ts-simple-mapper/dist/index.js

A lightweight utility for mapping object properties between different shapes

// src/index.ts
function simpleMap(source, options = {}) {
  const { exclude = [], transforms = {}, fieldMappings = {} } = options;
  const result = {};
  for (const sourceKey in source) {
    if (Object.prototype.hasOwnProperty.call(source, sourceKey)) {
      if (exclude.includes(sourceKey)) continue;
      const targetKey = Object.entries(fieldMappings).find(([_, value2]) => value2 === sourceKey)?.[0] || sourceKey;
      const value = source[sourceKey];
      if (transforms && targetKey in transforms) {
        const transform = transforms[targetKey];
        if (typeof transform === "function") {
          result[targetKey] = transform(cloneValue(value));
        } else if (typeof transform === "object" && transform !== null && typeof value === "object" && value !== null) {
          result[targetKey] = simpleMap(value, { transforms: transform });
        } else {
          result[targetKey] = cloneValue(value);
        }
      } else {
        result[targetKey] = cloneValue(value);
      }
    }
  }
  return result;
}
function cloneValue(value, seen = /* @__PURE__ */ new WeakSet()) {
  if (value === null || typeof value !== "object") {
    return value;
  }
  if (seen.has(value)) {
    throw new Error("Circular reference detected during deep cloning");
  }
  seen.add(value);
  if (Array.isArray(value)) {
    return value.map((item) => cloneValue(item, seen));
  }
  if (value instanceof Date) {
    return new Date(value);
  }
  const result = {};
  for (const key in value) {
    if (Object.prototype.hasOwnProperty.call(value, key)) {
      result[key] = cloneValue(value[key], seen);
    }
  }
  return result;
}
export {
  simpleMap
};