refactor: explicit extensions

README.md

@@ -133,8 +133,8 @@ Native Node.js import mapping supports conditional imports (eg. resolving differ
     // ...
 
     "imports": {
-        // Mapping '~utils' to './src/utils'
-        "~utils": "./src/utils",
+        // Mapping '~utils' to './src/utils.js'
+        "~utils": "./src/utils.js",
 
         // Native Node.js import mapping (can't reference ./src)
         "#internal-package": "./vendors/package/index.js",

src/cli.ts

@@ -2,14 +2,14 @@ import fs from 'fs';
 import { cli } from 'cleye';
 import { rollup, watch } from 'rollup';
 import { version } from '../package.json';
-import { readPackageJson } from './utils/read-package-json';
-import { getExportEntries } from './utils/parse-package-json/get-export-entries';
-import { getAliases } from './utils/parse-package-json/get-aliases';
-import { normalizePath } from './utils/normalize-path';
-import { getSourcePath } from './utils/get-source-path';
-import { getRollupConfigs } from './utils/get-rollup-configs';
-import { tsconfig } from './utils/tsconfig';
-import { log } from './utils/log';
+import { readPackageJson } from './utils/read-package-json.js';
+import { getExportEntries } from './utils/parse-package-json/get-export-entries.js';
+import { getAliases } from './utils/parse-package-json/get-aliases.js';
+import { normalizePath } from './utils/normalize-path.js';
+import { getSourcePath } from './utils/get-source-path.js';
+import { getRollupConfigs } from './utils/get-rollup-configs.js';
+import { tsconfig } from './utils/tsconfig.js';
+import { log } from './utils/log.js';
 
 const { stringify } = JSON;
 

src/local-typescript-loader.ts

@@ -9,5 +9,4 @@ function getLocalTypescriptPath() {
 	}
 }
 
-// eslint-disable-next-line node/global-require
 export default require(getLocalTypescriptPath());

src/utils/get-rollup-configs.ts

@@ -7,13 +7,13 @@ import json from '@rollup/plugin-json';
 import alias from '@rollup/plugin-alias';
 import replace from '@rollup/plugin-replace';
 import type { PackageJson } from 'type-fest';
-import type { ExportEntry, AliasMap } from '../types';
-import { isFormatEsm, createRequire } from './rollup-plugins/create-require';
-import { esbuildTransform, esbuildMinify } from './rollup-plugins/esbuild';
-import { externalizeNodeBuiltins } from './rollup-plugins/externalize-node-builtins';
-import { patchBinary } from './rollup-plugins/patch-binary';
-import { resolveTypescriptMjsCts } from './rollup-plugins/resolve-typescript-mjs-cjs';
-import { getExternalDependencies } from './parse-package-json/get-external-dependencies';
+import type { ExportEntry, AliasMap } from '../types.js';
+import { isFormatEsm, createRequire } from './rollup-plugins/create-require.js';
+import { esbuildTransform, esbuildMinify } from './rollup-plugins/esbuild.js';
+import { externalizeNodeBuiltins } from './rollup-plugins/externalize-node-builtins.js';
+import { patchBinary } from './rollup-plugins/patch-binary.js';
+import { resolveTypescriptMjsCts } from './rollup-plugins/resolve-typescript-mjs-cjs.js';
+import { getExternalDependencies } from './parse-package-json/get-external-dependencies.js';
 
 type Options = {
 	minify: boolean;

src/utils/get-source-path.ts

@@ -1,5 +1,5 @@
-import type { ExportEntry } from '../types';
-import { fsExists } from './fs-exists';
+import type { ExportEntry } from '../types.js';
+import { fsExists } from './fs-exists.js';
 
 const { stringify } = JSON;
 

src/utils/parse-package-json/get-aliases.ts

@@ -1,6 +1,6 @@
 import path from 'path';
 import type { PackageJson } from 'type-fest';
-import type { AliasMap } from '../../types';
+import type { AliasMap } from '../../types.js';
 
 export const getAliases = (
 	{ imports }: PackageJson,

src/utils/parse-package-json/get-export-entries.ts

@@ -1,6 +1,6 @@
 import type { PackageJson } from 'type-fest';
-import type { PackageType, ExportEntry } from '../../types';
-import { normalizePath } from '../normalize-path';
+import type { PackageType, ExportEntry } from '../../types.js';
+import { normalizePath } from '../normalize-path.js';
 
 const getFileType = (filePath: string): PackageType | undefined => {
 	if (filePath.endsWith('.mjs')) {

src/utils/read-package-json.ts

@@ -1,7 +1,7 @@
 import fs from 'fs';
 import path from 'path';
 import type { PackageJson } from 'type-fest';
-import { fsExists } from './fs-exists';
+import { fsExists } from './fs-exists.js';
 
 export const readPackageJson = async (directoryPath: string): Promise<PackageJson> => {
 	const packageJsonPath = path.join(directoryPath, 'package.json');

src/utils/rollup-plugins/esbuild.ts

@@ -1,7 +1,7 @@
 import type { Plugin, InternalModuleFormat } from 'rollup';
 import { createFilter } from '@rollup/pluginutils';
 import { transform, type TransformOptions, type Format } from 'esbuild';
-import { tsconfig } from '../tsconfig';
+import { tsconfig } from '../tsconfig.js';
 
