const smallWords =
/^(a|an|and|as|at|but|by|en|for|if|in|nor|of|on|or|per|the|to|vs?\.?|via)$/i;
function toTitleCase(string) {
return string
.toString()
.trim()
.replace(/[A-Za-z0-9\u00C0-\u00FF]+[^\s-]*/g, (match, index, title) => {
if (
index > 0 &&
index + match.length !== title.length &&
match.search(smallWords) > -1 &&
title.charAt(index - 2) !== ":" &&
(title.charAt(index + match.length) !== "-" ||
title.charAt(index - 1) === "-") &&
title.charAt(index - 1).search(/[^\s-]/) < 0
) {
return match.toLowerCase();
}
if (match.substr(1).search(/[A-Z]|\../) > -1) {
return match;
}
return match.charAt(0).toUpperCase() + match.substr(1);
});
}
// See if s could be an email address. We don't want to send personal data like email.
// https://support.google.com/analytics/answer/2795983?hl=en
function mightBeEmail(s) {
// There's no point trying to validate rfc822 fully, just look for ...@...
return typeof s === "string" && s.indexOf("@") !== -1;
}
const redacted = "REDACTED (Potential Email Address)";
function redactEmail(string) {
if (mightBeEmail(string)) {
console.warn("This arg looks like an email address, redacting.");
return redacted;
}
return string;
}
export default function format(
s = "",
titleCase = true,
redactingEmail = true
) {
let _str = s || "";
if (titleCase) {
_str = toTitleCase(s);
}
if (redactingEmail) {
_str = redactEmail(_str);
}
return _str;
}