Issue in specify type for object in typescript

Question

I have an set of data for which I need to specify type in typescript (type any is not recommended). 'xyzzy': (2) [Array(4), 1],

I get error when i specify its type as object. Element implicitly has an 'any' type because expression of type 'string' can't be used to index type '{}'. No index signature with a parameter of type 'string' was found on type '{}'.

For my data, i am getting key as string (the label and color) — Harry
– Harry, Commented Sep 30, 2021 at 12:45

Arseniy Prosvirnin · Accepted Answer · 2021-09-30 12:44:42Z

1

You can specify new type with type keyword;

type MyType = {
  xyzzy: [number[], number],
  abs: [number[], number]
}

And then use this declaration

const something: MyType = {
  xyzzy: [[0, 1, 2, 3], 1],
  abs: [[0, 1, 2, 3], 0],
}

answered Sep 30, 2021 at 12:44

Arseniy Prosvirnin

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2 Comments

Harry Over a year ago

How can i specify the value or write exactly, if i am getting data object as props from other component. Currently i am specifying it in my interface like : interface legendProps { data: any } i need to get ride of any here

Harry Over a year ago

Also can anybody tell me what will be type of this: let labelFormat: any = d3.format(".01f"); Now i have given any (which is not recommended)

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