 export function esbuildTransform(
 	options?: TransformOptions,

tests/fixture-package/src/index.js

@@ -1,6 +1,6 @@
 import value from './value.js';
 import { Component } from './component.tsx';
-import { sayHello } from './utils';
+import { sayHello } from './utils.js';
 import { sayHello as sayHelloMjs } from './mjs.mjs';
 import { sayHello as sayHelloMts } from './mts.mts';
 import { sayHello as sayHelloCjs } from './cjs.cjs';

tests/index.ts

@@ -17,8 +17,8 @@ const nodeVersions = [
 	for (const nodeVersion of nodeVersions) {
 		const node = await getNode(nodeVersion);
 		await describe(`Node ${node.version}`, ({ runTestSuite }) => {
-			runTestSuite(import('./specs/error-cases'), node.path);
-			runTestSuite(import('./specs/builds'), node.path);
+			runTestSuite(import('./specs/error-cases.js'), node.path);
+			runTestSuite(import('./specs/builds/index.js'), node.path);
 		});
 	}
 })();

tests/specs/builds/bin.ts

@@ -1,7 +1,7 @@
 import fs from 'fs/promises';
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('bin', ({ test }) => {

tests/specs/builds/dependencies.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll, installTypeScript } from '../../utils';
+import { pkgroll, installTypeScript } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('dependencies', ({ test }) => {

tests/specs/builds/env.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('env', ({ test }) => {

tests/specs/builds/index.ts

@@ -2,18 +2,18 @@ import { testSuite } from 'manten';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('builds', async ({ runTestSuite }) => {
-		runTestSuite(import('./output-commonjs'), nodePath);
-		runTestSuite(import('./output-module'), nodePath);
-		runTestSuite(import('./output-types'), nodePath);
-		runTestSuite(import('./env'), nodePath);
-		runTestSuite(import('./target'), nodePath);
-		runTestSuite(import('./minification'), nodePath);
-		runTestSuite(import('./package-exports'), nodePath);
-		runTestSuite(import('./package-imports'), nodePath);
-		runTestSuite(import('./bin'), nodePath);
-		runTestSuite(import('./dependencies'), nodePath);
-		runTestSuite(import('./src-dist'), nodePath);
-		runTestSuite(import('./sourcemap'), nodePath);
-		runTestSuite(import('./typescript'), nodePath);
+		runTestSuite(import('./output-commonjs.js'), nodePath);
+		runTestSuite(import('./output-module.js'), nodePath);
+		runTestSuite(import('./output-types.js'), nodePath);
+		runTestSuite(import('./env.js'), nodePath);
+		runTestSuite(import('./target.js'), nodePath);
+		runTestSuite(import('./minification.js'), nodePath);
+		runTestSuite(import('./package-exports.js'), nodePath);
+		runTestSuite(import('./package-imports.js'), nodePath);
+		runTestSuite(import('./bin.js'), nodePath);
+		runTestSuite(import('./dependencies.js'), nodePath);
+		runTestSuite(import('./src-dist.js'), nodePath);
+		runTestSuite(import('./sourcemap.js'), nodePath);
+		runTestSuite(import('./typescript.js'), nodePath);
 	});
 });

tests/specs/builds/minification.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('minification', ({ test }) => {

tests/specs/builds/output-commonjs.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('output: commonjs', ({ test }) => {

tests/specs/builds/output-module.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('output: module', ({ test }) => {

tests/specs/builds/output-types.ts

@@ -1,7 +1,7 @@
 import path from 'path';
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll, installTypeScript } from '../../utils';
+import { pkgroll, installTypeScript } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('types', ({ test }) => {
@@ -99,7 +99,7 @@ export default testSuite(({ describe }, nodePath: string) => {
 
 			await fixture.writeJson('package.json', {
 				exports: {
-					'./utils': {
+					'./utils.js': {
 						types: './dist/utils.d.ts',
 					},
 					'./nested': {

tests/specs/builds/package-exports.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('package exports', ({ test }) => {

tests/specs/builds/package-imports.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('package imports', ({ test }) => {
@@ -14,7 +14,7 @@ export default testSuite(({ describe }, nodePath: string) => {
 				},
 			});
 			await fixture.writeFile('src/entry.ts', `
-				import { sayGoodbye } from '~/utils';
+				import { sayGoodbye } from '~/utils.js';
 				console.log(sayGoodbye);
 			`);
 

tests/specs/builds/sourcemap.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('generate sourcemap', ({ test }) => {

tests/specs/builds/src-dist.ts

@@ -2,7 +2,7 @@ import path from 'path';
 import fs from 'fs/promises';
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll, installTypeScript } from '../../utils';
+import { pkgroll, installTypeScript } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('change src', ({ test }) => {

tests/specs/builds/target.ts

@@ -1,7 +1,7 @@
 import path from 'path';
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll, installTypeScript } from '../../utils';
+import { pkgroll, installTypeScript } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('target', ({ describe, test }) => {

tests/specs/builds/typescript.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../../utils';
+import { pkgroll } from '../../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('TypeScript', ({ test }) => {

tests/specs/error-cases.ts

@@ -1,6 +1,6 @@
 import { testSuite, expect } from 'manten';
 import { createFixture } from 'fs-fixture';
-import { pkgroll } from '../utils';
+import { pkgroll } from '../utils.js';
 
 export default testSuite(({ describe }, nodePath: string) => {
 	describe('Error handling', ({ test }) => {