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interface Type inference #20953

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kgtkr opened this issue Jan 1, 2018 · 1 comment
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interface Type inference #20953

kgtkr opened this issue Jan 1, 2018 · 1 comment
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@kgtkr
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kgtkr commented Jan 1, 2018

TypeScript Version: 2.5.2
Code

interface ITest {
  f(x: number): string;
}

class Test implements ITest {
  f(x){
    
  }
}

Expected behavior:
x is number

Actual behavior:
x is any
@kgtkr kgtkr changed the title imterface Type inference interface Type inference Jan 1, 2018
@DanielRosenwasser DanielRosenwasser added the Duplicate An existing issue was already created label Jan 1, 2018
@DanielRosenwasser
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Looks like a duplicate of #7011

@microsoft microsoft locked and limited conversation to collaborators Jul 3, 2018
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@DanielRosenwasser @kgtkr