.git/hooks/pre-commit

pre-commit

#!/usr/bin/env perl
use strict;
use warnings;
my $diff = `git diff --cached`;
if ( my ( $ng_word ) = $diff =~ /^\+.*(Dumper|STDERR|alert|console\.log)/m ) {
    print STDERR <<"ABORT";
Bad word '$ng_word' was found. git commit was aborted!
If you believe this commit is OK, use git commit --no-verify to skip this hook.
ABORT
    exit 1;
}
exit 0;