The service which publishes the contents of DefinitelyTyped to npm.
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Latest commit 48fc12b Aug 6, 2018


This is the source code for the types-publisher service, which publishes the contents of DefinitelyTyped to npm.


If there's functionality from the project you'd like to use, please file an issue detailing that. The script isn't intended for public consumption (i.e. we will break the API whenever convenient for us).

Filing issues

If you've noticed a problem with the way a package is published, file an issue here. If you don't like the contents of a given definition, file an issue (or pull request) on DefinitelyTyped instead.

Manually running

Normally, types-publisher is run through its webhook, but to test it out you can do it yourself. You will need to see the "Environment variables" section first.

cat settings.json

Make sure your settings are correct.

npm run build
npm run full


npm run build
npm run clean
npm run get-definitely-typed
npm run parse
npm run check
npm run calculate-versions
npm run generate
npm run index
npm run publish
npm run upload-blobs


To update the types packages, the following steps must be performed:

* Update the local DefinitelyTyped repo
* Parse the definitions
* Check for conflicts
* Calculate versions
* Generate packages on disk
* Create a search index
* Publish packages on disk
* Upload blobs to Azure

Importantly, each of these steps is idempotent. Running the entire sequence twice should not have any different results unless one of the inputs has changed.

Update the local DefinitelyTyped repo

This is not handled automatically. This step needs to be handled as part of any automatic update script.

Parse the definitions

node bin/parse-definitions.js

This generates the data file data/definitions.json. All future steps depend on this file. One can also pass --single=package_name to test this on a single package.

Contents of data/definitions.json

This file is a key/value mapping used by other steps in the process.

Example entry

"jquery": {
	"authors": "Boris Yankov <>",
	"definitionFilename": "jquery.d.ts",
	"libraryDependencies": [],
	"moduleDependencies": [],
	"libraryMajorVersion": "1",
	"libraryMinorVersion": "10",
	"libraryName": "jQuery 1.10.x / 2.0.x",
	"typingsPackageName": "jquery",
	"projectName": "",
	"sourceRepoURL": "",
	"kind": "Mixed",
	"globals": [
	"declaredModules": [
	"root": "C:\\github\\DefinitelyTyped\\jquery",
	"files": [
	"contentHash": "5cfce9ba1a777bf2eecb20d0830f4f4bcd5eee2e1fd9936ca6c2f2201a44b618"

Fields in data/definitions.json

  • "jquery" (i.e. the property name): The name of the folder from the source repo
  • authors: Author data parsed from a header comment in the entry point .d.ts file
  • definitionFilename: The filename of the entry point .d.ts file. This file must be either index.d.ts, folderName.d.ts (where folderName is the folder name), or the only .d.ts file in the folder
  • libraryDependencies: Which other definitions this file depends on. These will refer to package names, not folder names
  • libraryMajorVersion / libraryMinorVersion: Version data parsed from a header comment in the entry point .d.ts. These values will be 0 if the entry point .d.ts file did not specify a version
  • libraryName: Library name parsed from a header comment in the entry point .d.ts file
  • typingsPackageName: The name on NPM that the type package will be published under
  • projectName: Project name or URL information parsed from a header comment in the entry point .d.ts file
  • sourceRepoURL: The URL to the originating type definition repo. Currently hardcoded to DefinitelyType's URL
  • kind: One of the following strings based on the declarations in the folder:
    • Unknown: The type of declaration could not be detected
    • MultipleModules: Multiple ambient module declarations (declare module "modName" {) were found
    • Mixed: At least one global declaration and exactly one ambient module declaration
    • DeclareModule: Exactly one ambient module declaration and zero global declarations
    • Global: Only global declarations. Preferred
    • ProperModule: Only top-level import and export declarations. Preferred
    • ModuleAugmentation: An ambient module declaration and at top-level import or export declaration. Preferred
    • UMD: Only top-level import and export declarations, as well as a UMD declaration. Preferred
    • OldUMD: Exactly one namespace declaration and exactly one ambient module declaration
  • globals: A list of values declared in the global namespace. Note that this does not include types declared in the global namespace
  • declaredModules: A list of modules declared. If kind is ProperModule, this list will explicitly list the containing folder name
  • root: A full path to the declaration folder
  • files: A list of the .d.ts files in the declaration folder
  • contentHash: A hash of the names and contents of the files list, used for versioning

Contents of logs/

This log file contains a summary of the outcome of each declaration, as well as a set of warnings.

Failure States

Currently, the only error condition is if there are multiple .d.ts files in the declaration folder and none of them are the obvious entry point. These will be listed in the warnings section of; search for "Found either zero or more" in this file.


The following warnings may be present. Some warnings block package creation and should be addressed sooner.

Too Many Files

Found either zero or more than one .d.ts file and none of google-apps-script.d.ts or index.d.ts

This warning means the script could not determine what the entry point .d.ts file was. Fix this by renaming some .d.ts file to the containing folder name, or index.d.ts. This warning blocks package creation.

Incorrect Declared Module

Declared module howler is in folder with incorrect name howlerjs

This warning means that a module declaration's name does not match the containing folder's name. Determine which is correct and rename the folder or the module declaration appropriately.


Package name joData should be strictly lowercase

Nearly all package names should be lowercased to conform with NPM naming standards. This warning might not be appropriate; consider logging an issue.

Check for conflicts

node bin/check-parse-results.js

This is an optional script that checks for multiple declaration packages with the same library name or same project name.

Contents of logs/

  • Duplicate Library Name descriptions "Marked"
    • marked
    • ngwysiwyg

Examine these declarations and change them to have distinct library names, if possible.

Examine these declarations and change them to have distinct package names, if possible.

Calculate versions

This generates versions.json based on the last uploaded versions.json and by the content hashes computed during parsing.

Arguments to calculate-versions

The --forceUpdate argument will cause a build version bump even if the contentHash of the originating types folder has not changed. This argument may be needed during development, but should not be used during routine usage.

Create a search index

node bin/create-search-index.js

This script creates data/search-index-min.json, which (in the upload step) will be uploaded to Azure and used by TypeSearch. This step is not necessary for other steps in the process.

Arguments to create-search-index

You can generate a prettier output in data/search-index-full.json. This version is for human review only and is not compatible with TypeSearch.

By default, create-search-index fetches download counts from NPM for use in search result ranking. The argument --skipDownloads disables this behavior.

Search Entries

Each search-*.json file consists of an array. An example unminified entry is:

	"projectName": "",
	"libraryName": "Backgrid",
	"globals": [
	"typePackageName": "backgrid",
	"declaredExternalModules": [
	"downloads": 532234

These fields should hopefully be self-explanatory. downloads refers to the number in the past month. If --skipDownloads was specified, downloads will be -1. In the case where the type package name is different from the NPM package name, or no NPM package name exists, downloads will be 0.

In the minified files, the properties are simply renamed. See src/lib/search-index-generator.ts for documentation.

Empty arrays may be elided in future versions of the minified files.

Generate packages on disk

node bin/generate-packages.js

This step writes all type packages to disk. The output folder is specified in settings.json (see section "Settings").

You can also output a single package with e.g. node bin/generate-packages.js --single abs. (This will still require parsing every package first, as we may need information about referenced packages.)

Arguments to generate-packages

Use the --single foo option to generate just the package named "foo". Use the --all option to generate even packages that have not changed. Use the --tgz option to create .tgz archives as well. These should represent what is actually uploaded to NPM.

Outputs of generate-packages

Package Folders

The package generation step creates a folder for each package under the output folder.

The following files are produced automatically:

  • package.json
  • metadata.json: This is the entry from definitions.json, excluding the root property
  • All declaration files are transformed and copied over

Definition File Transforms

The following changes occur when a file is transformed:

  • /// <reference path= directives are changed to corresponding /// <reference types= directives
  • The file is saved in UTF-8 format


This file is currently uninteresting.

