--- /dev/null
+module.exports = add
+
+var assert = require('assert')
+var url = require('url')
+
+var npa = require('npm-package-arg')
+
+function add (uri, params, cb) {
+ assert(typeof uri === 'string', 'must pass registry URI to distTags.add')
+ assert(
+ params && typeof params === 'object',
+ 'must pass params to distTags.add'
+ )
+ assert(typeof cb === 'function', 'muss pass callback to distTags.add')
+
+ assert(
+ typeof params.package === 'string',
+ 'must pass package name to distTags.add'
+ )
+ assert(
+ typeof params.distTag === 'string',
+ 'must pass package distTag name to distTags.add'
+ )
+ assert(
+ typeof params.version === 'string',
+ 'must pass version to be mapped to distTag to distTags.add'
+ )
+ assert(
+ params.auth && typeof params.auth === 'object',
+ 'must pass auth to distTags.add'
+ )
+
+ var p = npa(params.package)
+ var pkg = p.scope ? params.package.replace('/', '%2f') : params.package
+ var rest = '-/package/' + pkg + '/dist-tags/' + params.distTag
+
+ var options = {
+ method: 'PUT',
+ body: JSON.stringify(params.version),
+ auth: params.auth
+ }
+ this.request(url.resolve(uri, rest), options, cb)
+}