To alias msg1 as msg3 in the provided code import { msg2, msg1 } from './module2.js'; printMsg(msg1 + msg2);, which statement is correct?

The correct statement to alias msg1 as msg3 in the provided code is the one that utilizes the as keyword correctly in an import statement. By using import { msg2, msg1 as msg3 } from './module2.js';, the code imports msg2 as it is, while simultaneously importing msg1 and renaming it to msg3. This allows the code to reference the original value of msg1 using the new alias msg3.

When the code proceeds to execute printMsg(msg3 + msg2);, it effectively uses both msg3 (which is the original msg1) and msg2 to compute the desired output. This shows a clear understanding of how to import and alias variables in a module.

The other choices incorrectly implement either syntax or the logic needed for aliasing. For instance, option involving msg3 as msg1 misconstrues the relationship, while the one claiming import msg2, { msg1 } as msg3 utilizes an incorrect structure for importing individual named exports. Properly understanding the syntax of import statements and how aliasing works is key to selecting the correct option.