TypeError: Cannot read property 'pipe' of undefined

[andrejewski]

Setup:

git clone canjs/canjs
npm i
./node_modules/.bin/bit-docs -d

Output:

BUILD: Installing packages
/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/q/q.js:126
                    throw e;
                    ^

TypeError: Cannot read property 'pipe' of undefined
    at _reduceStream (/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/enpeem/reduceStream.js:21:3)
    at /Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/enpeem/reduceStream.js:36:3
    at doNpmCommand (/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/enpeem/index.js:72:3)
    at Object.install (/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/enpeem/index.js:21:12)
    at installPackages (/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/bit-docs-generate-html/build/static_dist.js:145:6)
    at /Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/bit-docs-generate-html/build/static_dist.js:97:12
    at _fulfilled (/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/q/q.js:854:54)
    at self.promiseDispatch.done (/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/q/q.js:883:30)
    at Promise.promise.promiseDispatch (/Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/q/q.js:816:13)
    at /Users/chrisandrejewski/Desktop/Work/github-repos/canjs/node_modules/bit-docs/lib/configure/node_modules/q/q.js:624:44

Note: When I re-run the command the build completes.