Type inference for exact strings

TypeScript Version: 2.2.2

Code

interface Css {
  position: 'absolute' | 'relative';
}
function style(rules: Css) { }

const rules = { position: 'absolute' };
style(rules);
style({ position: 'absolute' });

Expected behavior:
There should be no type issues.

Actual behavior:
style(rules) yields

Argument of type '{ position: string; }' is not assignable to parameter of type 'Css'
Types of property 'position' are incompatible

Using style({position: 'absolute'}) works fine.

#16360 just now seemed a bit similar (about tuples instead of objects).

duplicate of #16523 and #12955

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.

Navigation Menu

Repository navigation

Type inference for exact strings #16276

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Type inference for exact strings #16276

Description

Activity

KiaraGrouwstra commented on Jun 9, 2017

mhegazy commented on Aug 26, 2017

mhegazy commented on Sep 11, 2017

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions