A guide on utilizing promises generated by an external npm package

Question

A guide on utilizing promises generated by an external npm package

import sharp from 'sharp';
import path from 'path';

const imageProcessing = async (filename: string) => {
  return 
    sharp(path.join(__dirname, '../images', filename)).toFile(
    path.join(__dirname, '../src/cache', filename))
    
  
};

export default imageProcessing;

Utilizing the sharp npm module for file editing. Upon attempting to use the returned promise, the value is showing as undefined. It seems like there may be an issue with how I am handling and returning the promise.

imageProcessing(b).then(result => {
   console.log(result);

typescript promise

Answer 1

Answer №1

Seems like you're almost there, but your CSS is targeting the element's id while your JavaScript refers to a class.

You could update your CSS to target a class instead;

.para1{
    background-color:orange;
}

Alternatively, you can modify your JavaScript to refer to an id attribute;

para.id = "para1";

Answer 2

Seems like you're almost there, but your CSS is targeting the element's id while your JavaScript refers to a class.

You could update your CSS to target a class instead;

.para1{
    background-color:orange;
}

Alternatively, you can modify your JavaScript to refer to an id attribute;

para.id = "para1";

Answer 3

Answer №2

To apply inline CSS, you can use para.style = "color: red";.

Another option is to insert your CSS into the <style> tag like this:

document.querySelector('style').innerHTML += `
#para1 {
    padding: 20px;
}`;

For example:

var para = document.createElement("div");
para.innerHTML = 'Hello';
para.setAttribute("id", "para1");
para.style = "color: red";
var element = document.getElementById("one");
document.querySelector('style').innerHTML += `
#para1 {
  padding: 20px;
  background-color: orange;
}`;
console.log(document.querySelector('style'));
element.appendChild(para);

<style>
  body {
    background-color: skyblue;
  }

</style>
<div id="one"></div>

Answer 4

To apply inline CSS, you can use para.style = "color: red";.

Another option is to insert your CSS into the <style> tag like this:

document.querySelector('style').innerHTML += `
#para1 {
    padding: 20px;
}`;

For example:

var para = document.createElement("div");
para.innerHTML = 'Hello';
para.setAttribute("id", "para1");
para.style = "color: red";
var element = document.getElementById("one");
document.querySelector('style').innerHTML += `
#para1 {
  padding: 20px;
  background-color: orange;
}`;
console.log(document.querySelector('style'));
element.appendChild(para);

<style>
  body {
    background-color: skyblue;
  }

</style>
<div id="one"></div>

Answer 5

Answer №3

  I find this website to be extremely helpful 
[tabnine][1]

 image.toBuffer(function(err, img) {
            if ( err ) {
              data.code = 'error-processing-image';
              data.reason = err;
              return reject( data );
            }
    
            data.code = 'processed-image';
            data.obj.Body = img;
            if ( typeof img === 'Buffer' ) {
              data.obj.ContentLength = Buffer.byteLength( img );
            }
            return resolve( data );
          });

Answer 6

  I find this website to be extremely helpful 
[tabnine][1]

 image.toBuffer(function(err, img) {
            if ( err ) {
              data.code = 'error-processing-image';
              data.reason = err;
              return reject( data );
            }
    
            data.code = 'processed-image';
            data.obj.Body = img;
            if ( typeof img === 'Buffer' ) {
              data.obj.ContentLength = Buffer.byteLength( img );
            }
            return resolve( data );
          });

A guide on utilizing promises generated by an external npm package

Answer №1

Answer №2

Answer №3

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