Sigmund Schinner

Sigmund Schinner

1625303100

A Modern Next.js Tech Stack for Headless E-Commerce

Next.js is a great choice for building an e-commerce site — this part needs no explanation. But even once you’ve chosen to use Next.js, building an e-commerce website requires a number of other tools and libraries that might not be such obvious choices.

I recently built a Next.js e-commerce site, one which relies on ‘headless’ solutions for content and e-commerce functionality. The tools I chose to make this happen worked nicely, complementing the Next.js architecture, and so I wanted to share them.

  • Commerce.js for the ‘headless e-commerce’
  • Prismic for the ‘headless content’
  • Plausible for the simple analytics and insights

#nextjs

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Buddha Community

A Modern Next.js Tech Stack for Headless E-Commerce
JavaScript Daily

JavaScript Daily

1632537859

NBB: Ad-hoc CLJS Scripting on Node.js

Nbb

Not babashka. Node.js babashka!?

Ad-hoc CLJS scripting on Node.js.

Status

Experimental. Please report issues here.

Goals and features

Nbb's main goal is to make it easy to get started with ad hoc CLJS scripting on Node.js.

Additional goals and features are:

  • Fast startup without relying on a custom version of Node.js.
  • Small artifact (current size is around 1.2MB).
  • First class macros.
  • Support building small TUI apps using Reagent.
  • Complement babashka with libraries from the Node.js ecosystem.

Requirements

Nbb requires Node.js v12 or newer.

How does this tool work?

CLJS code is evaluated through SCI, the same interpreter that powers babashka. Because SCI works with advanced compilation, the bundle size, especially when combined with other dependencies, is smaller than what you get with self-hosted CLJS. That makes startup faster. The trade-off is that execution is less performant and that only a subset of CLJS is available (e.g. no deftype, yet).

Usage

Install nbb from NPM:

$ npm install nbb -g

Omit -g for a local install.

Try out an expression:

$ nbb -e '(+ 1 2 3)'
6

And then install some other NPM libraries to use in the script. E.g.:

$ npm install csv-parse shelljs zx

Create a script which uses the NPM libraries:

(ns script
  (:require ["csv-parse/lib/sync$default" :as csv-parse]
            ["fs" :as fs]
            ["path" :as path]
            ["shelljs$default" :as sh]
            ["term-size$default" :as term-size]
            ["zx$default" :as zx]
            ["zx$fs" :as zxfs]
            [nbb.core :refer [*file*]]))

(prn (path/resolve "."))

(prn (term-size))

(println (count (str (fs/readFileSync *file*))))

(prn (sh/ls "."))

(prn (csv-parse "foo,bar"))

(prn (zxfs/existsSync *file*))

(zx/$ #js ["ls"])

Call the script:

$ nbb script.cljs
"/private/tmp/test-script"
#js {:columns 216, :rows 47}
510
#js ["node_modules" "package-lock.json" "package.json" "script.cljs"]
#js [#js ["foo" "bar"]]
true
$ ls
node_modules
package-lock.json
package.json
script.cljs

Macros

Nbb has first class support for macros: you can define them right inside your .cljs file, like you are used to from JVM Clojure. Consider the plet macro to make working with promises more palatable:

(defmacro plet
  [bindings & body]
  (let [binding-pairs (reverse (partition 2 bindings))
        body (cons 'do body)]
    (reduce (fn [body [sym expr]]
              (let [expr (list '.resolve 'js/Promise expr)]
                (list '.then expr (list 'clojure.core/fn (vector sym)
                                        body))))
            body
            binding-pairs)))

Using this macro we can look async code more like sync code. Consider this puppeteer example:

(-> (.launch puppeteer)
      (.then (fn [browser]
               (-> (.newPage browser)
                   (.then (fn [page]
                            (-> (.goto page "https://clojure.org")
                                (.then #(.screenshot page #js{:path "screenshot.png"}))
                                (.catch #(js/console.log %))
                                (.then #(.close browser)))))))))

Using plet this becomes:

(plet [browser (.launch puppeteer)
       page (.newPage browser)
       _ (.goto page "https://clojure.org")
       _ (-> (.screenshot page #js{:path "screenshot.png"})
             (.catch #(js/console.log %)))]
      (.close browser))

See the puppeteer example for the full code.

