npm · #1699 most downloaded on npm

ts-jest

29.4.12103M downloads/mokulshekhar/ts-jest ↗New releases in your daily digest, changelog included.

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript

Last release 1 months ago
22 Jul 2026
Ships fairly regularly
a new release about every 6 weeks
Nearly every release is documented
notes for 57 of the last 60 stable releases
2 versions withdrawn
withdrawn after publishing
10 years old
218 releases · first in 2016

Release timeline

218 releases since 2016

2016201820202022

Releases

27.0.517 Aug 20212 sources agree
cli: add migration tsConfig option for ts-jest config options (#2794) (781710b), closes #2764
Bug Fixes

cli: add migration tsConfig option for ts-jest config options (#2794) (781710b), closes #2764

cli: fix config:init genarate invalid type comment (#2773) (ede8a20), closes #2772

config: handle ./ in tsconfig paths for pathsToModuleNameMapper (#2797) (42ff5e4), closes #2709

Code Refactoring

use native Buffer.from and mkdird (#2774) (4869660)
Open source →

One column per quarter.

27.0.421 Jul 20212 sources agree

add @types/jest as optional peerDependencies to solve yarn 2

Bug Fixes

add @types/jest as optional peerDependencies to solve yarn 2 (#2756) (5fbf43e)
add babel-jest as optional peerDependencies to solve yarn 2 (#2751) (8bede2e)
config: include AST transformer's name and version into cache key (#2755) (310fb9a), closes #2753

Features

link jest config types on npx ts-jest:init (#2742) (f51ba05)
set env var TS_JEST to allow detecting of ts-jest (#2717) (56c137a), closes #2716

Open source →

27.0.36 Jun 20212 sources agree

revert exports field to support all node versions

Bug Fixes

revert exports field to support all node versions (#2658) (132c8ba)

Features

emit ESM codes if using ESM mode with Babel (#2661) (9b55404), closes #2650

Open source →

27.0.231 May 20212 sources agree

compiler: add empty string file content to compiler cache (#2633) (0feb556), closes #2625

Bug Fixes

compiler: add empty string file content to compiler cache (#2633) (0feb556), closes #2625
config: exclude should only exclude files which match glob values (#2637) (c5ce979), closes #2634

Open source →

27.0.126 May 20212 sources agree

cli: keep testMatch if old jest config contains it (#2618) (c568f49), closes #2616

Bug Fixes

cli: keep testMatch if old jest config contains it (#2618) (c568f49), closes #2616
compiler: make sure isolatedModules: false use updated compiler options (#2628) (348e30f), closes #2629
add missing export presets (#2624) (0ea025e), closes #2623

27.0.0 (2021-05-25)

Bug Fixes

compiler: return file content on emitSkipped for non ts/tsx files (#2519) (a4e5640), closes #2513
compiler: retype check other files if processing file is used by those ones in watch mode (#2481) (ac8f3d0), closes #943
compiler: initialize compiler with .ts/.tsx/.d.ts files only (#2458) (a89f0e2), closes #2445
compiler: resolve nested imported modules for each processing file (#2436) (3cb9019), closes #1390 #1747
config: create fallback jest config when jest config is undefined (#2433) (c6d6e4c), closes #2085
remove @types/jest from direct dep (#2409) (8913120), closes #2406 #2411
compiler: return original file content and show warning on emit skip (#2410) (c2b2164), closes #2407
compiler: type check correctly in watch mode when a file content itself has changed (#2405) (064bf3a), closes #2118
compiler: exclude files in outDir from compiler source files (#2375) (ec68c74), closes #2350 #2374
config: cache config and compiler correctly between runs (#2356) (5f91336)
config: improve emit skipped error message (#2358) (2ae8df4), closes #2350
typings: set correct typing for tsconfig option (#2383) (584324a), closes #2368
config: invalidate Jest transform cache when astTransformers value changes (#2345) (d726016)
reduce size of node_modules when adding ts-jest (#2263) (8e0675c)

