ts-jest

ts-jest

Version 29.3.2
Published 11 days ago
339 kB
10 dependencies
MIT license

Install

npm i ts-jest

yarn add ts-jest

pnpm add ts-jest

Overview

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

Index

Variables

variable _default

const _default: {
    createTransformer(tsJestConfig?: TsJestTransformerOptions): TsJestTransformer;
};

variable DECLARATION_TYPE_EXT

const DECLARATION_TYPE_EXT: string;

variable ESM_JS_TRANSFORM_PATTERN

const ESM_JS_TRANSFORM_PATTERN: string;

variable ESM_TS_JS_TRANSFORM_PATTERN

const ESM_TS_JS_TRANSFORM_PATTERN: string;

variable ESM_TS_TRANSFORM_PATTERN

const ESM_TS_TRANSFORM_PATTERN: string;

variable JS_EXT_TO_TREAT_AS_ESM

const JS_EXT_TO_TREAT_AS_ESM: string[];

variable JS_JSX_EXTENSIONS

const JS_JSX_EXTENSIONS: string[];

variable JS_JSX_REGEX

const JS_JSX_REGEX: RegExp;

variable JS_TRANSFORM_PATTERN

const JS_TRANSFORM_PATTERN: string;

variable LINE_FEED

const LINE_FEED: string;

variable rootLogger

let rootLogger: any;

variable TS_EXT_TO_TREAT_AS_ESM

const TS_EXT_TO_TREAT_AS_ESM: string[];

variable TS_JS_TRANSFORM_PATTERN

const TS_JS_TRANSFORM_PATTERN: string;

variable TS_TRANSFORM_PATTERN

const TS_TRANSFORM_PATTERN: string;

variable TS_TSX_REGEX

const TS_TSX_REGEX: RegExp;

Functions

function createDefaultEsmLegacyPreset

createDefaultEsmLegacyPreset: (
    tsJestTransformOptions?: DefaultEsmTransformOptions
) => DefaultEsmLegacyPreset;

function createDefaultEsmPreset

createDefaultEsmPreset: (
    tsJestTransformOptions?: DefaultEsmTransformOptions
) => DefaultEsmPreset;

function createDefaultLegacyPreset

createDefaultLegacyPreset: (
    tsJestTransformOptions?: DefaultTransformOptions
) => DefaultLegacyPreset;

function createDefaultPreset

createDefaultPreset: (
    tsJestTransformOptions?: DefaultTransformOptions
) => DefaultPreset;

function createJestPreset

createJestPreset: (
    legacy?: boolean,
    allowJs?: boolean,
    extraOptions?: Config.InitialOptions
) => TsJestPresets;

Deprecated
use other functions below instead

function createJsWithBabelEsmLegacyPreset

createJsWithBabelEsmLegacyPreset: (
    tsJestTransformOptions?: JsWithBabelEsmTransformOptions
) => JsWithBabelEsmLegacyPreset;

function createJsWithBabelEsmPreset

createJsWithBabelEsmPreset: (
    tsJestTransformOptions?: JsWithBabelEsmTransformOptions
) => JsWithBabelEsmPreset;

function createJsWithBabelLegacyPreset

createJsWithBabelLegacyPreset: (
    tsJestTransformOptions?: JsWithBabelTransformerOptions
) => JsWithBabelLegacyPreset;

function createJsWithBabelPreset

createJsWithBabelPreset: (
    tsJestTransformOptions?: JsWithBabelTransformerOptions
) => JsWithBabelPreset;

function createJsWithTsEsmLegacyPreset

createJsWithTsEsmLegacyPreset: (
    tsJestTransformOptions?: JsWithTsEsmTransformOptions
) => JsWithTsEsmLegacyPreset;

function createJsWithTsEsmPreset

createJsWithTsEsmPreset: (
    tsJestTransformOptions?: JsWithTsEsmTransformOptions
) => JsWithTsEsmPreset;

function createJsWithTsLegacyPreset

createJsWithTsLegacyPreset: (
    tsJestTransformOptions?: JsWithTsTransformOptions
) => JsWithTsLegacyPreset;

function createJsWithTsPreset

createJsWithTsPreset: (
    tsJestTransformOptions?: JsWithTsTransformOptions
) => JsWithTsPreset;

function parse

parse: (input: string) => any;

function pathsToModuleNameMapper

pathsToModuleNameMapper: (
    mapping: TsPathMapping,
    { prefix, useESM }?: { prefix?: string; useESM?: boolean }
) => Config.InitialOptions;

function stringify

stringify: (input: unknown) => string;

