feat: add Object.isFiniteNumber util

medikoo · Aug 11, 2017 · fe5b55a · fe5b55a
1 parent 299bbb9
commit fe5b55a
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Showing 3 changed files with 23 additions and 0 deletions.
diff --git a/object/index.js b/object/index.js
@@ -27,6 +27,7 @@ module.exports = {
 	isCopy: require("./is-copy"),
 	isCopyDeep: require("./is-copy-deep"),
 	isEmpty: require("./is-empty"),
+	isFiniteNumber: require("./is-finite-number"),
 	isNumberValue: require("./is-number-value"),
 	isObject: require("./is-object"),
 	isPlainObject: require("./is-plain-object"),

diff --git a/object/is-finite-number.js b/object/is-finite-number.js
@@ -0,0 +1,7 @@
+"use strict";
+
+var isNumber = require("./is-number-value");
+
+module.exports = function (value) {
+	return isNumber(value) && isFinite(value);
+};
diff --git a/test/object/is-finite-number.js b/test/object/is-finite-number.js
@@ -0,0 +1,15 @@
+"use strict";
+
+module.exports = function (t, a) {
+	a(t(undefined), false, "Undefined");
+	a(t(null), false, "Null");
+	a(t(0), true, "Zero");
+	a(t(NaN), false, "NaN");
+	a(t(Infinity), false, "Infinity");
+	a(t(12), true, "Number");
+	a(t(false), true, "Boolean");
+	a(t(new Date()), true, "Date");
+	a(t(new Number(2)), true, "Number object");
+	a(t("asdfaf"), false, "String");
+	a(t(""), true, "Empty String");
+};