Features

config: allow disable sourcemap (#2544) (47da6ad)
compiler: expose TsCompiler as public api (#2344) (871cd6a)
config: support typed config options for jest config typescript (#2335) (3cfc37b)
presets: add typing for presets entry point (#2337) (1a3058f)
compiler: allow custom transformers to access internal Program (#2299) (387964f)
config: replace pathRegex with exclude (#2295) (f2f99c3)
config: type checking js files based on checkJs (#2283) (1e04433)
compiler: support ESM for isolatedModules: false (#2269) (9bb0c05), closes #1709
compiler: support ESM for isolatedModule: true (#2219) (e101db0), closes #1709
presets: add 3 new presets to work with ESM (#2207) (c277858)
allow subclasses of TsJestTransformer to have version checking (#2176) (ca8d7c4)

Performance Improvements

reuse jest file system cache for isolatedModules: false (#2189) (68f446b)

Code Refactoring

config: remove support for astTransformers string array (#2129) (1e0b2ce)
config: remove support for packageJson option (#2128) (05916b9)
move jest transformer class to package entry (#2122) (5bbfd06)
config: remove support for tsConfig option (#2127) (3cc9b80)

Open source →

27.0.025 May 2021

Nothing published for this version

27.0.0-next.125 May 2021pre-release

Nothing published for this version

27.0.0-next.1115 Apr 2021pre-release

Nothing published for this version

27.0.0-next.1030 Mar 2021pre-release

Nothing published for this version

27.0.0-next.919 Mar 2021pre-release

Nothing published for this version

27.0.0-next.811 Mar 2021pre-release

Nothing published for this version

27.0.0-next.725 Feb 2021pre-release

Nothing published for this version

27.0.0-next.611 Feb 2021pre-release

Nothing published for this version

27.0.0-next.54 Feb 2021pre-release

Nothing published for this version

27.0.0-next.422 Jan 2021pre-release

Nothing published for this version

27.0.0-next.314 Jan 2021pre-release

Nothing published for this version

27.0.0-next.217 Dec 2020pre-release

Nothing published for this version

27.0.0-alpha.126 Nov 2020pre-release

Nothing published for this version

27.0.0-alpha.011 Nov 2020pre-release

Nothing published for this version

26.5.65 May 20212 sources agree

refactor(config): show warning message for sourceMap: false (#2557) (cf60990).

Code Refactoring

refactor(config): show warning message for sourceMap: false (#2557) (cf60990).

27.0.0-next.12 (2021-05-05)

Features

config: allow disable sourcemap (#2544) (47da6ad)

Open source →

26.5.515 Apr 20212 sources agree

compiler: return file content on emitSkipped for non ts/tsx files (#2515) (0320fb3), closes #2513

Bug Fixes

compiler: return file content on emitSkipped for non ts/tsx files (#2515) (0320fb3), closes #2513

27.0.0-next.11 (2021-04-15)

Bug Fixes

compiler: return file content on emitSkipped for non ts/tsx files (#2519) (a4e5640), closes #2513

27.0.0-next.10 (2021-03-30)

Bug Fixes

compiler: retype check other files if processing file is used by those ones in watch mode (#2481) (ac8f3d0), closes #943

Open source →

26.5.417 Mar 20212 sources agree

compiler: initialize compiler with .ts/.tsx/.d.ts files only (#2457) (1dc731a), closes #2445

Bug Fixes

compiler: initialize compiler with .ts/.tsx/.d.ts files only (#2457) (1dc731a), closes #2445

27.0.0-next.8 (2021-03-11)

Bug Fixes

compiler: resolve nested imported modules for each processing file (#2436) (3cb9019), closes #1390 #1747
config: create fallback jest config when jest config is undefined (#2433) (c6d6e4c), closes #2085
remove @types/jest from direct dep (#2409) (8913120), closes #2406 #2411
compiler: return original file content and show warning on emit skip (#2410) (c2b2164), closes #2407
compiler: type check correctly in watch mode when a file content itself has changed (#2405) (064bf3a), closes #2118

Open source →

26.5.34 Mar 20212 sources agree

config: create fallback jest config when jest config is undefined (#2421) (0fb6b45), closes #2085

Bug Fixes

config: create fallback jest config when jest config is undefined (#2421) (0fb6b45), closes #2085
remove @types/jest from direct dep (#2416) (060302e), closes #2406 #2411
compiler: return original file content on emit skip (#2408) (cfba8f4), closes #2407

27.0.0-next.7 (2021-02-24)

