code formatting - Dangerous implications of Allman style in JavaScript

Question

I cannot remember where, but recently I passed a comment where the user told that 1TBS is more preferred than Allman in JavaScript and said Allman has dangerous implications in JavaScript.

Was it a valid statement? If so, why?

Answer 1

return cannot have LineTerminator after it so:

return
{


};

is treated as return; (return undefined) instead of return {}; (return an object)

See the rules for Automatic Semicolon Insertion (ASI) for more.