refactor: use explicit import paths

src/cjs/index.ts

@@ -8,11 +8,11 @@ import {
 	createFilesMatcher,
 } from 'get-tsconfig';
 import type { TransformOptions } from 'esbuild';
-import { installSourceMapSupport } from '../source-map';
-import { transformSync } from '../utils/transform';
-import { transformDynamicImport } from '../utils/transform/transform-dynamic-import';
-import { resolveTsPath } from '../utils/resolve-ts-path';
-import { isESM } from '../utils/esm-pattern';
+import { installSourceMapSupport } from '../source-map.js';
+import { transformSync } from '../utils/transform/index.js';
+import { transformDynamicImport } from '../utils/transform/transform-dynamic-import.js';
+import { resolveTsPath } from '../utils/resolve-ts-path.js';
+import { isESM } from '../utils/esm-pattern.js';
 
 const isRelativePathPattern = /^\.{1,2}\//;
 const isTsFilePatten = /\.[cm]?tsx?$/;

src/cli.ts

@@ -3,12 +3,12 @@ import {
 	transformSync as esbuildTransformSync,
 } from 'esbuild';
 import { version } from '../package.json';
-import { run } from './run';
-import { watchCommand } from './watch';
+import { run } from './run.js';
+import { watchCommand } from './watch/index.js';
 import {
 	removeArgvFlags,
 	ignoreAfterArgument,
-} from './remove-argv-flags';
+} from './remove-argv-flags.js';
 
 const tsxFlags = {
 	noCache: {

src/esm/index.ts

@@ -1,6 +1,6 @@
 import { isMainThread } from 'node:worker_threads';
-import { supportsModuleRegister } from '../utils/node-features';
-import { registerLoader } from './register';
+import { supportsModuleRegister } from '../utils/node-features.js';
+import { registerLoader } from './register.js';
 
 // Loaded via --import flag
 if (

src/esm/loaders.ts

@@ -5,11 +5,11 @@ import type {
 	ResolveFnOutput, ResolveHookContext, LoadHook, GlobalPreloadHook, InitializeHook,
 } from 'module';
 import type { TransformOptions } from 'esbuild';
-import { transform } from '../utils/transform';
-import { transformDynamicImport } from '../utils/transform/transform-dynamic-import';
-import { resolveTsPath } from '../utils/resolve-ts-path';
-import { installSourceMapSupport } from '../source-map';
-import { importAttributes } from '../utils/node-features';
+import { transform } from '../utils/transform/index.js';
+import { transformDynamicImport } from '../utils/transform/transform-dynamic-import.js';
+import { resolveTsPath } from '../utils/resolve-ts-path.js';
+import { installSourceMapSupport } from '../source-map.js';
+import { importAttributes } from '../utils/node-features.js';
 import {
 	tsconfigPathsMatcher,
 	fileMatcher,

src/esm/register.ts

@@ -1,6 +1,6 @@
 import module from 'node:module';
 import { MessageChannel } from 'node:worker_threads';
-import { installSourceMapSupport } from '../source-map';
+import { installSourceMapSupport } from '../source-map.js';
 
 export const registerLoader = () => {
 	const { port1, port2 } = new MessageChannel();

src/loader.ts

@@ -1,4 +1,4 @@
-import './patch-repl';
+import './patch-repl.js';
 
 // Hook require() to transform to CJS
 // eslint-disable-next-line import/no-unresolved
@@ -8,4 +8,4 @@ require('./cjs/index.cjs');
 Hook import/import() to transform to ESM
 Can be used in Node v12 to support dynamic `import()`
 */
-export * from './esm';
+export * from './esm/index.js';

src/patch-repl.ts

@@ -1,5 +1,5 @@
 import repl, { type REPLServer, type REPLEval } from 'repl';
-import { transform } from './utils/transform';
+import { transform } from './utils/transform/index.js';
 
 function patchEval(nodeRepl: REPLServer) {
 	const { eval: defaultEval } = nodeRepl;

src/remove-argv-flags.ts

@@ -24,10 +24,10 @@ export const ignoreAfterArgument = (
 	};
 };
 
-export function removeArgvFlags(
+export const removeArgvFlags = (
 	tsxFlags: Flags,
 	argv = process.argv.slice(2),
-) {
+) => {
 	typeFlag(
 		tsxFlags,
 		argv,
@@ -37,4 +37,4 @@ export function removeArgvFlags(
 	);
 
 	return argv;
-}
+};

src/repl.ts

@@ -2,7 +2,7 @@
 
 import repl, { type REPLEval } from 'repl';
 import { version } from '../package.json';
-import { transform } from './utils/transform';
+import { transform } from './utils/transform/index.js';
 
 // Copied from
 // https://github.com/nodejs/node/blob/v18.2.0/lib/internal/main/repl.js#L37

src/run.ts

@@ -3,14 +3,14 @@ import { pathToFileURL } from 'url';
 import spawn from 'cross-spawn';
 import { supportsModuleRegister } from './utils/node-features';
 
-export function run(
+export const run = (
 	argv: string[],
 	options?: {
 		noCache?: boolean;
 		tsconfigPath?: string;
 		ipc?: boolean;
 	},
-) {
+) => {
 	const environment = { ...process.env };
 	const stdio: StdioOptions = [
 		'inherit', // stdin
@@ -45,4 +45,4 @@ export function run(
 			env: environment,
 		},
 	);
-}
+};

src/utils/esm-pattern.ts

@@ -1,4 +1,4 @@
-import { parseEsm } from './es-module-lexer';
+import { parseEsm } from './es-module-lexer.js';
 
