Merge pull request #32 from parcel-bundler/windows

Fix path handling on windows

.mocharc.json

@@ -0,0 +1,3 @@
+{
+  "require": ["@babel/register"]
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@parcel/source-map",
-  "version": "2.0.0-alpha.4.14",
+  "version": "2.0.0-alpha.4.15",
   "main": "./dist/node.js",
   "browser": "./dist/wasm-browser.js",
   "license": "MIT",
@@ -61,6 +61,7 @@
     "@babel/core": "^7.9.0",
     "@babel/preset-env": "^7.9.5",
     "@babel/preset-flow": "^7.9.0",
+    "@babel/register": "^7.11.5",
     "cross-env": "^7.0.2",
     "flow-bin": "^0.123.0",
     "flow-copy-source": "^2.0.9",

src/SourceMap.js

@@ -21,7 +21,7 @@ export default class SourceMap {
    * @param projectRoot root directory of the project, this is to ensure all source paths are relative to this path
    */
   constructor(projectRoot: string = '/') {
-    this.projectRoot = normalizePath(projectRoot);
+    this.projectRoot = projectRoot;
   }
 
   /**

src/utils.js

@@ -3,31 +3,39 @@ import type { VLQMap, SourceMapStringifyOptions } from './types';
 
 import path from 'path';
 
+// For some reason path.isAbsolute barely works... Regex to the rescue?
+// Apparently windows stuff is under `path.win32`, so yeah windows makes stuff complicated :)
+const ABSOLUTE_PATH_REGEX = /^([a-zA-Z]:){0,1}[\\/]+/;
+const PATH_SEPARATOR_REGEX = /\\/g;
+
 export function generateInlineMap(map: string): string {
   return `data:application/json;charset=utf-8;base64,${Buffer.from(map).toString('base64')}`;
 }
 
-export function normalizePath(filepath: string): string {
-  filepath = filepath.replace(/\\/g, '/');
-
-  // Prefix relative paths with ./ as it makes it more clear and probably prevents issues
-  if (filepath.length > 0 && filepath[0] !== '.' && !path.isAbsolute(filepath)) {
-    filepath = `./${filepath}`;
-  }
+export function isAbsolute(filepath: string): boolean {
+  return ABSOLUTE_PATH_REGEX.test(filepath);
+}
 
-  return filepath;
+export function normalizePath(filepath: string): string {
+  return filepath.replace(ABSOLUTE_PATH_REGEX, '/').replace(PATH_SEPARATOR_REGEX, '/');
 }
 
 export function relatifyPath(filepath: string, rootDir: string): string {
-  // Sourcemaps are made for web, so replace backslashes with regular slashes
+  rootDir = normalizePath(rootDir);
   filepath = normalizePath(filepath);
 
   // Make root paths relative to the rootDir
   if (filepath[0] === '/') {
-    filepath = normalizePath(path.relative(rootDir, filepath));
+    filepath = path.relative(rootDir, filepath);
   }
 
-  return filepath;
+  // Prefix relative paths with ./ as it makes it more clear and probably prevents issues
+  if (filepath[0] !== '.') {
+    filepath = `./${filepath}`;
+  }
+
+  // Sourcemaps are made for web, so replace backslashes with regular slashes
+  return normalizePath(filepath);
 }
 
 export async function partialVlqMapToSourceMap(

test/append.test.js

@@ -1,5 +1,5 @@
-const assert = require('assert');
-const SourceMap = require('.').default;
+import assert from 'assert';
+import SourceMap from '.';
 
 const SIMPLE_SOURCE_MAP = {
   version: 3,

test/basic.test.js

@@ -1,5 +1,5 @@
-const assert = require('assert');
-const SourceMap = require('.').default;
+import assert from 'assert';
+import SourceMap from '.';
 
 const SIMPLE_SOURCE_MAP = {
   version: 3,

test/empty-map.test.js

@@ -1,9 +1,9 @@
-const assert = require('assert');
-const { generateEmptyMap } = require('.').default;
+import assert from 'assert';
+import SourceMap from '.';
 
