wildcard.ts

// polyfill for RegExp.escape
if(!RegExp.escape){
    RegExp.escape = function(s){
      return String(s).replace(/[\\^$*+?.()|[\]{}]/g, '\\$&');
    };
}

function wildcard(pattern: string) {
    let regex = new RegExp(pattern.split("*").map(RegExp.escape).join(".*"));
    return (value: string) => {
        let result = regex.test(value);
        console.log(pattern, value, result);
        return result;
    };
}

function go(testval: string) {
    wildcard("")(testval);
    wildcard("123456")(testval);
    wildcard("*")(testval);
    wildcard("*23456")(testval);
    wildcard("12345*")(testval);
    wildcard("*34*")(testval);
    wildcard("*123456*")(testval);
    wildcard("123*456")(testval);
    wildcard("1.2*")(testval);
}

go("123456");
go("12345");
go("23456");
go("1.2345");