assigning decode(someString) to something that expects a string causes es-lint typescript errors "Unsafe assignment of an any value." and "Unsafe call of an any typed value.

[aheggie]

I haven't used many imported libraries with typescript so it is possible that I am making a fundamental typescript error around package imports

To be clear the app compiles and runs correctly, and the entities are in fact being stripped out. That said from my experience of other typed languages I know to take 'any' type seriously.

my use case is fairly simple essentially I am receiving from json a bunch of strings with html entities and working to process them to strings that do not have html entities:

import { decode } from "html-entities";

// this interface describes the json
interface Question {
  category: string;
  type: string;
  difficulty: string;
  //this is type of the string with html entitities in json
  question: string;
  correct_answer: string;
  incorrect_answers: string[];
}

//this is the converted json the app expects
export interface Card {
  category: string;
  //this is the type of the string that should receive the results of decode
  question: string;
  answer: boolean;
  hasBeenAnswered: boolean;
  chosenAnswer?: boolean;
}


const questionToCard = ({
  category,
  question,
  correct_answer,
}: Question): Card => ({
  category: category,
  // the following call to decode works but throws 2 typescript-eslint errors
  question: decode(question),
  answer: correct_answer === "True",
  hasBeenAnswered: false,
})

these are the two errors that are tthrown by typescript-eslint
https://github.com/typescript-eslint/typescript-eslint/blob/v4.16.1/packages/eslint-plugin/docs/rules/no-unsafe-assignment.md

https://github.com/typescript-eslint/typescript-eslint/blob/v4.16.1/packages/eslint-plugin/docs/rules/no-unsafe-call.md

I have read the documentation and searched elsewhere for references but I haven't seen a note about how to use this library with typescript without introducing any type into my codebase.

Have I made some error in importing or using the library? Or is this eslint error to be expected with standard use?

[mdevils]

Hello @aheggie. Your example works perfectly fine on TypeScript Playground: https://www.typescriptlang.org/play?#code/JYWwDg9gTgLgBAbzgEwKYGMJrgXzgMyghDgCIALGEAGwFpUA7GYZ1AZ1IG4Aobgej5wY5YGzjAmqKPgCG6VCnboowAEbsh5BQCs2EBtwkwps+XACKAV3bN9ibnDjoZxgObQAngC44bGCoZXHkcYDzBUHz8AoIcUYHx8YHRLalDI-wkYxwFhUXExUPC4CHxNBSjMuAB3FnI4Sho4RmYW4A0JOF19WIBHaz9gfXTo4KdoKAwYAH0ZBjYqqWHM0YlMKAn0adn5qTYlwIBtAF0eHF4ckTE84QVMBgA3KWNkTr0GMrgZMDAmgA9wzZsbiof7QeBGExyBQAYRkUBeCFizjcnn2WTgFzy1y0QjCChKHwqgU0Ll85AgKReG1QwEeHwmbBSMDEBLQmDQvX6tgYaNG2wWUB8qggEGoqFmo3IMjYACFUIwAIJzAWoZBCkViiVI8lsRXKqQAfnVovFDFOvG4dz8cD6NkGDAAKhBYfC4ABeOAACkRjmRqHcUA8ABpOXb9CHfeNJjN9VAQzgfFYwwwAJQ+F0vN0APi9PqcLn9qPzKMDEYxghuBFF1AgNWJzmo1CEEEU7IUVWgAGsxKpLPBhEQqmIAEy48JsZTAMAwehsahGJrraBAxy2gZDVtYVCetfclNl-mLMbraOHqDut0e0gOqDWUhlqWy+UMJU7CZqggyai6+Mp7hAA

Please check you setup.