Classes

class ConfigSet

class ConfigSet {}

constructor

constructor(jestConfig: any, parentLogger?: any);

property cacheSuffix

cacheSuffix: string;

property compilerModule

readonly compilerModule: any;

property cwd

readonly cwd: string;

property isolatedModules

readonly isolatedModules: boolean;

property logger

readonly logger: Logger;

property parentLogger

readonly parentLogger?: any;

property parsedTsConfig

parsedTsConfig: any;

property resolvedTransformers

resolvedTransformers: TsJestAstTransformer;

property rootDir

readonly rootDir: string;

property tsCacheDir

tsCacheDir: string;

property tsJestDigest

readonly tsJestDigest: string;

Use by e2e, don't mark as internal

property useESM

useESM: boolean;

method isTestFile

isTestFile: (fileName: string) => boolean;

method raiseDiagnostics

raiseDiagnostics: (
    diagnostics: ts.Diagnostic[],
    filePath?: string,
    logger?: Logger
) => void;

method resolvePath

resolvePath: (
    inputPath: string,
    {
        throwIfMissing,
        nodeResolve,
    }?: { throwIfMissing?: boolean; nodeResolve?: boolean }
) => string;

method shouldReportDiagnostics

shouldReportDiagnostics: (filePath: string) => boolean;

method shouldStringifyContent

shouldStringifyContent: (filePath: string) => boolean;

class JsonableValue

class JsonableValue<V = Record<string, any>> {}

constructor

constructor(value: {});

property serialized

readonly serialized: string;

property value

value: {};

method toString

toString: () => string;

method valueOf

valueOf: () => V;

class TsCompiler

class TsCompiler implements TsCompilerInstance {}

constructor

constructor(configSet: ConfigSet, runtimeCacheFS: StringMap);

property configSet

readonly configSet: ConfigSet;

property program

program: any;

property runtimeCacheFS

readonly runtimeCacheFS: StringMap;

method getCompiledOutput

getCompiledOutput: (
    fileContent: string,
    fileName: string,
    options: TsJestCompileOptions
) => CompiledOutput;

method getResolvedModules

getResolvedModules: (
    fileContent: string,
    fileName: string,
    runtimeCacheFS: StringMap
) => string[];

class TsJestCompiler

class TsJestCompiler implements CompilerInstance {}

constructor

constructor(configSet: ConfigSet, runtimeCacheFS: StringMap);

method getCompiledOutput

getCompiledOutput: (
    fileContent: string,
    fileName: string,
    options: TsJestCompileOptions
) => CompiledOutput;

method getResolvedModules

getResolvedModules: (
    fileContent: string,
    fileName: string,
    runtimeCacheFS: StringMap
) => string[];

class TsJestTransformer

class TsJestTransformer implements SyncTransformer<TsJestTransformerOptions> {}

constructor

constructor(transformerOptions?: TsJestGlobalOptions);

method getCacheKey

getCacheKey: (
    fileContent: string,
    filePath: string,
    transformOptions: TransformOptions<TsJestGlobalOptions>
) => string;

Jest uses this to cache the compiled version of a file
See Also
- https://github.com/facebook/jest/blob/v23.5.0/packages/jest-runtime/src/script_transformer.js#L61-L90
Modifiers
- @public

method getCacheKeyAsync

getCacheKeyAsync: (
    sourceText: string,
    sourcePath: string,
    transformOptions: TransformOptions<TsJestGlobalOptions>
) => Promise<string>;

method process

process: (
    sourceText: string,
    sourcePath: string,
    transformOptions: TransformOptions<TsJestGlobalOptions>
) => TransformedSource;

method processAsync

processAsync: (
    sourceText: string,
    sourcePath: string,
    transformOptions: TransformOptions<TsJestGlobalOptions>
) => Promise<TransformedSource>;

