Problem running ng build Angular

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Hello, I’m having trouble in Angular when I run the following command to building in the project directory ng build --prod --aot=false, how do I fix the problem? What and why is this error occurring?
Below is the log of the error that occurs after executing the command.

ERROR in vendor.0963fa6ef0f8a97eaa25.bundle.js from UglifyJs
TypeError: Cannot read property '_walk' of null
    at AST_Dot.eval (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1112:29)
    at TreeWalker._visit (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1513:21)
    at AST_Dot._walk (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1111:24)
    at AST_VarDef.eval (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1058:40)
    at TreeWalker._visit (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1513:21)
    at AST_VarDef._walk (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1056:24)
    at AST_Var.eval (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:966:32)
    at TreeWalker._visit (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1513:21)
    at AST_Var._walk (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:963:24)
    at walk_body (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:513:17)
    at AST_Function.eval (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:739:13)
    at TreeWalker._visit (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:1513:21)
    at AST_Function._walk (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:733:24)
    at AST_Function.walk (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:467:21)
    at get_lvalues (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:8804:34)
    at collapse (eval at <anonymous> (/home/marcelo/Desktop/Mercatorio/dashboard/node_modules/uglifyjs-webpack-plugin/node_modules/uglify-es/tools/node.js:21:1), <anonymous>:8565:35)

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angular build cli

  • Try running the npm install --update-binaries --noshrinkwrap command Something else update your angular cli version

  • Which command to update angular cli

  • npm install -g @angular/cli@latest

  • And one more question the command you want to run to build the right way is this ng build --no-Aot --Prod

  • I’m having trouble upgrading the angular cli, npm ERR! path /usr/lib/node_modules/@angular/cli ...

  • If you are in windows try to run this command as administrator

  • I’m on Linux, when I give a sudo before, he says it all worked out but the cli version of angular permance unchanged

  • Then do the following, remove the angular cli and then install a new version npm remove @angular/cli -g npm cache clean npm i @angular/cli -

  • how do I remove?

  • npm remove @angular/cli -g

  • I removed and reinstalled the angular cli and changed nothing :/

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1 answer

1

The error you have apparently relates to this angular-cli link https://github.com/angular/angular-cli/issues/12414#issuecomment-428161804

He says that if your project has a library dependency tether you have to realize the downgrade for version 1.4.3.

Or update the terser for the version 3.10.7, following in the footsteps:

  • check the current installed version of terser: npm ls terser
  • install and uninstall the terser with npm install [email protected] npm uninstall terser
  • now you should see the latest version of the terser in npm ls terser

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