ExpressWebJS

# Bunjs with ExpressWebJs

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Bun.js is a JavaScript runtime that is designed to be fast and efficient. By using Bun.js with ExpressWebJS, you can create web applications that are both fast and scalable. Bun.js can handle a large number of concurrent connections, and ExpressWebJS provides a variety of features that make it easy to develop and maintain scalable web applications.

For Bun installation, visit the installation page at Bun.sh

Once installation is complete, you need to install bun-types which is the Typescript definition for Bun's built-in APIs in your project directory as a dev dependency

 bun add -d bun-types

  
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Then include "bun-types" in the compilerOptions.types in your tsconfig.json:

{
  "compilerOptions": {
    "types": ["bun-types"]
  }
}

  
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Below is the suggested compilerOption to use in tsconfig.json

{
  "extends": "./node_modules/expresswebjs-preset-ts/tsconfig.json",
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "noUnusedLocals": true,
    "noPropertyAccessFromIndexSignature": true,
    "strictNullChecks": true,
    "useUnknownInCatchVariables": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    //Bun config
    "lib": ["ESNext"],
    "module": "esnext",
    "target": "esnext",
    "moduleResolution": "bundler",
    "moduleDetection": "force",
    "allowImportingTsExtensions": true,
    "noEmit": true,
    "composite": true,
    "strict": true,
    "downlevelIteration": true,
    "skipLibCheck": true,
    "jsx": "preserve",
    "allowJs": true,
    "types": [
      "bun-types" // add Bun global
    ]
  }
}

  
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Once that is done, you will need to update the script section in package.json file

  "scripts": {
    "start": "bun --hot run app.ts",
    "maker": "bun maker.ts"
  }

  
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Finally run bun install to install all dependencies.

 bun install

  
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Once you are done installing all dependencies, you can run bun start to start your application.

 bun start

  
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