TypeScript – Element implicitly has an ‘any’ type because expression of type ‘string’ can’t be used to index type

by

You can declare colors as any to tell TypeScript to get off your back on this one (aka explicit any):

const color : any = {
    red: null,
    green: null,
    blue: null
};

But if possible, strong typing is preferable:

const color : { [key: string]: any } = {
    red: null,
    green: null,
    blue: null
};

More information on indexing in TypeScript: Index Signatures

EDIT: In this answer to a similar question, the author suggest using a Map<,> — if that fits your use-case.

More Related Contents:

  1. How do I return the response from an Observable/http/async call in angular?
  2. How to load external scripts dynamically in Angular?
  3. Property ‘…’ has no initializer and is not definitely assigned in the constructor
  4. What is TypeScript and why would I use it in place of JavaScript? [closed]
  5. Calling webpacked code from outside (HTML script tag)
  6. Angular: Can’t find Promise, Map, Set and Iterator
  7. Typescript recursive function composition
  8. typescript – cloning object
  9. Angular 2 router event listener
  10. Angular2 component’s “this” is undefined when executing callback function
  11. Typescript: deep keyof of a nested object, with related type
  12. What’s the difference between “declare class” and “interface” in TypeScript
  13. Load existing components dynamically Angular 2 Final Release
  14. Correct way Provide DomSanitizer to Component with Angular 2 RC6
  15. Angular 2 typescript invoke javascript function
  16. Why does ‘instanceof’ in TypeScript give me the error “‘Foo’ only refers to a type, but is being used as a value here.”?
  17. How can I use optional chaining with arrays and functions?
  18. spread operator vs array.concat()
  19. typescript: error TS2693: ‘Promise’ only refers to a type, but is being used as a value here
  20. Angular interceptor exclude specific urls
  21. How can I loop through enum values for display in radio buttons? [duplicate]
  22. TypeScript enum to object array
  23. How to iterate using ngFor loop Map containing key as string and values as map iteration
  24. How do I split a TypeScript class into multiple files?
  25. Mocking dayjs extend
  26. TypeScript TS7015: Element implicitly has an ‘any’ type because index expression is not of type ‘number’
  27. binding data to angular checkbox
  28. Determine if a CSS class exists with Javascript
  29. How to prevent Next.js from instantiating a singleton class/object multiple times?
  30. Declare an array in TypeScript

Leave a Comment