Interfaces

interface AstTransformer

interface AstTransformer<T = Record<string, unknown>> {}

property options

options?: T;

property path

path: string;

interface AstTransformerDesc

interface AstTransformerDesc<T = Record<string, unknown>> {}

property name

name: string;

property options

options?: T;

property version

version: number;

method factory

factory: (
    tsCompiler: TsCompilerInstance,
    opts?: T
) =>
    | _ts.TransformerFactory<_ts.SourceFile>
    | _ts.TransformerFactory<_ts.Bundle | _ts.SourceFile>;

interface CompiledOutput

interface CompiledOutput extends TransformedSource {}

property diagnostics

diagnostics?: _ts.Diagnostic[];

interface CompilerInstance

interface CompilerInstance {}

method getCompiledOutput

getCompiledOutput: (
    fileContent: string,
    fileName: string,
    options: TsJestCompileOptions
) => CompiledOutput;

method getResolvedModules

getResolvedModules: (
    fileContent: string,
    fileName: string,
    runtimeCacheFS: StringMap
) => string[];

interface ConfigCustomTransformer

interface ConfigCustomTransformer {}

property after

after?: Array<string | AstTransformer>;

property afterDeclarations

afterDeclarations?: Array<string | AstTransformer>;

property before

before?: Array<string | AstTransformer>;

interface DepGraphInfo

interface DepGraphInfo {}

property fileContent

fileContent: string;

property resolvedModuleNames

resolvedModuleNames: string[];

interface GlobalConfigTsJest

interface GlobalConfigTsJest extends Config.ConfigGlobals {}

For typings in jest.config.ts
Deprecated
use JestConfigWithTsJest instead

property 'ts-jest'

'ts-jest'?: TsJestGlobalOptions;

interface InitialOptionsTsJest

interface InitialOptionsTsJest extends Config.InitialOptions {}

Deprecated
use JestConfigWithTsJest instead

property globals

globals?: GlobalConfigTsJest;

interface JestConfigWithTsJest

interface JestConfigWithTsJest extends Omit<Config.InitialOptions, 'transform'> {}

property transform

transform?: {
    [regex: string]:
        | 'ts-jest'
        | 'ts-jest/legacy'
        | ['ts-jest', TsJestTransformerOptions]
        | ['ts-jest/legacy', TsJestTransformerOptions]
        | string
        | Config.TransformerConfig;
};

interface ProjectConfigTsJest

interface ProjectConfigTsJest extends Config.ProjectConfig {}

For transformers which extends ts-jest
Deprecated
use JestConfigWithTsJest instead

property globals

globals: GlobalConfigTsJest;

interface RawCompilerOptions

interface RawCompilerOptions {}

Deprecated
This interface will be replaced with TsConfigJson.CompilerOptions in the next major release.

property allowArbitraryExtensions

allowArbitraryExtensions?: boolean | null;

Enable importing files with any extension, provided a declaration file is present.

property allowImportingTsExtensions

allowImportingTsExtensions?: boolean | null;

Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set.

property allowJs

allowJs?: boolean | null;

Allow JavaScript files to be a part of your program. Use the checkJS option to get errors from these files.

property allowSyntheticDefaultImports

allowSyntheticDefaultImports?: boolean | null;

Allow 'import x from y' when a module doesn't have a default export.

property allowUmdGlobalAccess

allowUmdGlobalAccess?: boolean | null;

Allow accessing UMD globals from modules.

property allowUnreachableCode

allowUnreachableCode?: boolean | null;

Disable error reporting for unreachable code.

property allowUnusedLabels

allowUnusedLabels?: boolean | null;

Disable error reporting for unused labels.

property alwaysStrict

alwaysStrict?: boolean | null;

Ensure 'use strict' is always emitted.

property assumeChangesOnlyAffectDirectDependencies

assumeChangesOnlyAffectDirectDependencies?: boolean | null;

Have recompiles in '--incremental' and '--watch' assume that changes within a file will only affect files directly depending on it. Requires TypeScript version 3.8 or later.

property baseUrl

baseUrl?: string | null;

Specify the base directory to resolve non-relative module names.

property charset

charset?: string | null;

No longer supported. In early versions, manually set the text encoding for reading files.

property checkJs

checkJs?: boolean | null;

Enable error reporting in type-checked JavaScript files.

property composite

composite?: boolean | null;

Enable constraints that allow a TypeScript project to be used with project references.

property customConditions

customConditions?: Array<string | null> | null;

Conditions to set in addition to the resolver-specific defaults when resolving imports.

property declaration

declaration?: boolean | null;

Generate .d.ts files from TypeScript and JavaScript files in your project.

