Batch mkdir using Yeoman

Question

I am creating a Yeoman generator app. I want to create a set of parent directories and each parent directory has the same set of child templates.

Right now I am using the below commands repeatedly to achieve this. Is there a better way to loop over an array and achieve the same?

this.mkdir('app/scss/modules/tables');
this.mkdir('app/scss/modules/navigation');
this.mkdir('app/scss/modules/pagination');

this.copy('_extends.scss', 'app/scss/modules/navigation/_extends.scss');
this.copy('_mixins.scss', 'app/scss/modules/navigation/_mixins.scss');
this.copy('_variables.scss', 'app/scss/modules/navigation/_variables.scss');

this.copy('_extends.scss', 'app/scss/modules/pagination/_extends.scss');
this.copy('_mixins.scss', 'app/scss/modules/pagination/_mixins.scss');
this.copy('_variables.scss', 'app/scss/modules/pagination/_variables.scss');

this.copy('_extends.scss', 'app/scss/modules/tables/_extends.scss');
this.copy('_mixins.scss', 'app/scss/modules/tables/_mixins.scss');
this.copy('_variables.scss', 'app/scss/modules/tables/_variables.scss');

Answer 1

I reckon you'd need two arrays, and at least two loops.

In pseudocode:

dirs  = [ ... directories ... ];
files = [ ... files ... ];

for (directory in dirs) {
    mkdir (d);

    for (file in files) {
        copy(file, directory + file);
    }

}

If you ever need another directory with all files, or another file to go in all directories you'd just add it to the corresponding array.

Hope you find this useful!

Answer 2

You could also do something like this:

dirs  = [ "folder1", "folder2", "etc" ];
files = [ "file1", "file2", "etc" ];

dirs.forEach(function(directory){
    this.mkdir(directory);

    files.forEach(function(file){
        this.copy(file, directory + file);
    }.bind(this));

}.bind(this));

...if you want to avoid using a 'for-in' loop, since they're somewhat error-prone.