From f49bfd1428b4a4e9b1ae6823d5e209e54d6f266f Mon Sep 17 00:00:00 2001
From: Bryan Housel <bhousel@gmail.com>
Date: Thu, 16 Oct 2025 11:11:23 -0400
Subject: [PATCH] Let's give bun a try

Bun is a new JavaScript runtime with everything built in.
It seems like it could be a lot easier than using a bunch of tools.
It also is a bit faster and has some improvements to security.
This replaces node, c8, esbuild, taze, maybe some other things.

This commit also upgrades our eslint config to work with v9.
---
 .eslintrc                      |  63 ----------
 .github/workflows/build.yml    |  17 +--
 .gitignore                     |  13 +-
 CONTRIBUTING.md                |  31 +++++
 README.md                      |   8 +-
 RELEASE.md                     |  32 +++--
 bun.lock                       | 218 +++++++++++++++++++++++++++++++++
 bunfig.toml                    |   8 ++
 eslint.config.js               | 101 +++++++++++++++
 package.json                   |  45 +++----
 scripts/build.ts               |  29 +++++
 index.d.ts => src/diff3.d.ts   |   0
 index.mjs => src/diff3.mjs     |   1 -
 src/index.ts                   |   2 +
 test/LCS.test.js               |  11 +-
 test/diff3Merge.test.js        |  23 ++--
 test/diff3MergeRegions.test.js |  11 +-
 test/diffComm.test.js          |  11 +-
 test/diffIndices.test.js       |  11 +-
 test/diffPatch.test.js         |  35 +++---
 test/merge.test.js             |  15 +--
 test/mergeDiff3.test.js        |  15 +--
 test/mergeDigIn.test.js        |  13 +-
 tsconfig.json                  |  20 +++
 24 files changed, 543 insertions(+), 190 deletions(-)
 delete mode 100644 .eslintrc
 create mode 100644 CONTRIBUTING.md
 create mode 100644 bun.lock
 create mode 100644 bunfig.toml
 create mode 100644 eslint.config.js
 create mode 100644 scripts/build.ts
 rename index.d.ts => src/diff3.d.ts (100%)
 rename index.mjs => src/diff3.mjs (99%)
 create mode 100644 src/index.ts
 create mode 100644 tsconfig.json

diff --git a/.eslintrc b/.eslintrc
deleted file mode 100644
index a4201be..0000000
--- a/.eslintrc
+++ /dev/null
@@ -1,63 +0,0 @@
-{
-    "env": {
-        "node": true,
-        "es6": true
-    },
-    "parserOptions": {
-        "ecmaVersion": 6,
-        "sourceType": "module"
-    },
-    "extends": [
-        "eslint:recommended"
-    ],
-    "rules": {
-        "dot-notation": "error",
-        "eqeqeq": ["error", "smart"],
-        "indent": ["off", 4],
-        "keyword-spacing": "error",
-        "linebreak-style": ["error", "unix"],
-        "no-caller": "error",
-        "no-catch-shadow": "error",
-        "no-console": "warn",
-        "no-div-regex": "error",
-        "no-extend-native": "error",
-        "no-extra-bind": "error",
-        "no-floating-decimal": "error",
-        "no-implied-eval": "error",
-        "no-invalid-this": "error",
-        "no-iterator": "error",
-        "no-labels": "error",
-        "no-label-var": "error",
-        "no-lone-blocks": "error",
-        "no-loop-func": "error",
-        "no-multi-str": "error",
-        "no-native-reassign": "error",
-        "no-new": "error",
-        "no-new-func": "error",
-        "no-new-wrappers": "error",
-        "no-octal": "error",
-        "no-octal-escape": "error",
-        "no-process-env": "error",
-        "no-proto": "error",
-        "no-return-assign": "off",
-        "no-script-url": "error",
-        "no-self-compare": "error",
-        "no-sequences": "error",
-        "no-shadow": "off",
-        "no-shadow-restricted-names": "error",
-        "no-throw-literal": "error",
-        "no-unneeded-ternary": "error",
-        "no-unused-expressions": "error",
-        "no-unexpected-multiline": "error",
-        "no-unused-vars": "warn",
-        "no-void": "error",
-        "no-warning-comments": "warn",
-        "no-with": "error",
-        "no-use-before-define": ["off", "nofunc"],
-        "semi": ["error", "always"],
-        "semi-spacing": "error",
-        "space-unary-ops": "error",
-        "wrap-regex": "off",
-        "quotes": ["error", "single"]
-    }
-}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5a60071..f2e7fae 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,13 +16,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: ['18', '20', '22']
+        bun-version: ['1.3']
 
     steps:
-    - uses: actions/checkout@v4
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
+    - uses: actions/checkout@v5
+    - name: Use Bun ${{ matrix.bun-version }}
+      uses: oven-sh/setup-bun@v2
       with:
-        node-version: ${{ matrix.node-version }}
-    - run: npm install
-    - run: npm run all
+        bun-version: ${{ matrix.bun-version }}
+    - run: bun install
+    - run: |
+        echo "::remove-matcher owner=eslint-compact::"
+        echo "::remove-matcher owner=eslint-stylish::"
+    - run: bun run all
diff --git a/.gitignore b/.gitignore
index 347fc98..0b4b4b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,14 +1,9 @@
+/coverage
+/dist
+/node_modules
+
 .DS_Store
-.esm-cache
 .vscode
-.coverage
-
-.nyc_output/
-built/
-coverage/
-dist/
-node_modules/
-
 npm-debug.log
 lerna-debug.log
 package-lock.json
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..6976ddb
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,31 @@
+# Contributing
+
+This project uses **GitHub** to track issues and manage our source code.
+- Check out the [Git Guides](https://github.com/git-guides) to learn more.
+
+This project uses the **JavaScript** programming language.
+- [MDN's JavaScript guide](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide) is a great resource for learning about JavaScript.
+
+This project uses the **TypeScript** programming language.
+- Check out the [TypeScript Docs](https://www.typescriptlang.org/docs/) to learn more.
+- (It's a superset of JavaScript, so knowing that already will help you a lot).
+
+This project uses **Bun** as our development environment.
+- Check out the [Bun Docs](https://bun.com/docs) to learn more.
+- (It's similar to other JavaScript tools like Node/Jest/Esbuild/Vite, so knowing any of those already will help you a lot).
+- Bun supports both JavaScript and TypeScript.
+
+If you want to contribute to node-diff3, you'll probably need to:
+- [Install Bun](https://bun.com/docs/installation)
+- `git clone` node-diff3
+- `cd` into the project folder
+- `bun install` the dependencies
+
+As you change things, you'll want to `bun run all` to ensure that things are working.