Publish packages on disk

node bin/publish-packages.js

This step publishes the files to the NPM registry.

Several keys in settings.json affect this step; be sure to read this section.

Before publishing, the script checks the NPM registry to see if a package with the same version number has already been published. If so, the publishing is skipped.

Outputs of publish-packages.js


This log file indicates which packages were published and which were skipped. It also indicates any errors that may have occurred during publishing.

Note that unlike other steps, this log file output is not idempotent. Scripts should save this log under a unique filename so any errors may be reviewed.

Publish registry

node bin/publish-registry.js [--dry]

This step publishes the types-registry package on NPM, which keeps a list of all @types packages. This step only happens if there are some new packages to register.

Upload blobs

This uploads the data and logs directories to Azure. data always overwrites any old data, while logs has a timestamp prepended so old logs can still be viewed. Blobs can be viewed here or on Azure.

Testing the webhook

(Since this is a test, make sure you are not logged in to npm (npm logout), and use the --dry flag.)

Testing the webhook without a repository

The script npm run make-server-run will trigger the local webhook just like Github would. (For the production server, use npm run make-production-server-run.)

Testing the webhook with a repository

  • Create a dummy repository (e.g.

  • Set up forwarding:

    • Install ngrok
    • ngrok http 80 (or whatever PORT environment variable you're using)
    • Copy the forwarding URL (Looks like:
  • Add a hook:

  • Start the server:

    • Change settings.json: "sourceRepository": ""
    • Set the GITHUB_SECRET environment variable to swordfish
    • npm install; npm run build
    • node bin/webhook.js --dry
  • Make a test change:

    • git clone
    • Copy the name of the sourceBranch from types-publisher/settings.json
    • git checkout -b branch_name
    • git push -u origin branch_name
    • To test again in future, just:
      • echo "different text" >
      • git add --all
      • git commit --amend -m "first commit"
      • git push -f

Using the webhook

npm run webhook-dry

This requires environment variables to be set; see the "Environment variables" section.


This file contains settings used by the publisher.

The following properties are supported:


Required. Example value: types

This changes the scope name packages are published under. Do not prefix this value with @.


Required. Example value: ./output

This is the path where packages are written to before publishing.


Required. Example value: ../DefinitelyTyped

This is the path to the DefinitelyTyped (or other similarly-structured) repo.


This is the URL of the DefinitelyTyped repo.


Optional. Example value latest

If present, packages are published with the provided version tag.


Name of the Azure storage account.


Name of the Azure container.


GitHub issue to use to report errors from the webhook.

Environment variables


These are needed to access all other secrets. See src/lib/secrets.ts.


This lets you run the webhook in dry mode in Azure, without needing command line flags.


This is the port the webhook uses for GET requests.


Setting this variable turns on longjohn stacktraces.

Set environment variables in Azure

  • Go to
  • Go to types-publisher (not the typespublisher storage account)
  • Go to Settings -> General -> Application settings -> App Settings

Validating published packages

To validate published packages run:

npm run build
npm run validate [<package>]

for instance:

npm run validate node exress jquery

will try to install the three packages, and run the tsc compiler on them.

Specifing no options to the command will validate all known packages.

Publishing to azure

Azure is set up to listen to the production branch, which is like master but includes bin/.

Update production branch

git checkout production
git merge master
npm run build
git status # Should see changes to bin/
git add --all
git commit -m "Update bin/"
git push

Azure is listening for changes to production and should restart itself. The server also serves a simple web page here.

Debugging Azure

While the server is running, you can view logs live:

npm install -g azure-cli
azure config mode asm
azure login
azure site log tail types-publisher

If the server is working normally, you can view log files here.

You can view the full server logs at ftp. For FTP credentials, ask Andy or reset them by going to → types-publisher → Quick Start → Reset deployment credentials. You can also download a ZIP using the azure-cli command azure site log download. The most useful logs are in LogFiles/Application.

Testing Azure

Instead of waiting for someone to push to DefinitelyTyped, you should test out your new deployment by running npm run make-production-server-run, which will trigger a full build .