30-seconds-of-code/javascript/snippets/to-safe-integer.md

title, type, tags, cover, dateModified

title	type	tags	cover	dateModified
Value to safe integer	snippet	math	mask-quiet	2020-10-22T20:24:44+03:00

Converts a value to a safe integer.

• Use Math.max() and Math.min() to find the closest safe value.
• Use Math.round() to convert to an integer.

const toSafeInteger = num =>
  Math.round(
    Math.max(Math.min(num, Number.MAX_SAFE_INTEGER), Number.MIN_SAFE_INTEGER)
  );

toSafeInteger('3.2'); // 3
toSafeInteger(Infinity); // 9007199254740991