mac nrm用不了

Question

lanweipeng@dst71896 bin % nrm ls
internal/modules/cjs/loader.js:305

  throw err;
  ^

Error: Cannot find module '/Users/lanweipeng/.npm-global/lib/node_modules/nrm/node_modules/npm/index.js'. Please verify that the package.json has a valid "main" entry

at tryPackage (internal/modules/cjs/loader.js:297:19)
at Function.Module._findPath (internal/modules/cjs/loader.js:528:18)
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:780:27)
at Function.Module._load (internal/modules/cjs/loader.js:686:27)
at Module.require (internal/modules/cjs/loader.js:848:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (/Users/lanweipeng/.npm-global/lib/node_modules/nrm/cli.js:6:13)
at Module._compile (internal/modules/cjs/loader.js:955:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:991:10)
at Module.load (internal/modules/cjs/loader.js:811:32) {

code: 'MODULE_NOT_FOUND',
path: '/Users/lanweipeng/.npm-global/lib/node_modules/nrm/node_modules/npm/package.json',
requestPath: 'npm'
}