIk+HmLf4ifCJFwvKFNb9/JeZPMulfgFracn9QFcAf5GO8B/mweUjSoblS5In0cWhqpfs/5PQA==}
     dev: true

src/constants/error-code.constant.ts

@@ -55,5 +55,8 @@ export enum ErrorEnum {
   PRODUCT_EXIST = '1406:产品已存在',
 
   // Contract
-  CONTRACT_NUMBER_EXIST = '1407:存在相同的合同编号'
+  CONTRACT_NUMBER_EXIST = '1407:存在相同的合同编号',
+
+  // Inventory 库存不足
+  INVENTORY_INSUFFICIENT = '1408:库存不足'
 }

src/modules/common/base.service.ts

@@ -0,0 +1,11 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class BaseService {
+  generateInventoryNumber(): string {
+    // Generate a random inventory number
+    return Math.floor(Math.random() * 1000000).toString();
+  }
+
+  // Add more common methods here
+}

src/modules/materials_inventory/in_out/materials_in_out.service.ts

@@ -16,6 +16,8 @@ import { MaterialsInOutEntity } from './materials_in_out.entity';
 import { fieldSearch } from '~/shared/database/field-search';
 import { ParamConfigEntity } from '~/modules/system/param-config/param-config.entity';
 import { MaterialsInOrOutEnum, ParamConfigEnum } from '~/constants/enum';
+import { MaterialsInventoryEntity } from '../materials_inventory.entity';
+import { MaterialsInventoryService } from '../materials_inventory.service';
 
 @Injectable()
 export class MaterialsInOutService {
@@ -26,7 +28,8 @@ export class MaterialsInOutService {
     @InjectRepository(Storage)
     private storageRepository: Repository<Storage>,
     @InjectRepository(ParamConfigEntity)
-    private paramConfigRepository: Repository<ParamConfigEntity>
+    private paramConfigRepository: Repository<ParamConfigEntity>,
+    private materialsInventoryService: MaterialsInventoryService
   ) {}
   /**
    * 查询所有出入库记录
@@ -57,7 +60,7 @@ export class MaterialsInOutService {
       .where(fieldSearch(ext))
       .andWhere('materialsInOut.isDelete = 0')
       .addOrderBy('materialsInOut.createdAt', 'DESC');
-      
+
     if (productName) {
       sqb.andWhere('product.name like :productName', { productName: `%${productName}%` });
     }
@@ -82,8 +85,10 @@ export class MaterialsInOutService {
   async create(dto: MaterialsInOutDto): Promise<void> {
     let { inOrOut, inventoryNumber } = dto;
     if (inOrOut === MaterialsInOrOutEnum.In) {
+      // 入库
       inventoryNumber = await this.generateInventoryNumber();
     } else {
+      // 出库
       const inRecord = await this.materialsInOutRepository.findOne({
         where: {
           inventoryNumber
@@ -92,9 +97,15 @@ export class MaterialsInOutService {
       const { productId } = inRecord;
       dto.productId = productId;
     }
-    await this.materialsInOutRepository.insert({
+
-      ...this.materialsInOutRepository.create(dto),
+    await this.entityManager.transaction(async manager => {
-      inventoryNumber
+      // 1.生成出入库记录
+      const { productId, quantity } = await manager.create(MaterialsInOutEntity, {
+        ...this.materialsInOutRepository.create(dto),
+        inventoryNumber
+      });
+      // 2.更新库存
+      await this.materialsInventoryService.inInventory({ productId, inQuantity: quantity });
     });
   }
 

src/modules/materials_inventory/materials_inventory.controller.ts

@@ -23,7 +23,7 @@ export const permissions = definePermission('app:materials_inventory', {
   EXPORT: 'export'
 } as const);
 
-@ApiTags('MaterialsI Inventory - 原材料盘点')
+@ApiTags('MaterialsI Inventory - 原材料库存')
 @ApiSecurityAuth()
 @Controller('materials-inventory')
 export class MaterialsInventoryController {
@@ -40,7 +40,7 @@ export class MaterialsInventoryController {
   }
 
   @Get()
-  @ApiOperation({ summary: '获取原材料盘点列表' })
+  @ApiOperation({ summary: '获取原材料库存列表' })
   @ApiResult({ type: [MaterialsInventoryEntity], isPage: true })
   @Perm(permissions.LIST)
   async list(@Query() dto: MaterialsInventoryQueryDto) {
@@ -48,7 +48,7 @@ export class MaterialsInventoryController {
   }
 
