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Groups > comp.lang.javascript > #39743

Re: Exposing a module in the current scope

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Anton Shepelev wrote:

>    $.import("anton_test/util.xsjslib","util"); // import module
>    $.anton_test.util.log("Log from library."); // invoke a function
> 
> Is it somehow possible to have all the functions from `util'
> available in the current scope, so that I could invoke them
> by their names: log("Hello"), rather than, say,
> util.log("Hello"), 

(Again: No.)

But an alternative standard-compliant and backwards-compatible way is what 
has been called an IEFE (“immediately executed function expression”) or a 
simiilar term:

  $.import("anton_test/util.xsjslib","util"); // import module
  $.anton_test.util.log("Log from library."); // invoke a function

  (function (log) {
    /* … */
  }($.anton_test.util.log));

The same caveat applies above as for

  const log = $.anton_test.util.log;

which is why typically one writes

  (function (util) {
    util.log("Log from library.");
  }($.anton_test.util));

BTW, I would expect the module loader of such a module system to return, if 
successful, a reference to the module object such that – if synchronous 
execution cannot be avoided – the following code would be equivalent to the 
code above:

  const util = $.import("anton_test/util.xsjslib","util");
  util.log("Log from library.");

In asynchronous module loading, typically the module object is passed as 
argument to the callback:

  $.import("anton_test/util.xsjslib", function (util) {
    util.log("Log from library.");
  });

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PointedEars
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Exposing a module in the current scope Anton Shepelev <antonius@freeshell.de> - 2021-03-18 19:21 +0300
  Re: Exposing a module in the current scope Anton Shepelev <anton.txt@gmail.com> - 2021-03-18 23:57 +0300
    Re: Exposing a module in the current scope "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2021-03-18 18:45 -0700
      Re: Exposing a module in the current scope Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-03-19 18:11 +0300
        Re: Exposing a module in the current scope Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-03-19 19:08 +0300
          Re: Exposing a module in the current scope "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2021-03-19 10:51 -0700
            Re: Exposing a module in the current scope Anton Shepelev <anton.txt@gmail.com> - 2021-03-20 13:32 +0300
              Re: Exposing a module in the current scope "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2021-03-20 09:53 -0700
        Re: Exposing a module in the current scope "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2021-03-19 10:47 -0700
          Re: Exposing a module in the current scope Anton Shepelev <anton.txt@gmail.com> - 2021-03-20 13:51 +0300
            Re: Exposing a module in the current scope "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2021-03-20 09:59 -0700
              Re: Exposing a module in the current scope Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-03-24 20:43 +0300
          Re: Exposing a module in the current scope Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-03-22 21:14 +0100
            Re: Exposing a module in the current scope "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2021-03-22 16:00 -0700
              Re: Exposing a module in the current scope Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-03-23 01:11 +0100
              Re: Exposing a module in the current scope Anton Shepelev <anton.txt@gmail.com> - 2021-04-04 00:31 +0300
  Re: Exposing a module in the current scope "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2021-03-18 11:30 -0700
  Re: Exposing a module in the current scope Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-03-22 21:05 +0100
  Re: Exposing a module in the current scope Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-03-23 01:00 +0100
    Re: Exposing a module in the current scope Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-03-23 20:06 +0300
      Re: Exposing a module in the current scope Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2021-03-25 20:04 +0100
        Re: Exposing a module in the current scope John G Harris <niam@jghnorth.org.uk.invalid> - 2021-03-26 08:32 +0000
        Re: Exposing a module in the current scope John G Harris <niam@jghnorth.org.uk.invalid> - 2021-03-26 08:48 +0000
  Re: Exposing a module in the current scope Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-04-13 18:49 +0300

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