Why wrap `eval` like this `(0, eval)`?

Asked Oct 12 '17 at 10:40

Active Oct 12 '17 at 10:40

Viewed 67 times

I'm looking at the evaluate function in the systemjs sources:

function evaluate (loader, source, sourceMap, address, integrity, nonce, noWrap) {
    ...
    if (useVm)
      vm.runInThisContext(...)
    else
      (0, eval)(getSource(source, sourceMap, address, !noWrap));
    postExec();
  }

They use eval to evaluate JS code but why is the (0, eval) construction?

asked Oct 12 '17 at 10:40

Max Koretskyi

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https://stackoverflow.com/questions/21616264/what-does-0-eval-do – UchihaItachi Oct 12 '17 at 10:43
tldr : indirect vs direct eval calls are guaranteed to execute in global rather than local scope. – Fraser Oct 12 '17 at 10:45

Why wrap `eval` like this `(0, eval)`?

0 Answers0