Eliminate the need for require statements in TypeScript-generated JavaScript files

I am working on a website project and utilizing TypeScript for development.

While using the tsc compiler, I noticed that all my JavaScript code compiles correctly. However, when I include an import statement in my TypeScript files, it gets compiled into JavaScript as a require statement which is not compatible with web environments.

I know there is an option like browserify to resolve this issue, but it brings in additional JavaScript code whenever it encounters a require statement. I would rather individually include each JavaScript file in my HTML using

<script src="..."></script>
.


Is there a way to stop TypeScript from generating require statements in the compiled JavaScript output?


Below are the contents of my tsconfig.json configuration file:

{
    "compilerOptions": {
        "target": "es6",
        "module": "commonjs",
        "lib": [
            "es6",
            "dom"
        ],
        "sourceMap": true,
        "outDir": "./typescript/compiled",
        "removeComments": true,
        "noImplicitAny": true,
        "noImplicitThis": true,
        "strictNullChecks": true,
        //"noEmit": true,
        "forceConsistentCasingInFileNames": true
    },
    "include": [
        "./typescript/**/*.ts"
    ]
}

main.ts

import { Helper } from "./helper";

var helper = new Helper();

helper.ts

export class Helper {
    // ...
}

main.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const helper_1 = require("./helper");
var helper = new helper_1.Helper();
//# sourceMappingURL=main.js.map

Answer №1

When developing a javascript application without using modules, you may not need to use import statements in your typescript file. Importing a file means bringing its contents into your code.

If you prefer to keep your javascript files separate, you can use:

/// <reference path=".. definition you want to refer ..." />

instead.

UPDATE:

Starting from TypeScript 1.5, if your files are located within:

"include": [
        "./typescript/**/*.ts"
    ]

You no longer need to use reference ....

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