Typescript type signature function array of objects parameter

Question

What is the syntax to define onChange in this interface:

interface myInterface{
   data: Type1
   onChange : ({field: string, value: any}[]) => void
}

It gives me compile error on '=>' (; expected) I want to say onChange receives an array of field-value pair and return type is void. What is the syntax?

First you need a name for the parameter: (arr: {...}[]). Then either pick arrow prop or method syntax, not both (onChange(...): void or onChange: (...) => void. — jonrsharpe
– jonrsharpe, Commented Apr 30, 2020 at 19:12

Kirill Skomarovskiy · Accepted Answer · 2020-04-30 19:13:44Z

2

Your forgot about :

interface myInterface{
  data: Type1
  onChange: (arr: {field: string, value: any}[]) => void
}

edited Apr 30, 2020 at 19:13

answered Apr 30, 2020 at 19:12

Kirill Skomarovskiy

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