From bb04c561bffe9802b7d2e7e91216aa1d9230490a Mon Sep 17 00:00:00 2001
From: Clement Yan <yanclement94@gmail.com>
Date: Fri, 4 Jun 2021 05:22:19 +0800
Subject: [PATCH] fix: address file URL path regression on Windows (#146)

BREAKING CHANGE: minimum Node version now 10.12.
---
 lib/v8-to-istanbul.js  |  8 ++++++--
 package.json           |  2 +-
 test/v8-to-istanbul.js | 21 +++++++++++----------
 3 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/lib/v8-to-istanbul.js b/lib/v8-to-istanbul.js
index f4bd25d0..46fefb89 100644
--- a/lib/v8-to-istanbul.js
+++ b/lib/v8-to-istanbul.js
@@ -1,6 +1,7 @@
 const assert = require('assert')
 const convertSourceMap = require('convert-source-map')
 const { dirname, isAbsolute, join, resolve } = require('path')
+const { fileURLToPath } = require('url')
 const CovBranch = require('./branch')
 const CovFunction = require('./function')
 const CovSource = require('./source')
@@ -83,7 +84,10 @@ module.exports = class V8ToIstanbul {
   }
 
   _resolveSource (rawSourceMap, sourcePath) {
-    sourcePath = sourcePath.replace(/(^file:\/\/)|(^webpack:\/\/)/, '')
+    if (sourcePath.startsWith('file://')) {
+      return fileURLToPath(sourcePath)
+    }
+    sourcePath = sourcePath.replace(/^webpack:\/\//, '')
     const sourceRoot = rawSourceMap.sourcemap.sourceRoot ? rawSourceMap.sourcemap.sourceRoot.replace('file://', '') : ''
     const candidatePath = join(sourceRoot, sourcePath)
 
@@ -282,5 +286,5 @@ module.exports = class V8ToIstanbul {
 }
 
 function parsePath (scriptPath) {
-  return scriptPath.replace('file://', '')
+  return scriptPath.startsWith('file://') ? fileURLToPath(scriptPath) : scriptPath
 }
diff --git a/package.json b/package.json
index ae5caf0d..728697c1 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "tap": "^14.10.8"
   },
   "engines": {
-    "node": ">=10.10.0"
+    "node": ">=10.12.0"
   },
   "files": [
     "lib/*.js",
diff --git a/test/v8-to-istanbul.js b/test/v8-to-istanbul.js
index 6765966d..78f95a26 100644
--- a/test/v8-to-istanbul.js
+++ b/test/v8-to-istanbul.js
@@ -1,6 +1,7 @@
 /* global describe, it, beforeEach, afterEach */
 const { readdirSync, lstatSync, writeFileSync, readFileSync } = require('fs')
 const path = require('path')
+const { pathToFileURL } = require('url')
 const runFixture = require('./utils/run-fixture')
 const V8ToIstanbul = require('../lib/v8-to-istanbul')
 const crypto = require('crypto')
@@ -25,7 +26,7 @@ describe('V8ToIstanbul', async () => {
 
     it('handles ESM style paths', async () => {
       const v8ToIstanbul = new V8ToIstanbul(
-        `file://${require.resolve('./fixtures/scripts/functions.js')}`,
+        pathToFileURL(require.resolve('./fixtures/scripts/functions.js')).href,
         0
       )
       await v8ToIstanbul.load()
@@ -94,7 +95,7 @@ ${'//'}${'#'} sourceMappingURL=data:application/json;base64,${base64Sourcemap}
 
     it('should clamp line source column >= 0', async () => {
       const v8ToIstanbul = new V8ToIstanbul(
-        `file://${require.resolve('./fixtures/scripts/needs-compile.compiled.js')}`,
+        pathToFileURL(require.resolve('./fixtures/scripts/needs-compile.compiled.js')).href,
         0
       )
 
@@ -124,7 +125,7 @@ ${'//'}${'#'} sourceMappingURL=data:application/json;base64,${base64Sourcemap}
 
     it('should exclude files when passing excludePath', async () => {
       const v8ToIstanbul = new V8ToIstanbul(
-        `file://${require.resolve('./fixtures/scripts/sourcemap-multisource.js')}`,
+        pathToFileURL(require.resolve('./fixtures/scripts/sourcemap-multisource.js')).href,
         0,
         undefined,
         path => path.indexOf('bootstrap') > -1
@@ -137,7 +138,7 @@ ${'//'}${'#'} sourceMappingURL=data:application/json;base64,${base64Sourcemap}
           endOffset: 1
         }]
       }])
-      Object.keys(v8ToIstanbul.toIstanbul()).should.eql(['/src/index.ts', '/src/utils.ts'])
+      Object.keys(v8ToIstanbul.toIstanbul()).should.eql(['/src/index.ts', '/src/utils.ts'].map(path.normalize))
     })
   })
 
@@ -152,7 +153,7 @@ ${'//'}${'#'} sourceMappingURL=data:application/json;base64,${base64Sourcemap}
     })
     it('should handle empty sources in a sourcemap', async () => {
       const v8ToIstanbul = new V8ToIstanbul(
-        `file://${require.resolve('./fixtures/scripts/empty.compiled.js')}`,
+        pathToFileURL(require.resolve('./fixtures/scripts/empty.compiled.js')).href,
         0
       )
       await v8ToIstanbul.load()
@@ -160,22 +161,22 @@ ${'//'}${'#'} sourceMappingURL=data:application/json;base64,${base64Sourcemap}
 
     it('should handle relative sourceRoots correctly', async () => {
       const v8ToIstanbul = new V8ToIstanbul(
-        `file://${require.resolve('./fixtures/scripts/relative-source-root.compiled.js')}`,
+        pathToFileURL(require.resolve('./fixtures/scripts/relative-source-root.compiled.js')).href,
         0
       )
       await v8ToIstanbul.load()
-      assert(v8ToIstanbul.path.includes('v8-to-istanbul/test/fixtures/one-up/relative-source-root.js'))
+      assert(v8ToIstanbul.path.includes(path.normalize('v8-to-istanbul/test/fixtures/one-up/relative-source-root.js')))
     })
 
-    it('should handles source maps with moultiple sources', async () => {
+    it('should handles source maps with multiple sources', async () => {
       const v8ToIstanbul = new V8ToIstanbul(
-        `file://${require.resolve('./fixtures/scripts/sourcemap-multisource.js')}`,
+        pathToFileURL(require.resolve('./fixtures/scripts/sourcemap-multisource.js')).href,
         0
       )
       await v8ToIstanbul.load()
 
       v8ToIstanbul.covSources.length.should.equal(3)
-      Object.keys(v8ToIstanbul.toIstanbul()).should.eql(['/webpack/bootstrap', '/src/index.ts', '/src/utils.ts'])
+      Object.keys(v8ToIstanbul.toIstanbul()).should.eql(['/webpack/bootstrap', '/src/index.ts', '/src/utils.ts'].map(path.normalize))
     })
   })