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js: Don't try to run empty scripts

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When you try to run script containing only whitespace, it will return
undefined and doesn't do anything anyway. Let's match NodeJS behavior
and just don't display anything.

This only applies to REPL input and not to modules.
This commit is contained in:
Maciej 2022-03-07 18:11:13 +01:00 • committed by Tim Flynn
parent 0706f0d487
commit efd9c70d94
1 changed files with 3 additions and 1 deletions
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4
Userland/Utilities/js.cpp
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@ -55,6 +55,7 @@
#include <LibJS/Runtime/ShadowRealm.h>
#include <LibJS/Runtime/Shape.h>
#include <LibJS/Runtime/StringObject.h>
#include <LibJS/Runtime/StringPrototype.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
#include <LibJS/Runtime/Temporal/Duration.h>
#include <LibJS/Runtime/Temporal/Instant.h>
@ -1273,8 +1274,9 @@ static void repl(JS::Interpreter& interpreter)
{
while (!s_fail_repl) {
String piece = read_next_piece();
if (piece.is_empty())
if (Utf8View { piece }.trim(JS::whitespace_characters).is_empty())
continue;
repl_statements.append(piece);
parse_and_run(interpreter, piece, "REPL");
}