Pluralize words

app.js

import { promises as fs } from 'fs'
import pluralize from 'pluralize'
import express from 'express'
const app = express()

app.get("/", async (req, res) => {
    console.log("got a request for /")
    res.type('html')
    let fileContents = await fs.readFile("index.html")
    res.send(fileContents)
})

app.get("/style.css", async (req, res) => {
    console.log("got a request for style.css")
    res.type("css")
    let fileContent = await fs.readFile("style.css")
    res.send(fileContent)
})

app.get("/index.js", async (req, res) => {
    console.log("got a request for index.js")
    res.type("js")
    let fileContents = await fs.readFile("index.js")
    res.send(fileContents)
})

app.get("/favicon.ico", async (req, res) => {
    res.type("png")
    let fileContents = await fs.readFile("favicon.ico")
    res.send(fileContents)
})

app.get("/api/pluralize", (req, res) => {
    const inputWord = req.query.word
    const pluralWord = pluralize(inputWord)    
    res.type("txt")
    res.send(pluralWord)
})

app.listen(3000, () => {
    console.log("Example app listening at http://localhost:3000")
})

index.html

<html>
    <head>
        <link rel="stylesheet" href="style.css">
        <script src="index.js"></script>
    </head>
    <body>
        <h1>Pluralize Demo</h1>
        <input type="text" id="wordinput" />
        <button onclick="pluralizeWord()">Pluralize!</button>
        <br>
        <br>
        <div id="results"></div>
    </body>
</html>

index.js

async function pluralizeWord() {
    let inputWord = document.getElementById("wordinput").value
    let response = await fetch("api/pluralize?word=" + inputWord)
    let resultText = await response.text()

    document.getElementById("results").innerHTML = resultText
}

style.css

h1 {
    color: pink
}

body {
    background-color: lightyellow
}

button {
    background-color: lightcoral;
    color: white;
    border-color: skyblue;
}