Module:If preview/configuration
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--[[ We perform the actual check for whether this is a preview here since preprocessing is relatively expensive. ]] local frame = mw.getCurrentFrame() local function is_preview() local revision_id = frame:preprocess('{{REVISIONID}}') -- {{REVISIONID}} is usually the empty string when previewed. -- I don't know why we're checking for nil but hey, maybe someday things -- would have broken return revision_id == nil or revision_id == '' end local function templatestyles() return frame:extensionTag{ name = 'templatestyles', args = { src = 'Module:If preview/styles.css' } } end return { preview = is_preview(), templatestyles = templatestyles(), warning_infrastructure = '%s<div class="preview-warning"><strong>Preview warning:</strong> %s</div>', missing_warning = 'The template has no warning text. Please add a warning.' }