imageResizer.js

class ImageResizer {
  constructor(minWidth, minHeight) {
    this.minWidth = minWidth;
    this.minHeight = minHeight;

    this.imageDimension = [1000, 500];
    this.imageProportion = this.imageDimension[0] / this.imageDimension[1];
  }

  resize() {
    // Generate image proportion

    // If image width is greater than minWidth
    //  calculate new dimensions based on width
    // If image height is smaller than minHeight
    //  calculate new dimensions based on height

    // Return new height

    let newDimensions = [];

    if (this.imageDimension[0] > this.minWidth) {
      newDimensions[0] = this.minWidth;
      newDimensions[1] = this.minHeight / this.imageProportion;
    }

    if (newDimensions[1] < this.minHeight) {
      newDimensions[1] = this.minHeight;
      newDimensions[0] = this.minWidth / this.imageProportion;
      console.log("woops!");
    }

    return newDimensions;
  }
}

const imageResizer = new ImageResizer(500, 500);

console.log(imageResizer);
console.log(imageResizer.resize());