   @Get(':id')
-  @ApiOperation({ summary: '获取原材料盘点信息' })
+  @ApiOperation({ summary: '获取原材料库存信息' })
   @ApiResult({ type: MaterialsInventoryDto })
   @Perm(permissions.READ)
   async info(@IdParam() id: number) {
@@ -56,21 +56,21 @@ export class MaterialsInventoryController {
   }
 
   @Post()
-  @ApiOperation({ summary: '新增原材料盘点' })
+  @ApiOperation({ summary: '新增原材料库存' })
   @Perm(permissions.CREATE)
   async create(@Body() dto: MaterialsInventoryDto): Promise<void> {
     await this.miService.create(dto);
   }
 
   @Put(':id')
-  @ApiOperation({ summary: '更新原材料盘点' })
+  @ApiOperation({ summary: '更新原材料库存' })
   @Perm(permissions.UPDATE)
   async update(@IdParam() id: number, @Body() dto: MaterialsInventoryUpdateDto): Promise<void> {
     await this.miService.update(id, dto);
   }
 
   @Delete(':id')
-  @ApiOperation({ summary: '删除原材料盘点' })
+  @ApiOperation({ summary: '删除原材料库存' })
   @Perm(permissions.DELETE)
   async delete(@IdParam() id: number): Promise<void> {
     await this.miService.delete(id);

src/modules/materials_inventory/materials_inventory.entity.ts

@@ -1,193 +1,41 @@
 import { ApiProperty } from '@nestjs/swagger';
 import { Column, Entity, JoinTable, ManyToMany, Relation } from 'typeorm';
 import { CommonEntity } from '~/common/entity/common.entity';
-import { Storage } from '../tools/storage/storage.entity';
 
 @Entity({ name: 'materials_inventory' })
 export class MaterialsInventoryEntity extends CommonEntity {
-  @Column({ name: 'company_name', type: 'varchar', length: 255, comment: '公司名称' })
-  @ApiProperty({ description: '公司名称' })
-  companyName: number;
-
   @Column({
-    name: 'product',
+    name: 'product_id',
     type: 'int',
-    comment: '产品名称(字典)'
+    comment: '产品'
   })
-  @ApiProperty({ description: '产品名称(字典)' })
+  @ApiProperty({ description: '产品' })
-  product: number;
+  productId: number;
 
   @Column({
-    name: 'unit',
+    name: 'quantity',
-    type: 'int',
-    comment: '单位(字典)'
-  })
-  @ApiProperty({ description: '单位(字典)' })
-  unit: number;
-
-  @Column({
-    name: 'previous_inventory_quantity',
     type: 'int',
     default: 0,
-    comment: '之前的库存数量'
+    comment: '库存产品数量'
   })
-  @ApiProperty({ description: '之前的库存数量' })
+  @ApiProperty({ description: '库存产品数量' })
-  previousInventoryQuantity: number;
+  quantity: number;
 
