FWeinbmetalsmith-watch 
Metalsmith plugin to watch for changes and trigger partial and full rebuilds.
Installation
$ npm install metalsmith-watchUsage
var metalsmith = require('metalsmith');
var watch = require('metalsmith-watch');
metalsmith(__dirname)
.use(
watch({
paths: {
"${source}/**/*": true,
"templates/**/*": "**/*.md",
},
livereload: true,
})
)
.build();Options
paths (default: {"${source}/**/*": true})
Map of paths to trigger rebuild. Both keys and value accept a glob pattern.
{
"file(s) to watch": "file(s) to rebuild"
}Value accept a boolean. When a boolean is used, only watched files changed will be rebuilded.
{
"${source}/**/*": true, // every changed files will trigger a rebuild of themselves
"templates/**/*": "**/*", // every templates changed will trigger a rebuild of all files
}Please note that:
${source}is replaced bymetalsmith.source().- values of the map are relative to
metalsmith.source()(because it's the only place where to build files)
livereload (default: false)
Allows you to enable a livereload server.
Using a boolean will enable a livereload server on port the default port is 35729.
Accept a port number to start on the port you need.
To get live reload working properly, you should add the following <script> in your templates files to enable livereloading of each pages:
<script src="http://localhost:35729/livereload.js"></script>Make sure to update the port number in the script above accordingly to the port specified.
log (default: function(...args) { console.log(prefix, ...args)})
Function used to display the logs.
invalidateCache (default: true)
Allows you to enable cache invalidation for js files. Convenient if you use some js files for templates (eg: React templates) to get updated components. If disabled you won't get update for changed js files as node/iojs use a cache.