 describe('SourceMap - Empty Map', () => {
   it('Should be able to create a 1 to 1 map from a sourcefile', async () => {
-    let map = generateEmptyMap({
+    let map = SourceMap.generateEmptyMap({
       projectRoot: '/test-root',
       sourceName: '/test-root/index.js',
       sourceContent: `
@@ -44,7 +44,7 @@ describe('SourceMap - Empty Map', () => {
   });
 
   it('Should be able to create a 1 to 1 map from a sourcefile with a lineOffset', async () => {
-    let map = generateEmptyMap({
+    let map = SourceMap.generateEmptyMap({
       projectRoot: '/test-root',
       sourceName: 'index.js',
       sourceContent: `

test/extend.test.js

@@ -1,5 +1,5 @@
-const assert = require('assert');
-const SourceMap = require('.').default;
+import assert from 'assert';
+import SourceMap from '.';
 
 describe('SourceMap - Extend Map', () => {
   it('Basic extending', async function () {

test/find.test.js

@@ -1,5 +1,5 @@
-const assert = require('assert');
-const SourceMap = require('.').default;
+import assert from 'assert';
+import SourceMap from '.';
 
 describe('SourceMap - Find', () => {
   it('Should be able to find closest mapping to a generated position', async () => {

test/formats.test.js

@@ -1,5 +1,5 @@
-const assert = require('assert');
-const SourceMap = require('.').default;
+import assert from 'assert';
+import SourceMap from '.';
 
 const SIMPLE_SOURCE_MAP = {
   version: 3,
@@ -79,10 +79,10 @@ describe('SourceMap - Formats', () => {
   });
 
   it('Should make all sourcePaths web friendly aka no windows backslashes', async () => {
-    let map = new SourceMap('\\Users\\test\\');
+    let map = new SourceMap('C:\\Users\\test\\');
     map.addRawMappings({
       mappings: SIMPLE_SOURCE_MAP.mappings,
-      sources: ['\\Users\\test\\helloworld.coffee'],
+      sources: ['C:\\Users\\test\\helloworld.coffee'],
       names: SIMPLE_SOURCE_MAP.names,
     });
 

test/inline-source.test.js

@@ -1,7 +1,7 @@
-const assert = require('assert');
-const fs = require('fs-extra');
-const path = require('path');
-const SourceMap = require('.').default;
+import assert from 'assert';
+import fs from 'fs-extra';
+import path from 'path';
+import SourceMap from '.';
 
 const SIMPLE_SOURCE_MAP = {
   version: 3,

test/utils.test.js

@@ -0,0 +1,34 @@
+import assert from 'assert';
+import { normalizePath, relatifyPath } from '../src/utils';
+
+describe('Utilities', () => {
+  it('Relative path - WIN32', async () => {
+    let result = relatifyPath('D:\\test\\sub-dir\\file.js', 'D:\\test\\sub-dir\\');
+    assert.equal(result, './file.js');
+  });
+
+  it('Relative path - POSIX', async () => {
+    let result = relatifyPath('\\test\\sub-dir\\file.js', '\\test\\sub-dir\\');
+    assert.equal(result, './file.js');
+  });
+
+  it('Relative path - POSIX', async () => {
+    let result = relatifyPath('/test/sub-dir/file.js', '/test/sub-dir/');
+    assert.equal(result, './file.js');
+  });
+
+  it('Normalize path - WIN32', async () => {
+    let result = normalizePath('D:\\test\\sub-dir\\file.js');
+    assert.equal(result, '/test/sub-dir/file.js');
+  });
+
+  it('Normalize path - POSIX', async () => {
+    let result = normalizePath('\\test\\sub-dir\\file.js');
+    assert.equal(result, '/test/sub-dir/file.js');
+  });
+
+  it('Normalize path - POSIX', async () => {
+    let result = normalizePath('/test/sub-dir/file.js');
+    assert.equal(result, '/test/sub-dir/file.js');
+  });
+});

test/vlq.test.js

@@ -1,5 +1,5 @@
-const assert = require('assert');
-const SourceMap = require('.').default;
+import assert from 'assert';
+import SourceMap from '.';
 
 const SIMPLE_SOURCE_MAP = {
   version: 3,