title: error could not determine Node.js install directory
body: <p>I have tried to install ionic by doing <code>npm install ionic</code></p>
  <p><code>ionic start myapp blank</code> does not work and since then any npm commands tells me :</p>
  <pre><code>$ npm config
  node:internal/modules/cjs/loader:927
    throw err;
    ^
  
  Error: Cannot find module 'C:\Users\dandonneau.m\devc\node_modules\npm\bin\npm-cli.js'
      at Function.Module._resolveFilename (node:internal/modules/cjs/loader:924:15)
      at Function.Module._load (node:internal/modules/cjs/loader:769:27)
      at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
      at node:internal/main/run_main_module:17:47 {
    code: 'MODULE_NOT_FOUND',
    requireStack: []
  }
  Could not determine Node.js install directory
  </code></pre>