 /*
 Previously, this regex was used as a naive ESM catch,

src/utils/read-json-file.ts

@@ -1,8 +1,10 @@
 import fs from 'fs';
 
-export function readJsonFile<JsonType>(filePath: string) {
+export const readJsonFile = <JsonType>(
+	filePath: string,
+) => {
 	try {
 		const jsonString = fs.readFileSync(filePath, 'utf8');
 		return JSON.parse(jsonString) as JsonType;
 	} catch {}
-}
+};

src/utils/transform/apply-transformers.ts

@@ -1,6 +1,6 @@
 import remapping from '@ampproject/remapping';
 import type { SourceMapInput } from '@ampproject/remapping';
-import type { RawSourceMap } from '../../source-map';
+import type { RawSourceMap } from '../../source-map.js';
 
 type SourceMap = SourceMapInput | RawSourceMap;
 

src/utils/transform/cache.ts

@@ -1,8 +1,8 @@
 import fs from 'fs';
 import path from 'path';
 import os from 'os';
-import { readJsonFile } from '../read-json-file';
-import type { Transformed } from './apply-transformers';
+import { readJsonFile } from '../read-json-file.js';
+import type { Transformed } from './apply-transformers.js';
 
 const getTime = () => Math.floor(Date.now() / 1e8);
 

src/utils/transform/index.ts

@@ -5,18 +5,18 @@ import {
 	transformSync as esbuildTransformSync,
 	version as esbuildVersion,
 } from 'esbuild';
-import { sha1 } from '../sha1';
-import { version as transformDynamicImportVersion, transformDynamicImport } from './transform-dynamic-import';
-import cache from './cache';
+import { sha1 } from '../sha1.js';
+import { version as transformDynamicImportVersion, transformDynamicImport } from './transform-dynamic-import.js';
+import cache from './cache.js';
 import {
 	applyTransformersSync,
 	applyTransformers,
 	type Transformed,
-} from './apply-transformers';
+} from './apply-transformers.js';
 import {
 	cacheConfig,
 	patchOptions,
-} from './get-esbuild-options';
+} from './get-esbuild-options.js';
 
 // Used by cjs-loader
 export function transformSync(

src/utils/transform/transform-dynamic-import.ts

@@ -1,6 +1,6 @@
 import MagicString from 'magic-string';
-import type { RawSourceMap } from '../../source-map';
-import { parseEsm } from '../es-module-lexer';
+import type { RawSourceMap } from '../../source-map.js';
+import { parseEsm } from '../es-module-lexer.js';
 
 export const version = '1';
 

src/watch/index.ts

@@ -4,16 +4,16 @@ import { constants as osConstants } from 'os';
 import path from 'path';
 import { command } from 'cleye';
 import { watch } from 'chokidar';
-import { run } from '../run';
+import { run } from '../run.js';
 import {
 	removeArgvFlags,
 	ignoreAfterArgument,
-} from '../remove-argv-flags';
+} from '../remove-argv-flags.js';
 import {
 	clearScreen,
 	debounce,
 	log,
-} from './utils';
+} from './utils.js';
 
 const killProcess = async (
 	childProcess: ChildProcess,

tests/specs/cli.ts

@@ -2,9 +2,9 @@ import path from 'path';
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
 import packageJson from '../../package.json';
-import { tsx, tsxPath } from '../utils/tsx';
-import { ptyShell, isWindows } from '../utils/pty-shell';
-import { expectMatchInOrder } from '../utils/expect-match-in-order';
+import { tsx, tsxPath } from '../utils/tsx.js';
+import { ptyShell, isWindows } from '../utils/pty-shell/index';
+import { expectMatchInOrder } from '../utils/expect-match-in-order.js';
 
 export default testSuite(({ describe }) => {
 	describe('CLI', ({ describe, test }) => {

tests/specs/repl.ts

@@ -1,6 +1,6 @@
 import { testSuite } from 'manten';
 import { tsx } from '../utils/tsx';
-import { processInteract } from '../utils/process-interact';
+import { processInteract } from '../utils/process-interact.js';
 
 export default testSuite(async ({ describe }) => {
 	describe('REPL', ({ test }) => {

tests/specs/smoke.ts

@@ -3,7 +3,7 @@ import { pathToFileURL } from 'url';
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
 import outdent from 'outdent';
-import type { NodeApis } from '../utils/tsx';
+import type { NodeApis } from '../utils/tsx.js';
 
 const cjsContextCheck = 'typeof module !== \'undefined\'';
 const tsCheck = '1 as number';

tests/specs/transform.ts

@@ -2,7 +2,7 @@ import { testSuite, expect } from 'manten';
 import { createFsRequire } from 'fs-require';
 import { Volume } from 'memfs';
 import outdent from 'outdent';
-import { transform, transformSync } from '../../src/utils/transform';
+import { transform, transformSync } from '../../src/utils/transform/index.js';
 
 const base64Module = (code: string) => `data:text/javascript;base64,${Buffer.from(code).toString('base64')}`;
 

tests/specs/watch.ts

@@ -2,8 +2,8 @@ import path from 'path';
 import { setTimeout } from 'timers/promises';
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { tsx } from '../utils/tsx';
-import { processInteract } from '../utils/process-interact';
+import { tsx } from '../utils/tsx.js';
+import { processInteract } from '../utils/process-interact.js';
 
 export default testSuite(async ({ describe }) => {
 	describe('watch', async ({ test, describe, onFinish }) => {