File Pixelizer.ts has 289 lines of code (exceeds 250 allowed). Consider refactoring.

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/**
 * Pixelizer - convert an image to Pixel Art, with/out grayscale and based on a color palette.
 * @author José Moreira @ <https://github.com/giventofly/pixelit>
 * @author Michael Feher @ <https://github.com/PhearZero>
 **/

Function fillColor has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.

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export function fillColor(image: Color[][], color: Color, position: Position) {
  const targetColor = image[position.y][position.x];
  if (targetColor.hex === color.hex) return image;
  const stack: Position[] = [position];
  while (stack.length) {

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Function pixelate has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.

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    pixelate() {
        const tempCanvas = document.createElement("canvas");
 
        if(!this.drawfrom) throw new Error(DRAWFROM_NOT_DEFINED_MESSAGE)
        if(!this.drawto) throw new Error(DRAWTO_NOT_DEFINED_MESSAGE)

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Function resizeImage has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

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    resizeImage() {
        if(!this.drawto) throw new Error(DRAWTO_NOT_DEFINED_MESSAGE)
        if(!this.ctx) throw new Error(CONTEXT_NOT_DEFINED_MESSAGE)
 
        //var ctx = canvas.getContext("2d")

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