index.js
function isNumberString(value) {
    let numberReg = /^((-?\d*\.?\d*(?:e[+-]?\d*(?:\d?\.?|\.?\d?)\d*)?)|(0[0-7]+)|(0x[0-9a-f]+))$/i;
    return lodash.isString(value) && !isEmpty(value) && numberReg.test(value);
}
function isNumberString(value) {
    let numberReg = /^((-?\d*\.?\d*(?:e[+-]?\d*(?:\d?\.?|\.?\d?)\d*)?)|(0[0-7]+)|(0x[0-9a-f]+))$/i;
    return lodash.isString(value) && !isEmpty(value) && numberReg.test(value);
}
function isNumberString ( value ) { let numberReg = / ^((-?\d*\.?\d*(?:e[+-]?\d*(?:\d?\.?|\.?\d?)\d*)?)|(0[0-7]+)|(0x[0-9a-f]+))$ / i ; return lodash . isString ( value ) && ! isEmpty ( value ) && numberReg . test ( value ) ; }
Checks if value is a string that contains only numbers

@param {any} value
@returns {boolean}
Checks if value is a string that contains only numbers