narrowed type information disappears inside v-for

[NiloCK]

• I have searched through existing issues (not exhaustively)
• I have read through docs
• I have read FAQ
• I have tried restarting VS Code or running Vetur: Restart VLS

Info

• Platform: Linux

• Vetur version: 0.35.0

• VS Code version: 1.63.2

• Typescript version: ^3.5.3 (pkg.json), 3.9.10 (yarn.lock)

• "vue": "^2.6.10", 2.6.14 (yarn.lock)

• "vue-class-component": "^6.3.2", 6.3.2 (yarn.lock)

• "@typescript-eslint/eslint-plugin": "^4.18.0",

• "@typescript-eslint/parser": "^4.18.0",

Problem

no vetur error message, just getting incorrect warnings on a narrowed type.

Play-by-play:

• token is a marked.Token, which is a discriminated union type of ... tokens.
• token.type === 'paragraph' narrows the type to marked.Tokens.Paragraph
• (line 44) correct narrowed type is inferred
• (line 47) the inferred type information is lost

Reproducible Case

n/a. Can attempt at a later date if necessary.

[yoyo930021]

Please provide a repro case.
https://github.com/vuejs/vetur/blob/master/.github/NO_REPRO_CASE.md