UNPKG

13.4 kBSource Map (JSON)View Raw
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{ URL } from 'url';\n\nimport { getFileContent, detectEOL } from './helpers';\nimport { AppError } from './app-error';\n\nimport type { Bundle, Coverage, ColumnsRange, MappingRange, FileDataMap } from './types';\n\n/**\n * Convert one-line coverage ranges (exclusive) into per line ranges (inclusive)\n */\nfunction convertRangesToLinesRanges(coverage: Coverage): ColumnsRange[][] {\n const { ranges, text } = coverage;\n\n const eol = detectEOL(text);\n const eolLength = eol.length;\n const lines = text.split(eol);\n\n // Current line offset\n let offset = 0;\n\n const lineRanges = lines.map((line) => {\n const lineLength = line.length;\n\n if (lineLength === 0) {\n return [];\n }\n\n // Exclusive line start/end\n const lineStart = offset;\n const lineEnd = offset + lineLength;\n\n const lineRanges = ranges.reduce<ColumnsRange[]>((result, { start, end }) => {\n // Inclusive range start/end within the line\n const startIndex = start - lineStart;\n const endIndex = end - lineStart - 1;\n const lineEndIndex = lineLength - 1;\n\n if (start <= lineStart && lineEnd <= end) {\n // Range includes line range\n result.push({ start: 0, end: lineEndIndex });\n } else if (lineStart <= start && end <= lineEnd) {\n // Line range includes range\n result.push({ start: startIndex, end: endIndex });\n } else if (lineStart <= start && start <= lineEnd) {\n // Range starts within line range\n result.push({ start: startIndex, end: lineEndIndex });\n } else if (lineStart <= end && end <= lineEnd) {\n // Range ends within line range\n result.push({ start: 0, end: endIndex });\n }\n\n return result;\n }, []);\n\n // Move to next line jumping over EOL character\n offset = lineEnd + eolLength;\n\n return lineRanges;\n });\n\n return lineRanges;\n}\n\nconst PATH_SEPARATOR_REGEX = /[/\\\\]/;\n\nfunction getPathParts(path: string): string[] {\n return path.split(PATH_SEPARATOR_REGEX).filter(Boolean);\n}\n\n/**\n * Match coverages' ranges to bundles by comparing coverage URL and bundle filename\n */\nexport function addCoverageRanges(bundles: Bundle[], coverageFilename?: string): Bundle[] {\n if (!coverageFilename) {\n return bundles;\n }\n\n try {\n const coverages: Coverage[] = JSON.parse(getFileContent(coverageFilename));\n\n const bundlesPaths = bundles.reduce<[string[], number][]>((result, { code }, index) => {\n if (!Buffer.isBuffer(code)) {\n result.push([getPathParts(code).reverse(), index]);\n }\n\n return result;\n }, []);\n\n coverages\n // pathname contains filename\n .map(({ url }) => getPathParts(new URL(url).pathname).reverse())\n .forEach((partsA, coverageIndex) => {\n // Exclude coverages for inlined code (URL doesn't contain a filename)\n if (!partsA.length) return;\n let matchingBundles = [...bundlesPaths];\n\n // Start from filename and go up to path root\n for (let i = 0; i < partsA.length; i++) {\n matchingBundles = matchingBundles.filter(\n ([partsB]) => i < partsB.length && partsB[i] === partsA[i]\n );\n\n // Stop when exact (among bundles) match found or no matches found\n if (matchingBundles.length <= 1) {\n break;\n }\n }\n\n if (matchingBundles.length === 1) {\n const [[, bundleIndex]] = matchingBundles;\n\n bundles[bundleIndex].coverageRanges = convertRangesToLinesRanges(\n coverages[coverageIndex]\n );\n }\n });\n } catch (error) {\n throw new AppError({ code: 'CannotOpenCoverageFile' }, error);\n }\n\n if (bundles.every(({ coverageRanges }) => coverageRanges === undefined)) {\n throw new AppError({ code: 'NoCoverageMatches' });\n }\n\n return bundles;\n}\n\n/**\n * Find overlaps in arrays of column ranges, using ratcheting pointers instead of nested loops for\n * O(n) runtime instead of O(n^2)\n */\nfunction findCoveredMappingRanges(\n mappingRanges: MappingRange[],\n coveredRanges: ColumnsRange[]\n): MappingRange[] {\n let i = 0;\n let j = 0;\n\n const result: MappingRange[] = [];\n\n while (i < mappingRanges.length && j < coveredRanges.length) {\n const mappingRange = mappingRanges[i];\n const coveredRange = coveredRanges[j];\n\n if (mappingRange.start <= coveredRange.end && coveredRange.start <= mappingRange.end) {\n // Overlaps, calculate amount, move to next coverage range\n const end = Math.min(coveredRange.end, mappingRange.end);\n const start = Math.max(mappingRange.start, coveredRange.start);\n\n result.push({\n start,\n end,\n source: mappingRange.source,\n });\n\n if (\n mappingRanges[i + 1] !== undefined &&\n mappingRanges[i + 1].start <= coveredRange.end &&\n mappingRanges[i + 1].end >= coveredRange.start\n ) {\n // Next module also overlaps current coverage range, advance to next module instead of advancing coverage\n i++;\n } else {\n // Check next coverage range, it may also overlap this module range\n j++;\n }\n } else if (mappingRange.end < coveredRange.start) {\n // Module comes entirely before coverageRange, check next module range\n i++;\n }\n if (coveredRange.end < mappingRange.start) {\n // Module range comes entirely after coverage range, check next coverage range\n j++;\n }\n }\n\n return result;\n}\n\n/**\n * Set covered size for files\n */\nexport function setCoveredSizes(\n line: string,\n files: FileDataMap,\n mappingRanges: MappingRange[],\n coveredRanges: ColumnsRange[]\n): FileDataMap {\n findCoveredMappingRanges(mappingRanges, coveredRanges).forEach(({ start, end, source }) => {\n const rangeByteLength = Buffer.byteLength(line.substring(start, end + 1));\n\n let coveredSize = files[source].coveredSize || 0;\n\n coveredSize += rangeByteLength;\n\n files[source].coveredSize = coveredSize;\n });\n\n return files;\n}\n\nconst percentColors = [\n { percent: 0.0, color: { r: 0xff, g: 0x00, b: 0 } },\n { percent: 0.5, color: { r: 0xff, g: 0xff, b: 0 } },\n { percent: 1.0, color: { r: 0x00, g: 0xff, b: 0 } },\n];\n\n/**\n * Get heat map color by coverage percent\n */\nexport function getColorByPercent(percent: number): string {\n let i = 1;\n\n for (; i < percentColors.length - 1; i++) {\n if (percent < percentColors[i].percent) {\n break;\n }\n }\n\n const lowerColor = percentColors[i - 1];\n const upperColor = percentColors[i];\n const rangeWithinColors = upperColor.percent - lowerColor.percent;\n const rangePercent = (percent - lowerColor.percent) / rangeWithinColors;\n const percentLower = 1 - rangePercent;\n const percentUpper = rangePercent;\n\n const r = Math.floor(lowerColor.color.r * percentLower + upperColor.color.r * percentUpper);\n const g = Math.floor(lowerColor.color.g * percentLower + upperColor.color.g * percentUpper);\n const b = Math.floor(lowerColor.color.b * percentLower + upperColor.color.b * percentUpper);\n\n return `rgb(${r}, ${g}, ${b})`;\n}\n"]}
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