Chrome getCompletions.js

  (function getCompletions(type) {
    let object;
    if (type === "string") object = new String("");
    else if (type === "number") object = new Number(0);
    else if (type === "bigint") object = Object(BigInt(0));
    else if (type === "boolean") object = new Boolean(false);
    else object = this;
    const result = [];
    try {
      for (let o = object; o; o = Object.getPrototypeOf(o)) {
        if (
          (type === "array" || type === "typedarray") &&
          o === object &&
          o.length > 9999
        )
          continue;
        const group = { items: [], __proto__: null };
        try {
          if (typeof o === "object" && o.constructor && o.constructor.name)
            group.title = o.constructor.name;
        } catch (ee) { }
        result[result.length] = group;
        const names = Object.getOwnPropertyNames(o);
        const isArray = Array.isArray(o);
        for (let i = 0; i < names.length && group.items.length < 10000; ++i) {
          if (isArray && /^[0-9]/.test(names[i])) continue;
          group.items[group.items.length] = names[i];
        }
      }
    } catch (e) { }
    return result;
  });