/TypeScript/Element implicitly has an 'any' type because expression of type 'string' can't be used to index type

Element implicitly has an 'any' type because expression of type 'string' can't be used to index type

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";

Source: stackoverflow.com

Element implicitly has an 'any' type because expression of type 'string' can't be used to index type

interface IObjectKeys {
  [key: string]: string | number;
}

interface IDevice extends IObjectKeys {
  id: number;
  room_id: number;
  name: string;
  type: string;
  description: string;
}

Source: stackoverflow.com

Element implicitly has an 'any' type because expression of type 'string' can't be used to index type

tsconfig.json

 "compilerOptions": {
   	...
    "noImplicitReturns": true,
    "noImplicitAny": false,
    ...
 }

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 '{ develop: string; staging: string; production: string; }'.ts(7053)

const DNATranscriber = {
    G: 'C',
    C: 'G',
    T: 'A',
    A: 'U'
};

export default class Transcriptor {
    toRna(dna: string) {
        const codons = [...dna];
        if (!isValidSequence(codons)) {
            throw Error('invalid sequence');
        }
        const transcribedRNA = codons.map(codon => DNATranscriber[codon]);
        return transcribedRNA;
    }
}

function isValidSequence(values: string[]): values is Array<keyof typeof DNATranscriber> {
    return values.every(isValidCodon);
}
function isValidCodon(value: string): value is keyof typeof DNATranscriber {
    return value in DNATranscriber;
}

Source: stackoverflow.com

Similar codes

0 vote114 views1 answer
Linux shell loop through all inputs except last
TypeScript
1 vote110 views1 answer
Serenity.-is add column picker button
TypeScript
0 vote111 views1 answer
Counts of unique values in rows of given 2D array numpy
TypeScript
0 vote85 views1 answer
How to list elements of an array C#
TypeScript
2 votes109 views1 answer
How to delete all elements from hashmap in java except one
TypeScript
2 votes61 views2 answers
Typescript array insert at index
TypeScript
1 vote108 views2 answers
Typescript formik useFormik
TypeScript
1 vote99 views1 answer
What is endurance testing
TypeScript
0 vote96 views1 answer
Typescript import rename
TypeScript
1 vote114 views2 answers
Clipping input data to the valid range for imshow with RGB data ([0..1] for floats or [0..255] for integers)
TypeScript