diff options
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 9 |
1 files changed, 5 insertions, 4 deletions
@@ -98,8 +98,8 @@ The available options are: "@preserve". You can optionally pass one of the following arguments to this flag: - "all" to keep all comments - - a valid JS regexp (needs to start with a - slash) to keep only comments that match. + - a valid JS RegExp like `/foo/` or `/^!/` to + keep only matching comments. Note that currently not *all* comments can be kept when compression is on, because of dead code removal or cascading statements into @@ -855,10 +855,11 @@ which we care about here are `source_map` and `comments`. #### Keeping comments in the output In order to keep certain comments in the output you need to pass the -`comments` option. Pass a RegExp, boolean or a function. Stringified options +`comments` option. Pass a RegExp (as string starting and closing with `/` +or pass a RegExp object), a boolean or a function. Stringified options `all` and `some` can be passed too, where `some` behaves like it's cli equivalent `--comments` without passing a value. If you pass a RegExp, -only those comments whose body matches the regexp will be kept. Note that body +only those comments whose body matches the RegExp will be kept. Note that body means without the initial `//` or `/*`. If you pass a function, it will be called for every comment in the tree and will receive two arguments: the node that the comment is attached to, and the comment token itself. |