Here are some problems I faced, and how I solved them
Error
file:///C:/Users/IFEANYI/Documents/2024/production%20API/index.js:7
import corsOptions from "./config/corsOptions.js";
^^^^^^^^^^^
SyntaxError: The requested module './config/corsOptions.js' does not provide an export named 'default'
at ModuleJob._instantiate (node:internal/modules/esm/module_job:124:21)
at async ModuleJob.run (node:internal/modules/esm/module_job:190:5)Solution
How to properly export a function and import the function in another file.
// export a variable
export const allowedOrigins = ["joy", "sam"];
// import a variable
import {allowedOrigins} from "./allowedOirgins.js"Error
Error Error: connect ECONNREFUSED ::1:6379
Solution
Remember to turn on the redis server.
open redis-cli.exe
redis-cli ping
If it returns "PONG", Redis is running. If it returns "Could not connect to Redis" or "Connection refused", then Redis is not running.
How to handle dotenv in your node.js code.
import dotenv from 'dotenv';
dotenv.config();Explaining the dockerfile
FROM node:20-alpine // It instructs Docker to use a pre-built image containing Node.js version 20. This indicates that the base image is built on Alpine Linux, resulting in a smaller and more efficient Docker image.
LABEL maintainer="chimaifeanyi" // provide information about the image
WORKDIR /app // this will create a folder called app inside the image -
COPY package*.json ./ // It copies the package.json file and potentially other matching files from your local project directory into the root directory (app) of the Docker image being built.
RUN npm install // this will install project dependencies in the container.
COPY . . // copy everything from our local project to work directory (app) in the docker image.
CMD ["node", "index.js"] // this is the command that will be used, when a container is created from the image
// when you start a container from this image, it will run the command (node index.js) to start the application.
EXPOSE 3500 // this tells docker that the nodejs application is running on port 3500 within the container
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