property declarationDir

declarationDir?: string | null;

Specify the output directory for generated declaration files.

property declarationMap

declarationMap?: boolean | null;

Create sourcemaps for d.ts files.

property diagnostics

diagnostics?: boolean | null;

Output compiler performance information after building.

property disableReferencedProjectLoad

disableReferencedProjectLoad?: boolean | null;

Reduce the number of projects loaded automatically by TypeScript.

property disableSizeLimit

disableSizeLimit?: boolean | null;

Remove the 20mb cap on total source code size for JavaScript files in the TypeScript language server.

property disableSolutionSearching

disableSolutionSearching?: boolean | null;

Opt a project out of multi-project reference checking when editing.

property disableSourceOfProjectReferenceRedirect

disableSourceOfProjectReferenceRedirect?: boolean | null;

Disable preferring source files instead of declaration files when referencing composite projects

property downlevelIteration

downlevelIteration?: boolean | null;

Emit more compliant, but verbose and less performant JavaScript for iteration.

property emitBOM

emitBOM?: boolean | null;

Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files.

property emitDeclarationOnly

emitDeclarationOnly?: boolean | null;

Only output d.ts files and not JavaScript files.

property emitDecoratorMetadata

emitDecoratorMetadata?: boolean | null;

Emit design-type metadata for decorated declarations in source files.

property esModuleInterop

esModuleInterop?: boolean | null;

Emit additional JavaScript to ease support for importing CommonJS modules. This enables allowSyntheticDefaultImports for type compatibility.

property exactOptionalPropertyTypes

exactOptionalPropertyTypes?: boolean | null;

Differentiate between undefined and not present when type checking

property experimentalDecorators

experimentalDecorators?: boolean | null;

Enable experimental support for TC39 stage 2 draft decorators.

property extendedDiagnostics

extendedDiagnostics?: boolean | null;

Output more detailed compiler performance information after building.

property fallbackPolling

fallbackPolling?:
    | 'fixedPollingInterval'
    | 'priorityPollingInterval'
    | 'dynamicPriorityPolling'
    | 'fixedInterval'
    | 'priorityInterval'
    | 'dynamicPriority'
    | 'fixedChunkSize';

Specify the polling strategy to use when the system runs out of or doesn't support native file watchers. Requires TypeScript version 3.8 or later.

property forceConsistentCasingInFileNames

forceConsistentCasingInFileNames?: boolean | null;

Ensure that casing is correct in imports.

property generateCpuProfile

generateCpuProfile?: string | null;

Emit a v8 CPU profile of the compiler run for debugging.

property importHelpers

importHelpers?: boolean | null;

Allow importing helper functions from tslib once per project, instead of including them per-file.

property importsNotUsedAsValues

importsNotUsedAsValues?: 'remove' | 'preserve' | 'error';

Specify emit/checking behavior for imports that are only used for types.

property incremental

incremental?: boolean | null;

Enable incremental compilation. Requires TypeScript version 3.4 or later.

property inlineSourceMap

inlineSourceMap?: boolean | null;

Include sourcemap files inside the emitted JavaScript.

property inlineSources

inlineSources?: boolean | null;

Include source code in the sourcemaps inside the emitted JavaScript.

property isolatedModules

isolatedModules?: boolean | null;

Ensure that each file can be safely transpiled without relying on other imports.

property jsx

jsx?: 'preserve' | 'react' | 'react-jsx' | 'react-jsxdev' | 'react-native';

Specify what JSX code is generated.

property jsxFactory

jsxFactory?: string | null;

Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'

property jsxFragmentFactory

jsxFragmentFactory?: string | null;

Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'.

property jsxImportSource

jsxImportSource?: string | null;

Specify module specifier used to import the JSX factory functions when using jsx: react-jsx.

property keyofStringsOnly

keyofStringsOnly?: boolean | null;

Make keyof only return strings instead of string, numbers or symbols. Legacy option.

