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tests/cases/compiler/optionalParamAssignmentCompat.ts(10,5): error TS2322: Type '(p1?: string) => I1' is not assignable to type 'I1'.
Types of parameters 'p1' and 'p1' are incompatible.
Type 'number' is not assignable to type 'string'.
==== tests/cases/compiler/optionalParamAssignmentCompat.ts (1 errors) ====
interface I1 {
(p1: number, p2: string): void;
}
interface I2 {
p1: I1;
m1(p1?: string): I1;
}
var i2: I2;
var c: I1 = i2.p1; // should be ok
var d: I1 = i2.m1; // should error
~
!!! error TS2322: Type '(p1?: string) => I1' is not assignable to type 'I1'.
!!! error TS2322: Types of parameters 'p1' and 'p1' are incompatible.
!!! error TS2322: Type 'number' is not assignable to type 'string'.
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