+(This command just runs `clean`, `lint`, `build`, and `test`.)
+
+It's also good to check on the dependencies sometimes with commands like:
+- `bun outdated`  - what packages have updates available?
+- `bun update --interactive`  - choose which updates to apply
+
+Try to keep things simple!
diff --git a/README.md b/README.md
index 082accc..12f451e 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ You can also use **node-diff3** directly in a web browser.  A good way to do thi
 When you load this file in a `<script>` tag, you'll get a `Diff3` global to use elsewhere in your scripts:
 ```html
 <head>
-<script src="https://cdn.jsdelivr.net/npm/node-diff3@3.1/dist/index.iife.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/node-diff3@3.1/dist/diff3.iife.min.js"></script>
 </head>
 …
 <script>
@@ -54,6 +54,12 @@ When you load this file in a `<script>` tag, you'll get a `Diff3` global to use
 
 &nbsp;
 
+## Contributing
+
+See the [CONTRIBUTING.md](CONTRIBUTING.md) file for more info.
+
+&nbsp;
+
 ## API Reference
 
 * [3-way diff and merging](#3-way-diff-and-merging)
diff --git a/RELEASE.md b/RELEASE.md
index 5fe2716..d2eb6f0 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,18 +1,26 @@
 ## Release Checklist
 
 #### Update version, tag, and publish
+
 ```bash
-$ git checkout main
-$ npm install
-$ npm run test
-$ Update CHANGELOG
-$ Update version number in `package.json`
-$ git add .
-$ git commit -m 'vA.B.C'
-$ git tag vA.B.C
-$ git push origin main vA.B.C
-$ npm publish
+# Make sure your main branch is up to date and all tests pass
+git checkout main
+git pull origin
+bun install
+bun run all
+
+# Pick a version, see https://semver.org/ - for example: 'A.B.C' or 'A.B.C-pre.D'
+# Update version number in `package.json`
+# Update CHANGELOG.md
 
+export VERSION=vA.B.C-pre.D
+git add . && git commit -m "$VERSION"
+git tag "$VERSION"
+git push origin main "$VERSION"
+bun publish
 ```
-* Open https://github.com/bhousel/node-diff3/tags
-* Click "Add Release Notes" and link to the CHANGELOG#version
+
+Set as latest release on GitHub:
+- Open https://github.com/bhousel/node-diff3/blob/main/CHANGELOG.md and copy the URL to the new release
+- Open https://github.com/bhousel/node-diff3/tags and pick the new tag you just pushed
+- There should be a link like "create a release from the tag", click that, and paste in the link to the changelog.
diff --git a/bun.lock b/bun.lock
new file mode 100644
index 0000000..4423a99
--- /dev/null
+++ b/bun.lock
@@ -0,0 +1,218 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "node-diff3",
+      "devDependencies": {
+        "@types/bun": "^1.3.0",
+        "eslint": "^9.10.0",
+        "npm-run-all2": "^8.0.4",
+      },
+    },
+  },
+  "packages": {
+    "@aashutoshrathi/word-wrap": ["@aashutoshrathi/word-wrap@1.2.6", "", {}, "sha512-1Yjs2SvM8TflER/OD3cOjhWWOZb58A2t7wpE2S9XfBYTiIl+XFhQG2bjy4Pu1I+EAlCNUzRDYDdFwFYUKvXcIA=="],
+
+    "@eslint-community/eslint-utils": ["@eslint-community/eslint-utils@4.9.0", "", { "dependencies": { "eslint-visitor-keys": "^3.4.3" }, "peerDependencies": { "eslint": "^6.0.0 || ^7.0.0 || >=8.0.0" } }, "sha512-ayVFHdtZ+hsq1t2Dy24wCmGXGe4q9Gu3smhLYALJrr473ZH27MsnSL+LKUlimp4BWJqMDMLmPpx/Q9R3OAlL4g=="],
+
+    "@eslint-community/regexpp": ["@eslint-community/regexpp@4.12.1", "", {}, "sha512-CCZCDJuduB9OUkFkY2IgppNZMi2lBQgD2qzwXkEia16cge2pijY/aXi96CJMquDMn3nJdlPV1A5KrJEXwfLNzQ=="],
+
+    "@eslint/config-array": ["@eslint/config-array@0.21.0", "", { "dependencies": { "@eslint/object-schema": "^2.1.6", "debug": "^4.3.1", "minimatch": "^3.1.2" } }, "sha512-ENIdc4iLu0d93HeYirvKmrzshzofPw6VkZRKQGe9Nv46ZnWUzcF1xV01dcvEg/1wXUR61OmmlSfyeyO7EvjLxQ=="],
+
+    "@eslint/config-helpers": ["@eslint/config-helpers@0.4.0", "", { "dependencies": { "@eslint/core": "^0.16.0" } }, "sha512-WUFvV4WoIwW8Bv0KeKCIIEgdSiFOsulyN0xrMu+7z43q/hkOLXjvb5u7UC9jDxvRzcrbEmuZBX5yJZz1741jog=="],
+
+    "@eslint/core": ["@eslint/core@0.16.0", "", { "dependencies": { "@types/json-schema": "^7.0.15" } }, "sha512-nmC8/totwobIiFcGkDza3GIKfAw1+hLiYVrh3I1nIomQ8PEr5cxg34jnkmGawul/ep52wGRAcyeDCNtWKSOj4Q=="],
+
+    "@eslint/eslintrc": ["@eslint/eslintrc@3.3.1", "", { "dependencies": { "ajv": "^6.12.4", "debug": "^4.3.2", "espree": "^10.0.1", "globals": "^14.0.0", "ignore": "^5.2.0", "import-fresh": "^3.2.1", "js-yaml": "^4.1.0", "minimatch": "^3.1.2", "strip-json-comments": "^3.1.1" } }, "sha512-gtF186CXhIl1p4pJNGZw8Yc6RlshoePRvE0X91oPGb3vZ8pM3qOS9W9NGPat9LziaBV7XrJWGylNQXkGcnM3IQ=="],
+
+    "@eslint/js": ["@eslint/js@9.37.0", "", {}, "sha512-jaS+NJ+hximswBG6pjNX0uEJZkrT0zwpVi3BA3vX22aFGjJjmgSTSmPpZCRKmoBL5VY/M6p0xsSJx7rk7sy5gg=="],
+
+    "@eslint/object-schema": ["@eslint/object-schema@2.1.6", "", {}, "sha512-RBMg5FRL0I0gs51M/guSAj5/e14VQ4tpZnQNWwuDT66P14I43ItmPfIZRhO9fUVIPOAQXU47atlywZ/czoqFPA=="],
+
+    "@eslint/plugin-kit": ["@eslint/plugin-kit@0.4.0", "", { "dependencies": { "@eslint/core": "^0.16.0", "levn": "^0.4.1" } }, "sha512-sB5uyeq+dwCWyPi31B2gQlVlo+j5brPlWx4yZBrEaRo/nhdDE8Xke1gsGgtiBdaBTxuTkceLVuVt/pclrasb0A=="],
+
+    "@humanfs/core": ["@humanfs/core@0.19.1", "", {}, "sha512-5DyQ4+1JEUzejeK1JGICcideyfUbGixgS9jNgex5nqkW+cY7WZhxBigmieN5Qnw9ZosSNVC9KQKyb+GUaGyKUA=="],
+
+    "@humanfs/node": ["@humanfs/node@0.16.7", "", { "dependencies": { "@humanfs/core": "^0.19.1", "@humanwhocodes/retry": "^0.4.0" } }, "sha512-/zUx+yOsIrG4Y43Eh2peDeKCxlRt/gET6aHfaKpuq267qXdYDFViVHfMaLyygZOnl0kGWxFIgsBy8QFuTLUXEQ=="],
