NodeJS：导入所有局部变量

Question

I have a project on TypeScript and I need to run compiled JS file on NodeJS. The problem is I can't change TypeScript file. The problem is TypeScript compiler makes var mymodule and attaches all variables and functions to this var . And I don't know how to import this module to NodeJS. Can I import all variables (including local) in NodeJS?

Answer 1

Do things right

TypeScript project should use CommonJS module system.

Add exports manually

If you can not change module system, you can add this at the end of your .ts file:

declare var module: { exports };
if (typeof module === "object" && module.exports)
    module.exports = mymodule;

Export several submodules

You can write this.mymodule1 = ... instead of var mymodule1 = ... . This mode works in both Node.js and browser.

Use "eval"

I can't change TypeScript file

If you can not change .ts file at all, use eval in dependent .js :

var fs = require("fs");
eval(fs.readFileSync("myTSModule.js", "utf8"));

mymodule.myCoolMethod("hello");

Use "runInContext"

Also you can isolate running context of ambient module by runInContext :

var context = vm.createContext();
vm.runInContext(code, context);
var mymodule = context.mymodule;