MAJOR: Switch to ESM / modernize

Author: dcodeIO

.github/workflows/publish.yml

@@ -0,0 +1,33 @@
+name: Publish
+on:
+  push:
+    branches:
+    - main
+jobs:
+  publish:
+    name: Publish
+    if: github.repository == 'dcodeIO/long.js'
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        ref: main
+    - uses: dcodeIO/setup-node-nvm@master
+      with:
+        node-version: current
+    - name: Install dependencies
+      run: npm ci
+    - name: Run tests
+      run: npm test
+    - name: Publish
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+      run: |
+        VERSION=$(npx aspublish --version)
+        if [ -z "$VERSION" ]; then
+          echo "Changes do not trigger a release"
+        else
+          echo "Publishing new version: $VERSION"
+          npx aspublish
+        fi

.github/workflows/test.yml

@@ -0,0 +1,22 @@
+name: Test
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node_version: ["current", "lts_latest"]
+    steps:
+    - uses: actions/checkout@v1.0.0
+    - uses: dcodeIO/setup-node-nvm@master
+      with:
+        node-version: ${{ matrix.node_version }}
+    - name: Install dependencies
+      run: npm ci --no-audit
+    - name: Run tests
+      run: npm test

.gitignore

@@ -1,3 +1,2 @@
 node_modules/
 npm-debug.*
-package-lock.json

.travis.yml

@@ -4,7 +4,7 @@ long.js
 A Long class for representing a 64 bit two's-complement integer value derived from the [Closure Library](https://github.com/google/closure-library)
 for stand-alone use and extended with unsigned support.
 
-[![npm](https://img.shields.io/npm/v/long.svg)](https://www.npmjs.com/package/long) [![Build Status](https://travis-ci.org/dcodeIO/long.js.svg)](https://travis-ci.org/dcodeIO/long.js)
+[![Build Status](https://img.shields.io/github/workflow/status/dcodeIO/long.js/Test/main?label=test&logo=github)](https://github.com/dcodeIO/long.js/actions?query=workflow%3ATest) [![Publish Status](https://img.shields.io/github/workflow/status/dcodeIO/long.js/Publish/main?label=publish&logo=github)](https://github.com/dcodeIO/long.js/actions?query=workflow%3APublish) [![npm](https://img.shields.io/npm/v/long.svg?label=npm&color=007acc&logo=npm)](https://www.npmjs.com/package/long)
 
 Background
 ----------
@@ -30,7 +30,7 @@ Usage
 The class is compatible with CommonJS and AMD loaders and is exposed globally as `Long` if neither is available.
 
 ```javascript
-var Long = require("long");
+import Long from "long";
 
 var longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF);
 
@@ -238,18 +238,11 @@ API
 WebAssembly support
 -------------------
 
-[WebAssembly](http://webassembly.org) supports 64-bit integer arithmetic out of the box, hence a [tiny WebAssembly module](./src/wasm.wat) is used to compute operations like multiplication, division and remainder more efficiently (slow operations like division are around twice as fast), falling back to floating point based computations in JavaScript where WebAssembly is not yet supported, e.g., in older versions of node.
+[WebAssembly](http://webassembly.org) supports 64-bit integer arithmetic out of the box, hence a [tiny WebAssembly module](./wasm.wat) is used to compute operations like multiplication, division and remainder more efficiently (slow operations like division are around twice as fast), falling back to floating point based computations in JavaScript where WebAssembly is not yet supported, e.g., in older versions of node.
 
 Building
 --------
 
-To build an UMD bundle to `dist/long.js`, run:
-
-```
-$> npm install
-$> npm run build
-```
-
 Running the [tests](./tests):
 
 ```