property lib

lib?: Array<
    (
        | (
              | 'ES5'
              | 'ES6'
              | 'ES2015'
              | 'ES2015.Collection'
              | 'ES2015.Core'
              | 'ES2015.Generator'
              | 'ES2015.Iterable'
              | 'ES2015.Promise'
              | 'ES2015.Proxy'
              | 'ES2015.Reflect'
              | 'ES2015.Symbol.WellKnown'
              | 'ES2015.Symbol'
              | 'ES2016'
              | 'ES2016.Array.Include'
              | 'ES2017'
              | 'ES2017.Intl'
              | 'ES2017.Object'
              | 'ES2017.SharedMemory'
              | 'ES2017.String'
              | 'ES2017.TypedArrays'
              | 'ES2018'
              | 'ES2018.AsyncGenerator'
              | 'ES2018.AsyncIterable'
              | 'ES2018.Intl'
              | 'ES2018.Promise'
              | 'ES2018.Regexp'
              | 'ES2019'
              | 'ES2019.Array'
              | 'ES2019.Intl'
              | 'ES2019.Object'
              | 'ES2019.String'
              | 'ES2019.Symbol'
              | 'ES2020'
              | 'ES2020.BigInt'
              | 'ES2020.Promise'
              | 'ES2020.String'
              | 'ES2020.Symbol.WellKnown'
              | 'ESNext'
              | 'ESNext.Array'
              | 'ESNext.AsyncIterable'
              | 'ESNext.BigInt'
              | 'ESNext.Intl'
              | 'ESNext.Promise'
              | 'ESNext.String'
              | 'ESNext.Symbol'
              | 'DOM'
              | 'DOM.AsyncIterable'
              | 'DOM.Iterable'
              | 'ScriptHost'
              | 'WebWorker'
              | 'WebWorker.AsyncIterable'
              | 'WebWorker.ImportScripts'
              | 'Webworker.Iterable'
              | 'ES7'
              | 'ES2021'
              | 'ES2020.SharedMemory'
              | 'ES2020.Intl'
              | 'ES2020.Date'
              | 'ES2020.Number'
              | 'ES2021.Promise'
              | 'ES2021.String'
              | 'ES2021.WeakRef'
              | 'ESNext.WeakRef'
              | 'ES2021.Intl'
              | 'ES2022'
              | 'ES2022.Array'
              | 'ES2022.Error'
              | 'ES2022.Intl'
              | 'ES2022.Object'
              | 'ES2022.String'
              | 'ES2022.SharedMemory'
              | 'ES2022.RegExp'
              | 'ES2023'
              | 'ES2023.Array'
              | 'Decorators'
              | 'Decorators.Legacy'
              | 'ES2017.Date'
              | 'ES2023.Collection'
              | 'ESNext.Decorators'
              | 'ESNext.Disposable'
          )
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
        | {
              [k: string]: unknown;
          }
    ) &
        (
            | ((
                  | (
                        | 'ES5'
                        | 'ES6'
                        | 'ES2015'
                        | 'ES2015.Collection'
                        | 'ES2015.Core'
                        | 'ES2015.Generator'
                        | 'ES2015.Iterable'
                        | 'ES2015.Promise'
                        | 'ES2015.Proxy'
                        | 'ES2015.Reflect'
                        | 'ES2015.Symbol.WellKnown'
                        | 'ES2015.Symbol'
                        | 'ES2016'
                        | 'ES2016.Array.Include'
                        | 'ES2017'
                        | 'ES2017.Intl'
                        | 'ES2017.Object'
                        | 'ES2017.SharedMemory'
                        | 'ES2017.String'
                        | 'ES2017.TypedArrays'
                        | 'ES2018'
                        | 'ES2018.AsyncGenerator'
                        | 'ES2018.AsyncIterable'
                        | 'ES2018.Intl'
                        | 'ES2018.Promise'
                        | 'ES2018.Regexp'
                        | 'ES2019'
                        | 'ES2019.Array'
                        | 'ES2019.Intl'
                        | 'ES2019.Object'
                        | 'ES2019.String'
                        | 'ES2019.Symbol'
                        | 'ES2020'
                        | 'ES2020.BigInt'
                        | 'ES2020.Promise'
                        | 'ES2020.String'
                        | 'ES2020.Symbol.WellKnown'
                        | 'ESNext'
                        | 'ESNext.Array'
                        | 'ESNext.AsyncIterable'
                        | 'ESNext.BigInt'
                        | 'ESNext.Intl'
                        | 'ESNext.Promise'
                        | 'ESNext.String'
                        | 'ESNext.Symbol'
                        | 'DOM'
                        | 'DOM.AsyncIterable'
                        | 'DOM.Iterable'
                        | 'ScriptHost'
                        | 'WebWorker'
                        | 'WebWorker.AsyncIterable'
