Nodejs npm腳本失敗，出現“SyntaxError：Unexpected token {”

Question

我剛剛將我的Reactjs項目導入到Ubuntu上的新機器上，並且通過npm install成功安裝了大多數依賴項， npm install執行以下操作：

npm WARN optional Skipping failed optional dependency /react-scripts/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.0.17
npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.1.2

嘗試使用npm start運行項目失敗：

> booking-frontend@0.1.0 start /root/17-visit-booker-frontend
> react-scripts start


/root/17-visit-booker-frontend/node_modules/react-scripts/scripts/start.js:33
const {
      ^

SyntaxError: Unexpected token {
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:374:25)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Function.Module.runMain (module.js:442:10)
    at startup (node.js:136:18)
    at node.js:966:3

npm ERR! Linux 4.4.0-81-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "start"
npm ERR! node v4.2.6
npm ERR! npm  v3.5.2
npm ERR! code ELIFECYCLE
npm ERR! booking-frontend@0.1.0 start: `react-scripts start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the booking-frontend@0.1.0 start script 'react-scripts start'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the booking-frontend package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     react-scripts start
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs booking-frontend
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls booking-frontend
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /root/17-visit-booker-frontend/npm-debug.log

嘗試運行任何npm腳本（包括npm run build all）都會失敗，並在SyntaxError中引用每個文件中的相同行完全相同的錯誤：

SyntaxError: Unexpected token {
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:374:25)
    at Object.Module._extensions..js (module.js:417:10)
    at Module.load (module.js:344:32)
    at Function.Module._load (module.js:301:12)
    at Function.Module.runMain (module.js:442:10)
    at startup (node.js:136:18)
    at node.js:966:3

在我的原始機器上運行相同的腳本，Mac，成功。

我已經嘗試重新安裝node / npm ，這不能解決問題。 是否可選的依賴導致此失敗？

任何幫助表示贊賞。

Answer 1

您正在使用node.js v4，它默認情況下不支持失敗的解構語法（ const {field1, field2, ....} = object ）。

您有兩種選擇：

1. 安裝較新版本的Node.js.
2. 使用和聲標志運行節點，該標志將在版本4.x中啟用此功能。