• Detect incorrect order of operations in Object.assign, MS Edge bug
• Detect usage of ToLength in Array#{ filter, map }, FF48-49 and MS Edge 14- issues
• Detect incorrect MS Edge 17-18 Reflect.set which allows setting the property to object with non-writable property on the prototype
• Fixed inspectSource helper with multiple core-js copies and some related features like some edge cases of Promise feature detection