Syntax breakage in Proxy.js

[thomasbalsloev]

Version

6.0.0-beta.21

Browser and OS info

Windows 10

Steps to reproduce

Vue project which includes devtool-api 6.0.0-beta.21.
Run "vue-cli-service build" to build your project.
See exception:

ERROR  Failed to compile with 1 error2:55:47 PM
14:55:47   
14:55:47    error  in ./node_modules/@vue/devtools-api/lib/esm/proxy.js
14:55:47   
14:55:47   Module parse failed: Unexpected token (3:10)
14:55:47   You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
14:55:47   | import { HOOK_PLUGIN_SETTINGS_SET } from './const';
14:55:47   | export class ApiProxy {
14:55:47   >     target;
14:55:47   |     targetQueue;
14:55:47   |     proxiedTarget;
14:55:47   
14:55:47    @ ./node_modules/@vue/devtools-api/lib/esm/index.js 3:0-35 14:40-48
14:55:47    @ ./node_modules/vue-router/dist/vue-router.esm-bundler.js
14:55:47    @ ./Mouseflow.App.Web/js/vue_input/router.js
14:55:47    @ ./Mouseflow.App.Web/js/vue_input/main.js
14:55:47    @ multi ./Mouseflow.App.Web/js/vue_input/main.js

What is expected?

class ApiProxy {
    constructor(plugin, hook) {
        this.target = null;
        this.targetQueue = [];
        this.onQueue = [];
        this.plugin = plugin;
        this.hook = hook;
...

What is actually happening?

class ApiProxy {
    target;
    targetQueue;
    proxiedTarget;
    onQueue;
    proxiedOn;
    plugin;
    hook;
    fallbacks;
    constructor(plugin, hook) {
        this.target = null;
        this.targetQueue = [];
        this.onQueue = [];
        this.plugin = plugin;
        this.hook = hook;
...

[leolivier]

Same here. I removed the lines pointed by @thomasbalsloev (before the constructor) and it compiled again

[havist]

Same issue here. Maybe the wrong build?

[kyrsquir]

Adding this to package.json helped me as a temporary solution (only works with yarn):

"resolutions": {
  "@vue/devtools-api": "6.0.0-beta.20.1"
}

[havist]

Yes, it does. Same for npm with npm install @vue/devtools-api@6.0.0-beta.20.1 --save-dev.
But this is not applicable for our micro frontend world, where we have dozens of such projects. I mean, it has to be fixed quickly.

[kyrsquir]

Direct installation of an older version only seems to help if you explicitly depend on @vue/devtools-api. For me the dependency is coming from vue-router and vuex

[havist]

That's exactly what I said. It cannot be fixed so, it's only a quick fix applicable to a single project at all.
Of course we have this dependency transitive as well from the 3rd party projects.

[Akryum]

I released an hotfix version 6.0.0-beta.21.1