Alternatives and similar repositories for spy

Users that are interested in spy are comparing it to the libraries listed below

• esfx / esfx
  A suite of packages designed to provide low-level APIs for interoperable libraries.
  ☆234Updated 2 years ago
• Svehla / ts-generics-RegEx-engine
  Bugged few features support RegEx engine written just by Typescript generics
  ☆57Updated 3 years ago
• mmkal / ts
  Monorepo of typescript projects
  ☆152Updated 2 months ago
• tc39 / proposal-function-helpers
  A withdrawn proposal for standardizing some useful, popular helper functions into JavaScript’s Function object.
  ☆46Updated 3 years ago
• sniptt-official / guards
  🛡 Comprehensive collection of type guards for JavaScript and TypeScript; Inspired by Elixir
  ☆180Updated 2 years ago
• microsoft / backfill
  A JavaScript caching library for reducing build time
  ☆163Updated this week
• LeDDGroup / typescript-conditional-types
  Helpers for typescript generic types
  ☆50Updated 5 years ago
• tc39 / proposal-grouped-and-auto-accessors
  Grouped Accessors and Auto-Accessors for ECMAScript
  ☆59Updated 2 years ago
• nicolo-ribaudo / jest-light-runner
  A Jest runner that runs tests directly in bare Node.js, without virtualizing the environment.
  ☆243Updated last month
• dsherret / using_statement
  "Using statement" in JavaScript and TypeScript.
  ☆69Updated 2 years ago
• privatenumber / instant-mocha
  ☕️ Build tests with Webpack and run with Mocha in one command
  ☆48Updated 3 weeks ago
• nonara / ts-expose-internals
  Expose TypeScript internal types by simply adding a development dependency
  ☆73Updated 8 months ago
• sinclairzx81 / linqbox
  Language Integrated Query for JavaScript
  ☆149Updated 5 years ago
• Testy / TestyTs
  ✔️ Decorator-based TypeScript testing framework experiment.
  ☆123Updated 2 years ago
• poppinss / traits
  A tiny library to add support for Traits in Javascript and Typescript projects
  ☆26Updated 5 years ago
• vitaly-t / iter-ops
  Basic operations on iterables
  ☆150Updated last year
• danvk / crosswalk
  Typed express router for TypeScript
  ☆89Updated last month
• WebReflection / proxy-pants
  Secured and reliable Proxy based utilities for more or less common tasks.
  ☆123Updated 2 years ago
• mscharley / generic-type-guard
  Type safe, composable type guards for TypeScript
  ☆52Updated last week
• JoshuaKGoldberg / eslint-plugin-expect-type
  ESLint plugin with ^? Twoslash, $ExpectError, and $ExpectType type assertions. 🧩
  ☆116Updated last week
• Protowalker / algebraify
  An algebraic effects library for javascript and typescript using generators
  ☆76Updated 2 years ago
• tatethurston / embedded-typescript
  Type safe embedded TypeScript templates
  ☆55Updated last year
• tamino-martinius / node-ts-dedent
  TypeScript package which smartly trims and strips indentation from multi-line strings
  ☆175Updated last year
• unional / type-plus
  Additional types and types adjusted utilities for TypeScript
  ☆402Updated this week
• mcollina / snap
  snapshot testing companion for node:test
  ☆45Updated 2 weeks ago
• iambumblehead / esmock
  ESM import and globals mocking for unit tests
  ☆209Updated last week
• skypackjs / package-check
  A quality score checker for npm packages.
  ☆98Updated 3 years ago
• grantila / awesome-ajv-errors
  Prettified AJV errors
  ☆25Updated 2 years ago
• SieR-VR / transformer-query
  Next-generation typescript transformer
  ☆102Updated last year
• gajus / fastify-webpack-hot
  A Fastify plugin for serving files emitted by Webpack with Hot Module Replacement (HMR).
  ☆18Updated 2 years ago