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

Tony Brackins
Tony Brackins
28,766 Points
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
Tony Brackins
Tony Brackins
28,766 Points

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