FacetWP: Register facets programmatically (via code)

facets.php

<?php
/* updated 2022-09-21 */

$facets = [
    [
        'name'            => 'test_checkboxes',
        'label'           => 'Test checkboxes',
        'type'            => 'checkboxes',
        'source'          => 'post_type',
        'parent_term'     => '',
        'hierarchical'    => 'no',
        'show_expanded'   => 'no',
        'ghosts'          => 'no',
        'preserve_ghosts' => 'no',
        'operator'        => 'and',
        'orderby'         => 'count',
        'count'           => '10',
        'soft_limit'      => '5'
    ],
    [
        'name'         => 'test_dropdown',
        'label'        => 'Test dropdown',
        'type'         => 'dropdown',
        'source'       => 'post_type',
        'parent_term'  => '',
        'hierarchical' => 'no',
        'orderby'      => 'count',
        'count'        => '20',
        'label_any'    => 'Any'
    ],
    [
        'name'            => 'test_fselect',
        'label'           => 'Test fSelect',
        'type'            => 'fselect',
        'source'          => 'post_type',
        'parent_term'     => '',
        'hierarchical'    => 'no',
        'ghosts'          => 'no',
        'preserve_ghosts' => 'no',
        'operator'        => 'and',
        'orderby'         => 'count',
        'count'           => '10',
        'label_any'       => 'Any',
        'multiple'        => 'no'
    ],
    [
        'name'            => 'test_hierarchy',
        'label'           => 'Test hierarchy',
        'type'            => 'checkboxes',
        'source'          => 'post_type',
        'parent_term'     => '',
        'hierarchical'    => 'no',
        'show_expanded'   => 'no',
        'ghosts'          => 'no',
        'preserve_ghosts' => 'no',
        'operator'        => 'and',
        'orderby'         => 'count',
        'count'           => '10',
        'soft_limit'      => '5'
    ],
    [
        'name'          => 'test_search',
        'label'         => 'Test search',
        'type'          => 'search',
        'source'        => 'post_type',
        'search_engine' => '',
        'placeholder'   => '',
        'auto_refresh'  => 'no'
    ],
    [
        'name'        => 'test_autocomplete',
        'label'       => 'Test autocomplete',
        'type'        => 'autocomplete',
        'source'      => 'post_type',
        'placeholder' => ''
    ],
    [
        'name'         => 'test_slider',
        'label'        => 'Test slider',
        'type'         => 'slider',
        'source'       => 'post_type',
        'compare_type' => '',
        'prefix'       => '',
        'suffix'       => '',
        'format'       => '0,0',
        'step'         => '1',
        'source_other' => ''
    ],
    [
        'name'         => 'test_date_range',
        'label'        => 'Test date range',
        'type'         => 'date_range',
        'source'       => 'post_type',
        'compare_type' => '',
        'fields'       => 'both',
        'format'       => '',
        'source_other' => ''
    ],
    [
        'name'         => 'test_number_range',
        'label'        => 'Test number range',
        'type'         => 'number_range',
        'source'       => 'post_type',
        'fields'       => 'both',
        'compare_type' => '',
        'source_other' => ''
    ],
    [
        'name'           => 'test_proximity',
        'label'          => 'Test proximity',
        'type'           => 'proximity',
        'source'         => 'post_type',
        'unit'           => 'mi',
        'radius_ui'      => 'dropdown',
        'radius_options' => '10, 25, 50, 100, 250',
        'radius_min'     => '1',
        'radius_max'     => '50',
        'radius_default' => '25',
        'source_other'   => ''
    ],
    [
        'name'            => 'test_radio',
        'label'           => 'Test radio',
        'type'            => 'radio',
        'source'          => 'post_type',
        'parent_term'     => '',
        'ghosts'          => 'no',
        'preserve_ghosts' => 'no',
        'operator'        => 'or',
        'orderby'         => 'count',
        'count'           => '20'
    ],
    [
        'name'   => 'test_star_rating',
        'label'  => 'Test star rating',
        'type'   => 'rating',
        'source' => 'post_type'
    ],
    [
        "label"          => "Load More",
        "name"           => "loadmore",
        "type"           => "pager",
        "pager_type"     => "load_more",
        "load_more_text" => "Load more...",
        "loading_text"   => "Fetching...",
    ],
];