docs: remove stray err handling in examples and enable lint rule

PR-URL: #11556
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Planeshifter

lib/node_modules/@stdlib/napi/create-int64/README.md

@@ -119,10 +119,6 @@ static napi_value addon( napi_env env, napi_callback_info info ) {
     napi_value value;
     napi_status status = stdlib_napi_create_int64( env, 1, &value );
     assert( status == napi_ok );
-    if ( err != NULL ) {
-        assert( napi_throw( env, err ) == napi_ok );
-        return NULL;
-    }
 
     // ...
 }

lib/node_modules/@stdlib/napi/create-int64/src/main.c

@@ -40,10 +40,6 @@
 *     napi_value value;
 *     napi_status status = stdlib_napi_create_int64( env, 1, &value );
 *     assert( status == napi_ok );
-*     if ( err != NULL ) {
-*         assert( napi_throw( env, err ) == napi_ok );
-*         return NULL;
-*     }
 *
 *     // ...
 * }

lib/node_modules/@stdlib/napi/create-uint64/README.md

@@ -119,10 +119,6 @@ static napi_value addon( napi_env env, napi_callback_info info ) {
     napi_value value;
     napi_status status = stdlib_napi_create_uint64( env, 1, &value );
     assert( status == napi_ok );
-    if ( err != NULL ) {
-        assert( napi_throw( env, err ) == napi_ok );
-        return NULL;
-    }
 
     // ...
 }
@@ -187,6 +183,8 @@ The macro expects the following arguments:
 
 <section class="notes">
 
+-   The generated JavaScript value is a `BigInt` (N-API Version 6+).
+
 </section>
 
 <!-- /.notes -->

lib/node_modules/@stdlib/napi/create-uint64/src/main.c

@@ -40,10 +40,6 @@
 *     napi_value value;
 *     napi_status status = stdlib_napi_create_uint64( env, 1, &value );
 *     assert( status == napi_ok );
-*     if ( err != NULL ) {
-*         assert( napi_throw( env, err ) == napi_ok );
-*         return NULL;
-*     }
 *
 *     // ...
 * }

lib/node_modules/@stdlib/ndarray/colcat/README.md

@@ -111,6 +111,8 @@ The function accepts the following arguments:
 
 ## Examples
 
+<!-- eslint no-undef: "error" -->
+
 ```javascript
 var discreteUniform = require( '@stdlib/random/discrete-uniform' );
 var ndarray2array = require( '@stdlib/ndarray/to-array' );