TypeScript typings give me "index.d.ts is not a module"

webrtc is part of the browser; you're trying to import a module. Simply import the (typings) library:

import "webrtc";

you may need to use "moduleResolution": "node" in the compiler options.

Alternatively use the "types": ["webrtc"] compiler option and the compiler will automatically load those types up for you.

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In vscode

Ctrl + Shift + p > Developer: Reload Window

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You probably want to add

"types": ["webrtc"]

to your tsconfig.json, or less preferrably, to use

/// <reference types="webrtc" />

in your source files. Here's an example of it in your tsconfig.json:

{
    "compilerOptions": {
        "target": "es5",
        "sourceMap": true,
        "noImplicitAny": true,

        "types": ["webrtc"]
    },
    "exclude": [
        "node_modules"
    ]
}

This tells TypeScript it should include webrtc declarations in your build

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Another option is to add a new declaration file *.d.ts in your module, i.e.:

declare module 'my-module';

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No need to import anything, run following:

npm install --save @types/webrtc update tsconfig.json - "types": [ "@types/webrtc" ]

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/// <reference types="@types/<your_types_module>" />

You may or may not want to do this depending on your build and style needs, but this seems to be the quick (and dirty) fix.

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In my case it was a corrupted dependency, deleting the module and npm install did the work.

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In my case, I was getting this error message with an index.d.ts file generated by the TypeScript compiler.

The problem was that I’d forgotten to specify any import or export declarations in the source .ts file. I removed the original module.export = {…} bit when porting from .js to .ts, and hadn’t yet replaced it.

This is how the docs define a ‘module’ (emphasis added):

In TypeScript, just as in ECMAScript 2015, any file containing a top-level import or export is considered a module. Conversely, a file without any top-level import or export declarations is treated as a script whose contents are available in the global scope (and therefore to modules as well).

Adding an export to the things I intended to export turned the index.d.ts into a module, clearing the error.

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use require

const webRtc = require('webrtc');

and you import should be good to go

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