info() not seeing browserlist configuration

This is similar to #838.

When using 7.1.6, the info() method on the plugin returns the default list of browsers no matter what your configuration is.

Example usage:

.browserslistrc (or browserslist, or package.json)

safari >= 6

gulpfile.js

var autoprefixer = require('autoprefixer');

var ap = autoprefixer({
	cascade: false,
	add: true,
	remove: false,
	supports: true,
	flexbox: true,
	grid: false
});

console.log(ap.info());

Results in this output:

Browsers:
  Chrome for Android: 61
  Firefox for Android: 56
  And_qq: 1.2
  UC for Android: 11.4
  Android: 56, 4.4.3-4.4.4
  Baidu: 7.12
  Bb: 10, 7
  Chrome: 62, 61, 60, 49
  Edge: 16, 15
  Firefox: 56, 55, 52
  IE: 11, 10
  IE Mobile: 11, 10
  iOS: 11, 10.3, 10.0-10.2
  Opera Mini: all
  Opera Mobile: 37, 12.1
  Opera: 48, 47
  Safari: 11, 10.1
  Samsung: 5, 4

Where the correct output would look like:

Browsers:
  Safari: 11, 10.1, 10, 9.1, 9, 8, 7.1, 7, 6.1, 6

Looking into the code, I believe the issue is that the plugin.info method’s opts var is undefined since nothing is passed in (as per the docs).

I believe the fix is to change line 96 to be:

return require('./info')(loadPrefixes({ from: path.resolve('.') }));

I’d be happy to make a PR to this effect, but I wanted to open a discussion first!

[ai]

You must provide from option

console.log(ap.info({ from: process.cwd() }));

But I understand that it is not clear. There are 2 options:

1. Add default value (process.cwd) to from. But if users will have different configs (like src/legacy/.browserslistrc), they will not know how to load it properly.
2. Show warning on missed from option.

What do you think?

[ai]

Sorry. Grid fix was delayed. Hope to release it on next week.