undefined | Webpack / Happypack / Gulp / Postcss / Stylus / Nunjucks / | Frontend Framework library

The difference in behaviour can be accounted for by this behaviour, described in (for instance) the following note in ECMAScript 2022 Language Specification sect 14.3.2.1:

NOTE: If a VariableDeclaration is nested within a with statement and the BindingIdentifier in the VariableDeclaration is the same as a property name of the binding object of the with statement's object Environment Record, then step 5 will assign value to the property instead of assigning to the VariableEnvironment binding of the Identifier.

In the first case:

Javascript is case sensitive. I see that you used subreport and it should be subReport with a capital R.

You function getTab seems not right, you are currently trying to query on the url. Not on the query options. The following function should work.

You seem to be confusing useState with the class component's state.

Running setState({ testInfo: testInfoArray }); sets the entire state to { testInfo: testInfoArray }, removing state.selectedParagraph entirely, causing it to be undefined.

You'll want to use useState multiple times, like this:

Nuxt makes the $config available in two ways: as this.$config on every component instance, and context.$config passed to "special nuxt lifecycle areas like asyncData, fetch, plugins, middleware and nuxtServerInit" (docs).

It looks like you need to access the $config outside a component, so you'll need to retrieve it early in the request cycle. In particular, since you're mutating the Vue.prototype, this feels like a good fit for a plugin in the Nuxt sense, which isn't quite what you've got in your code.

If you put your plugin file in the plugins directory and reference it from the plugins array in nuxt.config.js (see link above for a broader example), you could rewrite it like this to access $config:

Why are you calling client in a command file if you already started a new instance of a client in your root file? try removing client from the top of the code. Hope that works

Surprisingly, this is not undefined behavior.

Static initialization [basic.start.static]

Constant initialization is performed if a variable or temporary object with static or thread storage duration is constant-initialized. If constant initialization is not performed, a variable with static storage duration or thread storage duration is zero-initialized. Together, zero-initialization and constant initialization are called static initialization; all other initialization is dynamic initialization. All static initialization strongly happens before any dynamic initialization.

Important parts bold-faced. "Static initialization" includes global variable initialization, "static storage duration" includes global variables, and the above clause is applicable here:

your original object doesn't have a addons key, hence you can't call the push property on it, first create that key and assign to empty array

Try this code