export const EPSILON = 1;
export const MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
export const MIN_SAFE_INTEGER = -MAX_SAFE_INTEGER;

export function is_nan(value: any): boolean {
	return typeof value === 'number' && isNaN(value);
}

export function is_finite(value: any): boolean {
	return typeof value === 'number' && isFinite(value);
}

export function is_integer(value: any): boolean {
	return is_finite(value) && Math.floor(value) === value;
}

export function is_safe_integer(value: any): boolean {
	return is_integer(value) && Math.abs(value) <= MAX_SAFE_INTEGER;
}