graalvm typescript types 编写定义参考说明

本文主要是介绍graalvm typescript types 编写定义参考说明，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

以下只是一个简单的学习，大家可以参考，然后基于此扩展

案例说明

就是一个简单的java.math.BigInteger 定义

参考定义

• package.json

{

  "name": "@dalongrong/graalvm-type-learning",

  "version": "1.0.0",

  "main": "index.js",

  "license": "MIT",

  "types": "dist/index.d.ts",

  "devDependencies": {

    "typescript": "^4.6.4"

  },

  "files": [

    "dist/*.d.ts"

  ],

  "scripts": {

    "app":"tsc",

    "watch":"tsc --watch",

    "p":"yarn publish"

  },

  "publishConfig": {

    "access": "public",

    "registry": "https://registry.npmjs.com"

  }

}

• tsconfig.json

{

  "include": [

    "src/*"

  ],

  "compilerOptions": {

    /* Visit https://aka.ms/tsconfig.json to read more about this file */

    "outDir": "dist",

    "declaration": true,

    /* Language and Environment */

    "target": "ESNext",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */

    "lib": ["DOM","ES2015","ES2020.BigInt"],

    /* Modules */

    "module": "commonjs",                                /* Specify what module code is generated. */

    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */

    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */

    /* Type Checking */

    "strict": true,                                      /* Enable all strict type-checking options. */

    /* Completeness */

    // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */

    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */

  }

}

• index.d.ts

// 类型定义，类似一个map

interface JavaType {

    "java.math.BigInteger": typeof Java.math.BigInteger;

}

 

/**

 * just for type definition don't use it directly

 */

declare namespace Java {

    namespace math {

       // BigInteger 定义

        class BigInteger {

             public static valueOf(value:bigint):BigInteger;

             pow(exponent:number):BigInteger;

             toString():string;

             toString(radix:number):string;

        } 

    }

    /**

     *  工具类实现type 的获取

     * @param key get java type must use --jvm with java interop

     */

    function type<Key extends keyof JavaType>(key: Key):JavaType[Key]

}

项目使用

• package.json

{

  "name": "g-ts",

  "version": "1.0.0",

  "main": "index.js",

  "license": "MIT",

  "scripts": {

    "app": "tsc --watch"

  },

  "devDependencies": {

    "@dalongrong/graalvm-type-learning": "^1.0.0"

  }

}

``

tsconfig.json

```code

{

  "include": [

    "src/*"

  ],

  "compilerOptions": {

    /* Visit https://aka.ms/tsconfig.json to read more about this file */

    "types": ["@dalongrong/graalvm-type-learning"],

    "outDir": "dist",

    "lib": ["ESNext.BigInt","ESNext","DOM"],

    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */

    "module": "commonjs",                                /* Specify what module code is generated. */

    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */

    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */

    "strict": true,                                      /* Enable all strict type-checking options. */

    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */

  }

}

• src/app.ts

let app = Java.type("java.math.BigInteger")

console.log(app.valueOf(BigInt("33")).pow(33).toString(16))

• 安装graalvm nodejs
  需要安装graalvm，以及nodejs 可以使用如下命令 (通过sdkman)，graalvm 21 之后nodejs 需要独立安装

 

sdk install java 22.1.0.r17-grl

gu install nodejs

• 运行

<path to graalvm bin dir >/22.1.0.r17-grl/bin/node --jvm  dist/app.js 

• 效果

 

 

说明

以上只是一个简单的开头，以及如果集成使用，我们可以扩展下，实际上es4x 已经实现了以上的一些类型能力，而且包含了自动化的工具

参考资料

https://www.npmjs.com/package/@dalongrong/graalvm-type-learning
https://www.graalvm.org/22.1/reference-manual/js/
https://reactiverse.io/es4x/

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