Cannot read property 'tap' of undefined

 

e:\vue-project\vue-element-admin-master>npm run build:prod

vue-element-admin@3.8.1 build:prod e:\vue-project\vue-element-admin-master
cross-env node_env=production env_config=prod node build/build.js

• building for prod environment...e:\vue-project\vue-element-admin-master\node_modules\script-ext-html-webpack-plugin\lib\plugin.js:50
  compilation.hooks.htmlwebpackpluginalterassettags.tap(plugin, alterassettags);
  ^

typeerror: cannot read property 'tap' of undefined
at scriptexthtmlwebpackplugin.compilationcallback (e:\vue-project\vue-element-admin-master\node_modules\script-ext-html-webpack-plugin\lib\plugin.js:50:57)
at synchook.eval [as call] (eval at create (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hookcodefactory.js:17:12), :11:1)
at synchook.lazycompilehook [as _call] (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hook.js:35:21)
at compiler.newcompilation (e:\vue-project\vue-element-admin-master\node_modules\webpack\lib\compiler.js:504:26)
at hooks.beforecompile.callasync.err (e:\vue-project\vue-element-admin-master\node_modules\webpack\lib\compiler.js:540:29)
at asyncserieshook.eval [as callasync] (eval at create (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hookcodefactory.js:24:12), :6:1)
at asyncserieshook.lazycompilehook [as _callasync] (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hook.js:35:21)
at compiler.compile (e:\vue-project\vue-element-admin-master\node_modules\webpack\lib\compiler.js:535:28)
at readrecords.err (e:\vue-project\vue-element-admin-master\node_modules\webpack\lib\compiler.js:274:11)
at compiler.readrecords (e:\vue-project\vue-element-admin-master\node_modules\webpack\lib\compiler.js:402:11)
at hooks.run.callasync.err (e:\vue-project\vue-element-admin-master\node_modules\webpack\lib\compiler.js:271:10)
at asyncserieshook.eval [as callasync] (eval at create (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hookcodefactory.js:24:12), :6:1)
at asyncserieshook.lazycompilehook [as _callasync] (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hook.js:35:21)
at hooks.beforerun.callasync.err (e:\vue-project\vue-element-admin-master\node_modules\webpack\lib\compiler.js:268:19)
at asyncserieshook.eval [as callasync] (eval at create (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hookcodefactory.js:24:12), :15:1)
at asyncserieshook.lazycompilehook [as _callasync] (e:\vue-project\vue-element-admin-master\node_modules\tapable\lib\hook.js:35:21)
npm err! code elifecycle
npm err! errno 1
npm err! vue-element-admin@3.8.1 build:prod: cross-env node_env=production env_config=prod node build/build.js
npm err! exit status 1
npm err!
npm err! failed at the vue-element-admin@3.8.1 build:prod script.
npm err! this is probably not a problem with npm. there is likely additional logging output above.

npm err! a complete log of this run can be found in:
npm err! c:\users\administrator\appdata\roaming\npm-cache_logs\2018-09-05t05_37_15_612z-debug.log

 

解决方法:

• set "html-webpack-plugin": "^4.0.0-alpha" => "4.0.0-alpha"
• remove node_modules
• remove package-lock.json
• npm install