Terser TypeError: Cannot read property 'minify' of undefined

[Skyline124]

Version

3.4.0

Reproduction link

https://github.com/Skyline124/flaskregul2.git

Environment info

  System:
    OS: Linux 4.15 Ubuntu 18.04.1 LTS (Bionic Beaver)
    CPU: (8) x64 Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
  Binaries:
    Node: 11.9.0 - /usr/bin/node
    Yarn: Not Found
    npm: 6.5.0 - /usr/bin/npm
  Browsers:
    Chrome: Not Found
    Firefox: 65.0
  npmPackages:
    @vue/babel-helper-vue-jsx-merge-props:  1.0.0-beta.2 
    @vue/babel-plugin-transform-vue-jsx:  1.0.0-beta.2 
    @vue/babel-preset-app:  3.4.0 
    @vue/babel-preset-jsx:  1.0.0-beta.2 
    @vue/babel-sugar-functional-vue:  1.0.0-beta.2 
    @vue/babel-sugar-inject-h:  1.0.0-beta.2 
    @vue/babel-sugar-v-model:  1.0.0-beta.2 
    @vue/babel-sugar-v-on:  1.0.0-beta.2 
    @vue/cli-overlay:  3.4.0 
    @vue/cli-plugin-babel: ^3.4.0 => 3.4.0 
    @vue/cli-plugin-eslint: ^3.4.0 => 3.4.0 
    @vue/cli-service: ^3.4.0 => 3.4.0 
    @vue/cli-shared-utils:  3.4.0 
    @vue/component-compiler-utils:  2.5.2 
    @vue/preload-webpack-plugin:  1.1.0 
    @vue/web-component-wrapper:  1.2.0 
    eslint-plugin-vue: ^5.0.0 => 5.1.0 
    vue: ^2.5.22 => 2.5.22 
    vue-eslint-parser:  2.0.3 
    vue-hot-reload-api:  2.3.1 
    vue-loader:  15.6.2 
    vue-style-loader:  4.1.2 
    vue-template-compiler: ^2.5.21 => 2.5.22 
    vue-template-es2015-compiler:  1.8.2 
  npmGlobalPackages:
    @vue/cli: 3.4.0

Steps to reproduce

Installation of latest NodeJS version

curl -sL https://deb.nodesource.com/setup_11.x | sudo bash -
sudo apt install nodejs

vue-cli installation

sudo npm install -g @vue/cli

creation of the example by default application

vue create flaskregul2 
cd flaskregul2
npm run build

What is expected?

Build is expected to finish successfully.

What is actually happening?

Build produces the following errors :

0 info it worked if it ends with ok
1 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'run', 'build' ]
2 info using npm@6.5.0
3 info using node@v11.9.0
4 verbose run-script [ 'prebuild', 'build', 'postbuild' ]
5 info lifecycle flaskregul2@0.1.0~prebuild: flaskregul2@0.1.0
6 info lifecycle flaskregul2@0.1.0~build: flaskregul2@0.1.0
7 verbose lifecycle flaskregul2@0.1.0~build: unsafe-perm in 
lifecycle true
8 verbose lifecycle flaskregul2@0.1.0~build: PATH: /usr/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/home/gregoire/flaskregul2/node_modules/.bin:/home/gregoire/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
9 verbose lifecycle flaskregul2@0.1.0~build: CWD: /home/gregoire/flaskregul2
10 silly lifecycle flaskregul2@0.1.0~build: Args: [ '-c', 'vue-cli-service build' ]
11 silly lifecycle flaskregul2@0.1.0~build: Returned: code: 1  signal: null
12 info lifecycle flaskregul2@0.1.0~build: Failed to exec build script
13 verbose stack Error: flaskregul2@0.1.0 build: `vue-cli-service build`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:301:16)
13 verbose stack     at EventEmitter.emit (events.js:197:13)
13 verbose stack     at ChildProcess.<anonymous> (/usr/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:197:13)
13 verbose stack     at maybeClose (internal/child_process.js:978:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:265:5)
14 verbose pkgid flaskregul2@0.1.0
15 verbose cwd /home/gregoire/flaskregul2
16 verbose Linux 4.15.0-43-generic
17 verbose argv "/usr/bin/node" "/usr/bin/npm" "run" "build"
18 verbose node v11.9.0
19 verbose npm  v6.5.0
20 error code ELIFECYCLE
21 error errno 1
22 error flaskregul2@0.1.0 build: `vue-cli-service build`
22 error Exit status 1
23 error Failed at the flaskregul2@0.1.0 build script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

---

I do not succeed to build the default app from your website into production. It seems that Terser is not processing the files properly but I am not able to identify the precise issue...

Any help would be appreciated!

[rebeccapeltz]

I just reported the same problem (#3408) duplicate

[rebeccapeltz]

I noticed that 3.4 was just released. I upgrade to 3.4 and tested and got the same error.

TypeError: Cannot read property 'minify' of undefined```

[sodatea]

A bug in terser 3.16 which was released hours ago.
For npm users: run npm i terser@3.14
For yarn users: add the following field to package.json and then rerun yarn:

"resolutions": {
  "terser": "3.14.1"
}

[sodatea]

See terser/terser#251

[carltierney]

we just downgraded to webpack 4.2 to avoid the use of terser which also worked.

[filipesilva]

terser/terser#254 should address this.

[ndabAP]

Installing terser@3.14.1 didn't resolve the issue for me. I had to downgrade Webpack as mentioned by @carltierney to 4.2.0.

[sr2ds]

On new test, the 3.6.1 version work with npm run build but don't work with vue-cli-service build.

[sodatea]

Both terser and terser-webpack-plugin have released a new patch version to address this issue.
Please delete your lockfile and node_modules and reinstall the deps.

If there's any further problems please open a new issue with a corresponding reproduction.

[jrozos]

running npm install terser@3.14 worked for me too

[KarmaBlackshaw]

The aforementioned workarounds does not seem to work in my case :(

js/app.5f6168a5.js from Terser
Unexpected token operator «+», expected punc «,» [webpack/bootstrap:71,1167][js/app.5f6168a5.js:72,1178]
    at ee (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:19541)
    at c (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:28244)
    at l (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:28335)
    at p (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:28475)
    at _ (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:28587)
    at F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:43316
    at F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:28976
    at G (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:42192)
    at ge (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:48272)
    at Ae (F:\my-business\capstone-cte-ims\ui\node_modules\terser-webpack-plugin\node_modules\terser\dist\bundle.min.js:1:48998)