无法从d3-geo-projection运行geoproject

Question

我正在尝试跟随迈克博斯托克tutorial。每次我想运行geoproject时，我都会收到以下错误：

/usr/local/lib/node_modules/d3-geo-projection/bin/geoproject:5
    d3 = Object.assign({}, require("d3-geo"), require("../")),
                ^
TypeError: undefined is not a function
    at Object.<anonymous> (/usr/local/lib/node_modules/d3-geo-projection/bin/geoproject:5:17)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3