apply pure ESM policy

.github/workflows/ci.yml

@@ -62,7 +62,7 @@ jobs:
       with:
         deno-version: "v2.x"
     - run: npm ci
-    - run: deno test test/deno_test.ts
+    - run: npm run test:deno
 
   bun:
     runs-on: ubuntu-latest
@@ -72,5 +72,5 @@ jobs:
     - name: Setup Bun
       uses: oven-sh/setup-bun@v2
     - run: bun install
-    - run: bun test test/bun.spec.ts
+    - run: npm run test:bun
 

.mocharc.js

@@ -1,10 +1,9 @@
-'use strict';
-
-require("ts-node/register");
+"use strict";
 
 module.exports = {
   diff: true,
-  extension: ['ts'],
-  package: '../package.json',
+  extension: ["ts"],
+  package: "../package.json",
   timeout: 10000,
+  require: ["tsimp"],
 };

package.json

@@ -4,21 +4,22 @@
   "description": "MessagePack for ECMA-262/JavaScript/TypeScript",
   "author": "The MessagePack community",
   "license": "ISC",
-  "main": "./dist/index.js",
+  "main": "./dist.cjs/index.js",
   "module": "./dist.esm/index.mjs",
   "cdn": "./dist.umd/msgpack.min.js",
   "unpkg": "./dist.umd/msgpack.min.js",
-  "types": "./dist/index.d.ts",
+  "types": "./dist.esm/index.d.ts",
   "sideEffects": false,
   "scripts": {
     "build": "npm publish --dry-run",
-    "prepare": "npm run clean && webpack --bail && tsc --build tsconfig.dist.json tsconfig.dist.esm.json && ts-node tools/esmify.ts dist.esm/*.js dist.esm/*/*.js",
+    "prepare": "npm run clean && webpack --bail && tsc --build tsconfig.dist.cjs.json tsconfig.dist.esm.json && tsimp tools/fix-ext.mts --mjs dist.esm/*.js dist.esm/*/*.js && tsimp tools/fix-ext.mts --cjs dist.cjs/*.js dist.cjs/*/*.js",
     "prepublishOnly": "npm run test:dist",
     "clean": "rimraf build dist dist.*",
     "test": "mocha 'test/**/*.test.ts'",
     "test:dist": "npm run lint && npm run test && npm run test:deno",
     "test:cover": "npm run cover:clean && npx nyc --no-clean npm run 'test' && npm run cover:report",
     "test:deno": "deno test test/deno_test.ts",
+    "test:bun": "bun test test/bun.spec.ts",
     "test:fuzz": "npm exec --yes -- jsfuzz@git+https://gitlab.com/gitlab-org/security-products/analyzers/fuzzers/jsfuzz.git#39e6cf16613a0e30c7a7953f62e64292dbd5d3f3 --fuzzTime 60 --no-versifier test/decode.jsfuzz.js corpus",
     "cover:clean": "rimraf .nyc_output coverage/",
     "cover:report": "npx nyc report --reporter=text-summary --reporter=html --reporter=json",
@@ -81,6 +82,7 @@
     "rimraf": "latest",
     "ts-loader": "latest",
     "ts-node": "latest",
+    "tsimp": "latest",
     "typescript": "latest",
     "webpack": "latest",
     "webpack-cli": "latest"

src/CachedKeyDecoder.ts

@@ -1,4 +1,4 @@
-import { utf8DecodeJs } from "./utils/utf8";
+import { utf8DecodeJs } from "./utils/utf8.ts";
 
 const DEFAULT_MAX_KEY_LENGTH = 16;
 const DEFAULT_MAX_LENGTH_PER_KEY = 16;

