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feat(coverage): v8 to ignore empty lines, comments, types
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,156 @@ | ||
diff --git a/CHANGELOG.md b/CHANGELOG.md | ||
deleted file mode 100644 | ||
index 4f7e3bc8d1bba4feb51044ff9eb77b41f972f957..0000000000000000000000000000000000000000 | ||
diff --git a/index.d.ts b/index.d.ts | ||
index ee7b286844f2bf96357218166e26e1c338f774cf..657531b7c75f43e9a4e957dd1f10797e44da5bb1 100644 | ||
--- a/index.d.ts | ||
+++ b/index.d.ts | ||
@@ -1,5 +1,7 @@ | ||
/// <reference types="node" /> | ||
|
||
+// Patch applied: https://github.com/istanbuljs/v8-to-istanbul/pull/244 | ||
+ | ||
import { Profiler } from 'inspector' | ||
import { CoverageMapData } from 'istanbul-lib-coverage' | ||
import { SourceMapInput } from '@jridgewell/trace-mapping' | ||
@@ -20,6 +22,6 @@ declare class V8ToIstanbul { | ||
toIstanbul(): CoverageMapData | ||
} | ||
|
||
-declare function v8ToIstanbul(scriptPath: string, wrapperLength?: number, sources?: Sources, excludePath?: (path: string) => boolean): V8ToIstanbul | ||
+declare function v8ToIstanbul(scriptPath: string, wrapperLength?: number, sources?: Sources, excludePath?: (path: string) => boolean, excludeEmptyLines?: boolean): V8ToIstanbul | ||
|
||
export = v8ToIstanbul | ||
diff --git a/index.js b/index.js | ||
index 4db27a7d84324d0e6605c5506e3eee5665ddfeb0..7bfb839634b1e3c54efedc3c270d82edc4167a64 100644 | ||
--- a/index.js | ||
+++ b/index.js | ||
@@ -1,5 +1,6 @@ | ||
+// Patch applied: https://github.com/istanbuljs/v8-to-istanbul/pull/244 | ||
const V8ToIstanbul = require('./lib/v8-to-istanbul') | ||
|
||
-module.exports = function (path, wrapperLength, sources, excludePath) { | ||
- return new V8ToIstanbul(path, wrapperLength, sources, excludePath) | ||
+module.exports = function (path, wrapperLength, sources, excludePath, excludeEmptyLines) { | ||
+ return new V8ToIstanbul(path, wrapperLength, sources, excludePath, excludeEmptyLines) | ||
} | ||
diff --git a/lib/source.js b/lib/source.js | ||
index d8ebc215f6ad83d472abafe976935acfe5c61b04..021fd2aed1f73ebb4adc449ce6e96f2d89c295a5 100644 | ||
--- a/lib/source.js | ||
+++ b/lib/source.js | ||
@@ -1,23 +1,32 @@ | ||
+// Patch applied: https://github.com/istanbuljs/v8-to-istanbul/pull/244 | ||
const CovLine = require('./line') | ||
const { sliceRange } = require('./range') | ||
-const { originalPositionFor, generatedPositionFor, GREATEST_LOWER_BOUND, LEAST_UPPER_BOUND } = require('@jridgewell/trace-mapping') | ||
+const { originalPositionFor, generatedPositionFor, eachMapping, GREATEST_LOWER_BOUND, LEAST_UPPER_BOUND } = require('@jridgewell/trace-mapping') | ||
|
||
module.exports = class CovSource { | ||
- constructor (sourceRaw, wrapperLength) { | ||
+ constructor (sourceRaw, wrapperLength, traceMap) { | ||
sourceRaw = sourceRaw ? sourceRaw.trimEnd() : '' | ||
this.lines = [] | ||
this.eof = sourceRaw.length | ||
this.shebangLength = getShebangLength(sourceRaw) | ||
this.wrapperLength = wrapperLength - this.shebangLength | ||
- this._buildLines(sourceRaw) | ||
+ this._buildLines(sourceRaw, traceMap) | ||
} | ||
|
||
- _buildLines (source) { | ||
+ _buildLines (source, traceMap) { | ||
let position = 0 | ||
let ignoreCount = 0 | ||
let ignoreAll = false | ||
+ const linesToCover = traceMap && this._parseLinesToCover(traceMap) | ||
+ | ||
for (const [i, lineStr] of source.split(/(?<=\r?\n)/u).entries()) { | ||
- const line = new CovLine(i + 1, position, lineStr) | ||
+ const lineNumber = i + 1 | ||
+ const line = new CovLine(lineNumber, position, lineStr) | ||
+ | ||
+ if (linesToCover && !linesToCover.has(lineNumber)) { | ||
+ line.ignore = true | ||
+ } | ||
+ | ||
if (ignoreCount > 0) { | ||
line.ignore = true | ||
ignoreCount-- | ||
@@ -125,6 +134,18 @@ module.exports = class CovSource { | ||
if (this.lines[line - 1] === undefined) return this.eof | ||
return Math.min(this.lines[line - 1].startCol + relCol, this.lines[line - 1].endCol) | ||
