| 1 | 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SourceMapConsumer(sourceMapFileContent);\n } else {\n // Try to read a source map from a 'sourceMappingURL' comment.\n let converter = convert.fromSource(codeFileContent);\n\n if (!converter && !Buffer.isBuffer(codeFile)) {\n converter = convert.fromMapFileSource(codeFileContent, path.dirname(codeFile));\n }\n\n if (!converter) {\n throw new AppError({ code: 'NoSourceMap' });\n }\n\n consumer = await new SourceMapConsumer(converter.toJSON());\n }\n\n if (!consumer) {\n throw new AppError({ code: 'NoSourceMap' });\n }\n\n return {\n consumer,\n codeFileContent,\n };\n}\n\nconst COMMENT_REGEX = convert.commentRegex;\nconst MAP_FILE_COMMENT_REGEX = convert.mapFileCommentRegex;\n\n/**\n * Extract either source map comment/file\n */\nfunction getSourceMapComment(fileContent: string): string {\n const sourceMapComment =\n getFirstRegexMatch(COMMENT_REGEX, fileContent) ||\n getFirstRegexMatch(MAP_FILE_COMMENT_REGEX, fileContent) ||\n '';\n\n // Remove trailing EOLs\n return sourceMapComment.trim();\n}\n\ninterface ComputeFileSizesContext {\n generatedLine: number;\n generatedColumn: number;\n line: string;\n source: string | null;\n consumer: Consumer;\n mapReferenceEOLSources: Set<string>;\n}\n\n/**\n * Check if source map references EOL (see https://github.com/microsoft/TypeScript/issues/34695)\n */\nfunction isReferencingEOL(context: ComputeFileSizesContext, maxColumnIndex: number): boolean {\n const { generatedLine, generatedColumn, source, consumer } = context;\n\n // Ignore difference more than EOL max length (\\r\\n)\n if (maxColumnIndex - generatedColumn > 2) {\n return false;\n }\n\n // Ignore mapping w/o source\n if (!source) {\n return false;\n }\n\n // Don't check the same source twice. 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NO_SOURCE_KEY : source,\n });\n\n mappingRanges[lineIndex] = lineRanges;\n });\n\n let files: FileDataMap = {};\n let mappedBytes = 0;\n\n // To account unicode measure byte length rather than symbols count\n const getSize = options.gzip ? gzipSize.sync : Buffer.byteLength;\n\n mappingRanges.forEach((lineRanges, lineIndex) => {\n const line = lines[lineIndex];\n const mergedRanges = mergeRanges(lineRanges);\n\n mergedRanges.forEach(({ start, end, source }) => {\n const rangeString = line.substring(start, end + 1);\n const rangeByteLength = getSize(rangeString);\n\n if (!files[source]) {\n files[source] = { size: 0 };\n }\n\n files[source].size += rangeByteLength;\n\n mappedBytes += rangeByteLength;\n });\n\n if (coverageRanges) {\n files = setCoveredSizes(line, files, mergedRanges, coverageRanges[lineIndex]);\n }\n });\n\n const sourceMapCommentBytes = getSize(sourceMapComment);\n const eolBytes = getOccurrencesCount(eol, fileContent) * Buffer.byteLength(eol);\n const totalBytes = getSize(fileContent);\n let unmappedBytes: number | undefined;\n\n if (!options.excludeSourceMapComment) {\n files[SOURCE_MAP_COMMENT_KEY] = { size: sourceMapCommentBytes };\n }\n\n if (!options.onlyMapped) {\n unmappedBytes = totalBytes - mappedBytes - sourceMapCommentBytes - eolBytes;\n files[UNMAPPED_KEY] = { size: unmappedBytes };\n }\n\n if (eolBytes > 0) {\n files[EOL_KEY] = { size: eolBytes };\n }\n\n return {\n ...(options.excludeSourceMapComment\n ? { totalBytes: totalBytes - sourceMapCommentBytes }\n : { totalBytes }),\n mappedBytes,\n ...(!options.onlyMapped && { unmappedBytes }),\n eolBytes,\n sourceMapCommentBytes,\n files,\n };\n}\n\nexport function adjustSourcePaths(fileSizeMap: FileDataMap, options: ExploreOptions): FileDataMap {\n if (!options.noRoot) {\n const prefix = getCommonPathPrefix(Object.keys(fileSizeMap));\n const length = prefix.length;\n\n if (length) {\n fileSizeMap = mapKeys(fileSizeMap, (size, source) => source.slice(length));\n }\n }\n\n if (options.replaceMap) {\n fileSizeMap = Object.entries(options.replaceMap).reduce((result, [before, after]) => {\n const regexp = new RegExp(before, 'g');\n\n return mapKeys(result, (size, source) => source.replace(regexp, after));\n }, fileSizeMap);\n }\n\n return fileSizeMap;\n}\n"]} |