v2.0.0: Full TypeScript modernization (#10)

* chore: setup modern toolchain

Replace Gulp/Browserify/Mocha with tsup/Vitest/Biome.
package.json v2.0.0, ESM+CJS dual exports, Node 20+.
tsconfig.json strict, ES2022 target.

Assisted-by: 🤖 claude-opus-4-6@default

* refactor: migrate source to TypeScript

Eid, exceptions, preconditions rewritten as typed classes.
ES2022 Error.cause support in all exception constructors.
tryToExecute preserves original error as cause.

Assisted-by: 🤖 claude-opus-4-6@default

* refactor: migrate tests to Vitest

59 tests, 100% coverage. Mocha+expect.js replaced with Vitest.
Added cause chaining tests for exceptions and tryToExecute.

Assisted-by: 🤖 claude-opus-4-6@default

* ci: replace Travis with GitHub Actions

Node 20+22 matrix, lint/test/build jobs.
Concurrency control, timeout protection.

Assisted-by: 🤖 claude-opus-4-6@default

* chore: remove legacy files

Drop gulp/, bower.json, .travis.yml, dist/, gulpfile.js.
Drop old lib/ and test/ (replaced by src/).

Assisted-by: 🤖 claude-opus-4-6@default

* docs: update README for v2

Defensive programming framing, ESM/CJS/browser examples.
Error.cause docs, rewritten EidPreconditions section.
Drop Bower, update badges to GitHub Actions.

Assisted-by: 🤖 claude-opus-4-6@default

* fix: address review feedback

CI: add permissions: contents: read, persist-credentials: false.
package.json: nested types in exports for CJS/ESM, add typecheck script.
eid.ts: fix %s injection in JFormatter (single-pass replace).
preconditions.ts: fix off-by-one in checkElementIndex (index >= size).
index.ts: remove misleading backward compat block.

Assisted-by: 🤖 claude-opus-4-6@default

* fix: restore Eid.preconditions and Eid.exceptions for backward compat

Attach preconditions and exceptions as static properties on Eid class.
Legacy consumers using Eid.preconditions.checkNotNull() still work.

Assisted-by: 🤖 claude-opus-4-6@default

Author: cardil

.github/workflows/ci.yml

@@ -0,0 +1,64 @@
+name: CI
+
+on:
+  push:
+    branches: [master, develop]
+  pull_request:
+    branches: [master, develop]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+      - run: npm ci
+      - run: npx biome check src/
+
+  test:
+    name: Test (Node ${{ matrix.node-version }})
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    strategy:
+      matrix:
+        node-version: [20, 22]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: npm
+      - run: npm ci
+      - run: npm run test:coverage
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    needs: [lint, test]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+      - run: npm ci
+      - run: npm run build

.gitignore

@@ -1,28 +1,28 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+
+# Coverage
+coverage/
+
 # Logs
-logs
 *.log
 
 # Runtime data
-pids
 *.pid
 *.seed
 
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# node-waf configuration
-.lock-wscript
+# OS files
+.DS_Store
+Thumbs.db
 
-# Compiled binary addons (http://nodejs.org/api/addons.html)
-build/Release
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
 
-# Dependency directory
-# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
-node_modules
-target/
+# Temp
+.ai/