tooljs-tool/lib/proto.js

Composible Tooling for JavaScript

/**
 * Execute all middleware and nested tools.
 *
 * @api public
 */

exports.exec = function(done){
  var middleware = this.constructor.middleware;
  var self = this;
  var i = 0;

  function next() {
    var fn = middleware[i++];
    if (!fn) return done();
    self.run(fn, next);
  }

  next();
};

/**
 * Run a single middleware.
 *
 * TODO: refactor.
 */

exports.run = function(fn, next){
  if (fn.isTool) {
    // assuming it's a `Tool` constructor.
    var Tool = fn;
    var opts = this.opts[Tool.id];
    var tool = new Tool(opts, this);
    tool.exec(next);
  } else {
    fn.call(this, next);
  }
};

/**
 * Handle errors.
 *
 * @api public
 */

exports.error = function(err){
  throw err;
};