There's an error in generateRandomColor: if math random is below 1/0x100000, the value may not have 6 characters.
// wrong: const generateRandomHexColor = () => `#${Math.floor(Math.random() * 0xffffff).toString(16)}`; // corrected: const generateRandomHexColor = () => `#${Math.floor(0x1000000 + Math.random() * 0xffffff).toString(16).slice(1)}`;
Why not just padStart?
padStart
String.prototype.padStart is pretty recent and not supported by older browsers.
String.prototype.padStart
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There's an error in generateRandomColor: if math random is below 1/0x100000, the value may not have 6 characters.
Why not just
padStart?String.prototype.padStartis pretty recent and not supported by older browsers.