symfony31.yaml

services:
    # replace args
    Rector\Core\Rector\Argument\ArgumentDefaultValueReplacerRector:
        $replacesByMethodAndTypes:
            # covers https://github.com/symfony/symfony/blob/3.4/UPGRADE-3.1.md#yaml
            Symfony\Component\Yaml\Yaml:
                parse:
                    1:
                        -
                            before: [false, false, true]
                            after: 'Symfony\Component\Yaml\Yaml::PARSE_OBJECT_FOR_MAP'
                        -
                            before: [false, true]
                            after: 'Symfony\Component\Yaml\Yaml::PARSE_OBJECT'
                        -
                            before: true
                            after: 'Symfony\Component\Yaml\Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE'
                        -
                            before: false
                            after: 0

                dump:
                    3:
                        -
                            before: [false, true]
                            after: 'Symfony\Component\Yaml\Yaml::DUMP_OBJECT'

                        -
                            before: true
                            after: 'Symfony\Component\Yaml\Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE'