Implemented suggesting improvements

test/isAnagram/isAnagram.js

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+const isAnagram = (str1, str2) => {
+const normalize = str => str.toLowerCase().replace(/[^a-z0-9]/gi, '').split('').sort().join('');
+return normalize(str1) === normalize(str2);
+}
+module.exports = isAnagram;

test/isAnagram/isAnagram.test.js

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+const test = require('tape');
+const isAnagram = require('./isAnagram.js');
+
+test('Testing isAnagram', (t) => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  t.true(typeof isAnagram === 'function', 'isAnagram is a Function');
+  t.true(isAnagram('iceman', 'cinema'), 'Checks valid anagram');
+  t.true(isAnagram('rail safety', 'fairy tales'), 'Works with spaces');
+  t.true(isAnagram('roast beef', 'eat for BSE'), 'Ignores case');
+  t.true(isAnagram('Regera Dowdy', 'E. G. Deadworry'), 'Ignores special characters');
+  //t.deepEqual(isAnagram(args..), 'Expected');
+  //t.equal(isAnagram(args..), 'Expected');
+  //t.false(isAnagram(args..), 'Expected');
+  //t.throws(isAnagram(args..), 'Expected');
+  t.end();
+});