CoffeeScript + Node.js - "delete" function

I have a little problem with CoffeeScript. I'm trying to build a RESTful API in Node.js and Express. Here is the problematic part of the code:

express = require('express');
router = express.Router()
router.route '/todos/:todo_id'
.get (req, res) ->
    # do get ...
.delete (req, res) ->
    # do delete ...
.put (req, res) ->
    # do put ...

Which compiles to:

router.route('/todos/:todo_id')
.get(function(req, res) {
    # here's my get code
})["delete"](function(req, res) {
    # here's my delete code
}).put(function(req, res) {
    # here's my put code
});

The "delete" keyword seems to be tricky - when I replace it with any other word (get, put, delet, whatever), it compiles to .keyword just fine, but only "delete" keyword compiles to array-access-thing. I can't use any other keyword because of REST. Any ideas? Thank you.