Or the repo with the demos: https://github.com/HugoDF/parcel-gh-pages-deploy and see https://example.codewithhugo.com/parcel-gh-pages-deploy/ .

Full example of a repo deployed like this: https://github.com/HugoDF/js-graphql-client-example , and see https://example.codewithhugo.com/js-graphql-client-example/ .

Here’s how to use these two tools together to deploy a JavaScript application.

Parcel allows us to bundle frontend applications with no configuration and GitHub pages affords us a way to deploy them for free.

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Setting up parcel 📦

npm install --``save-dev parcel

Say you have an index.html and client.js in your root: index.html :

<!doctype html> < html class = "no-js" lang = "en" > < head > < meta charset = "utf-8" > < meta http-equiv = "x-ua-compatible" content = "ie=edge" > < title > Your site title </ title > < meta name = "description" content = "Your site meta description" > < meta name = "viewport" content = "width=device-width, initial-scale=1, shrink-to-fit=no" > </ head > < body > < div id = "app" > < script src = "./client.js" ></ script > </ body > </ html >

client.js :

const $app = document . querySelector ( '#app' ); $app . innerText = 'Hello world' ;

Granted you don’t need to bundle this, but let’s say we do.

With npm 5+ you can run: npx parcel index.html (on old npm, ./node_modules/.bin/parcel index.html ).

Go to http://localhost:1234 or run the command with --open option ( npx parcel index.html --open ), you should see the following:

Note the ./client.js path that is relative to where the index.html is.

React and Vue single file components etc also work with simple .babelrc include and npm install of respectively babel-preset-react or babel-preset-vue .

We can put the script in package.json :

{ "scripts" : { "start" : "parcel index.html" }, "devDependencies" : { "parcel" : "^1.9.7" } }

And run it with npm start which will do the same as we did with npx earlier.

Deploying for free 💸

npm install --save-dev gh-pages

In package.json : If you’re building a repo that is not USERNAME.github.io :

{ "scripts" : { "start" : "parcel index.html" , "predeploy" : "rm -rf dist && parcel build index.html --public-url YOUR_REPO_NAME" , "deploy" : "gh-pages -d dist" }, "devDependencies" : { "gh-pages" : "^1.2.0" , "parcel" : "^1.9.7" } }

For our example that means:

{ "name" : "parcel-gh-pages-deploy" , "description" : "Deploy a parcel app to GitHub pages" , "scripts" : { "start" : "parcel index.html" , "predeploy" : "rm -rf dist && parcel build index.html --public--url /parcel-gh-pages-deploy" , "deploy" : "gh-pages -d dist" }, "devDependencies" : { "gh-pages" : "^1.2.0" , "parcel" : "^1.9.7" } }

If you are building USERNAME.github.io , use the following "``predeploy``" instead:

"predeploy" : "rm -rf dist && parcel build index.html" ,

❤ GitHub Pages and Parcel.

For any questions let me know on Twitter @hugo__df.