CODEWITHSUNDEEP
typescript
nick
nick

Reputation: 3239

Typescript: “not assignable to parameter of type never” error

I got this code:

blockingFiles: []; //this is on the class


//this is inside a function of the class
this.blockingFiles = [];
this.blockingFiles.push({file: blockingFile, id: fileId});

But I'm getting an error on file and id inside the object I push into the array.

Upvotes: 0

Views: 761

Answers (1)

Bruno Monteiro
Bruno Monteiro

Reputation: 4519

When declaring your blockingFiles as an empty array, you don't really specify the type of the array elements, that why you get the error.

One solution is to define the Interface of your object (the one that contains "file" and "id" keys) and then declare your blockingFiles variable as an array of that object.

You could do something like this:

interface IBlockingFiles {
    file: string; // Replace the type here if it make sense to your code
    id: string; // Replace the type here if it make sense to your code
}

blockingFiles: IBlockingFiles[];

Upvotes: 2

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