interface Options {
	/**
	Minimum range.
	*/
	readonly minimum?: number;

	/**
	Maximum range.
	*/
	readonly maximum?: number;

	/**
	Style for the sparklines.
	*/
	readonly style?: 'fire';
}

/**
Generate sparklines `▁▂▃▅▂▇`.

@param numbers - The numbers to create the sparkline from.

@example
```
import sparkly from 'sparkly';

sparkly([0, 3, 5, 8, 4, 3, 4, 10]);
//=> '▁▃▄▇▄▃▄█'

// Specifying anything other than finite numbers will cause holes
sparkly([0, 3, 5, '', 4, 3, 4, 10]);
//=> '▁▃▄ ▄▃▄█'

// Specifying an object with minimum and maximum options will change the sparkline range
sparkly([1, 2, 3, 4, 5], {minimum: 0, maximum: 10});
//=> '▁▂▃▄▄'
```
*/
export default function sparkly(
	numbers: ReadonlyArray<number | ''>,
	options?: Options
): string;