+
+    "@humanwhocodes/module-importer": ["@humanwhocodes/module-importer@1.0.1", "", {}, "sha512-bxveV4V8v5Yb4ncFTT3rPSgZBOpCkjfK0y4oVVVJwIuDVBRMDXrPyXRL988i5ap9m9bnyEEjWfm5WkBmtffLfA=="],
+
+    "@humanwhocodes/retry": ["@humanwhocodes/retry@0.4.3", "", {}, "sha512-bV0Tgo9K4hfPCek+aMAn81RppFKv2ySDQeMoSZuvTASywNTnVJCArCZE2FWqpvIatKu7VMRLWlR1EazvVhDyhQ=="],
+
+    "@types/bun": ["@types/bun@1.3.0", "", { "dependencies": { "bun-types": "1.3.0" } }, "sha512-+lAGCYjXjip2qY375xX/scJeVRmZ5cY0wyHYyCYxNcdEXrQ4AOe3gACgd4iQ8ksOslJtW4VNxBJ8llUwc3a6AA=="],
+
+    "@types/estree": ["@types/estree@1.0.8", "", {}, "sha512-dWHzHa2WqEXI/O1E9OjrocMTKJl2mSrEolh1Iomrv6U+JuNwaHXsXx9bLu5gG7BUWFIN0skIQJQ/L1rIex4X6w=="],
+
+    "@types/json-schema": ["@types/json-schema@7.0.15", "", {}, "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA=="],
+
+    "@types/node": ["@types/node@24.7.2", "", { "dependencies": { "undici-types": "~7.14.0" } }, "sha512-/NbVmcGTP+lj5oa4yiYxxeBjRivKQ5Ns1eSZeB99ExsEQ6rX5XYU1Zy/gGxY/ilqtD4Etx9mKyrPxZRetiahhA=="],
+
+    "@types/react": ["@types/react@19.2.2", "", { "dependencies": { "csstype": "^3.0.2" } }, "sha512-6mDvHUFSjyT2B2yeNx2nUgMxh9LtOWvkhIU3uePn2I2oyNymUAX1NIsdgviM4CH+JSrp2D2hsMvJOkxY+0wNRA=="],
+
+    "acorn": ["acorn@8.15.0", "", { "bin": { "acorn": "bin/acorn" } }, "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg=="],
+
+    "acorn-jsx": ["acorn-jsx@5.3.2", "", { "peerDependencies": { "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0" } }, "sha512-rq9s+JNhf0IChjtDXxllJ7g41oZk5SlXtp0LHwyA5cejwn7vKmKp4pPri6YEePv2PU65sAsegbXtIinmDFDXgQ=="],
+
+    "ajv": ["ajv@6.12.6", "", { "dependencies": { "fast-deep-equal": "^3.1.1", "fast-json-stable-stringify": "^2.0.0", "json-schema-traverse": "^0.4.1", "uri-js": "^4.2.2" } }, "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g=="],
+
+    "ansi-styles": ["ansi-styles@6.2.1", "", {}, "sha512-bN798gFfQX+viw3R7yrGWRqnrN2oRkEkUjjl4JNn4E8GxxbjtG3FbrEIIY3l8/hrwUwIeCZvi4QuOTP4MErVug=="],
+
+    "argparse": ["argparse@2.0.1", "", {}, "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q=="],
+
+    "balanced-match": ["balanced-match@1.0.2", "", {}, "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="],
+
+    "brace-expansion": ["brace-expansion@1.1.11", "", { "dependencies": { "balanced-match": "^1.0.0", "concat-map": "0.0.1" } }, "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA=="],
+
+    "bun-types": ["bun-types@1.3.0", "", { "dependencies": { "@types/node": "*" }, "peerDependencies": { "@types/react": "^19" } }, "sha512-u8X0thhx+yJ0KmkxuEo9HAtdfgCBaM/aI9K90VQcQioAmkVp3SG3FkwWGibUFz3WdXAdcsqOcbU40lK7tbHdkQ=="],
+
+    "callsites": ["callsites@3.1.0", "", {}, "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ=="],
+
+    "chalk": ["chalk@4.1.2", "", { "dependencies": { "ansi-styles": "^4.1.0", "supports-color": "^7.1.0" } }, "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA=="],
+
+    "color-convert": ["color-convert@2.0.1", "", { "dependencies": { "color-name": "~1.1.4" } }, "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ=="],
+
+    "color-name": ["color-name@1.1.4", "", {}, "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA=="],
+
+    "concat-map": ["concat-map@0.0.1", "", {}, "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="],
+
+    "cross-spawn": ["cross-spawn@7.0.6", "", { "dependencies": { "path-key": "^3.1.0", "shebang-command": "^2.0.0", "which": "^2.0.1" } }, "sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA=="],
+
+    "csstype": ["csstype@3.1.3", "", {}, "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw=="],
+
+    "debug": ["debug@4.3.5", "", { "dependencies": { "ms": "2.1.2" } }, "sha512-pt0bNEmneDIvdL1Xsd9oDQ/wrQRkXDT4AUWlNZNPKvW5x/jyO9VFXkJUP07vQ2upmw5PlaITaPKc31jK13V+jg=="],
+
+    "deep-is": ["deep-is@0.1.4", "", {}, "sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ=="],
+
+    "escape-string-regexp": ["escape-string-regexp@4.0.0", "", {}, "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA=="],
+
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+    "eslint-visitor-keys": ["eslint-visitor-keys@4.2.1", "", {}, "sha512-Uhdk5sfqcee/9H/rCOJikYz67o0a2Tw2hGRPOG2Y1R2dg7brRe1uG0yaNQDHu+TO/uQPF/5eCapvYSmHUjt7JQ=="],
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+    "espree": ["espree@10.4.0", "", { "dependencies": { "acorn": "^8.15.0", "acorn-jsx": "^5.3.2", "eslint-visitor-keys": "^4.2.1" } }, "sha512-j6PAQ2uUr79PZhBjP5C5fhl8e39FmRnOjsD5lGnWrFU8i2G776tBK7+nP8KuQUTTyAZUwfQqXAgrVH5MbH9CYQ=="],
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+    "esutils": ["esutils@2.0.3", "", {}, "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g=="],
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+    "fast-levenshtein": ["fast-levenshtein@2.0.6", "", {}, "sha512-DCXu6Ifhqcks7TZKY3Hxp3y6qphY5SJZmrWMDrKcERSOXWQdMhU9Ig/PYrzyw/ul9jOIyh0N4M0tbC5hodg8dw=="],
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+    "flatted": ["flatted@3.3.1", "", {}, "sha512-X8cqMLLie7KsNUDSdzeN8FYK9rEt4Dt67OsG/DNGnYTSDBG4uFAJFBnUeiV+zCVAvwFy56IjM9sH51jVaEhNxw=="],
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+    "glob-parent": ["glob-parent@6.0.2", "", { "dependencies": { "is-glob": "^4.0.3" } }, "sha512-XxwI8EOhVQgWp6iDL+3b0r86f4d6AX6zSU55HfB4ydCEuXLXc5FcYeOu+nnGftS4TEju/11rt4KJPTMgbfmv4A=="],
+
+    "globals": ["globals@14.0.0", "", {}, "sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ=="],
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+    "has-flag": ["has-flag@4.0.0", "", {}, "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ=="],
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+    "ignore": ["ignore@5.3.1", "", {}, "sha512-5Fytz/IraMjqpwfd34ke28PTVMjZjJG2MPn5t7OE4eUCUNf8BAa7b5WUS9/Qvr6mwOQS7Mk6vdsMno5he+T8Xw=="],
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+
+    "imurmurhash": ["imurmurhash@0.1.4", "", {}, "sha1-khi5srkoojixPcT7a21XbyMUU+o="],
+
+    "is-extglob": ["is-extglob@2.1.1", "", {}, "sha1-qIwCU1eR8C7TfHahueqXc8gz+MI="],
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+    "is-glob": ["is-glob@4.0.3", "", { "dependencies": { "is-extglob": "^2.1.1" } }, "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg=="],
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+    "isexe": ["isexe@3.1.1", "", {}, "sha512-LpB/54B+/2J5hqQ7imZHfdU31OlgQqx7ZicVlkm9kzg9/w8GKLEcFfJl/t7DCEDueOyBAD6zCCwTO6Fzs0NoEQ=="],
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+    "js-yaml": ["js-yaml@4.1.0", "", { "dependencies": { "argparse": "^2.0.1" }, "bin": "bin/js-yaml.js" }, "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA=="],
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+    "json-buffer": ["json-buffer@3.0.1", "", {}, "sha512-4bV5BfR2mqfQTJm+V5tPPdf+ZpuhiIvTuAB5g8kcrXOZpTT/QwwVRWBywX1ozr6lEuPdbHxwaJlm9G6mI2sfSQ=="],
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+    "json-parse-even-better-errors": ["json-parse-even-better-errors@4.0.0", "", {}, "sha512-lR4MXjGNgkJc7tkQ97kb2nuEMnNCyU//XYVH0MKTGcXEiSudQ5MKGKen3C5QubYy0vmq+JGitUg92uuywGEwIA=="],
+
+    "json-schema-traverse": ["json-schema-traverse@0.4.1", "", {}, "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="],
+
+    "json-stable-stringify-without-jsonify": ["json-stable-stringify-without-jsonify@1.0.1", "", {}, "sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE="],
+
+    "keyv": ["keyv@4.5.4", "", { "dependencies": { "json-buffer": "3.0.1" } }, "sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw=="],
+
+    "levn": ["levn@0.4.1", "", { "dependencies": { "prelude-ls": "^1.2.1", "type-check": "~0.4.0" } }, "sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ=="],
+
+    "locate-path": ["locate-path@6.0.0", "", { "dependencies": { "p-locate": "^5.0.0" } }, "sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw=="],
+
+    "lodash.merge": ["lodash.merge@4.6.2", "", {}, "sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ=="],
+
+    "memorystream": ["memorystream@0.3.1", "", {}, "sha1-htcJCzDORV1j+64S3aUaR93K+bI="],
+
+    "minimatch": ["minimatch@3.1.2", "", { "dependencies": { "brace-expansion": "^1.1.7" } }, "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw=="],
+
+    "ms": ["ms@2.1.2", "", {}, "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="],
+
+    "natural-compare": ["natural-compare@1.4.0", "", {}, "sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc="],
+
+    "npm-normalize-package-bin": ["npm-normalize-package-bin@4.0.0", "", {}, "sha512-TZKxPvItzai9kN9H/TkmCtx/ZN/hvr3vUycjlfmH0ootY9yFBzNOpiXAdIn1Iteqsvk4lQn6B5PTrt+n6h8k/w=="],
+
+    "npm-run-all2": ["npm-run-all2@8.0.4", "", { "dependencies": { "ansi-styles": "^6.2.1", "cross-spawn": "^7.0.6", "memorystream": "^0.3.1", "picomatch": "^4.0.2", "pidtree": "^0.6.0", "read-package-json-fast": "^4.0.0", "shell-quote": "^1.7.3", "which": "^5.0.0" }, "bin": { "run-p": "bin/run-p/index.js", "run-s": "bin/run-s/index.js", "npm-run-all": "bin/npm-run-all/index.js", "npm-run-all2": "bin/npm-run-all/index.js" } }, "sha512-wdbB5My48XKp2ZfJUlhnLVihzeuA1hgBnqB2J9ahV77wLS+/YAJAlN8I+X3DIFIPZ3m5L7nplmlbhNiFDmXRDA=="],
+
+    "optionator": ["optionator@0.9.3", "", { "dependencies": { "@aashutoshrathi/word-wrap": "^1.2.3", "deep-is": "^0.1.3", "fast-levenshtein": "^2.0.6", "levn": "^0.4.1", "prelude-ls": "^1.2.1", "type-check": "^0.4.0" } }, "sha512-JjCoypp+jKn1ttEFExxhetCKeJt9zhAgAve5FXHixTvFDW/5aEktX9bufBKLRRMdU7bNtpLfcGu94B3cdEJgjg=="],
+
+    "p-limit": ["p-limit@3.1.0", "", { "dependencies": { "yocto-queue": "^0.1.0" } }, "sha512-TYOanM3wGwNGsZN2cVTYPArw454xnXj5qmWF1bEoAc4+cU/ol7GVh7odevjp1FNHduHc3KZMcFduxU5Xc6uJRQ=="],
+
+    "p-locate": ["p-locate@5.0.0", "", { "dependencies": { "p-limit": "^3.0.2" } }, "sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw=="],
+
+    "parent-module": ["parent-module@1.0.1", "", { "dependencies": { "callsites": "^3.0.0" } }, "sha512-GQ2EWRpQV8/o+Aw8YqtfZZPfNRWZYkbidE9k5rpl/hC3vtHHBfGm2Ifi6qWV+coDGkrUKZAxE3Lot5kcsRlh+g=="],
+
+    "path-exists": ["path-exists@4.0.0", "", {}, "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w=="],
+
+    "path-key": ["path-key@3.1.1", "", {}, "sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q=="],
+
+    "picomatch": ["picomatch@4.0.3", "", {}, "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q=="],
+
+    "pidtree": ["pidtree@0.6.0", "", { "bin": { "pidtree": "bin/pidtree.js" } }, "sha512-eG2dWTVw5bzqGRztnHExczNxt5VGsE6OwTeCG3fdUf9KBsZzO3R5OIIIzWR+iZA0NtZ+RDVdaoE2dK1cn6jH4g=="],
+
+    "prelude-ls": ["prelude-ls@1.2.1", "", {}, "sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g=="],
+
+    "punycode": ["punycode@2.3.1", "", {}, "sha512-vYt7UD1U9Wg6138shLtLOvdAu+8DsC/ilFtEVHcH+wydcSpNE20AfSOduf6MkRFahL5FY7X1oU7nKVZFtfq8Fg=="],
+
+    "read-package-json-fast": ["read-package-json-fast@4.0.0", "", { "dependencies": { "json-parse-even-better-errors": "^4.0.0", "npm-normalize-package-bin": "^4.0.0" } }, "sha512-qpt8EwugBWDw2cgE2W+/3oxC+KTez2uSVR8JU9Q36TXPAGCaozfQUs59v4j4GFpWTaw0i6hAZSvOmu1J0uOEUg=="],
+
+    "resolve-from": ["resolve-from@4.0.0", "", {}, "sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g=="],
+
+    "shebang-command": ["shebang-command@2.0.0", "", { "dependencies": { "shebang-regex": "^3.0.0" } }, "sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA=="],
+
+    "shebang-regex": ["shebang-regex@3.0.0", "", {}, "sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A=="],
+
+    "shell-quote": ["shell-quote@1.8.3", "", {}, "sha512-ObmnIF4hXNg1BqhnHmgbDETF8dLPCggZWBjkQfhZpbszZnYur5DUljTcCHii5LC3J5E0yeO/1LIMyH+UvHQgyw=="],
+
+    "strip-json-comments": ["strip-json-comments@3.1.1", "", {}, "sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig=="],
+
+    "supports-color": ["supports-color@7.2.0", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw=="],
+
+    "type-check": ["type-check@0.4.0", "", { "dependencies": { "prelude-ls": "^1.2.1" } }, "sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew=="],
+
+    "undici-types": ["undici-types@7.14.0", "", {}, "sha512-QQiYxHuyZ9gQUIrmPo3IA+hUl4KYk8uSA7cHrcKd/l3p1OTpZcM0Tbp9x7FAtXdAYhlasd60ncPpgu6ihG6TOA=="],
+
+    "uri-js": ["uri-js@4.4.1", "", { "dependencies": { "punycode": "^2.1.0" } }, "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg=="],
+
+    "which": ["which@5.0.0", "", { "dependencies": { "isexe": "^3.1.1" }, "bin": { "node-which": "bin/which.js" } }, "sha512-JEdGzHwwkrbWoGOlIHqQ5gtprKGOenpDHpxE9zVR1bWbOtYRyPPHMe9FaP6x61CmNaTThSkb0DAJte5jD+DmzQ=="],
+
+    "yocto-queue": ["yocto-queue@0.1.0", "", {}, "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q=="],
+
+    "@eslint-community/eslint-utils/eslint-visitor-keys": ["eslint-visitor-keys@3.4.3", "", {}, "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag=="],
+
+    "chalk/ansi-styles": ["ansi-styles@4.3.0", "", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
+
+    "cross-spawn/which": ["which@2.0.2", "", { "dependencies": { "isexe": "^2.0.0" }, "bin": { "node-which": "bin/node-which" } }, "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA=="],
+
+    "cross-spawn/which/isexe": ["isexe@2.0.0", "", {}, "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="],
+  }
+}
diff --git a/bunfig.toml b/bunfig.toml
new file mode 100644
index 0000000..d493da5
--- /dev/null
+++ b/bunfig.toml
@@ -0,0 +1,8 @@
+[install]
+# Only install package versions published at least 3 days ago
+minimumReleaseAge = 259200 # seconds
+
+[run]
+# equivalent to `bun --bun` for all `bun run` commands
+bun = true
+shell = "bun"
\ No newline at end of file
diff --git a/eslint.config.js b/eslint.config.js
new file mode 100644
index 0000000..de44f63
--- /dev/null
+++ b/eslint.config.js
@@ -0,0 +1,101 @@
+import js from '@eslint/js';
+
+const rules = {
+  rules: {
+    "accessor-pairs": "error",
+    "array-callback-return": "warn",
+    "arrow-spacing": "warn",
+    "block-scoped-var": "error",
+    "block-spacing": ["warn", "always"],
+    "brace-style": ["warn", "1tbs", { "allowSingleLine": true }],
+    "complexity": ["warn", 50],
+    "curly": ["warn", "multi-line"],
+    "default-case-last": "error",
+    "default-param-last": "error",
+    "dot-notation": "error",
+    "eqeqeq": ["error", "smart"],
+    "func-call-spacing": ["warn", "never"],
+    "grouped-accessor-pairs": "error",
+    "indent": ["off", 4],
+    "keyword-spacing": "error",
+    "linebreak-style": ["error", "unix"],
+    "no-await-in-loop": "error",
+    "no-caller": "error",
+    "no-catch-shadow": "error",
+    "no-console": "warn",
+    "no-constructor-return": "error",
+    "no-div-regex": "error",
+    "no-duplicate-imports": "warn",
+    "no-eq-null": "error",
+    "no-eval": "error",
+    "no-extend-native": "error",
+    "no-extra-bind": "error",
+    "no-extra-label": "error",
+    "no-floating-decimal": "error",
+    "no-global-assign": "error",
+    "no-implied-eval": "error",
+    "no-invalid-this": "off",
+    "no-iterator": "error",
+    "no-labels": "error",
+    "no-label-var": "error",
+    "no-lone-blocks": "error",
+    "no-loop-func": "error",
+    "no-loss-of-precision": "error",
+    "no-multi-str": "error",
+    "no-new": "error",
+    "no-new-func": "error",
+    "no-new-wrappers": "error",
+    "no-octal": "error",
+    "no-octal-escape": "error",
+    "no-process-env": "error",
+    "no-promise-executor-return": "error",
+    "no-proto": "error",
+    "no-prototype-builtins": "off",
+    "no-restricted-properties": "error",
+    "no-return-assign": "off",
+    "no-return-await": "error",
+    "no-script-url": "error",
+    "no-self-compare": "error",
+    "no-sequences": "error",
+    "no-shadow": "off",
+    "no-shadow-restricted-names": "error",
+    "no-template-curly-in-string": "warn",
+    "no-throw-literal": "error",
+    "no-trailing-spaces": "warn",
+    "no-undef": "error",
+    "no-undef-init": "warn",
+    "no-unexpected-multiline": "error",
+    "no-unneeded-ternary": "error",
+    "no-unmodified-loop-condition": "error",
+    "no-unreachable": "warn",
+    "no-unreachable-loop": "warn",
+    "no-unused-expressions": "error",
+    "no-unused-vars": ["warn", { "vars": "all", "args": "none", "caughtErrors": "none" }],
+    "no-use-before-define": ["off", "nofunc"],
+    "no-useless-backreference": "warn",
