TypeScript：导入的模块未编译

Question

So I have a simple TypeScript file that imports a local TypeScript module. Everything links fine when I compile it, but the compiled JavaScript file is trying to require my TypeScript module which I'm importing, instead of compiling it.

Here's an example of my file layout:

module.ts

declare module "MyModule" {
  export var name: string;
}

test.ts

/// <reference path="../../src/module.ts"/>

import MyModule = require('MyModule');

var myName = MyModule.name;
myName = 'Nick';

console.log(myName);

I attempt to compile it like so:

ntsc mockup.ts and also tried (with the same results) ntsc mockup.ts --module commonjs

It compiles to this:

test.js

/// <reference path="../../src/modern/needle.ts"/>
"use strict";
var MyModule = require('MyModule');
var myName = MyModule.name;
myName = 'Nick';
console.log(myName);

It also attempts to compile module.ts but the file that comes from it is completely empty. Can anyone help me figure out what's going wrong? The line var MyModule = require('MyModule'); clearly isn't correct (the file wrong run because of it). I suspect something might be wrong with my module file, especially since it's not compiling correctly. Any help would be greatly appreciated.

Answer 1

Your file layout should look something like this:

test.ts

import mod = require('./MyModule');

console.log(mod.name);

MyModule.ts

export var name = 'Hello, world!';

Run tsc --module commonjs test.ts to compile, then node test.js to execute.

Answer 2

It also attempts to compile module.ts but the file that comes from it is completely empty

Because module.ts only has declarations . Declarations are just hints to the compiler and will not do any actual JavaScript emit.