@opentiny/fluent-editor/es/utils/merge.es.js

A rich text editor based on Quill 2.0, which extends rich modules and formats on the basis of Quill. It's powerful and out-of-the-box.

function merge(target, ...sources) {
  if (!sources.length) return target;
  const isObject = (obj) => obj !== null && (typeof obj === "object" || typeof obj === "function");
  const isPlain = (obj) => {
    if (!isObject(obj)) return false;
    const proto = Object.getPrototypeOf(obj);
    return proto === Object.prototype || proto === null;
  };
  for (const src of sources) {
    if (!isObject(src)) continue;
    for (const key in src) {
      if (!Object.prototype.hasOwnProperty.call(src, key)) continue;
      const oldVal = target[key];
      const newVal = src[key];
      if (isPlain(newVal) && (oldVal === void 0 || isPlain(oldVal))) {
        target[key] = merge(oldVal || {}, newVal);
      } else {
        target[key] = newVal;
      }
    }
  }
  return target;
}
export {
  merge
};
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