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JavaScript Gulp Basics Gulp your JavaScript Workflow Using Third Party Gulp Libraries

Posted by Tony Brackins
Tony Brackins
28,766 Points

var with require('gulp') but not with require ('gulp-concat')

Wondering why in this video we're using var with gulp, but not with concat.

1 Answer

Zac Mackey
Zac Mackey
11,392 Points
Zac Mackey
Zac Mackey
11,392 Points

Hi Tony!

The reason why 'var' isn't declared before the variable concat is because there is a comma after the variable assignment, opposed to a semi-colon.

 var gulp = require('gulp'),
    concat = require('gulp-concat');

Basically, by using a comma to separate the two variable declarations and assignments you don't need to state var for each variable.

Had the var gulp = require('gulp') declaration and assignment ended with a semi-colon then you would need to add var before concat as well to keep the scope correct. 

var gulp = require('gulp');
var concat = require('gulp-concat');

I may not be explaining this very well, but I hope that clears it up.

Tony Brackins
Tony Brackins
28,766 Points

oh gotcha! Didn't see the comma. Makes perfect sense now!