我想驗證端點在呼叫它時收到的輸入。因此，我在 NodeJS Web 應用程式中安裝了express-validator。但是，當我嘗試使用它時，它會引發錯誤：
Cannot find module 'express-validator' or its corresponding type declarations
當我匯入它（即import { validationResult } from "express-validator";）或將其設定為常量并需要它時，就會發生這種情況。在后者中，它宣告它找不到模塊。我已經對專案進行了 dockerized，這是我設定的 dockerfile：
FROM node:12
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 8000
CMD ["npm", "run", "dev"]
目前，我沒有運行生產版本，這就是我使用 dev 運行的原因。這是我的 docker-compose 檔案：
services:
db:
image: postgres:12
environment:
- POSTGRES_DB=server_side
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=123321
app:
build:
context: .
dockerfile: Dockerfile
volumes:
- ./src:/app/src
ports:
- "8000:8000"
depends_on:
- db
environment:
- POSTGRES_DB=server_side
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=123321
- POSTGRES_HOST=db
安裝模塊時，它會添加到我的依賴項中：
{
"name": "Servier-side",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"build": "tsc",
"dev": "concurrently \"nodemon\" \"nodemon -x tsoa spec\"",
"start": "node build/index.js",
"predev": "npm run swagger",
"prebuild": "npm run swagger",
"swagger": "tsoa spec",
"typeorm": "node --require ts-node/register ./node_modules/typeorm/cli.js",
"migrate:generate": "npm run typeorm migration:generate -- -n",
"migrate:run": "npm run typeorm migration:run",
"migrate:revert": "npm run typeorm migration:revert",
"schema:drop": "npm run typeorm schema:drop"
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
"@types/express": "^4.17.13",
"@types/morgan": "^1.9.3",
"@types/node": "^16.11.10",
"@types/swagger-ui-express": "^4.1.3",
"concurrently": "^6.4.0",
"nodemon": "^2.0.15",
"ts-node": "^10.4.0",
"typescript": "^4.5.2"
},
"dependencies": {
"express": "^4.17.1",
"express-validator": "^6.13.0",
"morgan": "^1.10.0",
"pg": "^8.7.1",
"reflect-metadata": "^0.1.13",
"swagger-ui-express": "^4.1.6",
"tsoa": "^3.2.1",
"typeorm": "^0.2.41"
},
"nodemonConfig": {
"watch": [
"src"
],
"ext": "ts",
"exec": "ts-node src/index.ts"
}
}
如果有人能闡明此事，我將不勝感激。只是為了排除可能的原因，我也嘗試過Joi，但最終還是遇到了同樣的問題。所以，我想了解的是導致問題的原因 - 為什么對其余依賴項有效，而不是對這個依賴項有效，應該采取什么措施來解決問題？
uj5u.com熱心網友回復：
這種錯誤通常是當您需要為模塊添加@types 依賴項時。
uj5u.com熱心網友回復：
使用構建標志運行 docker composedocker-compose up --build修復了該問題。
轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/366989.html
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