Arrow functions breaking for angular project in IE

[rdandnayak]

while running an angular project i face this problem

and the reason is

seems like Arrow functions are not understandable by IE11

[sindresorhus]

Duplicate of #20

[cassmtnr]

Alternative function for Frontend projects:

function pascalToCamelCase(input) {
    let output, inputKey, outputKey, value;

    if (input instanceof Array) {
        return input.map((v) => (typeof v === 'object' ? pascalToCamelCase(v) : v));
    } else {
        output = {};
        for (inputKey in input) {
            if (input.hasOwnProperty(inputKey)) {
                outputKey = (
                    inputKey.charAt(0).toLowerCase() + inputKey.slice(1) ||
                    inputKey
                ).toString();

                value = input[inputKey];
                if (
                    value instanceof Array ||
                    (value !== null && value.constructor === Object)
                ) {
                    value = pascalToCamelCase(value);
                }
                output[outputKey] = value;
            }
        }
    }
    return output;
}

export default pascalToCamelCase;