@zebrajaeger/gulp-simple-env v1.0.3

gulp-simple-env

Define your environments

I.E. we define two environments: 'foo' and 'bar'.

const e = require('@zebrajaeger/gulp-simple-env')({
    env: ['foo', 'bar']
});

You can define as much environments as you want.

Hint:

For js-conform naming, the env-names are camel-cased. 'my-great-env' becomes to isMyGreatEnv(...). The command line name is unchanged: gulp --my-great-env For the replacement strategy, take a look at https://www.npmjs.com/package/camelcase

Activate environment through command line argument(s)

gulp --foo
gulp --bar
gulp --foo --bar

Generic: Check if a specific environment is (not) set

e.isFoo(): true or false 
e.isNotFoo(): true or false
e.isBar(): true or false 
e.isNotBar(): true or false

Gulp: Execute tasks dependent from environment

gulp.src(...).pipe( e.isFoo(...) ).dest(...);
gulp.src(...).pipe( e.isNotFoo(...) ).dest(...);
gulp.src(...).pipe( e.isBar(...) ).dest(...);
gulp.src(...).pipe( e.isNotBar(...) ).dest(...);

As an alternative you can provide a trueStream and a falseStream

.pipe( e.isFoo(uglify(), prettify()) )

Your example gulpfile.js

const g = require('gulp');
const e = require('@zebrajaeger/gulp-simple-env')({env: ['foo', 'bar']});

const print = require('gulp-print').default;

g.task('default', cb => {
    return g
        .src('*.js')
        .pipe(e.isFoo(print()))
});