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node_modules/rich-text/lib/is.js

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+module.exports = {
+  equal: function (a, b) {
+    if (a === b) return true;
+    if (a == null && b == null) return true;
+    if (a == null || b == null) return false;
+    if (Object.keys(a).length != Object.keys(b).length) return false;
+    for(var key in a) {
+      // Only compare one level deep
+      if (a[key] !== b[key]) return false;
+    }
+    return true;
+  },
+
+  array: function (value) {
+    return Array.isArray(value);
+  },
+
+  number: function (value) {
+    if (typeof value === 'number') return true;
+    if (typeof value === 'object' && Object.prototype.toString.call(value) === '[object Number]') return true;
+    return false;
+  },
+
+  object: function (value) {
+    if (!value) return false;
+    return (typeof value === 'function' || typeof value === 'object');
+  },
+
+  string: function (value) {
+    if (typeof value === 'string') return true;
+    if (typeof value === 'object' && Object.prototype.toString.call(value) === '[object String]') return true;
+    return false;
+  }
+};