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signatureLengthMismatchCall.ts(5,15): error TS2345: Argument of type '(a: number, b: number) => void' is not assignable to parameter of type '(a: number) => void'.
Target signature provides too few arguments. Expected 2 or more, but got 1.
==== signatureLengthMismatchCall.ts (1 errors) ====
function takesCallback(fn: (a: number) => void) {
// ...
}
takesCallback((a: number, b: number) => {});
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '(a: number, b: number) => void' is not assignable to parameter of type '(a: number) => void'.
!!! error TS2345: Target signature provides too few arguments. Expected 2 or more, but got 1.
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