{"record":{"id":"cf23b89b689d28f0","repo":"swc-project/swc","slug":"non-space-character-after-body","errorCode":null,"errorMessage":"Non-space character after body","messagePattern":"Non-space character after body","errorType":"validation","errorClass":"Error","httpStatus":null,"severity":"warning","filePath":"crates/swc_html_parser/src/parser/mod.rs","lineNumber":6259,"sourceCode":" //\n // Stop parsing.\n Token::Eof => {\n self.update_end_tag_span(\n self.open_elements_stack.items.last(),\n token_and_info.span,\n );\n self.stopped = true;\n }\n // Anything else\n //\n // Parse error. Switch the insertion mode to \"in body\" and reprocess the token.\n _ => {\n match token {\n // Doctype handled above\n // Comment handled above\n // EOF handled above\n Token::Character { .. } => {\n self.errors.push(Error::new(\n token_and_info.span,\n ErrorKind::NonSpaceCharacterAfterBody,\n ));\n }\n Token::StartTag { tag_name, .. } => {\n self.errors.push(Error::new(\n token_and_info.span,\n ErrorKind::StrayStartTag(tag_name.clone()),\n ));\n }\n Token::EndTag { .. } => {\n self.errors.push(Error::new(\n token_and_info.span,\n ErrorKind::EndTagAfterBody,\n ));\n }\n _ => {\n unreachable!();","sourceCodeStart":6241,"sourceCodeEnd":6277,"githubUrl":"https://github.com/swc-project/swc/blob/5176682b65416c6b5de6b47379ae1588ea3ecb3f/crates/swc_html_parser/src/parser/mod.rs#L6241-L6277","documentation":"A character token that is not whitespace (not TAB/LF/FF/CR/SPACE) was dispatched in the 'after body' insertion mode, i.e. visible text appeared after . The spec says: parse error, switch to 'in body' and reprocess, so the text still ends up appended inside body. The error (NonSpaceCharacterAfterBody) records the misplaced character with its span.","triggerScenarios":"Any non-whitespace text node after the body close tag, e.g. `okoops`. Only the first reprocessed character token reports; the follow-up tokens are then handled in 'in body' mode without error.","commonSituations":"Analytics/tracking snippets or banner text appended after by reverse proxies; string-concatenation page builders that lose ordering; build steps that inject content at 'end of file' rather than 'end of body'.","solutions":["Move the stray text before in the source.","Fix the generator/injector so it inserts content at the end of body, not after the closing tag.","If the markup is third-party and the recovered tree (text inside body) is acceptable, filter ErrorKind::NonSpaceCharacterAfterBody from the errors vec."],"exampleFix":"\ncontent\ntracker-pixel-text\n\n\n\ncontent\ntracker-pixel-text\n\n","handlingStrategy":"validation","validationCode":"// Detect non-whitespace content after the last .\nfn has_text_after(src: &str, close: &str) -> bool {\n let lower = src.to_ascii_lowercase();\n lower.rfind(close)\n .map(|i| lower[i + close.len()..].chars().any(|c| !c.is_ascii_whitespace()))\n .unwrap_or(false)\n}\n\nif has_text_after(&html_src, \"\") { /* fix injector before parsing */ }","typeGuard":"use swc_html_parser::error::{Error, ErrorKind};\n\nfn is_non_space_after_body(err: &Error) -> bool {\n matches!(err.kind(), ErrorKind::NonSpaceCharacterAfterBody)\n}","tryCatchPattern":"let mut errors = Vec::new();\nlet doc = parse_file_as_document(&fm, config, &mut errors)?;\n// Recovery moves the text into body; decide whether that is acceptable.\nif errors.iter().any(is_non_space_after_body) {\n log::warn!(\"text after was relocated into body\");\n}","preventionTips":["Inject content before , never after it.","In CI, assert nothing but whitespace/comments follows the last .","Prefer DOM-level manipulation over string concat when appending nodes."],"tags":["html","parser","swc","text-node","after-body","parse-error"],"backgroundTag":"content-after-body","analyzedSha":"5176682b65416c6b5de6b47379ae1588ea3ecb3f","analyzedAt":"2026-08-17T16:16:52.067Z","contentChangedAt":"2026-08-17T16:16:52.067Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}