typescript

library0.0.12jsnpmunverified

TypeScript is a superset of JavaScript that adds optional static typing, enabling robust tools for large-scale application development across any browser, host, or OS. The current stable version is 6.0.3. New stable versions are typically released every few months, preceded by beta and release candidate versions, ensuring a predictable upgrade path.

type-stubs

npm install typescript

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · TYPESCRIPT

typescript

type-stubsjavascriptv0.0.12

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

✓ import * as ts from 'typescript';

This import is for programmatic access to the TypeScript compiler API (e.g., for build tools or language services), not for runtime use in applications.

Installs the TypeScript compiler, creates a sample TypeScript file, compiles it to JavaScript using the `tsc` command, and then executes the resulting JavaScript file.

npm install -D typescript // Create a file named 'hello.ts' // console.log(` // function greet(name: string) { // console.log(`Hello, ${name}!`); // } // // greet("World"); // greet(123); // This will cause a TypeScript error // `); // Compile the TypeScript file npx tsc hello.ts // Run the compiled JavaScript file node hello.js

tsc --version

Debug

Known issues

breakingMajor versions of TypeScript can introduce breaking changes to the language, compiler options, or API. Always consult the release notes before upgrading.

fix

Review the official TypeScript blog announcements (e.g., devblogs.microsoft.com/typescript) for detailed breaking changes and migration guides specific to your upgrade path.

affects: >=5.0

gotchaInstalling TypeScript globally (`npm install -g typescript`) can lead to version mismatches with project-local TypeScript installations, causing unexpected compilation behavior.

fix

Prefer installing TypeScript as a development dependency (`npm install -D typescript`) within each project and use `npx tsc` or npm/yarn scripts (e.g., `"build": "tsc"`) to ensure the correct project-local compiler is used.

affects: All

gotchaTypeScript's default configuration in `tsconfig.json` can be permissive. For robust type checking and to catch common errors, strict mode is highly recommended.

fix

Add `"strict": true` to your `compilerOptions` in `tsconfig.json`. Consider enabling other strict flags incrementally if full strict mode is too aggressive initially.

affects: All

breakingTypeScript requires a minimum Node.js version of 14.17.0. Using older Node.js versions may result in installation errors or unexpected compiler behavior.

fix

Upgrade your Node.js environment to version 14.17.0 or higher. Use a Node.js version manager like `nvm` to easily switch between versions.

affects: <14.17.0

Errors

Common errors & fixes

TS2307: Cannot find module '...' or its corresponding type declarations.

The TypeScript compiler cannot locate the module you are trying to import, or it's missing type definition files (`.d.ts`) for a JavaScript library.

fix

For third-party JavaScript libraries, install their type definitions (e.g., `npm install -D @types/library-name`). Ensure your `tsconfig.json` `moduleResolution` is correctly configured (e.g., `"node"` or `"bundler"`).

TS2339: Property 'X' does not exist on type 'Y'.

You are attempting to access a property (`X`) that is not declared on the type (`Y`) of the object.

fix

Verify that the property truly exists on the object. If it's a known property from a less-typed source, use a type assertion (e.g., `(myObject as any).X`) or add a type guard to narrow the type (e.g., `if ('X' in myObject)`).

TS2554: Expected X arguments, but got Y.

A function or method is being called with an incorrect number of arguments, not matching its defined signature.

fix

Review the function's signature and provide the correct number of arguments. If some arguments are optional, ensure they are handled correctly.

TS1206: Decorators are not supported if 'experimentalDecorators' is set to 'false'.

You are using JavaScript decorators (Stage 3 proposal) in your code without enabling the `experimentalDecorators` compiler option.

fix

Set `"experimentalDecorators": true` within the `compilerOptions` section of your `tsconfig.json` file. Note that these are experimental and may change in future TypeScript versions.

Upgrade

Version history

0.0.12latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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Resources

githubhttps://github.com/microsoft/TypeScript ↗

packagehttps://www.npmjs.com/package/typescript ↗

homepagehttps://www.typescriptlang.org ↗