+    "no-useless-call": "warn",
+    "no-useless-computed-key": "warn",
+    "no-useless-concat": "warn",
+    "no-useless-constructor": "off",
+    "no-useless-escape": "off",
+    "no-useless-rename": "warn",
+    "no-void": "error",
+    "no-warning-comments": "warn",
+    "no-whitespace-before-property": "warn",
+    "no-with": "error",
+    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
+    "radix": ["error", "always"],
+    "require-atomic-updates": "error",
+    "require-await": "error",
+    "semi": ["error", "always"],
+    "semi-spacing": "error",
+    "space-unary-ops": "error",
+    "wrap-regex": "off"
+  }
+};
+
+export default [
+  js.configs.recommended,
+  rules
+];
+
diff --git a/package.json b/package.json
index 45c4f03..60b3267 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "3.1.2",
   "license": "MIT",
   "repository": "github:bhousel/node-diff3",
-  "description": "A node.js module for text diffing and three-way-merge.",
+  "description": "A JavaScript module for text diffing and three-way-merge.",
   "contributors": [
     "Bryan Housel <bhousel@gmail.com> (https://github.com/bhousel)"
   ],
@@ -14,50 +14,37 @@
     "gnu",
     "javascript",
     "merge",
-    "nodejs",
     "patch"
   ],
   "files": [
-    "index.mjs",
-    "index.d.ts",
-    "dist/"
+    "dist/",
+    "src/"
   ],
   "type": "module",
-  "source": "./index.mjs",
-  "types": "./index.d.ts",
-  "main": "./dist/index.cjs",
-  "module": "./index.mjs",
   "exports": {
-    ".": {
-      "import": {
-        "types": "./index.d.ts",
-        "default": "./index.mjs"
-      },
-      "require": "./dist/index.cjs"
-    }
+    "types": "./src/diff3.d.ts",
+    "import": "./dist/diff3.mjs",
+    "require": "./dist/diff3.cjs",
+    "browser": "./dist/diff3.iife.js"
   },
   "scripts": {
-    "all": "run-s clean test",
-    "clean": "shx rm -rf dist",
-    "build": "run-p build:**",
-    "build:browser": "esbuild ./index.mjs --platform=browser --format=iife --global-name=Diff3 --bundle --sourcemap --outfile=./dist/index.iife.js",
-    "build:cjs": "esbuild ./index.mjs --platform=node --format=cjs --sourcemap --outfile=./dist/index.cjs",
-    "lint": "eslint index.mjs test/*.js",
-    "test": "run-s build test:node",
-    "test:node": "c8 node --test test/*.js"
+    "all": "run-s clean lint build test",
+    "clean": "rm -rf ./dist",
+    "build": "bun ./scripts/build.ts",
+    "test": "bun test --dots --coverage ./test/*.js",
+    "lint": "eslint ./src/diff3.mjs ./test/*.js"
   },
   "devDependencies": {
-    "c8": "^10.1.2",
-    "esbuild": "^0.23.1",
-    "eslint": "^9.10.0",
-    "npm-run-all": "^4.1.5",
-    "shx": "^0.3.4"
+    "@types/bun": "^1.3.0",
+    "eslint": "^9.37.0",
+    "npm-run-all2": "^8.0.4"
   },
   "sideEffects": false,
   "publishConfig": {
     "access": "public"
   },
   "engines": {
+    "bun": ">=1.3.0",
     "node": ">=18"
   }
 }
diff --git a/scripts/build.ts b/scripts/build.ts
new file mode 100644
index 0000000..cc4c4b3
--- /dev/null
+++ b/scripts/build.ts
@@ -0,0 +1,29 @@
+
+await Promise.all([
+   Bun.build({
+    entrypoints: ['./src/index.ts'],
+    outdir: './dist',
+    target: 'browser',
+    format: 'iife',
+    sourcemap: 'linked',
+    naming: 'diff3.iife.[ext]'  // .iife.js
+  }),
+
+  Bun.build({
+    entrypoints: ['./src/diff3.mjs'],
+    outdir: './dist',
+    target: 'node',
+    format: 'cjs',
+    sourcemap: 'linked',
+    naming: 'diff3.c[ext]'  // .cjs
+  }),
+
+  Bun.build({
+    entrypoints: ['./src/diff3.mjs'],
+    outdir: './dist',
+    target: 'node',
+    format: 'esm',
+    sourcemap: 'linked',
+    naming: 'diff3.m[ext]'  // .mjs
+  })
+]);
diff --git a/index.d.ts b/src/diff3.d.ts
similarity index 100%
rename from index.d.ts
rename to src/diff3.d.ts
diff --git a/index.mjs b/src/diff3.mjs
similarity index 99%
rename from index.mjs
rename to src/diff3.mjs
index 91bf408..b8c1cda 100644
--- a/index.mjs
+++ b/src/diff3.mjs
@@ -22,7 +22,6 @@ export {
 //
 // Expects two arrays, finds longest common sequence
 function LCS(buffer1, buffer2) {
-
   let equivalenceClasses = {};
   for (let j = 0; j < buffer2.length; j++) {
     const item = buffer2[j];
diff --git a/src/index.ts b/src/index.ts
new file mode 100644
index 0000000..c0dc75a
--- /dev/null
+++ b/src/index.ts
@@ -0,0 +1,2 @@
+import * as Diff3 from './diff3.mjs';
+globalThis.Diff3 = Diff3;
diff --git a/test/LCS.test.js b/test/LCS.test.js
index 1cc4116..acda98c 100644
--- a/test/LCS.test.js
+++ b/test/LCS.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('LCS', async t => {
 
-  await t.test('returns the LCS of two arrays', t => {
+describe('LCS', () => {
+
+  it('returns the LCS of two arrays', () => {
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
     const result = Diff3.LCS(a, b);
diff --git a/test/diff3Merge.test.js b/test/diff3Merge.test.js
index 9a6d720..95cbb8b 100644
--- a/test/diff3Merge.test.js
+++ b/test/diff3Merge.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('diff3Merge', async t => {
 
-  await t.test('performs diff3 merge on arrays', t => {
+describe('diff3Merge', () => {
+
+  it('performs diff3 merge on arrays', () => {
     const o = ['AA', 'ZZ', '00', 'M', '99'];
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
@@ -60,7 +61,7 @@ test('diff3Merge', async t => {
   });
 
 
-  await t.test('strings split on whitespace by default to avoid surprises - issue #9', t => {
+  it('strings split on whitespace by default to avoid surprises - issue #9', () => {
