diff --git a/doc/api/n-api.md b/doc/api/n-api.md
index 26ca5dc83fb34f..8b8f77f9d6a1f8 100644
--- a/doc/api/n-api.md
+++ b/doc/api/n-api.md
@@ -3070,13 +3070,18 @@ napi_status napi_get_buffer_info(napi_env env,
 ```
 
 * `[in] env`: The environment that the API is invoked under.
-* `[in] value`: `napi_value` representing the `node::Buffer` being queried.
-* `[out] data`: The underlying data buffer of the `node::Buffer`.
-  If length is `0`, this may be `NULL` or any other pointer value.
+* `[in] value`: `napi_value` representing the `node::Buffer` or `Uint8Array`
+  being queried.
+* `[out] data`: The underlying data buffer of the `node::Buffer` or
+  `Uint8Array`. If length is `0`, this may be `NULL` or any other pointer value.
 * `[out] length`: Length in bytes of the underlying data buffer.
 
 Returns `napi_ok` if the API succeeded.
 
+This method returns the identical `data` and `byte_length` as
+[`napi_get_typedarray_info`][]. And `napi_get_typedarray_info` accepts a
+`node::Buffer` (a Uint8Array) as the value too.
+
 This API is used to retrieve the underlying data buffer of a `node::Buffer`
 and its length.
 
@@ -3827,12 +3832,14 @@ napi_status napi_is_buffer(napi_env env, napi_value value, bool* result)
 
 * `[in] env`: The environment that the API is invoked under.
 * `[in] value`: The JavaScript value to check.
-* `[out] result`: Whether the given `napi_value` represents a `node::Buffer`
-  object.
+* `[out] result`: Whether the given `napi_value` represents a `node::Buffer` or
+  `Uint8Array` object.
 
 Returns `napi_ok` if the API succeeded.
 
-This API checks if the `Object` passed in is a buffer.
+This API checks if the `Object` passed in is a buffer or Uint8Array.
+[`napi_is_typedarray`][] should be preferred if the caller needs to check if the
+value is a Uint8Array.
 
 ### `napi_is_date`
 
@@ -6502,11 +6509,13 @@ the add-on's file name during loading.
 [`napi_get_last_error_info`]: #napi_get_last_error_info
 [`napi_get_property`]: #napi_get_property
 [`napi_get_reference_value`]: #napi_get_reference_value
+[`napi_get_typedarray_info`]: #napi_get_typedarray_info
 [`napi_get_value_external`]: #napi_get_value_external
 [`napi_has_property`]: #napi_has_property
 [`napi_instanceof`]: #napi_instanceof
 [`napi_is_error`]: #napi_is_error
 [`napi_is_exception_pending`]: #napi_is_exception_pending
+[`napi_is_typedarray`]: #napi_is_typedarray
 [`napi_make_callback`]: #napi_make_callback
 [`napi_open_callback_scope`]: #napi_open_callback_scope
 [`napi_open_escapable_handle_scope`]: #napi_open_escapable_handle_scope