Treat {} in T = {} as any in JS files
#19977
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rbuckton
approved these changes
Nov 13, 2017
RyanCavanaugh
approved these changes
Nov 13, 2017
mhegazy
reviewed
Nov 13, 2017
| @@ -6454,7 +6454,10 @@ namespace ts { | |||
| } | |||
| for (let i = numTypeArguments; i < numTypeParameters; i++) { | |||
| const mapper = createTypeMapper(typeParameters, typeArguments); | |||
| const defaultType = getDefaultFromTypeParameter(typeParameters[i]); | |||
| let defaultType = getDefaultFromTypeParameter(typeParameters[i]); | |||
| if (defaultType && isTypeIdenticalTo(defaultType, emptyObjectType) && isJavaScriptImplicitAny) { | |||
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would emptyTypeLiteralType equality check do the trick?
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Any {} which has an alias symbol (like in react) would defeat that. IE,
type InternalMembers = {}
export class ComponentBase<P = InternalMembers> {}
mhegazy
approved these changes
Nov 13, 2017
|
@mhegazy I know I've already merged, but as an improvement, should this production of |
|
i guess we should flag them all for consistency... that applies to |
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This is mostly for cases like
react, where the component type is defined with restrictive default props of{}, which while great for TS consumers, makes things difficult for JS users, and makes consuming JS react components inside TS difficult.Fixes #19971