     const o = 'was touring';
     const a = 'was here   touring';
     const b = 'was into touring';
@@ -78,7 +79,7 @@ test('diff3Merge', async t => {
     assert.deepEqual(result[2].conflict, undefined);
   });
 
-  await t.test('strings can optionally split on given separator', t => {
+  it('strings can optionally split on given separator', () => {
     const o = 'new hampshire, new mexico, north carolina';
     const a = 'new hampshire, new jersey,    north carolina';
     const b = 'new hampshire, new york, north carolina';
@@ -97,7 +98,7 @@ test('diff3Merge', async t => {
   });
 
 
-  await t.test('excludes false conflicts by default', t => {
+  it('excludes false conflicts by default', () => {
     const o = 'AA ZZ';
     const a = 'AA a b c ZZ';
     const b = 'AA a b c ZZ';
@@ -108,7 +109,7 @@ test('diff3Merge', async t => {
   });
 
 
-  await t.test('can include false conflicts with option', t => {
+  it('can include false conflicts with option', () => {
     const o = 'AA ZZ';
     const a = 'AA a b c ZZ';
     const b = 'AA a b c ZZ';
@@ -127,7 +128,7 @@ test('diff3Merge', async t => {
   });
 
 
-  await t.test('avoids improper hunk sorting - see openstreetmap/iD#3058', t => {
+  it('avoids improper hunk sorting - see openstreetmap/iD#3058', () => {
     const o = ['n4100522632', 'n4100697091', 'n4100697136', 'n4102671583', 'n4102671584', 'n4102671585', 'n4102671586', 'n4102671587', 'n4102671588', 'n4102677889', 'n4102677890', 'n4094374176'];
     const a = ['n4100522632', 'n4100697091', 'n4100697136', 'n-10000', 'n4102671583', 'n4102671584', 'n4102671585', 'n4102671586', 'n4102671587', 'n4102671588', 'n4102677889', 'n4102677890', 'n4094374176'];
     const b = ['n4100522632', 'n4100697091', 'n4100697136', 'n4102671583', 'n4102671584', 'n4102671585', 'n4102671586', 'n4102671587', 'n4102671588', 'n4102677889', 'n4105613618', 'n4102677890', 'n4105613617', 'n4094374176'];
@@ -138,7 +139,7 @@ test('diff3Merge', async t => {
   });
 
 
-  await t.test('yaml comparison - issue #46', t => {
+  it('yaml comparison - issue #46', () => {
     const o = `title: "title"
 description: "description"`;
     const a = `title: "title"
diff --git a/test/diff3MergeRegions.test.js b/test/diff3MergeRegions.test.js
index 5437f76..a2a1f71 100644
--- a/test/diff3MergeRegions.test.js
+++ b/test/diff3MergeRegions.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('diff3MergeRegions', async t => {
 
-  await t.test('returns results of 3-way diff from o,a,b arrays', t => {
+describe('diff3MergeRegions', () => {
+
+  it('returns results of 3-way diff from o,a,b arrays', () => {
     const o = ['AA', 'ZZ', '00', 'M', '99'];
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
diff --git a/test/diffComm.test.js b/test/diffComm.test.js
index 6f25498..e263f39 100644
--- a/test/diffComm.test.js
+++ b/test/diffComm.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('diffComm', async t => {
 
-  await t.test('returns a comm-style diff of two arrays', t => {
+describe('diffComm', () => {
+
+  it('returns a comm-style diff of two arrays', () => {
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
     const result = Diff3.diffComm(a, b);
diff --git a/test/diffIndices.test.js b/test/diffIndices.test.js
index 98fa66c..0d3ca39 100644
--- a/test/diffIndices.test.js
+++ b/test/diffIndices.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('diffIndices', async t => {
 
-  await t.test('returns array indices for differing regions of two arrays', t => {
+describe('diffIndices', () => {
+
+  it('returns array indices for differing regions of two arrays', () => {
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
     const result = Diff3.diffIndices(a, b);
diff --git a/test/diffPatch.test.js b/test/diffPatch.test.js
index ea5fea6..5cd17a7 100644
--- a/test/diffPatch.test.js
+++ b/test/diffPatch.test.js
@@ -1,14 +1,15 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
 const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
 const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
 const a0 = a;
 const b0 = b;
 
-test('diffPatch', async t => {
-  await t.test('returns a patch-style diff of two arrays', t => {
+
+describe('diffPatch', () => {
+  it('returns a patch-style diff of two arrays', () => {
     const result = Diff3.diffPatch(a, b);
 
     assert.deepEqual(result[0].buffer1.offset, 2);
@@ -33,32 +34,32 @@ test('diffPatch', async t => {
     assert.deepEqual(result[2].buffer2.chunk, ['z', 'z']);
   });
 
-  await t.test('did not modify buffer1 or buffer2', t => {
+  it('did not modify buffer1 or buffer2', () => {
     assert.equal(a0, a);
     assert.equal(b0, b);
   });
 });
 
 
-test('patch', async t => {
-  await t.test('applies a patch against buffer1 to get buffer2', t => {
+describe('patch', () => {
+  it('applies a patch against buffer1 to get buffer2', () => {
     const patch = Diff3.diffPatch(a, b);
     const result = Diff3.patch(a, patch);
     assert.deepEqual(result, b);
   });
 
-  await t.test('did not modify buffer1 or buffer2', t => {
+  it('did not modify buffer1 or buffer2', () => {
     assert.equal(a0, a);
     assert.equal(b0, b);
   });
 });
 
 
-test('stripPatch', async t => {
+describe('stripPatch', () => {
   const patch = Diff3.diffPatch(a, b);
   const strip = Diff3.stripPatch(patch);
 
-  await t.test('removes extra information from the diffPatch result', t => {
