purgo/dist/core.mjs

Zero-config PHI-scrubber for browser and Node.js

// src/core.ts
var BUILT_IN_PATTERNS = {
  // Email addresses
  email: /\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/g,
  // Phone numbers (various formats)
  phone: /(\+\d{1,2}\s?)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}/g,
  // Social Security Numbers
  ssn: /\b\d{3}[-]?\d{2}[-]?\d{4}\b/g,
  // Medical Record Numbers (generic pattern, can be customized)
  mrn: /\b\d{6,10}\b/g,
  // ICD-10 codes
  icd10: /\b[A-Z]\d{2}(\.[A-Z0-9]{1,4})?\b/g
};
var DEFAULT_CENSOR = () => "***";
var globalConfig = {
  patterns: [],
  censor: DEFAULT_CENSOR
};
function initRedactionEngine(options = {}) {
  const patterns = options.patterns || ["email", "phone", "ssn", "mrn", "icd10"];
  const regexPatterns = patterns.map((pattern) => {
    if (typeof pattern === "string") {
      return BUILT_IN_PATTERNS[pattern] || new RegExp(pattern, "g");
    }
    return pattern;
  });
  globalConfig = {
    patterns: regexPatterns,
    censor: options.censor || DEFAULT_CENSOR
  };
}
function redactString(value) {
  if (typeof value !== "string")
    return value;
  let result = value;
  for (const patternTemplate of globalConfig.patterns) {
    const pattern = new RegExp(patternTemplate.source, patternTemplate.flags);
    result = result.replace(pattern, (match) => globalConfig.censor(match));
  }
  return result;
}
function redact(value) {
  if (value === null || value === void 0)
    return value;
  if (typeof value !== "object") {
    return typeof value === "string" ? redactString(value) : value;
  }
  if (Array.isArray(value)) {
    return value.map((item) => redact(item));
  }
  const result = {};
  for (const key in value) {
    if (Object.prototype.hasOwnProperty.call(value, key)) {
      result[key] = redact(value[key]);
    }
  }
  return result;
}
initRedactionEngine();
export {
  BUILT_IN_PATTERNS,
  initRedactionEngine,
  redact,
  redactString
};