Add dry run option

[madnight]

If the dry run option is set, then no changes should happen, instead it should list all changes that would happen.

[sindresorhus]

Can you show an example of how that would look like? How would it list the changes?

[NightMachinery]

@sindresorhus I imagine sth like ripgrep is best; You can then show the replacement in another color. (I suggest using background colors, too.) This dryrun feature is essential for a calm replacement :D.

[sindresorhus]

@NightMachinary I like it 👍

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This dryrun feature is essential for a calm replacement :D.

Sure. However, this CLI is really meant to be used in run scripts of packages/apps, where you're already using Git, so you can always just revert the commit / working directory if you did something wrong.

[madnight]

Yup, I also like @NightMachinary proposal. Maybe one could also add a interactive mode, where the user has to confirm (y/n) each replacement.