Bug Fixes

compiler: exclude files in outDir from compiler source files (#2375) (ec68c74), closes #2350 #2374
config: cache config and compiler correctly between runs (#2356) (5f91336)
config: improve emit skipped error message (#2358) (2ae8df4), closes #2350
typings: set correct typing for tsconfig option (#2383) (584324a), closes #2368

Open source →

26.5.223 Feb 20212 sources agree

compiler: exclude files in outDir from compiler source files (#2376) (9034677), closes #2350 #2374

Bug Fixes

compiler: exclude files in outDir from compiler source files (#2376) (9034677), closes #2350 #2374
config: define matchTestFilePath before setupTsJestCfg (#2373) (c427fea), closes #2371
config: improve emit skipped error message (#2357) (f2808bb)
typings: set correct typing for tsconfig/tsConfig option (#2377) (d4f6aff), closes #2368

27.0.0-next.6 (2021-02-11)

Bug Fixes

config: invalidate Jest transform cache when astTransformers value changes (#2345) (d726016)

Features

compiler: expose TsCompiler as public api (#2344) (871cd6a)
config: support typed config options for jest config typescript (#2335) (3cfc37b)
presets: add typing for presets entry point (#2337) (1a3058f)

Open source →

26.5.19 Feb 2021Deprecated2 sources agree

config: deprecate pathRegex in favor of exclude

Features

config: support typed config options for jest config typescript (#2336) (f4f5d32)
presets: add typing for presets entry point (#2341) (e12b004), closes #2325

27.0.0-next.5 (2021-02-04)

Features

compiler: allow custom transformers to access internal Program (#2299) (387964f)

BREAKING CHANGES

ts-jest custom AST transformer function signature has changed to

import type { TsCompilerInstance } from 'ts-jest/dist/types'

export function factory(compilerInstance: TsCompilerInstance) {
   //...
}

26.5.0 (2021-01-29)

Bug Fixes

reduce size of node_modules when adding ts-jest (#2309) (6bf2e8a)

Features

introduce exclude to exclude files from diagnostics (#2308) (cd82fd3)

DEPRECATIONS

config: deprecate pathRegex in favor of exclude (#2308) (cd82fd3)

27.0.0-next.4 (2021-01-22)

Features

config: replace pathRegex with exclude (#2295) (f2f99c3)
config: type checking js files based on checkJs (#2283) (1e04433)

BREAKING CHANGES

One is currently using pathRegex should use exclude with Glob patterns.
If one currently relies on type check for js files, please set checkJs: true in your tsconfig

27.0.0-next.3 (2021-01-14)

Bug Fixes

reduce size of node_modules when adding ts-jest (#2263) (8e0675c)

Features

compiler: support ESM for isolatedModules: false (#2269) (9bb0c05), closes #1709

27.0.0-next.2 (2020-12-17)

Bug Fixes

redo type checking when type has changed in watch mode (#2167) (ec70365), closes #2118 #1122 #943

Features

compiler: allow isolatedModule: true to have ESM support (#2219) (e101db0), closes #1709
presets: add 3 new presets to work with ESM (#2207) (c277858)
allow subclasses of TsJestTransformer to have version checking (#2176) (ca8d7c4)
support jest 27 (#2171) (9909b9d)

Performance Improvements

reuse jest file system cache for isolatedModules: false (#2189) (68f446b)

27.0.0-alpha.1 (2020-11-26)

BREAKING CHANGES

Now both isolatedModules: true and isolatedModule: false codes are in one single class TsCompiler which is an instance created in TsJestCompiler based on config option compiler with value typescript or ttypescript.

27.0.0-alpha.0 (2020-11-11)

Code Refactoring

config: remove support for astTransformers string array (#2129) (1e0b2ce)
config: remove support for packageJson option (#2128) (05916b9)
move jest transformer class to package entry (#2122) (5bbfd06)
config: remove support for tsConfig option (#2127) (3cc9b80)

BREAKING CHANGES

config: packageJson config option is not used in internal ts-jest so this option is now removed
config: One is defining ast transformers in jest.config.js/package.json should change to

// jest.config.js
module.exports = {
   //...
   globals: {
      'ts-jest': {
         astTransformers: {
           before: ['your_before_transformer_path'],
           after: ['your_after_transformer_path'],
           afterDeclarations: ['your_afterDeclarations_transformer_path'],
         }
      }
   }
}

// package.json
{
  "jest": {
     "globals": {
        "ts-jest": {
           "astTransformers": {
              "before": ["your_before_transformer_path"],
              "after": ["your_after_transformer_path"],
              "afterDeclarations": ["your_afterDeclarations_transformer_path"]
           }
        }
     }
  }
}

One currently refers type in jest.config.js

/** @typedef {import('ts-jest')} */
module.exports = {
  //...
}

should change to

/** @typedef {import('ts-jest/dist/types')} */
module.exports = {
  //...
}

Remove possibilities to import mocked, createJestPreset, pathsToModuleNameMapper from package entry. One should change to

import { mocked, createJestPreset, pathsToModuleNameMapper` } from 'ts-jest/utils'

config: One currently uses tsConfig should change to tsconfig in your jest.config.js or package.json

Open source →

26.5.029 Jan 2021

Nothing published for this version

26.4.48 Nov 20202 sources agree

revert usage of @jest/create-cache-key-function (#2108) (dee8231), closes #2080 #2090 #2104

Bug Fixes

revert usage of @jest/create-cache-key-function (#2108) (dee8231), closes #2080 #2090 #2104

Features

testing: expose all types for util mocked (#2096) (b1d072b), closes #2086

Open source →

26.4.4-alpha.04 Nov 2020pre-release

Nothing published for this version

26.4.326 Oct 20202 sources agree

compiler: only exclude test files when initializing compiler (#2062) (7264c13), closes #2061, #2068, #2072, #2073

Bug Fixes

compiler: only exclude test files when initializing compiler (#2062) (7264c13), closes #2061, #2068, #2072, #2073
config: resolve .babelrc file path before attempting to read it (#2071) (681bfef), closes #2064

Features

config: allow to override resolve tsconfig behavior (#2063) (9f46ace)

Open source →

26.4.3-beta.026 Oct 2020pre-release

Nothing published for this version

26.4.223 Oct 2020Deprecated2 sources agree

config: deprecate tsConfig in favor of tsconfig

Features

config: expose several typings as public apis (#2054) (3b6b705)

Performance Improvements

compiler: speed up bootstrap time for isolatedModules:false (#2055) (230b5dd)

DEPRECATIONS

config: deprecate tsConfig in favor of tsconfig (#1997)
config: deprecate packageJson since internal codes don't use it anymore (#2034)

Open source →

26.4.129 Sept 20202 sources agree

utils: MaybeMockedConstructor returns T

Bug Fixes

utils: MaybeMockedConstructor returns T (#1976) (b7712b2)
utils: revert path.join and add check on prefix ends with / (#1989) (3d9035b), closes #1982

26.4.0 (2020-09-20)

Bug Fixes

utils: pathsToModuleNameMapper resolve path mapping with path.join (#1969) (81fce4c), closes #1968
set minimum jest-util version at 26.1.0 (#1914) (f00414c), closes #1913

Features

config: allow custom options in custom transformers (#1966) (1452ce4), closes #1942
transformers: support hoisting when using @jest/globals (#1937) (0e5be15), closes #1593
transformers: add path-mapping custom AST transformer (#1927) (3325186)

Performance Improvements

compiler: remove createProgram for isolatedModules: true to boost startup speed (#1941) (dd84534)

26.3.0 (2020-08-25)

Bug Fixes

config: compute cache key without reading package.json (#1893) (4875a58), closes #1892

Features

support TypeScript 4.0 (#1889) (f070e93)

26.2.0 (2020-08-11)

Bug Fixes

move @types/jest to dependencies to work well with yarn 2 (#1859) (5eb1389), closes #1857

Features

config: support after and afterDeclarations AST transformers (#1831) (be20a7c)
allow opt-out version warning message by environment variable TS_JEST_DISABLE_VER_CHECKER (#1821) (e6b42fc), closes #1774

Open source →

26.4.1-alpha.028 Sept 2020pre-release

Nothing published for this version

26.4.020 Sept 2020

Nothing published for this version

26.3.026 Aug 2020

Nothing published for this version

26.2.011 Aug 2020

Nothing published for this version

26.1.428 Jul 20202 sources agree

compiler: check if test file exists before doing type check (#1827) (cc89d5b), closes #1506

