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// Copyright Node.js contributors. All rights reserved. MIT License.import { Buffer } from "../buffer.ts";import Readable from "./readable.ts";import type { ReadableOptions } from "./readable.ts";import { ERR_INVALID_ARG_TYPE, ERR_STREAM_NULL_VALUES } from "../_errors.ts";
export default function from(  // deno-lint-ignore no-explicit-any  iterable: Iterable<any> | AsyncIterable<any>,  opts?: ReadableOptions,) {  let iterator:    // deno-lint-ignore no-explicit-any    | Iterator<any, any, undefined>    // deno-lint-ignore no-explicit-any    | AsyncIterator<any, any, undefined>;  if (typeof iterable === "string" || iterable instanceof Buffer) {    return new Readable({      objectMode: true,      ...opts,      read() {        this.push(iterable);        this.push(null);      },    });  }
  if (Symbol.asyncIterator in iterable) {    // deno-lint-ignore no-explicit-any    iterator = (iterable as AsyncIterable<any>)[Symbol.asyncIterator]();  } else if (Symbol.iterator in iterable) {    // deno-lint-ignore no-explicit-any    iterator = (iterable as Iterable<any>)[Symbol.iterator]();  } else {    throw new ERR_INVALID_ARG_TYPE("iterable", ["Iterable"], iterable);  }
  const readable = new Readable({    objectMode: true,    highWaterMark: 1,    ...opts,  });
  // Reading boolean to protect against _read  // being called before last iteration completion.  let reading = false;
  // needToClose boolean if iterator needs to be explicitly closed  let needToClose = false;
  readable._read = function () {    if (!reading) {      reading = true;      next();    }  };
  readable._destroy = function (error, cb) {    if (needToClose) {      needToClose = false;      close().then(        () => queueMicrotask(() => cb(error)),        (e) => queueMicrotask(() => cb(error || e)),      );    } else {      cb(error);    }  };
  async function close() {    if (typeof iterator.return === "function") {      const { value } = await iterator.return();      await value;    }  }
  async function next() {    try {      needToClose = false;      const { value, done } = await iterator.next();      needToClose = !done;      if (done) {        readable.push(null);      } else if (readable.destroyed) {        await close();      } else {        const res = await value;        if (res === null) {          reading = false;          throw new ERR_STREAM_NULL_VALUES();        } else if (readable.push(res)) {          next();        } else {          reading = false;        }      }    } catch (err) {      readable.destroy(err);    }  }  return readable;}