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javascript/snippets/to-safe-integer.md

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+---
+title: Value to safe integer
+type: snippet
+tags: [math]
+cover: mask-quiet
+dateModified: 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.
+
+```js
+const toSafeInteger = num =>
+  Math.round(
+    Math.max(Math.min(num, Number.MAX_SAFE_INTEGER), Number.MIN_SAFE_INTEGER)
+  );
+```
+
+```js
+toSafeInteger('3.2'); // 3
+toSafeInteger(Infinity); // 9007199254740991
+```