feat(textlint-scripts): support type=module

packages/textlint-scripts/configs/babel-register.js

@@ -11,5 +11,7 @@ const babelConfig = require("./babel.config");
 require("@babel/register")({
     plugins: babelConfig.plugins,
     presets: babelConfig.presets,
-    extensions: useTypeScript ? [".es6", ".es", ".jsx", ".js", ".mjs", ".ts"] : [".es6", ".es", ".jsx", ".js", ".mjs"]
+    extensions: useTypeScript
+        ? [".es6", ".es", ".jsx", ".js", ".cjs", ".mjs", ".ts", ".mts", ".cts"]
+        : [".es6", ".es", ".jsx", ".js", ".cjs", ".mjs"]
 });

packages/textlint-scripts/configs/babel.config.js

@@ -1,24 +1,27 @@
 const fs = require("fs");
-const paths = require("../configs/paths");
-const useTypeScript = fs.existsSync(paths.appTsConfig);
+const { useTypeScript, useESModules } = require("./conditions.js");
 const NO_INLINE = !!process.env.NO_INLINE;
 module.exports = {
-    presets: [
-        [
-            "@babel/env",
-            {
-                // For async/await support
-                // https://babeljs.io/docs/en/babel-preset-env#targetsesmodules
-                targets: {
-                    esmodules: true
+    presets: useESModules
+        // If use native ES Modules, don't transpile
+        ? []
+        // transpile for Node.js CJS
+        : [
+            [
+                "@babel/env",
+                {
+                    // For async/await support
+                    // https://babeljs.io/docs/en/babel-preset-env#targetsesmodules
+                    targets: {
+                        esmodules: true
+                    }
                 }
-            }
-        ]
-    ].concat(useTypeScript ? [["@babel/preset-typescript"]] : []),
+            ]
+        ].concat(useTypeScript ? [["@babel/preset-typescript"]] : []),
     plugins: NO_INLINE
         ? []
         : [
-              // inline fs content
-              "static-fs"
-          ]
+            // inline fs content
+            "static-fs"
+        ]
 };

packages/textlint-scripts/configs/conditions.js

@@ -0,0 +1,14 @@
+const fs = require("fs");
+const paths = require("../configs/paths");
+/**
+ * Return true if TypeScript is enabled
+ * @type {boolean}
+ */
+const useTypeScript = fs.existsSync(paths.appTsConfig);
+/**
+ * Return true if package.json has `type: "module"`
+ * @type {boolean}
+ */
+const useESModules = fs.existsSync(paths.packageJson) && require(paths.packageJson).type === "module";
+module.exports.useTypeScript = useTypeScript;
+module.exports.useESModules = useESModules;

packages/textlint-scripts/configs/paths.js

@@ -4,5 +4,6 @@ const path = require("path");
 const appDirectory = fs.realpathSync(process.cwd());
 const resolveApp = (relativePath) => path.resolve(appDirectory, relativePath);
 module.exports = {
-    appTsConfig: resolveApp("tsconfig.json")
+    appTsConfig: resolveApp("tsconfig.json"),
+    packageJson: resolveApp("package.json")
 };

packages/textlint-scripts/configs/ts-node-register.js

@@ -7,7 +7,7 @@
  */
 const fs = require("fs");
 const paths = require("../configs/paths");
-const useTypeScript = fs.existsSync(paths.appTsConfig);
+const { useTypeScript } = require("./conditions.js");
 if (!useTypeScript) {
     throw new Error(`${paths.appTsConfig} not found.
 

packages/textlint-scripts/scripts/build.js

@@ -5,11 +5,11 @@ process.env.NODE_ENV = "production";
 const fs = require("fs");
 const spawn = require("cross-spawn");
 const paths = require("../configs/paths");
+const { useTypeScript } = require("../configs/conditions.js");
 const args = process.argv.slice(2);
 const babel = require.resolve(".bin/babel");
 const babelConfigFilePath = require.resolve("../configs/babel.config");
 
-const useTypeScript = fs.existsSync(paths.appTsConfig);
 // babel src --out-dir lib --watch --source-maps
 const babelCommand = [babel, "--config-file", `"${babelConfigFilePath}"`, "--source-maps", "--out-dir", "lib", "src"]
     .concat(useTypeScript ? ["--extensions", ".ts"] : [])

packages/textlint-scripts/scripts/test.js

@@ -3,13 +3,14 @@
 process.env.NODE_ENV = "test";
 const spawn = require("cross-spawn");
 const fs = require("fs");
+const { useTypeScript, useESModules } = require("../configs/conditions.js");
+const paths = require("../configs/paths.js");
 const args = process.argv.slice(2);
-const paths = require("../configs/paths");
-const useTypeScript = fs.existsSync(paths.appTsConfig);
 const mocha = require.resolve(".bin/mocha");
 // mocha
 const babelRegisterPath = require.resolve("../configs/babel-register");
-const mochaCommand = [mocha, "--require", `"${babelRegisterPath}"`, "--timeout", "10000"]
+const mochaCommand = [mocha, "--timeout", "10000"]
+    .concat(useESModules ? ["--loader", `${/* TODO: babel loader */}`] : ["--require", `"${babelRegisterPath}"`])
     .concat(useTypeScript ? ["--watch-extensions", "ts"] : [])
     .concat(useTypeScript ? [`"test/**/*.{js,ts}"`] : [`"test/**/*.js"`])
     .concat(args)
@@ -20,15 +21,15 @@ const command = useTypeScript ? `${tscCommand} && ${mochaCommand}` : mochaComman
 const child = spawn(command, {
     shell: true
 });
-child.stderr.on("data", function (data) {
+child.stderr.on("data", function(data) {
     process.stderr.write(data);
 });
-child.stdout.on("data", function (data) {
+child.stdout.on("data", function(data) {
     process.stdout.write(data);
 });
-child.on("error", function (error) {
+child.on("error", function(error) {
     console.error(error);
 });
-child.on("close", function (code) {
+child.on("close", function(code) {
     process.exit(code);
 });