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Object.assign({}) seems to always return a type any #29348
Description
TypeScript Version: 3.3.0-dev.20190110
Search Terms: Object.assign
Code
function foo(): {foo: string} {
return Object.assign({});
}Interestingly the code:
function bar(): {bar: string} {
return Object.assign({}, {bar: 1});
}does report the expected error
Expected behavior: TypeScript should report an error because the type returned by return Object.assign({}); does not mach {foo: string} but instead the type any is assumed.
Actual behavior: No error is shown
Related Issues: no
Activity
[-]Object.assert({}) [/-][+]Object.assert({}) seems to always return a type any[/+][-]Object.assert({}) seems to always return a type any[/-][+]Object.assign({}) seems to always return a type any[/+]weswigham commentedon Jan 10, 2019
We should probably make it forbidden for the catch-all signature on
Object.assignto take a single argument.