Product Comparison liquid file linked from: https://support.boldcommerce.com/hc/en-us/articles/210227183-Product-Comparison-Install-Instructions

bold-compare-init.liquid

{{ 'bold-compare.css' | asset_url | stylesheet_tag }}

<script>
    var BOLD = BOLD || {};
    BOLD.Compare = BOLD.Compare || {
        specs_size: {{bold-compare-init.metafields.bold_spec | size}},
        language: {{shop.metafields.bold_compare.language | json}},
        display: {{shop.metafields.bold_compare.display | json}},
        default_product_image: "{{ 'no-image.gif' | img_url: 'thumb' }}"
    };
</script>

{{ 'bold-compare.js' | asset_url | script_tag }}