+  it('removes extra information from the diffPatch result', () => {
     assert.deepEqual(strip[0].buffer1.offset, 2);
     assert.deepEqual(strip[0].buffer1.length, 1);
     assert.deepEqual(strip[0].buffer1.chunk, undefined);
@@ -81,12 +82,12 @@ test('stripPatch', async t => {
     assert.deepEqual(strip[2].buffer2.chunk, ['z', 'z']);
   });
 
-  await t.test('applies a stripped patch against buffer1 to get buffer2', t => {
+  it('applies a stripped patch against buffer1 to get buffer2', () => {
     const result = Diff3.patch(a, strip);
     assert.deepEqual(result, b);
   });
 
-  await t.test('did not modify the original patch', t => {
+  it('did not modify the original patch', () => {
     assert.notEqual(patch, strip);
     assert.notEqual(patch[0], strip[0]);
     assert.notEqual(patch[1], strip[1]);
@@ -96,11 +97,11 @@ test('stripPatch', async t => {
 });
 
 
-test('invertPatch', async t => {
+describe('invertPatch', () => {
   const patch = Diff3.diffPatch(a, b);
   const invert = Diff3.invertPatch(patch);
 
-  await t.test('inverts the diffPatch result', t => {
+  it('inverts the diffPatch result', () => {
     assert.deepEqual(invert[0].buffer2.offset, 2);
     assert.deepEqual(invert[0].buffer2.length, 1);
     assert.deepEqual(invert[0].buffer2.chunk, ['b']);
@@ -123,12 +124,12 @@ test('invertPatch', async t => {
     assert.deepEqual(invert[2].buffer1.chunk, ['z', 'z']);
   });
 
-  await t.test('applies an inverted patch against buffer2 to get buffer1', t => {
+  it('applies an inverted patch against buffer2 to get buffer1', () => {
     const result = Diff3.patch(b, invert);
     assert.deepEqual(result, a);
   });
 
-  await t.test('did not modify the original patch', t => {
+  it('did not modify the original patch', () => {
     assert.notEqual(patch, invert);
     assert.notEqual(patch[0], invert[0]);
     assert.notEqual(patch[1], invert[1]);
diff --git a/test/merge.test.js b/test/merge.test.js
index 7069457..60fb2e6 100644
--- a/test/merge.test.js
+++ b/test/merge.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('merge', async t => {
 
-  await t.test('returns conflict: false if no conflicts', t => {
+describe('merge', () => {
+
+  it('returns conflict: false if no conflicts', () => {
     const o = ['AA'];
     const a = ['AA'];
     const b = ['AA'];
@@ -16,7 +17,7 @@ test('merge', async t => {
   });
 
 
-  await t.test('returns a diff3-style merge result', t => {
+  it('returns a diff3-style merge result', () => {
     const o = ['AA', 'ZZ', '00', 'M', '99'];
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
@@ -52,7 +53,7 @@ test('merge', async t => {
   });
 
 
-  await t.test('yaml comparison - issue #46', t => {
+  it('yaml comparison - issue #46', () => {
     const o = `title: "title"
 description: "description"`;
     const a = `title: "title"
diff --git a/test/mergeDiff3.test.js b/test/mergeDiff3.test.js
index 46fbd3c..53b09e2 100644
--- a/test/mergeDiff3.test.js
+++ b/test/mergeDiff3.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('mergeDiff3', async t => {
 
-  await t.test('returns conflict: false if no conflicts', t => {
+describe('mergeDiff3', () => {
+
+  it('returns conflict: false if no conflicts', () => {
     const o = ['AA'];
     const a = ['AA'];
     const b = ['AA'];
@@ -16,7 +17,7 @@ test('mergeDiff3', async t => {
   });
 
 
-  await t.test('performs merge diff3 on arrays', t => {
+  it('performs merge diff3 on arrays', () => {
     const o = ['AA', 'ZZ', '00', 'M', '99'];
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
@@ -55,7 +56,7 @@ test('mergeDiff3', async t => {
   });
 
 
-  t.test('yaml comparison - issue #46', t => {
+  it('yaml comparison - issue #46', () => {
     const o = `title: "title"
 description: "description"`;
     const a = `title: "title"
diff --git a/test/mergeDigIn.test.js b/test/mergeDigIn.test.js
index 8ee36ac..9b7d245 100644
--- a/test/mergeDigIn.test.js
+++ b/test/mergeDigIn.test.js
@@ -1,10 +1,11 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import * as Diff3 from '../index.mjs';
+import { describe, it } from 'bun:test';
+import { strict as assert } from 'bun:assert';
+import * as Diff3 from '../src/diff3.mjs';
 
-test('mergeDigIn', async t => {
 
-  await t.test('returns conflict: false if no conflicts', t => {
+describe('mergeDigIn', () => {
+
+  it('returns conflict: false if no conflicts', () => {
     const o = ['AA'];
     const a = ['AA'];
     const b = ['AA'];
@@ -16,7 +17,7 @@ test('mergeDigIn', async t => {
   });
 
 
-  await t.test('returns a digin-style merge result', t => {
+  it('returns a digin-style merge result', () => {
     const o = ['AA', 'ZZ', '00', 'M', '99'];
     const a = ['AA', 'a', 'b', 'c', 'ZZ', 'new', '00', 'a', 'a', 'M', '99'];
     const b = ['AA', 'a', 'd', 'c', 'ZZ', '11', 'M', 'z', 'z', '99'];
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..2fe6736
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,20 @@
+{
+  "include": [""],
+  "compilerOptions": {
+    "module": "esnext",
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "dist",
+    "esModuleInterop": true,
+    "moduleResolution": "node",
+    "noImplicitAny": false,
+    "noImplicitReturns": true,
+    "noImplicitThis": true,
+    "resolveJsonModule": true,
+    "strictBindCallApply": true,
+    "strictFunctionTypes": true,
+    "strictPropertyInitialization": true,
+    "strictNullChecks": true,
+    "target": "esnext"
+  }
+}