{"componentChunkName":"component---src-templates-tag-js","path":"/tags/hello-world/","result":{"data":{"site":{"siteMetadata":{"title":"LoginRadius Blog"}},"allMarkdownRemark":{"totalCount":1,"edges":[{"node":{"fields":{"slug":"/engineering/hello-world-deno/"},"html":"

Hello, Deno

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Deno is a new platform for writing applications using JavaScript and TypeScript. It is based on the V8 JavaScript engine and the Rust.

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Deno’s lowest level binding layer to the system is tied to promises (called ops). Deno is secure by default, provides first-class TypeScript support, has built-in utilities like a dependency inspector, and supports third-party modules such as lodash .

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Btw, this is the best damn geeky one-liner code to explain what is Deno. Totally cool.

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\"alt_text\"

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Installation

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Deno works on macOS, Linux, and Windows. Deno is a single binary executable and it has no external dependencies.

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See all installation.

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Install Deno on Windows 10/8/7

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Launch Windows PowerShell and run the following command to install Deno on Windows 10/8/7

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iwr https://deno.land/x/install/install.ps1 -useb | iex
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Install Deno on Linux and macOS

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Launch terminal and run the following command to install Deno on Linux and Mac

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curl -fsSL https://deno.land/x/install/install.sh | sh
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Open a new terminal and run deno. You should get a > prompt. Type exit.

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After installing deno on your system we just need to create a simple Hello World program by using the following steps :

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Step 1. Create a Folder as per your project name by using command prompt

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mkdir HelloWorldDeno
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Step 2. Create a typeScript file and name it index.ts.

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Step 3. Add the following code in index.ts.

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const helloWorld = (name: string = "world") => {\n  console.log(`Hello ${name}!!`);\n}\n\nhelloWorld();\n\nhelloWorld("Friend");
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Step 4. Run the following project by using the following command

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deno run index.ts
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You can check the result here

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\"alt_text\"

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Yupppp it works this is your first Deno program !!

\n","frontmatter":{"date":"June 02, 2020","updated_date":null,"title":"Hello world with Deno","tags":["Deno","HelloWorld","NodeJs"],"coverImage":{"childImageSharp":{"fluid":{"aspectRatio":1.7699115044247788,"src":"/static/70351d960fd94ea6641dc19419a97bbc/58556/deno.webp","srcSet":"/static/70351d960fd94ea6641dc19419a97bbc/61e93/deno.webp 200w,\n/static/70351d960fd94ea6641dc19419a97bbc/1f5c5/deno.webp 400w,\n/static/70351d960fd94ea6641dc19419a97bbc/58556/deno.webp 800w,\n/static/70351d960fd94ea6641dc19419a97bbc/99238/deno.webp 1200w,\n/static/70351d960fd94ea6641dc19419a97bbc/135cd/deno.webp 1280w","sizes":"(max-width: 800px) 100vw, 800px"}}},"author":{"id":"Ashish Sharma","github":"ashish8947","avatar":null}}}}]}},"pageContext":{"tag":"HelloWorld"}},"staticQueryHashes":["1171199041","1384082988","2100481360","23180105","528864852"]}