                        | 'WebWorker.ImportScripts'
                        | 'Webworker.Iterable'
                        | 'ES7'
                        | 'ES2021'
                        | 'ES2020.SharedMemory'
                        | 'ES2020.Intl'
                        | 'ES2020.Date'
                        | 'ES2020.Number'
                        | 'ES2021.Promise'
                        | 'ES2021.String'
                        | 'ES2021.WeakRef'
                        | 'ESNext.WeakRef'
                        | 'ES2021.Intl'
                        | 'ES2022'
                        | 'ES2022.Array'
                        | 'ES2022.Error'
                        | 'ES2022.Intl'
                        | 'ES2022.Object'
                        | 'ES2022.String'
                        | 'ES2022.SharedMemory'
                        | 'ES2022.RegExp'
                        | 'ES2023'
                        | 'ES2023.Array'
                        | 'Decorators'
                        | 'Decorators.Legacy'
                        | 'ES2017.Date'
                        | 'ES2023.Collection'
                        | 'ESNext.Decorators'
                        | 'ESNext.Disposable'
                    )
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
              ) &
                  string)
            | ((
                  | (
                        | 'ES5'
                        | 'ES6'
                        | 'ES2015'
                        | 'ES2015.Collection'
                        | 'ES2015.Core'
                        | 'ES2015.Generator'
                        | 'ES2015.Iterable'
                        | 'ES2015.Promise'
                        | 'ES2015.Proxy'
                        | 'ES2015.Reflect'
                        | 'ES2015.Symbol.WellKnown'
                        | 'ES2015.Symbol'
                        | 'ES2016'
                        | 'ES2016.Array.Include'
                        | 'ES2017'
                        | 'ES2017.Intl'
                        | 'ES2017.Object'
                        | 'ES2017.SharedMemory'
                        | 'ES2017.String'
                        | 'ES2017.TypedArrays'
                        | 'ES2018'
                        | 'ES2018.AsyncGenerator'
                        | 'ES2018.AsyncIterable'
                        | 'ES2018.Intl'
                        | 'ES2018.Promise'
                        | 'ES2018.Regexp'
                        | 'ES2019'
                        | 'ES2019.Array'
                        | 'ES2019.Intl'
                        | 'ES2019.Object'
                        | 'ES2019.String'
                        | 'ES2019.Symbol'
                        | 'ES2020'
                        | 'ES2020.BigInt'
                        | 'ES2020.Promise'
                        | 'ES2020.String'
                        | 'ES2020.Symbol.WellKnown'
                        | 'ESNext'
                        | 'ESNext.Array'
                        | 'ESNext.AsyncIterable'
                        | 'ESNext.BigInt'
                        | 'ESNext.Intl'
                        | 'ESNext.Promise'
                        | 'ESNext.String'
                        | 'ESNext.Symbol'
                        | 'DOM'
                        | 'DOM.AsyncIterable'
                        | 'DOM.Iterable'
                        | 'ScriptHost'
                        | 'WebWorker'
                        | 'WebWorker.AsyncIterable'
                        | 'WebWorker.ImportScripts'
                        | 'Webworker.Iterable'
                        | 'ES7'
                        | 'ES2021'
                        | 'ES2020.SharedMemory'
                        | 'ES2020.Intl'
                        | 'ES2020.Date'
                        | 'ES2020.Number'
                        | 'ES2021.Promise'
                        | 'ES2021.String'
                        | 'ES2021.WeakRef'
                        | 'ESNext.WeakRef'
                        | 'ES2021.Intl'
                        | 'ES2022'
                        | 'ES2022.Array'
                        | 'ES2022.Error'
                        | 'ES2022.Intl'
                        | 'ES2022.Object'
                        | 'ES2022.String'
                        | 'ES2022.SharedMemory'
                        | 'ES2022.RegExp'
                        | 'ES2023'
                        | 'ES2023.Array'
                        | 'Decorators'
                        | 'Decorators.Legacy'
                        | 'ES2017.Date'
                        | 'ES2023.Collection'
                        | 'ESNext.Decorators'
                        | 'ESNext.Disposable'
                    )
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
                  | {
                        [k: string]: unknown;
                    }
              ) &
                  null)
        )
> | null;

