create canvas 10x165mm black in javascript

index.tsx
// Create a canvas element
const canvas = document.createElement('canvas');

// Define the canvas width and height in pixels
canvas.width = 377.95; // This converts 10mm into pixels assuming 96dpi
canvas.height = 58.27; // This converts 165mm into pixels assuming 96dpi

// Get the canvas context and set it to 2d
const context = canvas.getContext('2d');

// Apply black color to the canvas
context.fillStyle = 'black';
context.fillRect(0, 0, canvas.width, canvas.height);

// Add the canvas element to the DOM
document.body.appendChild(canvas);
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