src/Decoder.ts

@@ -1,11 +1,11 @@
-import { prettyByte } from "./utils/prettyByte";
-import { ExtensionCodec, ExtensionCodecType } from "./ExtensionCodec";
-import { getInt64, getUint64, UINT32_MAX } from "./utils/int";
-import { utf8Decode } from "./utils/utf8";
-import { ensureUint8Array } from "./utils/typedArrays";
-import { CachedKeyDecoder, KeyDecoder } from "./CachedKeyDecoder";
-import { DecodeError } from "./DecodeError";
-import type { ContextOf } from "./context";
+import { prettyByte } from "./utils/prettyByte.ts";
+import { ExtensionCodec, ExtensionCodecType } from "./ExtensionCodec.ts";
+import { getInt64, getUint64, UINT32_MAX } from "./utils/int.ts";
+import { utf8Decode } from "./utils/utf8.ts";
+import { ensureUint8Array } from "./utils/typedArrays.ts";
+import { CachedKeyDecoder, KeyDecoder } from "./CachedKeyDecoder.ts";
+import { DecodeError } from "./DecodeError.ts";
+import type { ContextOf } from "./context.ts";
 
 export type DecoderOptions<ContextType = undefined> = Readonly<
   Partial<{

src/Encoder.ts

@@ -1,9 +1,9 @@
-import { utf8Count, utf8Encode } from "./utils/utf8";
-import { ExtensionCodec, ExtensionCodecType } from "./ExtensionCodec";
-import { setInt64, setUint64 } from "./utils/int";
-import { ensureUint8Array } from "./utils/typedArrays";
-import type { ExtData } from "./ExtData";
-import type { ContextOf } from "./context";
+import { utf8Count, utf8Encode } from "./utils/utf8.ts";
+import { ExtensionCodec, ExtensionCodecType } from "./ExtensionCodec.ts";
+import { setInt64, setUint64 } from "./utils/int.ts";
+import { ensureUint8Array } from "./utils/typedArrays.ts";
+import type { ExtData } from "./ExtData.ts";
+import type { ContextOf } from "./context.ts";
 
 export const DEFAULT_MAX_DEPTH = 100;
 export const DEFAULT_INITIAL_BUFFER_SIZE = 2048;

src/ExtensionCodec.ts

@@ -1,7 +1,7 @@
 // ExtensionCodec to handle MessagePack extensions
 
-import { ExtData } from "./ExtData";
-import { timestampExtension } from "./timestamp";
+import { ExtData } from "./ExtData.ts";
+import { timestampExtension } from "./timestamp.ts";
 
 export type ExtensionDecoderType<ContextType> = (
   data: Uint8Array,

src/decode.ts

@@ -1,6 +1,6 @@
-import { Decoder } from "./Decoder";
-import type { DecoderOptions } from "./Decoder";
-import type { SplitUndefined } from "./context";
+import { Decoder } from "./Decoder.ts";
+import type { DecoderOptions } from "./Decoder.ts";
+import type { SplitUndefined } from "./context.ts";
 
 /**
  * It decodes a single MessagePack object in a buffer.

src/decodeAsync.ts

@@ -1,8 +1,8 @@
-import { Decoder } from "./Decoder";
-import { ensureAsyncIterable } from "./utils/stream";
-import type { DecoderOptions } from "./Decoder";
-import type { ReadableStreamLike } from "./utils/stream";
-import type { SplitUndefined } from "./context";
+import { Decoder } from "./Decoder.ts";
+import { ensureAsyncIterable } from "./utils/stream.ts";
+import type { DecoderOptions } from "./Decoder.ts";
+import type { ReadableStreamLike } from "./utils/stream.ts";
+import type { SplitUndefined } from "./context.ts";
 
 /**
  * @throws {@link RangeError} if the buffer is incomplete, including the case where the buffer is empty.

src/encode.ts

@@ -1,6 +1,6 @@
-import { Encoder } from "./Encoder";
-import type { EncoderOptions } from "./Encoder";
-import type { SplitUndefined } from "./context";
+import { Encoder } from "./Encoder.ts";
+import type { EncoderOptions } from "./Encoder.ts";
+import type { SplitUndefined } from "./context.ts";
 
 /**
  * It encodes `value` in the MessagePack format and