TypeScript Version: 4.0.0-dev.20200701
VS Code Version: 1.47.0-insider commit: b16b467d3e

Search Terms:
deprecated

Code

/** @deprecated */
type Props = {
  /** @deprecated */
  old: string,
  new: string,
}

/** @deprecated */
const Component = (props: Props) => <div />;

<Component old="old" new="new" />

/** @deprecated */
type Options = {
  /** @deprecated */
  old: string;
  new: string;
}

/** @deprecated */
const deprecatedFunction = (options: Options) => {}

deprecatedFunction({
  old: "",
  new: "hi",
});

Expected behavior:
All deprecated usages have strikethrough styles: <Component>, the old prop on Component, deprecatedFunction, old

Actual behavior:
Only props and options have strikethrough styles.

Playground Link:
Strikethrough isn't visible here, but ... is (just like stable VS Code vs. Insiders).
https://www.typescriptlang.org/play/?jsx=2&ts=4.0.0-beta&ssl=29&ssc=1&pln=1&pc=1#code/JYWwDg9gTgLgBAJQKYEMDG8BmUIjgIilQ3wG4AocgegCoa4ABAEyTCLRRiSbhqvJgBPMEjgAFHGADOcALxwA3uThxa9Zq3aduvfiogAbJgC44UmFGAA7AOYAaZXCtIA7qfOXbDgL6U1jFjYkDi4ePnI0CCtzOABhXEhnK3h5AAo2CGlTCUypAEo5AD44AB4mYAA3VUKKchL48CikZLhDJll8NvwnVw7nF26qQr86AM1g7TD+IRE4AHkwGGAomXklFX8NIJCdcP0jdwtrGwoVfsPPE-JfalGtrVDdCJX4QIfuADEAVysMZas5HBUpklitTAtQdECrJigobm8JqFvr9Ial1q0DgR8A4zq5TPgABbAbHXPIUIA

Related Issues:
None (feature is new to 4.0)