in src/plugman/install.js [596:612]
function copyPlugin (plugin_src_dir, plugins_dir, link, pluginInfoProvider) {
const pluginInfo = new PluginInfo(plugin_src_dir);
const dest = path.join(plugins_dir, pluginInfo.id);
if (link) {
events.emit('verbose', 'Symlinking from location "' + plugin_src_dir + '" to location "' + dest + '"');
fs.removeSync(dest);
fs.ensureSymlinkSync(plugin_src_dir, dest, 'junction');
} else {
events.emit('verbose', 'Copying from location "' + plugin_src_dir + '" to location "' + dest + '"');
fs.copySync(plugin_src_dir, dest);
}
pluginInfo.dir = dest;
pluginInfoProvider.put(pluginInfo);
return dest;
}