At the time of this question String.prototype.at
is not implemented in all browsers.
I would like to use the at
function on the String prototype within a React app that uses babel to transform modern ecmascript into older more browser compatible versions of javascript.
I have been unsuccessful in finding a babel plugin that would do this for me.
Is there a @babel/plugin that will transform the String prototype at
function down to more browser compatible ES5 javascript?
String.prototype.at
is equal this function
let text = "hello, how are you";
function at(a, b) {
return a.charAt(b < 0 ? a.length-Math.abs(b) : b);
}
console.log(at(text, -3));
console.log(text.at(-3));
Babel is for syntax-level transformations, not browser API polyfills.
You can consider using a polyfill service like Polyfill.io , or alternatively, simply use the polyfill code from the relevant proposal .
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