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tests/cases/compiler/expressionWithJSDocTypeArguments.ts(9,21): error TS8020: JSDoc types can only be used inside documentation comments.
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(10,20): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(11,21): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(12,23): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(12,24): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(14,28): error TS8020: JSDoc types can only be used inside documentation comments.
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(15,27): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(16,28): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(17,30): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(17,31): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(19,21): error TS8020: JSDoc types can only be used inside documentation comments.
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(20,20): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(21,21): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(22,23): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(22,24): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(24,28): error TS8020: JSDoc types can only be used inside documentation comments.
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(25,27): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(26,28): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(27,30): error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
tests/cases/compiler/expressionWithJSDocTypeArguments.ts(27,31): error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
==== tests/cases/compiler/expressionWithJSDocTypeArguments.ts (20 errors) ====
// Repro from #51802
function foo<T>(x: T): T { return x }
class Bar<T> { constructor(public x: T) { } }
// Errors expected on all of the following
const WhatFoo = foo<?>;
~
!!! error TS8020: JSDoc types can only be used inside documentation comments.
const HuhFoo = foo<string?>;
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
const NopeFoo = foo<?string>;
~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
const ComeOnFoo = foo<?string?>;
~~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
type TWhatFoo = typeof foo<?>;
~
!!! error TS8020: JSDoc types can only be used inside documentation comments.
type THuhFoo = typeof foo<string?>;
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
type TNopeFoo = typeof foo<?string>;
~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
type TComeOnFoo = typeof foo<?string?>;
~~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
const WhatBar = Bar<?>;
~
!!! error TS8020: JSDoc types can only be used inside documentation comments.
const HuhBar = Bar<string?>;
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
const NopeBar = Bar<?string>;
~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
const ComeOnBar = Bar<?string?>;
~~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
type TWhatBar = typeof Bar<?>;
~
!!! error TS8020: JSDoc types can only be used inside documentation comments.
type THuhBar = typeof Bar<string?>;
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
type TNopeBar = typeof Bar<?string>;
~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
type TComeOnBar = typeof Bar<?string?>;
~~~~~~~~
!!! error TS17020: '?' at the start of a type is not valid TypeScript syntax. Did you mean to write 'string | null | undefined'?
~~~~~~~
!!! error TS17019: '?' at the end of a type is not valid TypeScript syntax. Did you mean to write 'string | undefined'?
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