french-ssn/dist/src/normalize.js

🇫🇷 A parser / validator for French Social Security Number

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = (ssn, { length = 15 } = {}) => {
    if (typeof ssn === "number") {
        ssn = ssn.toString();
    }
    if (typeof ssn !== "string") {
        throw new Error(`Input must be a string or a ${length} digits number`);
    }
    ssn = ssn.replace(/[^0-9ab]/gi, "");
    if (ssn.length !== length) {
        throw new Error(`Input must be ${length} characters long`);
    }
    if (!/^\d{6}[0-9abAB]\d*$/.test(ssn)) {
        throw new Error("French Social Security Number only allows digits, except for the letters A and B in 7th position");
    }
    return ssn;
};
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