   @Column({
-    name: 'previous_unit_price',
+    name: 'unit_price',
     type: 'decimal',
     precision: 10,
     default: 0,
     scale: 2,
-    comment: '之前的单价'
+    comment: '库存产品单价'
   })
-  @ApiProperty({ description: '之前的单价' })
+  @ApiProperty({ description: '库存产品单价' })
-  previousUnitPrice: number;
+  unitPrice: number;
-
-  @Column({
-    name: 'previous_amount',
-    type: 'decimal',
-    precision: 10,
-    scale: 2,
-    default: 0,
-    comment: '之前的金额'
-  })
-  @ApiProperty({ description: '之前的金额' })
-  previousAmount: number;
-
-  @Column({
-    name: 'inventory_time',
-    type: 'date',
-    nullable: true,
-    comment: '入库时间'
-  })
-  @ApiProperty({ description: '入库时间' })
-  inventoryTime: Date;
-
-  @Column({
-    name: 'inventory_quantity',
-    type: 'int',
-    default: 0,
-    comment: '入库数量'
-  })
-  @ApiProperty({ description: '入库数量' })
-  inventoryQuantity: number;
-
-  @Column({
-    name: 'inventory_unit_price',
-    type: 'decimal',
-    precision: 10,
-    default: 0,
-    scale: 2,
-    comment: '入库单价'
-  })
-  @ApiProperty({ description: '入库单价' })
-  inventoryUnitPrice: number; 
-
-  @Column({
-    name: 'inventory_amount',
-    type: 'decimal',
-    precision: 10,
-    default: 0,
-    scale: 2,
-    comment: '入库金额'
-  })
-  @ApiProperty({ description: '入库金额' })
-  inventoryAmount: number;
-
-  @Column({
-    name: 'out_time',
-    type: 'date',
-    nullable: true,
-    comment: '出库时间'
-  })
-  @ApiProperty({ description: '出库时间' })
-  outime: Date;
-
-  @Column({
-    name: 'out_quantity',
-    type: 'int',
-    default: 0,
-    comment: '出库数量'
-  })
-  @ApiProperty({ description: '出库数量' })
-  outQuantity: number;
-
-  @Column({
-    name: 'out_unit_price',
-    type: 'decimal',
-    precision: 10,
-    default: 0,
-    scale: 2,
-    comment: '出库单价'
-  })
-  @ApiProperty({ description: '出库单价' })
-  outUnitPrice: number;
-
-  @Column({
-    name: 'out_amount',
-    type: 'decimal',
-    precision: 10,
-    default: 0,
-    scale: 2,
-    comment: '出库金额'
-  })
-  @ApiProperty({ description: '出库金额' })
-  outAmount: number;
-
-  @Column({
-    name: 'current_inventory_quantity',
-    type: 'int',
-    default: 0,
-    comment: '现在的结存数量'
-  })
-  @ApiProperty({ description: '现在的结存数量' })
-  currentInventoryQuantity: number;
-
-  @Column({
-    name: 'current_unit_price',
-    type: 'decimal',
-    precision: 10,
-    default: 0,
-    scale: 2,
-    comment: '现在的单价'
-  })
-  @ApiProperty({ description: '现在的单价' })
-  currentUnitPrice: number;
-
-  @Column({
-    name: 'current_amount',
-    type: 'decimal',
-    precision: 10,
-    default: 0,
-    scale: 2,
-    comment: '现在的金额'
-  })
-  @ApiProperty({ description: '现在的金额' })
-  currentAmount: number;
-
-  @Column({ name: 'agent', type: 'varchar', length: 50, comment: '经办人', nullable: true })
-  @ApiProperty({ description: '经办人' })
-  agent: string;
-
-  @Column({
-    name: 'issuance_number',
-    type: 'varchar',
-    length: 100,
-    comment: '领料单号'
-  })
-  @ApiProperty({ description: '领料单号' })
-  issuanceNumber: string;
 
   @Column({ name: 'remark', type: 'varchar', length: 255, comment: '备注', nullable: true })
   @ApiProperty({ description: '备注' })
   remark: string;
 
-  @Column({ name: 'project', type: 'varchar', length: 255, comment: '项目', nullable: false })
-  @ApiProperty({ description: '项目' })
-  project: string;
-
   @Column({ name: 'is_delete', type: 'tinyint', default: 0, comment: '是否删除' })
   @ApiProperty({ description: '删除状态：0未删除，1已删除' })
   isDelete: number;

src/modules/materials_inventory/materials_inventory.service.ts

@@ -18,6 +18,9 @@ import { fieldSearch } from '~/shared/database/field-search';
 import { groupBy, uniqBy } from 'lodash';
 import { MaterialsInOrOutEnum } from '~/constants/enum';
 import { ProjectEntity } from '../project/project.entity';
+import { calcNumber } from '~/utils';
+import { BusinessException } from '~/common/exceptions/biz.exception';
+import { ErrorEnum } from '~/constants/error-code.constant';
 @Injectable()
 export class MaterialsInventoryService {
   const;
@@ -52,7 +55,7 @@ export class MaterialsInventoryService {
       .leftJoin('mio.product', 'product')
       .leftJoin('product.unit', 'unit')
       .leftJoin('product.company', 'company')
-      .addSelect(['project.id','project.name', 'product.name', 'unit.label', 'company.name'])
+      .addSelect(['project.id', 'project.name', 'product.name', 'unit.label', 'company.name'])
       .where(fieldSearch({ time }))
       .andWhere('mio.isDelete = 0');
 
