Question

react / node.js 我不知道是什么问题。它说他们是nodemon中的错误。但是，我找不到问题所在。请帮助我。

index.js:4 Uncaught TypeError: Cannot read property 'split' of undefined
    at Object.<anonymous> (index.js:4)
    at Object.../node_modules/nodemon/lib/utils/index.js (index.js:95)
    at __webpack_require__ (bootstrap:784)
    at fn (bootstrap:150)
    at Object.<anonymous> (run.js:3)
    at Object.../node_modules/nodemon/lib/monitor/run.js (run.js:459)
    at __webpack_require__ (bootstrap:784)
    at fn (bootstrap:150)
    at Object.../node_modules/nodemon/lib/monitor/index.js (index.js:2)
    at __webpack_require__ (bootstrap:784)
    at fn (bootstrap:150)
    ...

这是代码

var noop = function () { };
var path = require('path');
const semver = require('semver');
//here is the problem. There is a 'split'.
var version = process.versions.node.split('.') || [null, null, null];

var utils = (module.exports = {
  semver: semver,
  satisfies: test => semver.satisfies(process.versions.node, test),
  version: {
    major: parseInt(version[0] || 0, 10),
    minor: parseInt(version[1] || 0, 10),
    patch: parseInt(version[2] || 0, 10),
  },
  clone: require('./clone'),
  merge: require('./merge'),
  bus: require('./bus'),
  isWindows: process.platform === 'win32',
  isMac: process.platform === 'darwin',
  isLinux: process.platform === 'linux',
  isRequired: (function () {
...

Answer 1

如果要获取版本，请使用process.version而不是process.versions属性。

process应该是这样。

process {
  version: 'v12.16.2',
  versions: {
    node: '12.16.2',
    v8: '7.8.279.23-node.34',
    uv: '1.34.2',
    zlib: '1.2.11',
    brotli: '1.0.7',
    ares: '1.15.0',
    modules: '72',
    nghttp2: '1.40.0',
    napi: '5',
    llhttp: '2.0.4',
    http_parser: '2.9.3',
    openssl: '1.1.1e',
    cldr: '36.0',
    icu: '65.1',
    tz: '2019c',
    unicode: '12.1'
  },
  arch: 'x64',
  platform: 'darwin',
  release: {
    name: 'node',
    lts: 'Erbium',
    sourceUrl: 'https://nodejs.org/download/release/v12.16.2/node-v12.16.2.tar.gz',
    headersUrl: 'https://nodejs.org/download/release/v12.16.2/node-v12.16.2-headers.tar.gz'
  },

Answer 2

您试图用不存在的分隔符拆分字符串。例如

...
  ares: '1.15.0',
  napi: '5',
...

如果缺少值，请尝试替换为 0，而不是默认为 null。

TypeError：无法读取nodejs nodemon中未定义的属性“ split”

2 个答案: