fix(language-core): should not make $props optional

[KazariEX]

fix #4876

[pkg-pr-new]

Open in Stackblitz

vue-component-meta

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-component-meta@4878

vue-component-type-helpers

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-component-type-helpers@4878

@vue/language-core

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-core@4878

@vue/language-plugin-pug

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-plugin-pug@4878

@vue/language-server

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-server@4878

vue-tsc

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-tsc@4878

@vue/language-service

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-service@4878

@vue/typescript-plugin

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/typescript-plugin@4878

commit: 233b7fb

[davidmatter]

LGTM

[rchl]

Not sure if this is correct in general.

Try with a component with props:

  msg: {
    type: String,
    default: null
  }

In that case the prop should be optional but won't.

I feel like that might need coordination with changes in Vue types.