# ts-declaration-location

> Determine where a ts type declaration comes from

Latest version **1.0.7** (published 2025-03-22) · BSD-3-Clause license · 0 weekly downloads

## Install

```sh
npm install ts-declaration-location
pnpm add ts-declaration-location
yarn add ts-declaration-location
bun add ts-declaration-location
```

## Health

**Score 45/100 (D)** — status: stable.

Positive: esm support; no vulnerabilities; high maintenance score.

Warnings: low downloads; no types.

Negative: stale.

## Facts

| | |
|---|---|
| Version | 1.0.7 |
| Published | 2025-03-22 |
| First published | 2024-04-14 |
| Weekly downloads | 0 |
| License | BSD-3-Clause |
| TypeScript types | none |
| Module format | ESM |
| Dependencies | 1 |
| Unpacked size | 24.3 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 1 |
| Author | Rebecca Stevens |
| Maintainers | rebeccastevens |

## Links

- npm: https://www.npmjs.com/package/ts-declaration-location
- Repository: https://github.com/RebeccaStevens/ts-declaration-location
- Homepage: https://github.com/RebeccaStevens/ts-declaration-location#readme
- Issues: https://github.com/RebeccaStevens/ts-declaration-location/issues
- Funding: https://ko-fi.com/rebeccastevens
- npm.io page: https://npm.io/package/ts-declaration-location

## Dependencies (1)

- [picomatch](https://npm.io/package/picomatch.md) ^4.0.2

## Recent versions

- 1.0.7 (latest) — 2025-03-22
- 1.0.6 — 2025-03-08
- 1.0.5 — 2024-11-28
- 1.0.4 — 2024-08-01
- 1.0.3 — 2024-07-19
- 1.0.2 — 2024-07-06
- 1.0.1 — 2024-05-06
- 1.0.0 — 2024-04-14

## README

<div align="center">

# ts-declaration-location

[![npm
version](https://img.shields.io/npm/v/ts-declaration-location.svg)](https://www.npmjs.com/package/ts-declaration-location)
[![jsr Version](https://img.shields.io/jsr/v/@rebeccastevens/ts-declaration-location.svg)](https://jsr.io/@rebeccastevens/ts-declaration-location)
[![CI](https://github.com/RebeccaStevens/ts-declaration-location/actions/workflows/release.yml/badge.svg)](https://github.com/RebeccaStevens/ts-declaration-location/actions/workflows/release.yml)
[![Coverage Status](https://codecov.io/gh/RebeccaStevens/ts-declaration-location/branch/main/graph/badge.svg?token=MVpR1oAbIT)](https://codecov.io/gh/RebeccaStevens/ts-declaration-location)\
[![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
[![GitHub Discussions](https://img.shields.io/github/discussions/RebeccaStevens/ts-declaration-location?style=flat-square)](https://github.com/RebeccaStevens/ts-declaration-location/discussions)
[![BSD 3 Clause license](https://img.shields.io/github/license/RebeccaStevens/ts-declaration-location.svg?style=flat-square)](https://opensource.org/licenses/BSD-3-Clause)
[![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg?style=flat-square)](https://commitizen.github.io/cz-cli/)
[![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg?style=flat-square)](https://github.com/semantic-release/semantic-release)

</div>

## Donate

[Any donations would be much appreciated](./DONATIONS.md). 😄

### Enterprise Users

`ts-declaration-location` is available as part of the [Tidelift Subscription](https://tidelift.com/funding/github/npm/ts-declaration-location).

Tidelift is working with the maintainers of `ts-declaration-location` and a growing network of open source maintainers
to ensure your open source software supply chain meets enterprise standards now and into the future.
[Learn more.](https://tidelift.com/subscription/pkg/npm-ts-declaration-location?utm_source=npm-ts-declaration-location&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)

## Installation

### npm

```sh
# Install with npm
npm install ts-declaration-location

# Install with pnpm
pnpm add ts-declaration-location

# Install with yarn
yarn add ts-declaration-location

# Install with bun
`bun add ts-declaration-location
```

### jsr

```sh
# Install in a node project
npx jsr add @rebeccastevens/ts-declaration-location

# Install in a deno project
deno add jsr:@rebeccastevens/ts-declaration-location

# Install in a bun project
bunx jsr add @rebeccastevens/ts-declaration-location
```

## Usage Example

```ts
import typeMatchesSpecifier from "ts-declaration-location";
import type ts from "typescript";

function isTypeFromSomePackage(program: ts.Program, type: ts.Type) {
  const specifier = {
    from: "package",
    package: "some-package",
  };

  return typeMatchesSpecifier(program, specifier, type);
}

function isTypeFromSomeFile(program: ts.Program, type: ts.Type) {
  const specifier = {
    from: "file",
    path: "src/**/some.ts",
  };

  return typeMatchesSpecifier(program, specifier, type);
}

function isTypeFromTSLib(program: ts.Program, type: ts.Type) {
  const specifier = {
    from: "lib",
  };

  return typeMatchesSpecifier(program, specifier, type);
}
```

---
_Source: https://npm.io/package/ts-declaration-location · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._