Function call prefixed by a number

Asked Dec 20 '19 at 14:18

Active Dec 20 '19 at 14:18

Viewed 25 times

I was going through the source of Jest and I stumbled upon this piece of code:

    const pass = (0, _jasmineUtils.equals)(received, expected, [
      _utils.iterableEquality
    ]);

What is the zero doing in front of this function call? Can this value somehow be accessed in the _jasmineUtils.equals function? If so, how? I tried it out myself in a little script, and it does not show up in arguments.

What kind of Javascript function calling mechanism is used here? Does it have a name?

asked Dec 20 '19 at 14:18

Stobbej

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Also see here for why it can be useful: https://stackoverflow.com/questions/59124936/why-does-any-javascript-code-want-to-cut-the-binding – Nick Parsons Dec 20 '19 at 14:23
1

nice tip @NickParsons, appreciated! – Stobbej Dec 20 '19 at 14:27

Function call prefixed by a number

0 Answers0