Bug Fixes

compiler: check if test file exists before doing type check (#1827) (cc89d5b), closes #1506

Open source →

26.1.4-alpha.025 Jul 2020pre-release

Nothing published for this version

26.1.317 Jul 20202 sources agree

### Bug Fixes * revert #1793

Bug Fixes

revert #1793 (#1804) (5095525)

Open source →

26.1.213 Jul 20202 sources agree

compiler: use resolveModuleNames TypeScript API to get resolved modules for test files (#1784) (5f26054), closes #1747

Bug Fixes

compiler: use resolveModuleNames TypeScript API to get resolved modules for test files (#1784) (5f26054), closes #1747
config: invalidate cache when other options in tsconfig change (#1788) (6948855)

Performance Improvements

compiler: cache module resolution for isolatedModules: false (#1786) (7f731ed)
compiler: use globsToMatcher from jest-util (#1754) (44f3913)

Open source →

26.1.122 Jun 20202 sources agree

compiler: generate source map correctly when tsconfig mapRoot is set (#1741) (01ac417), closes #1718

Bug Fixes

compiler: generate source map correctly when tsconfig mapRoot is set (#1741) (01ac417), closes #1718
config: show version warning when using ts-jest without babel (#1729) (e512bc0), fixes #1678-issuecomment-641930332, #1678-issuecomment-639528993

26.1.0 (2020-05-30)

Bug Fixes

typing: don't mark BabelConfig as internal type (#1667) (558c307), closes #1666

Features

config: show a warning message when TypeScript target version doesn't match with recommended NodeJs version (#1678) (085bdf5)
config: support multiple paths for pathsToModuleNameMapper (#1690) (a727bd5)
support TypeScript 3.9 (#1653) (fc3d5ad)

26.0.0 (2020-05-15)

Bug Fixes

compiler: return undefined for getScriptVersion when a file doesn't exist in memory cache (#1641) (6851b8e)

Features

support Jest v26 (#1602) (23b7741)

BREAKING CHANGES

Requires a minimum of TypeScript v3.8
Drop support for Node 8

Open source →

26.1.030 May 2020

Nothing published for this version

26.0.015 May 2020

Nothing published for this version

25.10.0-alpha.221 Apr 2020pre-release

Nothing published for this version

25.10.0-alpha.121 Apr 2020pre-releasewithdrawn: This version was published by mistake

Nothing published for this version

25.5.19 May 20202 sources agree

compiler: don't resolve files from build folder for projectReferences

Bug Fixes

compiler: don't resolve files from build folder for projectReferences (#1614) (74b92d3)
config: don't set include value of tsconfig to empty array (#1606) (8a29aaa)

25.5.0 (2020-05-05)

Bug Fixes

compiler: make projectReferences work with isolatedModules: false (#1541) (3e8efbe)
compiler: allow using files provided by tsconfig (#1562) (a9f02bd)
config: verify testMatchPatterns contain RegExp instance or string type values (#1569) (7f85bab)

Features

config: add tsconfig alias to tsConfig option (#1565) (c10eb6d)
config: define 'ts-jest' on ConfigGlobals interface of @jest/types (#1592) (4526392)

Performance Improvements

compiler: don’t write compile output to file system but rely on jest cache (#1561) (d11a4ea)
compiler: improve performance for isolatedModules: false (#1558) (85c09e3)

BREAKING CHANGES

Any custom typing files or files which are needed to be compiled and intended to use with jest need to be defined in files option of tsconfig.

For example:

// tsconfig.json
{
   // ...other configs
   "files": [
       "my-custom-typings.d.ts",
       "my-global-module.ts"
   ]
}

compiler: incremental and compilerHost options are no longer available. Please remove it from your ts-jest config.

25.5.0-beta.0 (2020-04-29)

Bug Fixes

compiler: allow using files provided by tsconfig (#1562) (907a280)
config: verify testMatchPatterns contain RegExp instance or string type values (#1569) (7f85bab)

Features

config: add tsconfig alias to tsConfig option (#1565) (c10eb6d)

Performance Improvements

compiler: don’t write compile output to file system but rely on jest cache (#1561) (07b5f62)

BREAKING CHANGES

Any custom typing files or files which are needed to be compiled and intended to use with jest need to be defined in files option of tsconfig.