@@ -262,14 +265,14 @@ export class MaterialsInventoryService {
   }
 
   /**
-   * 新增
+   * 新增库存
    */
   async create(dto: MaterialsInventoryDto): Promise<void> {
     await this.materialsInventoryRepository.insert(dto);
   }
 
   /**
-   * 更新
+   * 更新库存
    */
   async update(id: number, data: Partial<MaterialsInventoryUpdateDto>): Promise<void> {
     await this.entityManager.transaction(async manager => {
@@ -279,6 +282,79 @@ export class MaterialsInventoryService {
     });
   }
 
+  /**
+   * 产品入库
+   */
+  async inInventory(data: {
+    productId: number;
+    inQuantity: number;
+    unitPrice?: number;
+  }): Promise<void> {
+    const { productId, inQuantity, unitPrice } = data;
+
+    await this.entityManager.transaction(async manager => {
+      const exsitedInventory = await this.materialsInventoryRepository.findOne({
+        where: { productId },
+        lock: { mode: 'pessimistic_write' } // 开启悲观行锁，防止脏读和修改
+      });
+
+      // 若不存在库存，直接新增库存
+      if (!exsitedInventory) {
+        await this.entityManager.transaction(async manager => {
+          if (exsitedInventory) {
+            await manager.insert(MaterialsInventoryEntity, {
+              productId,
+              unitPrice,
+              quantity: inQuantity
+            });
+          }
+        });
+        return;
+      }
+      // 若存在库存，则库存增加
+      let { quantity, id } = exsitedInventory;
+      const newQuantity = calcNumber(quantity || 0, inQuantity || 0, 'add');
+      if (isNaN(newQuantity)) {
+        throw new Error('库存数量不合法');
+      }
+      await manager.update(MaterialsInventoryEntity, id, {
+        quantity: newQuantity
+      });
+    });
+  }
+
+  /**
+   * 产品入库
+   */
+  async outInventory(data: { productId: number; outQuantity: number }): Promise<void> {
+    const { productId, outQuantity } = data;
+
+    await this.entityManager.transaction(async manager => {
+      // 开启悲观行锁，防止脏读和修改
+      const inventory = await this.materialsInventoryRepository.findOne({
+        where: { productId },
+        lock: { mode: 'pessimistic_write' }
+      });
+      // 检查库存剩余
+      if (inventory.quantity < outQuantity) {
+        throw new BusinessException(ErrorEnum.INVENTORY_INSUFFICIENT);
+      }
+      // 库存充足，可以出库
+      let { quantity, id } = inventory;
+      const newQuantity = calcNumber(quantity || 0, outQuantity || 0, 'subtract');
+      if (isNaN(newQuantity)) {
+        throw new Error('库存数量不合法');
+      }
+      await manager.update(MaterialsInventoryEntity, id, {
+        quantity: newQuantity
+      });
+    });
+  }
+
+  /**
+   * 产品出库
+   */
+
   /**
    * 删除
    */

src/utils/tool.util.ts

@@ -1,6 +1,7 @@
 import { customAlphabet, nanoid } from 'nanoid';
 
 import { md5 } from './crypto.util';
+import { add, subtract, multiply, divide, bignumber, BigNumber } from 'mathjs';
 
 export function getAvatar(mail: string | undefined) {
   if (!mail) return '';
@@ -53,3 +54,25 @@ export const hashString = function (str, seed = 0) {
   h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507) ^ Math.imul(h1 ^ (h1 >>> 13), 3266489909);
   return 4294967296 * (2097151 & h2) + (h1 >>> 0);
 };
+/**
+ * 使用mathjs进行四则运算，不丢失精度
+ */
+export function calcNumber(
+  firstNumber: number,
+  secondNumber: number,
+  option: CalclateOption
+): number {
+  switch (option) {
+    case 'add':
+      return add(bignumber(firstNumber), bignumber(secondNumber)).toNumber();
+    case 'subtract':
+      return subtract(bignumber(firstNumber), bignumber(secondNumber)).toNumber();
+    // case 'multiply':
+    //   return multiply(bignumber(firstNumber), bignumber(secondNumber));
+    // case 'divide':
+    //   return divide(bignumber(firstNumber), bignumber(secondNumber));
+    default:
+      return 0;
+  }
+}
+type CalclateOption = 'add' | 'subtract' | 'multiply' | 'divide';