npm 安装 chromedriver 时，偶尔会出错，错误提示类似于：

> chromedriver@2.46.0 install C:\Users\lixia\Desktop\gitLab\logistics-web\node_modules\chromedriver
> node install.js

Current existing ChromeDriver binary is unavailable, proceding with download and extraction.
Downloading from file:  https://chromedriver.storage.googleapis.com/2.46/chromedriver_win32.zip
Saving to file: C:\Users\lixia\AppData\Local\Temp\2.46\chromedriver\chromedriver_win32.zip
ChromeDriver installation failed Error with http(s) request: Error: read ECONNRESET
npm WARN ajv-keywords@3.4.1 requires a peer of ajv@^6.9.1 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! chromedriver@2.46.0 install: `node install.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the chromedriver@2.46.0 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\lixia\AppData\Roaming\npm-cache\_logs\2020-04-07T07_12_14_242Z-debug.log

经分析发现，某些版本下，chromedriver 的 zip 文件 url 的响应是 302 跳转，而在 install.js 里使用的是 Node.js 内置的 http 对象的 get 方法无法处理 302 跳转的情况；而在另外一些情况下，则是因为 googleapis.com 被墙了，此时即使采用科学上网的方法也仍然无法获取文件。

无论是上述哪种情况，可以使用下面的命令安装(使用 cnpm 安装亦可)：

npm install chromedriver --chromedriver_cdnurl=http://cdn.npm.taobao.org/dist/chromedriver