Updated Version 1.0.3

Author: Ansari1120

README.md

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+this is the Source code of Node js and Typescript Based Calculator Runs on the Command line Interface , its package Also published at NPM Marketplace. to run calculator do :
+
+1) npm i project-04-cli-based-calculator-node-and-typescript 
+
+2) npx ahmedcacli
+
+3) initialized typescript enviroment through npx tsc -init
+
+4) intialized node js enviroment npm init -yes
+
+5) npm i chalk 
+
+6) npm i chalk-animation 
+
+7) npm i inquirer
+
+8) npm i nanospinner
+
+9) npm install typescript --save-dev
+
+10) npm i -g typescript 
+
+11) npx tsc --init
+
+12) npm i ts-node-dev
+
+13) npm install nodemon --save-dev
+
+14) npm install @types/node --save-dev
+
+15)Add .js file with this at top : #! /usr/bin/env node
+
+16)setup Json file(example) :
+
+"bin": { "multiply": "bin/index.js" },
+
+17)Test package locally(for example :
+
+npx multiply
+
+18)Add Dependencies and import it to your main file :
+
+npm i prompt-sync
+
+19)create or login your npm account
+
+npm login
+
+20)publish your package
+
+21) npm publish
+
+22) added calculator basic opetaions features - , + , * , /

lib/index.js

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+#! /usr/bin/env node
+import chalk from "chalk";
+import inquirer from "inquirer";
+import chalkAnimation from "chalk-animation";
+import { createSpinner } from "nanospinner";
+let playerName;
+const sleep = (ms = 2000) => new Promise((r) => setTimeout(r, ms));
+//Welcome Screen
+const welcome = async () => {
+    const rainbowTitle = chalkAnimation.rainbow(`This is the simple Calculator?
+        Developed by Ahmed Ali Ansari \n`);
+    await sleep();
+    rainbowTitle.stop();
+};
+// User Name Input
+const askName = async () => {
+    const answers = await inquirer.prompt({
+        name: "user_name",
+        type: "input",
+        message: "What is your name? ",
+        default() {
+            return "User";
+        },
+    });
+    playerName = answers.user_name;
+    console.log(`Hey There ! ${playerName}`);
+};
+let calculator = {
+    add(number1, number2) {
+        return number1 + number2;
+    },
+    sub(number1, number2) {
+        return number1 - number2;
+    },
+    division: (number1, number2) => number1 / number2,
+    Multiplication: (number1, number2) => number1 * number2,
+};
+console.clear();
+await welcome();
+await askName();
+let want_to_Continue;
+do {
+    //Input Option and numbers from user
+    const question = async () => {
+        const operators = await inquirer.prompt([
+            {
+                name: "available_operations",
+                type: "list",
+                message: "Please use Arrow key to Select your option!\n",
+                choices: ["Addition", "Substraction", "Division", "Multiplication"],
+            },
+            {
+                name: "num1",
+                type: "number",
+                message: "enter first number : ",
+                default() {
+                    return console.error();
+                },
+            },
+            {
+                name: "num2",
+                type: "number",
+                message: "enter second number : ",
+                default() {
+                    return console.error();
+                },
+            },
+        ]);
+        // await question();
+        return handleAnswer(operators.available_operations, operators.num1, operators.num2);
+    };
+    //making a choice function
+    const handleAnswer = async (choose_operations, number1, number2) => {
+        let answer;
+        const spinner = createSpinner("Calculating...").start();
+        await sleep();
+        switch (choose_operations) {
+            case "Addition":
+                answer = calculator.add(number1, number2);
+                spinner.success({
+                    text: `\nThe Result of Addition is : ${chalk.bold.bgBlueBright(answer)}`,
+                });
+                break;
+            case "Substraction":
+                answer = calculator.sub(number1, number2);
+                spinner.success({
+                    text: `\nThe Result of Substraction is : ${chalk.bold.bgBlueBright(answer)}`,
+                });
+                break;
+            case "Division":
+                answer = calculator.division(number1, number2);
+                spinner.success({
+                    text: `\nThe Result of Division is : ${chalk.bold.bgBlueBright(answer)}`,
+                });
+                break;
+            case "Multiplication":
+                answer = calculator.Multiplication(number1, number2);
+                spinner.success({
+                    text: `\nThe Result of Multiplication is : ${chalk.bold.bgBlueBright(answer)}`,
+                });
+                break;
+            default:
+                console.log("Invalid Choice !");
+        }
+    };
+    const want_to_calculate_more = async () => {
+        const choice = await inquirer.prompt({
+            name: "want_to_calculate_more",
+            type: "confirm",
+            message: "Do you want to continue for more operations ? ",
+        });
+        want_to_Continue = choice.want_to_calculate_more;
+    };
+    await question();
+    await want_to_calculate_more();
+    console.clear();
+} while (want_to_Continue == true);