Answers for "(parameter) key: string element implicitly has an 'any' type because index expression is not of type 'number'.ts(7015)"

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 '{}'.ts(7053)

//This will fail typecheck
const map = {};
map[someString] = "hello";

//This will pass typecheck
const map: {[key:string]: string} = {};
map[someString] = "hello";

Element implicitly has an 'any' type because index expression is not of type 'number'

{
  ...
  "suppressImplicitAnyIndexErrors": true,
  ...
}