Reports

You could try using Regex to 'test' the string, since this falls into that category.

type BinaryString = `${string & { __brand: "{0|1}*" }}`;

function assertBinaryString(value: string): BinaryString {
    const binaryRegex = /^[01]*$/;
    if (binaryRegex.test(value)) {
        return value as BinaryString;
    } else {
        throw new Error("Invalid binary string format");
    }
}

let validDate: BinaryString = assertBinaryString("010101");
console.log(validDate); // Output : 010101
let invalidDate: BinaryString = assertBinaryString("random");
console.log(invalidDate) // Output : Error

Source: How to Define a Regex-Matched String Type in TypeScript ?

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