feat: create `parser` package in `packages` directory

.eslintignore

@@ -6,3 +6,6 @@ cypress/plugins/index.js
 coverage
 *.json
 node_modules
+
+# autogenereated by langium-cli
+generated/

.gitignore

@@ -47,3 +47,6 @@ stats/
 demos/dev/**
 !/demos/dev/example.html
 !/demos/dev/reload.js
+
+# autogenereated by langium-cli
+generated/

.prettierignore

@@ -10,3 +10,6 @@ stats
 .nyc_output
 # Autogenerated by `pnpm run --filter mermaid types:build-config`
 packages/mermaid/src/config.type.ts
+
+# autogenereated by langium-cli
+generated/

cSpell.json

@@ -70,6 +70,7 @@
     "knut",
     "knutsveidqvist",
     "laganeckas",
+    "langium",
     "linetype",
     "lintstagedrc",
     "logmsg",

packages/parser/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2023 Yokozuna59
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/parser/langium-config.json

@@ -0,0 +1,13 @@
+{
+  "projectName": "Mermaid",
+  "languages": [
+    {
+      "id": "info",
+      "grammar": "src/language/info/info.langium",
+      "fileExtensions": [".mmd", ".mermaid"]
+    }
+  ],
+  "mode": "production",
+  "importExtension": ".js",
+  "out": "src/language/generated"
+}

packages/parser/package.json

@@ -0,0 +1,49 @@
+{
+  "name": "mermaid-parser",
+  "version": "0.2.0",
+  "description": "MermaidJS parser",
+  "author": "Yokozuna59",
+  "contributors": [
+    "Yokozuna59",
+    "Sidharth Vinod (https://sidharth.dev)"
+  ],
+  "homepage": "https://github.com/mermaid-js/mermaid/#readme",
+  "types": "dist/src/index.d.ts",
+  "type": "module",
+  "exports": {
+    ".": {
+      "import": "./dist/mermaid-parser.esm.mjs",
+      "types": "./dist/src/index.d.ts"
+    },
+    "./*": "./*"
+  },
+  "scripts": {
+    "clean": "rimraf dist src/language/generated",
+    "langium:generate": "langium generate",
+    "langium:watch": "langium generate --watch",
+    "prepublishOnly": "pnpm -w run build"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/mermaid-js/mermaid.git",
+    "directory": "packages/parser"
+  },
+  "license": "MIT",
+  "keywords": [
+    "mermaid",
+    "parser",
+    "ast"
+  ],
+  "dependencies": {
+    "langium": "2.0.0"
+  },
+  "devDependencies": {
+    "langium-cli": "2.0.0"
+  },
+  "files": [
+    "dist/"
+  ],
+  "publishConfig": {
+    "access": "public"
+  }
+}

packages/parser/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": ".",
+    "outDir": "./dist",
+    "allowJs": false,
+    "preserveSymlinks": false,
+    "strictPropertyInitialization": false
+  },
+  "include": ["./src/**/*.ts", "./tests/**/*.ts"],
+  "typeRoots": ["./src/types"]
+}

vite.config.ts

@@ -1,7 +1,7 @@
 import jison from './.vite/jisonPlugin.js';
 import jsonSchemaPlugin from './.vite/jsonSchemaPlugin.js';
 import typescript from '@rollup/plugin-typescript';
-import { defineConfig } from 'vitest/config';
+import { defaultExclude, defineConfig } from 'vitest/config';
 
 export default defineConfig({
   resolve: {
@@ -22,7 +22,7 @@ export default defineConfig({
       provider: 'v8',
       reporter: ['text', 'json', 'html', 'lcov'],
       reportsDirectory: './coverage/vitest',
-      exclude: ['**/node_modules/**', '**/tests/**', '**/__mocks__/**'],
+      exclude: [...defaultExclude, './tests/**', '**/__mocks__/**', '**/generated/'],
     },
   },
   build: {