Since v0.0.36, nbb includes promesa which is a library to deal with promises. The above plet macro is similar to promesa.core/let.

Startup time

$ time nbb -e '(+ 1 2 3)'
6
nbb -e '(+ 1 2 3)'   0.17s  user 0.02s system 109% cpu 0.168 total

The baseline startup time for a script is about 170ms seconds on my laptop. When invoked via npx this adds another 300ms or so, so for faster startup, either use a globally installed nbb or use $(npm bin)/nbb script.cljs to bypass npx.

Dependencies

NPM dependencies

Nbb does not depend on any NPM dependencies. All NPM libraries loaded by a script are resolved relative to that script. When using the Reagent module, React is resolved in the same way as any other NPM library.

Classpath

To load .cljs files from local paths or dependencies, you can use the --classpath argument. The current dir is added to the classpath automatically. So if there is a file foo/bar.cljs relative to your current dir, then you can load it via (:require [foo.bar :as fb]). Note that nbb uses the same naming conventions for namespaces and directories as other Clojure tools: foo-bar in the namespace name becomes foo_bar in the directory name.

To load dependencies from the Clojure ecosystem, you can use the Clojure CLI or babashka to download them and produce a classpath:

$ classpath="$(clojure -A:nbb -Spath -Sdeps '{:aliases {:nbb {:replace-deps {com.github.seancorfield/honeysql {:git/tag "v2.0.0-rc5" :git/sha "01c3a55"}}}}}')"

and then feed it to the --classpath argument:

$ nbb --classpath "$classpath" -e "(require '[honey.sql :as sql]) (sql/format {:select :foo :from :bar :where [:= :baz 2]})"
["SELECT foo FROM bar WHERE baz = ?" 2]

Currently nbb only reads from directories, not jar files, so you are encouraged to use git libs. Support for .jar files will be added later.

Current file

The name of the file that is currently being executed is available via nbb.core/*file* or on the metadata of vars:

(ns foo
  (:require [nbb.core :refer [*file*]]))

(prn *file*) ;; "/private/tmp/foo.cljs"

(defn f [])
(prn (:file (meta #'f))) ;; "/private/tmp/foo.cljs"

Reagent

Nbb includes reagent.core which will be lazily loaded when required. You can use this together with ink to create a TUI application:

$ npm install ink

ink-demo.cljs:

(ns ink-demo
  (:require ["ink" :refer [render Text]]
            [reagent.core :as r]))

(defonce state (r/atom 0))

(doseq [n (range 1 11)]
  (js/setTimeout #(swap! state inc) (* n 500)))

(defn hello []
  [:> Text {:color "green"} "Hello, world! " @state])

(render (r/as-element [hello]))

Promesa

Working with callbacks and promises can become tedious. Since nbb v0.0.36 the promesa.core namespace is included with the let and do! macros. An example:

(ns prom
  (:require [promesa.core :as p]))

(defn sleep [ms]
  (js/Promise.
   (fn [resolve _]
     (js/setTimeout resolve ms))))

(defn do-stuff
  []
  (p/do!
   (println "Doing stuff which takes a while")
   (sleep 1000)
   1))

(p/let [a (do-stuff)
        b (inc a)
        c (do-stuff)
        d (+ b c)]
  (prn d))

$ nbb prom.cljs
Doing stuff which takes a while
Doing stuff which takes a while
3

Also see API docs.

Js-interop

Since nbb v0.0.75 applied-science/js-interop is available:

(ns example
  (:require [applied-science.js-interop :as j]))

(def o (j/lit {:a 1 :b 2 :c {:d 1}}))

(prn (j/select-keys o [:a :b])) ;; #js {:a 1, :b 2}
(prn (j/get-in o [:c :d])) ;; 1

Most of this library is supported in nbb, except the following:

  • destructuring using :syms
  • property access using .-x notation. In nbb, you must use keywords.

See the example of what is currently supported.

Examples

See the examples directory for small examples.

Also check out these projects built with nbb:

API

See API documentation.

Migrating to shadow-cljs

See this gist on how to convert an nbb script or project to shadow-cljs.

Build

Prequisites:

  • babashka >= 0.4.0
  • Clojure CLI >= 1.10.3.933
  • Node.js 16.5.0 (lower version may work, but this is the one I used to build)

To build:

  • Clone and cd into this repo
  • bb release

Run bb tasks for more project-related tasks.

