在heroku中部署时找不到模块'@ angular / compiler'

Question

  

@ angular / cli @ 8.1.1安装后/tmp/build_bf9f313fb8298a0d2a3665151895f43e/.heroku/node/lib/node_modules/@angular/cli   节点./bin/postinstall/script.js

   + @angular/cli@8.1.1
   + @angular/compiler-cli@8.1.1
   + typescript@3.5.3
   added 453 packages from 257 contributors in 26.26s

   > oshop@0.0.0 postinstall /tmp/build_bf9f313fb8298a0d2a3665151895f43e
   > ng build --prod

   Cannot find module '@angular/compiler'
   Error: Cannot find module '@angular/compiler'
       at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
       at Function.Module._load (internal/modules/cjs/loader.js:562:25)
       at Module.require (internal/modules/cjs/loader.js:690:17)
       at require (internal/modules/cjs/helpers.js:25:18)
       at /tmp/build_bf9f313fb8298a0d2a3665151895f43e/node_modul

似乎正在安装angular / compiler，但是在heroku中找不到模块