From 58464f82831dc7588ab44f2a165009e01dc00767 Mon Sep 17 00:00:00 2001
From: roll <eskarev@gmail.com>
Date: Thu, 30 Apr 2020 10:44:15 +0300
Subject: [PATCH] Added support for infinite number

---
 src/types/number.js  | 13 ++++++++-----
 test/types/number.js |  3 +++
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/types/number.js b/src/types/number.js
index 4caaae1..1258b2d 100644
--- a/src/types/number.js
+++ b/src/types/number.js
@@ -7,11 +7,14 @@ const { ERROR } = require('../config')
 // Module API
 
 function castNumber(format, value, options = {}) {
-  const decimalChar = options.decimalChar || _DEFAULT_DECIMAL_CHAR
-  const groupChar = options.groupChar || _DEFAULT_GROUP_CHAR
   if (!isNumber(value)) {
     if (!isString(value)) return ERROR
     if (!value.length) return ERROR
+    if (value === 'NaN') return NaN
+    if (value === 'INF') return Infinity
+    if (value === '-INF') return -Infinity
+    const decimalChar = options.decimalChar || _DEFAULT_DECIMAL_CHAR
+    const groupChar = options.groupChar || _DEFAULT_GROUP_CHAR
     value = value.replace(new RegExp('\\s', 'g'), '')
     value = value.replace(new RegExp(`[${decimalChar}]`, 'g'), '.')
     value = value.replace(new RegExp(`[${groupChar}]`, 'g'), '')
@@ -23,9 +26,9 @@ function castNumber(format, value, options = {}) {
     } catch (error) {
       return ERROR
     }
-  }
-  if (isNaN(value)) {
-    return ERROR
+    if (isNaN(value)) {
+      return ERROR
+    }
   }
   return value
 }
diff --git a/test/types/number.js b/test/types/number.js
index 34aef45..f9f20fa 100644
--- a/test/types/number.js
+++ b/test/types/number.js
@@ -12,6 +12,9 @@ const TESTS = [
   ['default', '1', 1],
   ['default', '10.00', 10],
   ['default', '10.50', 10.5],
+  ['default', 'NaN', NaN],
+  ['default', 'INF', Infinity],
+  ['default', '-INF', -Infinity],
   ['default', '100%', 100, { bareNumber: false }],
   ['default', '1000‰', 1000, { bareNumber: false }],
   ['default', '-1000', -1000],