The Node.js Environment

function Person(name) {

    this.name = name;

}

var peter = new Person("Peter");

var util = require("util");

console.log(util.inspect(peter));  // shown on stdout

peter;                             // shown as an execution result

Person.prototype.inspect = function inspect(depth) {

    return "Person named " + this.name;

};

peter;

Person.prototype._toHtml = function _toHtml() {

    var style = (

        "display:inline-block;" +

        "padding:0.25em;" +

        "background:#ccc;" +

        "border: 1px solid #888;" +

        "border-radius:0.25em;" +

        "box-shadow: 0.8em 0.4em 0.4em black;"

    );

    return (

        "<div style='" + style + "'>" +

        this.inspect() +

        "</div>"

    );

};

peter;

FILENAME="node-v${NODEJS_VERSION}-linux-x64.tar.xz"

FILEURL="https://nodejs.org/dist/v${NODEJS_VERSION}/${FILENAME}"

curl -O https://nodejs.org/dist/v${NODEJS_VERSION}/SHASUMS256.txt

wget --progress=dot:giga ${FILEURL}

grep $FILENAME SHASUMS256.txt | sha256sum -c -

cp $FILENAME /results/

FILENAME="yarn-v${YARN_VERSION}.tar.gz"

FILEURL="https://github.com/yarnpkg/yarn/releases/download/v${YARN_VERSION}/${FILENAME}"

wget -qO- https://dl.yarnpkg.com/debian/pubkey.gpg | gpg --import

wget --progress=dot:giga ${FILEURL} ${FILEURL}.asc

gpg --verify ${FILENAME}.asc

cp $FILENAME /results/

mkdir -p /opt/nodejs

cd /opt/nodejs

tar -Jxf node-v14.17.5-linux-x64.tar.xz

ln -s node-v${NODEJS_VERSION}-linux-x64/ default

cd /opt

tar -zxf yarn-v1.22.5.tar.gz

ln -s yarn-${YARN_VERSION} yarn

npm config set python /usr/bin/python3

npm config set unsafe-perm true # required because we are root

npm install -g ijavascript

ijsinstall --install=global

cd /usr/local/share/jupyter/kernels

mv javascript nodejs

cd nodejs

sed -i 's/"display_name":.*Javascript (Node.js)"/"display_name":"Node.js"/

s/"language":.*javascript"/"language":"nodejs"/' kernel.json

npm install -g plotly.js

npm install -g plotta.js

du -hsx /

npm version

node -v

jupyter kernelspec list

curl -sS https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip -o ngrok.zip

unzip /ngrok.zip

"use strict";

$$.async();

{

    let console = global.console;

    let $$ = global.$$;

    setTimeout(function() {

        console.log("Hello, world!");

        $$.sendResult("Bye!");

    }, 1000);

}