rewrite: TypeScript implementation (from interscript-ts); removes legacy JavaScript

- Full .isc/.imp map execution with megaregexp parallel mode
- TypeScript with strict type checking
- Vitest test suite
- npm trusted publishing (OIDC)
- IMF v1 runtime for the secryst phonological layer

The legacy JavaScript code is superseded entirely; this repo is the
canonical JS/TS runtime and will be renamed interscript-ts.

Author: ronaldtse

.github/workflows/ci.yml

@@ -0,0 +1,46 @@
+name: ci
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build-and-test:
+    name: Build + Test (Node ${{ matrix.node }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node: [20, 22]
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version: ${{ matrix.node }}
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+      - run: npm test
+      - run: npm run lint
+      - run: npm run format:check
+
+  coverage:
+    name: Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
+        with:
+          node-version: "22"
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+      - run: npm test -- --coverage
+      - uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage/

.github/workflows/codeql.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        language: [javascript]
+        language: [javascript-typescript]
     steps:
       - uses: actions/checkout@v7
       - uses: github/codeql-action/init@v3

.github/workflows/release.yml

@@ -3,49 +3,26 @@ name: release
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
+
+permissions:
+  contents: read
+  id-token: write  # required for npm provenance
 
 jobs:
-  release:
+  publish:
     runs-on: ubuntu-latest
+    environment: release
     steps:
-      - name: Checkout monorepo
-        uses: actions/checkout@v7
-        with:
-          repository: interscript/interscript
-
-      - name: Bootstrap packages
-        run: ruby bootstrap.rb
-
-      - uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: '3.3'
-          bundler-cache: true
-          working-directory: ruby
-
+      - uses: actions/checkout@v7
       - uses: actions/setup-node@v7
         with:
-          node-version: '22'
-          registry-url: https://registry.npmjs.org
+          node-version: "22"
           cache: npm
-          cache-dependency-path: js/package-lock.json
-
-      - name: Install gems
-        working-directory: ruby
-        run: bundle install --jobs 4 --retry 3 --with jsexec --without secryst
-
-      - name: Test Ruby package
-        working-directory: ruby
-        run: bundle exec rake
-
-      - name: Test JS package
-        working-directory: js
-        run: npm ci && npm run prepareMaps && npm test
-
-      - name: Publish to npmjs.org
+          registry-url: https://registry.npmjs.org
+      - run: npm ci
+      - run: npm run build
+      - run: npm test
+      - run: npm publish --provenance --access public
         env:
           NODE_AUTH_TOKEN: ${{ secrets.INTERSCRIPT_NPM_TOKEN }}
-        working-directory: js
-        run: |
-          npm run prepareMaps
-          npm publish --access public

.gitignore

@@ -1,5 +1,13 @@
-/src/maps
-/node_modules
+node_modules/
+dist/
+coverage/
+*.tsbuildinfo
 
-# Legacy Opal bundle — do not commit (TS port will remove this entirely)
-interscript.js
+# Editor
+.vscode/
+.idea/
+.DS_Store
+
+# Logs
+*.log
+npm-debug.log*

.prettierrc.json

@@ -0,0 +1,25 @@
+BSD 2-Clause License
+
+Copyright (c) 2026 Ribose Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGE.