1 /* 2 * This is the test JavaScript program used in jjs-es6Test.sh 3 */ 4 5 const X = 4; 6 try { 7 X = 55; 8 throw new Error("should have thrown TypeError"); 9 } catch (e) { 10 if (! (e instanceof TypeError)) { 11 throw new Error("TypeError expected, got " + e); 12 } 13 }