streams: add null check in Readable.from

Throws `ERR_STREAM_NULL_VALUES` error if a null value is passed to
`Readable.from`. Also added docs for the same.

Fixes: nodejs#32845

doc/api/stream.md

@@ -1677,7 +1677,7 @@ added:
 -->
 
 * `iterable` {Iterable} Object implementing the `Symbol.asyncIterator` or
-  `Symbol.iterator` iterable protocol.
+  `Symbol.iterator` iterable protocol. Throws if a null value is passed.
 * `options` {Object} Options provided to `new stream.Readable([options])`.
   By default, `Readable.from()` will set `options.objectMode` to `true`, unless
   this is explicitly opted out by setting `options.objectMode` to `false`.

lib/internal/streams/from.js

@@ -7,7 +7,8 @@ const {
 const { Buffer } = require('buffer');
 
 const {
-  ERR_INVALID_ARG_TYPE
+  ERR_INVALID_ARG_TYPE,
+  ERR_STREAM_NULL_VALUES
 } = require('internal/errors').codes;
 
 function from(Readable, iterable, opts) {
@@ -48,10 +49,13 @@ function from(Readable, iterable, opts) {
       const { value, done } = await iterator.next();
       if (done) {
         readable.push(null);
-      } else if (readable.push(await value)) {
-        next();
       } else {
-        reading = false;
+        if (value == null) throw new ERR_STREAM_NULL_VALUES();
+        if (readable.push(await value)) {
+          next();
+        } else {
+          reading = false;
+        }
       }
     } catch (err) {
       readable.destroy(err);