The type of query is wrong and may be undefined.

[lzy1960]

Version

3.6.5

Reproduction link

lzy1960/vue-router-query-ts-error

Steps to reproduce

run npx eslint src/views/HomeView.vue, then throw two eslint warning

What is expected?

1. getElementsByClassName maybe return undefined, so secondPart is not always falsy
2. this.$route.query.xxx maybe undefined, but the type is not contain undefined

In short, neither warning should appear.

What is actually happening?

Two no-autofix/@typescript-eslint/no-unnecessary-condition appeared that should not appear

[posva]

Duplicate of vuejs/router#1891 (comment)

In short, it's a breaking change and it will happen in a next major