For example

// tsconfig.json
{
   // ...other configs
   "files": [
       "my-custom-typings.d.ts".
       "my-global-module.ts"
   ]
}

25.5.0-alpha.0 (2020-04-22)

Bug Fixes

compiler: make projectReferences work with isolatedModules: false (#1541) (3e8efbe)

Performance

compiler: improve performance for isolatedModules: false (#1558) (85c09e3)

BREAKING CHANGES

config: compilerHost and incremental options are no longer available

25.4.0 (2020-04-17)

Bug Fixes

compiler: make projectReferences work with isolatedModules: true (#1527) (aa6b74c)
compiler: make sure LanguageService updated with test file information before getting diagnostics for test file (#1507) (311eaeb)
config: set default outDir when allowJs is true and no outDir in tsconfig (#1502) (1a287ad)
config: use original jest config object instead of stringified config (#1511) (4f0bb33)

Open source →

25.5.1-alpha.07 May 2020pre-release

Nothing published for this version

25.5.06 May 2020

Nothing published for this version

25.5.0-beta.029 Apr 2020pre-release

Nothing published for this version

25.5.0-alpha.022 Apr 2020pre-release

Nothing published for this version

25.4.017 Apr 2020

Nothing published for this version

25.3.13 Apr 20202 sources agree

only do type checking while compiling file

Bug Fixes

only do type checking while compiling file (#1483) (dbc0a08)
config: set default outDir for enabled allowJs without outDir (#1472) (57c7af0)

25.3.0 (2020-03-30)

Bug Fixes

add jest-config to dependencies list (6d9e0d8)
always do type check for all files provided to ts-jest transformer for non-watch mode (#1450) (107e062)

Chores

docs: add TROUBLESHOOTING (96cd9b3)

Features

compiler: expose internal ts Program via ConfigSet TsCompiler (#1433) (7153246)
config: add incremental option (#1418) (5a69bce)

BREAKING CHANGES

config: improve diagnostics message (#1444) (96cd9b3). This will affect to any snapshots or assertion against diagnostics messages

25.2.1 (2020-02-21)

Bug Fixes

compiler: allow transformation of typescript files in node_modules (#1385) (814405e)
docs: fixing slack link and some minor typos in documenation (#1404) (3e2e008)
transformer: add deepUnmock to hoist method list (#1372) (0fbbc00)
util: use resolve package typescript package in yarn workspaces (#1377) (a63808c)

25.2.0 (2020-02-03)

Bug Fixes

config: let babel-jest handle loading babel config (#1370)

25.1.0 (2020-01-30)

Bug Fixes

jest 25 type definitions (#1363) (ba82a9e)

25.0.0 (2020-01-23)

Features

support Jest 25 (#1355)

24.3.0 (2020-01-07)

Bug Fixes

config: support babel config file path as string (#1332) (78a53c2)

24.2.0 (2019-11-22)

Bug Fixes

compiler: pass filename to sha function instead of file extension (ac1ac97)
transformers: hoist jest.enableAutomock and jest.disableAutomock (ac50bc3)
typescript serviceHost cache miss on Windows operating systems (26ee731)

24.1.0 (2019-09-12)

Bug Fixes

perf: add cache for fs calls (#908) (3dada81)
#825 handle symlinked modules (ala pnpm) correctly (e190b23)
handle tsBuildInfoFile option (f9583e9), closes #1095
types: unforce esModuleInterop in tsconfig.json (c2d39b6)

Open source →

25.3.030 Mar 2020

Nothing published for this version

25.2.119 Feb 2020

Nothing published for this version

25.2.03 Feb 2020

Nothing published for this version

25.1.030 Jan 2020

Nothing published for this version

25.0.023 Jan 2020

Nothing published for this version

24.3.07 Jan 2020

Nothing published for this version

24.2.022 Nov 2019

Nothing published for this version

24.1.012 Sept 2019

handle tsBuildInfoFile option (f9583e9), closes #1095

Bug Fixes

#825 handle symlinked modules (ala pnpm) correctly (e190b23)
handle tsBuildInfoFile option (f9583e9), closes #1095
perf: add cache for fs calls (#908) (3dada81)
types: unforce esModuleInterop in tsconfig.json (c2d39b6)

Open source →

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