2dda2e10
 Administrator
generator ignore
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var mout = require('mout');
var Q = require('q');
var Project = require('../core/Project');
var defaultConfig = require('../config');
function uninstall(logger, names, options, config) {
if (!names.length) {
return new Q();
}
var project;
options = options || {};
config = defaultConfig(config);
project = new Project(config, logger);
return project.getTree(options)
.spread(function (tree, flattened) {
// Uninstall nodes
return project.uninstall(names, options)
// Clean out non-shared uninstalled dependencies
.then(function (uninstalled) {
var names = Object.keys(uninstalled);
var children = [];
// Grab the dependencies of packages that were uninstalled
mout.object.forOwn(flattened, function (node) {
if (names.indexOf(node.endpoint.name) !== -1) {
children.push.apply(children, mout.object.keys(node.dependencies));
}
});
// Clean them!
return clean(project, children, uninstalled);
});
});
}
function clean(project, names, removed) {
removed = removed || {};
return project.getTree()
.spread(function (tree, flattened) {
var nodes = [];
var dependantsCounter = {};
// Grab the nodes of each specified name
mout.object.forOwn(flattened, function (node) {
if (names.indexOf(node.endpoint.name) !== -1) {
nodes.push(node);
}
});
// Walk the down the tree, gathering dependants of the packages
project.walkTree(tree, function (node, nodeName) {
if (names.indexOf(nodeName) !== -1) {
dependantsCounter[nodeName] = dependantsCounter[nodeName] || 0;
dependantsCounter[nodeName] += node.nrDependants;
}
}, true);
// Filter out those that have no dependants
nodes = nodes.filter(function (node) {
return !dependantsCounter[node.endpoint.name];
});
// Are we done?
if (!nodes.length) {
return Q.resolve(removed);
}
// Grab the nodes after filtering
names = nodes.map(function (node) {
return node.endpoint.name;
});
// Uninstall them
return project.uninstall(names)
// Clean out non-shared uninstalled dependencies
.then(function (uninstalled) {
var children;
mout.object.mixIn(removed, uninstalled);
// Grab the dependencies of packages that were uninstalled
children = [];
nodes.forEach(function (node) {
children.push.apply(children, mout.object.keys(node.dependencies));
});
// Recurse!
return clean(project, children, removed);
});
});
}
// -------------------
uninstall.readOptions = function (argv) {
var cli = require('../util/cli');
var options = cli.readOptions({
'save': { type: Boolean, shorthand: 'S' },
'save-dev': { type: Boolean, shorthand: 'D' }
}, argv);
var names = options.argv.remain.slice(1);
delete options.argv;
return [names, options];
};
module.exports = uninstall;
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