Download Details:
Author: borkdude
Download Link: Download The Source Code
Official Website: https://github.com/borkdude/nbb 
License: EPL-1.0

#node #javascript

AppClues Infotech

AppClues Infotech

1623130935

Top E-Commerce Mobile App Developers in USA

Looking to develop an E-Commerce app for your business or start-up? We at, AppClues Infotech have the best team of E-Commerce mobile app developers in USA for iOS & Android users. Get in touch with our E-Commerce experts to take your E-Commerce business to the next level.

E-Commerce App Development Services
• Ecommerce Technology Consulting
• Custom E-Commerce App Development
• E-Commerce Wallet Development
• E-Commerce Plugin Integration
• E-Commerce App UI/UX Designing
• B2B & B2C E-Commerce App Solutions

For more info:
Website: https://www.appcluesinfotech.com/
Email: info@appcluesinfotech.com
Call: +1-978-309-9910

#e-commerce app development company in usa #hire e-commerce app developers in usa #custom e-commerce app development #create an e-commerce app #cost to build e-commerce app #m-commerce app development company in usa

AppClues Infotech

AppClues Infotech

1620367822

Top E-Commerce App Development Company in USA

Looking to develop an eCommerce app for your business? We at, AppClues Infotech provide the best eCommerce mobile app development services for Android and iOS users. Get in touch with our eCommerce experts to take your e-commerce business to the next level.

For more info:
Website: https://www.appcluesinfotech.com/
Email: info@appcluesinfotech.com
Call: +1-978-309-9910

#e-commerce app development company in usa #hire e-commerce app developers in usa #custom e-commerce app development #create an e-commerce app #cost to build e-commerce app #m-commerce app development company in usa

AppClues Infotech

AppClues Infotech

1611831324

Custom E-Commerce App Development Services Provider Company in USA

Do you want to make a custom E-Commerce mobile app for your business? We at AppClues Infotech is the best E-Commerce mobile app development company in the USA that provides a complete E-Commerce app solution with the current trending technologies & features at an affordable cost.

For more info:
Website: https://www.appcluesinfotech.com/
Email: info@appcluesinfotech.com
Call: +1-978-309-9910

#e-commerce app development #mobile commerce app development #e-ccommerce app development company usa #e-commerce development services usa #custom e-commerce app development #e-commerce app development services

Fredy Larson

Fredy Larson

1593144300

How to convert your e-commerce into a mobile application?

There comes a lot of benefits that bring more advantages to your business. Some of the top advantages of converting your online eCommerce store into a mobile App are given as follows.

  1. Customer engagement
  2. Personalized user experience
  3. Cost-effective marketing
  4. Enhanced conversion
  5. Broader audience
  6. Fast loading and high performance

Before building a customer mCommerce mobile application for your business, you will need to know the important steps or decisions that you need to make on the process. From choosing the right innovative technology to finding the right mobile development company, here is everything you need to know about mCommerce development.

Choosing the right platform and technology for your business application

The success of the business depends largely on the user experience that your application delivers to your customers. It is no secret that mobile applications provide you with the best features and opportunities than anything else. You can provide the best user experience that is exclusively customized to the needs of your users.

If you want to attain the most out of the benefits of mobile application, it is crucial to choose the right technology for your mobile application development. There are two well-known platforms that are android and iOS When you are building a mobile application, you will have to develop 2 native applications that cater to both platforms separately or you can invest in a cross-platform mobile application.

Picking out the perfect eCommerce technology and tools

For a start-up, you can better go for cross-platform applications that are affordable, helps you in saving time and money. Because building native applications are a time-consuming process and also you will need to spend on two different mobile applications for two different platforms. Building native applications can bring you extensive user experience and features but it is expensive at the same time. There is another option that comes in the line. The Progressive Web Application is the technology that can bring all the benefits of mobile applications and also works in a browser as a web application.

You can better talk to our technology solutions experts to find the best solution for your business application.

#enterprise application #advantages of mobile commerce #different players in m commerce #features of m commerce #m commerce examples #m commerce wikipedia #m-commerce development #mobile commerce applications #mobile commerce statistics 2019 #mobile commerce trends