Allowing regex to match only first

[ZSkycat]

When I only need to find the first one, I don't need g flag.

scenes to be used: https://github.com/ZSkycat/ghost-progress-webpack-plugin/blob/master/src/helper.ts#L80

[sindresorhus]

Sounds like a valid use-case. I don't think it should accept regex flags though, but rather an option called onlyFirst to match only the first item.

[ZSkycat]

Agree, I will modify my commit