} | ||
+ | ||
+ _parseLinesToCover (traceMap) { | ||
+ const linesToCover = new Set() | ||
+ | ||
+ eachMapping(traceMap, (mapping) => { | ||
+ if (mapping.originalLine !== null) { | ||
+ linesToCover.add(mapping.originalLine) | ||
+ } | ||
+ }) | ||
+ | ||
+ return linesToCover | ||
+ } | ||
} | ||
|
||
// this implementation is pulled over from istanbul-lib-sourcemap: | ||
diff --git a/lib/v8-to-istanbul.js b/lib/v8-to-istanbul.js | ||
index 3616437b00658861dc5a8910c64d1449e9fdf467..c1e0c0ae19984480e408713d1691fa174a7c4c1f 100644 | ||
--- a/lib/v8-to-istanbul.js | ||
+++ b/lib/v8-to-istanbul.js | ||
@@ -1,3 +1,4 @@ | ||
+// Patch applied: https://github.com/istanbuljs/v8-to-istanbul/pull/244 | ||
const assert = require('assert') | ||
const convertSourceMap = require('convert-source-map') | ||
const util = require('util') | ||
@@ -25,12 +26,13 @@ const isNode8 = /^v8\./.test(process.version) | ||
const cjsWrapperLength = isOlderNode10 ? require('module').wrapper[0].length : 0 | ||
|
||
module.exports = class V8ToIstanbul { | ||
- constructor (scriptPath, wrapperLength, sources, excludePath) { | ||
+ constructor (scriptPath, wrapperLength, sources, excludePath, excludeEmptyLines) { | ||
assert(typeof scriptPath === 'string', 'scriptPath must be a string') | ||
assert(!isNode8, 'This module does not support node 8 or lower, please upgrade to node 10') | ||
this.path = parsePath(scriptPath) | ||
this.wrapperLength = wrapperLength === undefined ? cjsWrapperLength : wrapperLength | ||
this.excludePath = excludePath || (() => false) | ||
+ this.excludeEmptyLines = excludeEmptyLines === true | ||
this.sources = sources || {} | ||
this.generatedLines = [] | ||
this.branches = {} | ||
@@ -58,8 +60,8 @@ module.exports = class V8ToIstanbul { | ||
if (!this.sourceMap.sourcesContent) { | ||
this.sourceMap.sourcesContent = await this.sourcesContentFromSources() | ||
} | ||
- this.covSources = this.sourceMap.sourcesContent.map((rawSource, i) => ({ source: new CovSource(rawSource, this.wrapperLength), path: this.sourceMap.sources[i] })) | ||
- this.sourceTranspiled = new CovSource(rawSource, this.wrapperLength) | ||
+ this.covSources = this.sourceMap.sourcesContent.map((rawSource, i) => ({ source: new CovSource(rawSource, this.wrapperLength, this.excludeEmptyLines ? this.sourceMap : null), path: this.sourceMap.sources[i] })) | ||
+ this.sourceTranspiled = new CovSource(rawSource, this.wrapperLength, this.excludeEmptyLines ? this.sourceMap : null) | ||
} else { | ||
const candidatePath = this.rawSourceMap.sourcemap.sources.length >= 1 ? this.rawSourceMap.sourcemap.sources[0] : this.rawSourceMap.sourcemap.file | ||
this.path = this._resolveSource(this.rawSourceMap, candidatePath || this.path) | ||
@@ -82,8 +84,8 @@ module.exports = class V8ToIstanbul { | ||
// We fallback to reading the original source from disk. | ||
originalRawSource = await readFile(this.path, 'utf8') | ||
} | ||
- this.covSources = [{ source: new CovSource(originalRawSource, this.wrapperLength), path: this.path }] | ||
- this.sourceTranspiled = new CovSource(rawSource, this.wrapperLength) | ||
+ this.covSources = [{ source: new CovSource(originalRawSource, this.wrapperLength, this.excludeEmptyLines ? this.sourceMap : null), path: this.path }] | ||
+ this.sourceTranspiled = new CovSource(rawSource, this.wrapperLength, this.excludeEmptyLines ? this.sourceMap : null) | ||
} | ||
} else { | ||
this.covSources = [{ source: new CovSource(rawSource, this.wrapperLength), path: this.path }] | ||
@@ -281,8 +283,10 @@ module.exports = class V8ToIstanbul { | ||
s: {} | ||
} | ||
source.lines.forEach((line, index) => { | ||
- statements.statementMap[`${index}`] = line.toIstanbul() | ||
- statements.s[`${index}`] = line.ignore ? 1 : line.count | ||
+ if (!line.ignore) { | ||
+ statements.statementMap[`${index}`] = line.toIstanbul() | ||
+ statements.s[`${index}`] = line.count | ||
+ } | ||
}) | ||
return statements | ||
} |
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