[!NOTE]

The project to be configured:

	Value	Note
	multi-stage-cd

Initialize the project

1. Make the directory

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   mkdir multi-stage-cd
   cd multi-stage-cd
   

2. Initialize git repo

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   git init
   

3. Install typescript and node env for ts

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   npm install typescript ts-node @types/node --save-dev
   

   (--save-dev flag indicates that the packages are necessary for development purposes.)

4. Configure .gitignore to prevent packages being added to git repo

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   echo "node_modules/*" > .gitignore
   

5. Initalize ts project

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   tsc --init
   

Configure Jest test env

1. Install jest

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   npm install jest ts-jest @types/jest --save-dev
   

2. Configure jest

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   npx ts-jest config:init
   

3. Modify tsconfig.json

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   {
     "compilerOptions": {
       "target": "ES6",
       "module": "commonjs",
       "strict": true,
       "esModuleInterop": true,
       "outDir": "./dist",
       "rootDir": "./src"
     },
     "include": ["src/**/*.ts", "tests/**/*.ts"],
     "exclude": ["node_modules"]
   }