nl_tokens: Cleans up webpack error messages . eslint - disable - next - line no - unused - vars
pl_tokens: function formatMessage ( message , isError ) { let <mask> = message . split ( '\n' ) // Strip Webpack-added headers off errors/warnings // https://github.com/webpack/webpack/blob/master/lib/ModuleError.js lines = lines . filter ( line => ! / Module [A-z ]+\(from / . test ( line ) ) // Transform parsing error into syntax error // TODO: move this to our ESLint formatter? lines = lines . map ( line => { const parsingError = / Line (\d+):(?:(\d+):)?\s*Parsing error: (.+)$ / . exec ( line ) if ( ! parsingError ) { return line } const [ , errorLine , errorColumn , errorMessage ] = parsingError return ` ${ friendlySyntaxErrorLabel } ${ errorMessage } ${ errorLine } ${ errorColumn } ` } ) message = lines . join ( '\n' ) // Smoosh syntax errors (commonly found in CSS) message = message . replace ( / SyntaxError\s+\((\d+):(\d+)\)\s*(.+?)\n / g , ` ${ friendlySyntaxErrorLabel } \n ` ) // Remove columns from ESLint formatter output (we added these for more // accurate syntax errors) message = message . replace ( / Line (\d+):\d+: / g , 'Line $1:' ) // Clean up export errors message = message . replace ( / ^.*export '(.+?)' was not found in '(.+?)'.*$ / gm , ` ` ) message = message . replace ( / ^.*export 'default' \(imported as '(.+?)'\) was not found in '(.+?)'.*$ / gm , ` ` ) message = message . replace ( / ^.*export '(.+?)' \(imported as '(.+?)'\) was not found in '(.+?)'.*$ / gm , ` ` ) lines = message . split ( '\n' ) // Remove leading newline if ( lines . length > 2 && lines [ 1 ] . trim ( ) === '' ) { lines . splice ( 1 , 1 ) } // Clean up file name lines [ 0 ] = lines [ 0 ] . replace ( / ^(.*) \d+:\d+-\d+$ / , '$1' ) // Cleans up verbose "module not found" messages for files and packages. if ( lines [ 1 ] && lines [ 1 ] . indexOf ( 'Module not found: ' ) === 0 ) { lines = [ lines [ 0 ] , lines [ 1 ] . replace ( 'Error: ' , '' ) . replace ( 'Module not found: Cannot find file:' , 'Cannot find file:' ) ] } message = lines . join ( '\n' ) // Internal stacks are generally useless so we strip them... with the // exception of stacks containing `webpack:` because they're normally // from user code generated by Webpack. For more information see // https://github.com/facebook/create-react-app/pull/1050 message = message . replace ( / ^\s*at\s((?!webpack:).)*:\d+:\d+[\s)]*(\n|$) / gm , '' ) // at ... ...:x:y message = message . replace ( / ^\s*at\s<anonymous>(\n|$) / gm , '' ) // at <anonymous> lines = message . split ( '\n' ) // Remove duplicated newlines lines = lines . filter ( ( line , index , arr ) => index === 0 || line . trim ( ) !== '' || line . trim ( ) !== arr [ index - 1 ] . trim ( ) ) // Reassemble the message message = lines . join ( '\n' ) return message . trim ( ) }