fix: resolve esm file path issue and '<<cwd>>' (example tests) on windows (#678)

#676

---------

Co-authored-by: Misha Kaletsky <mmkal@users.noreply.github.com>

Author: anikghosh256

.github/workflows/ci.yml

@@ -12,6 +12,13 @@ jobs:
     - run: pnpm test -- --coverage
     - name: Coverage
       uses: codecov/codecov-action@v3
+  run_windows:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+    - run: corepack enable
+    - run: pnpm install
+    - run: pnpm test
   create_tgz:
     runs-on: ubuntu-latest
     steps:

examples/0.5-vanilla-esm/migrate.mjs

@@ -1,6 +1,7 @@
 import { Umzug, JSONStorage } from 'umzug';
+import { fileURLToPath } from 'url'
 
-const __dirname = new URL('.', import.meta.url).pathname.replace(/\/$/, '');
+const __dirname = fileURLToPath(new URL('.', import.meta.url)).replace(/\/$/, '')
 
 export const migrator = new Umzug({
 	migrations: {

examples/2-es-modules/umzug.mjs

@@ -1,6 +1,7 @@
 import { Umzug, SequelizeStorage } from 'umzug';
 import { Sequelize, DataTypes } from 'sequelize';
 import * as path from 'path';
+import os from 'os';
 
 const sequelize = new Sequelize({
 	dialect: 'sqlite',
@@ -10,7 +11,7 @@ const sequelize = new Sequelize({
 
 export const migrator = new Umzug({
 	migrations: {
-		glob: ['migrations/*.{js,cjs,mjs}', { cwd: path.dirname(import.meta.url.replace('file://', '')) }],
+		glob: ['migrations/*.{js,cjs,mjs}', { cwd: path.dirname(import.meta.url.replace(os.platform() === 'win32' ? 'file:///' : 'file://', '')) }],
 	},
 	context: { sequelize, DataTypes },
 	storage: new SequelizeStorage({

src/umzug.ts

@@ -3,6 +3,7 @@ import {glob} from 'fast-glob'
 import * as fs from 'fs'
 import * as path from 'path'
 import * as errorCause from 'pony-cause'
+import {pathToFileURL} from 'url'
 import type {CommandLineParserOptions} from './cli'
 import {UmzugCLI} from './cli'
 import type {UmzugStorage} from './storage'
@@ -132,7 +133,8 @@ export class Umzug<Ctx extends object = object> extends emittery<UmzugEvents<Ctx
       // eslint-disable-next-line @typescript-eslint/no-var-requires
       loadModule = async () => require(filepath) as RunnableMigration<unknown>
     } else if (jsExt === '.js' || jsExt === '.mjs') {
-      loadModule = async () => import(filepath) as Promise<RunnableMigration<unknown>>
+      const fileUrl = pathToFileURL(filepath).href
+      loadModule = async () => import(fileUrl) as Promise<RunnableMigration<unknown>>
     } else {
       loadModule = async () => {
         throw new MissingResolverError(filepath)

test/examples.test.ts

@@ -23,6 +23,11 @@ const cleanup = (cwd: string) => {
   )
 }
 
+// Convert path to use forward slashes and normalize it
+const normalizePath = (str: string) => {
+  return str.replace(/\\+/g, '/') // Convert backslashes to forward slashes
+}
+
 examples.forEach(ex => {
   test(`example ${ex}`, async () => {
     const dir = path.join(examplesDir, ex)
@@ -32,6 +37,9 @@ examples.forEach(ex => {
 
     cleanup(dir)
 
+    const cwd = path.resolve(process.cwd()) // Get absolute path
+    const normalizedCwd = normalizePath(cwd) // Normalize cwd path
+
     const stdout = bash
       .split('\n')
       .map(line => line.split('#')[0].trim())
@@ -41,7 +49,8 @@ examples.forEach(ex => {
           let output = execa.sync('sh', ['-c', `${cmd} 2>&1`], {cwd: dir}).stdout
           output = stripAnsi(output)
           output = cmd.startsWith('npm') || cmd.endsWith('--help') ? '...' : output // npm commands and `--help` are formatted inconsistently and aren't v relevant
-          output = output.split(process.cwd()).join('<<cwd>>') // cwd varies by machine
+          output = normalizePath(output)
+          output = output.split(normalizedCwd).join('<<cwd>>') // cwd varies by machine
           output = output.replaceAll(/durationSeconds: .*/g, 'durationSeconds: ???') // migrations durations vary by a few milliseconds
           output = output.replaceAll(/\d{4}.\d{2}.\d{2}T\d{2}.\d{2}.\d{2}/g, '<<timestamp>>') // the river of time flows only in one direction
           return [`\`${cmd}\` output:`, output]