Add test case for intersection/constraint bug fixed in 4.9 #54972
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sandersn
requested changes
Jul 13, 2023
| const myFirstFunction = <T extends FirstInterface | SecondInterface>(param1: T) => { | ||
| const newParam: T & { otherProperty: number } = Object.assign(param1, { otherProperty: 3 }) | ||
| ~~~~~~ | ||
| !!! error TS2550: Property 'assign' does not exist on type 'ObjectConstructor'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2015' or later. |
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it would be nice to have 0 errors by switching to es2015 or higher, or else by moving newParam to being a parameter so it doesn't have an initialiser.
sandersn
approved these changes
Jul 13, 2023
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Fixes #24688