Specify a set of bundled library declaration files that describe the target runtime environment.

property listEmittedFiles

listEmittedFiles?: boolean | null;

Print the names of emitted files after a compilation.

property listFiles

listFiles?: boolean | null;

Print all of the files read during the compilation.

property listFilesOnly

listFilesOnly?: boolean | null;

Print names of files that are part of the compilation and then stop processing.

property mapRoot

mapRoot?: string | null;

Specify the location where debugger should locate map files instead of generated locations.

property maxNodeModuleJsDepth

maxNodeModuleJsDepth?: number | null;

Specify the maximum folder depth used for checking JavaScript files from node_modules. Only applicable with allowJs.

property module

module?: (
    | 'CommonJS'
    | 'AMD'
    | 'System'
    | 'UMD'
    | 'ES6'
    | 'ES2015'
    | 'ES2020'
    | 'ESNext'
    | 'None'
    | 'ES2022'
    | 'Node16'
    | 'NodeNext'
    | 'Preserve'
) &
    (
        | ((
              | (
                    | 'CommonJS'
                    | 'AMD'
                    | 'System'
                    | 'UMD'
                    | 'ES6'
                    | 'ES2015'
                    | 'ES2020'
                    | 'ESNext'
                    | 'None'
                    | 'ES2022'
                    | 'Node16'
                    | 'NodeNext'
                    | 'Preserve'
                )
              | {
                    [k: string]: unknown;
                }
          ) &
              string)
        | ((
              | (
                    | 'CommonJS'
                    | 'AMD'
                    | 'System'
                    | 'UMD'
                    | 'ES6'
                    | 'ES2015'
                    | 'ES2020'
                    | 'ESNext'
                    | 'None'
                    | 'ES2022'
                    | 'Node16'
                    | 'NodeNext'
                    | 'Preserve'
                )
              | {
                    [k: string]: unknown;
                }
          ) &
              null)
    );

Specify what module code is generated.

property moduleDetection

moduleDetection?: 'auto' | 'legacy' | 'force';

Specify how TypeScript determine a file as module.

property moduleResolution

moduleResolution?: (
    | 'Classic'
    | 'Node'
    | 'Node10'
    | 'Node16'
    | 'NodeNext'
    | 'Bundler'
) &
    (
        | ((
              | (
                    | 'Classic'
                    | 'Node'
                    | 'Node10'
                    | 'Node16'
                    | 'NodeNext'
                    | 'Bundler'
                )
              | {
                    [k: string]: unknown;
                }
          ) &
              string)
        | ((
              | (
                    | 'Classic'
                    | 'Node'
                    | 'Node10'
                    | 'Node16'
                    | 'NodeNext'
                    | 'Bundler'
                )
              | {
                    [k: string]: unknown;
                }
          ) &
              null)
    );

Specify how TypeScript looks up a file from a given module specifier.

property newLine

newLine?: ('crlf' | 'lf') &
    (
        | ((
              | ('crlf' | 'lf')
              | {
                    [k: string]: unknown;
                }
          ) &
              string)
        | ((
              | ('crlf' | 'lf')
              | {
                    [k: string]: unknown;
                }
          ) &
              null)
    );

Set the newline character for emitting files.

property noEmit

noEmit?: boolean | null;

Disable emitting file from a compilation.

property noEmitHelpers

noEmitHelpers?: boolean | null;

Disable generating custom helper functions like __extends in compiled output.

property noEmitOnError

noEmitOnError?: boolean | null;

Disable emitting files if any type checking errors are reported.

property noErrorTruncation

noErrorTruncation?: boolean | null;

Disable truncating types in error messages.

property noFallthroughCasesInSwitch

noFallthroughCasesInSwitch?: boolean | null;

Enable error reporting for fallthrough cases in switch statements.

property noImplicitAny

noImplicitAny?: boolean | null;

Enable error reporting for expressions and declarations with an implied any type..

property noImplicitOverride

noImplicitOverride?: boolean | null;

Ensure overriding members in derived classes are marked with an override modifier.

property noImplicitReturns

noImplicitReturns?: boolean | null;

Enable error reporting for codepaths that do not explicitly return in a function.

property noImplicitThis

noImplicitThis?: boolean | null;

Enable error reporting when this is given the type any.

property noImplicitUseStrict

noImplicitUseStrict?: boolean | null;

Disable adding 'use strict' directives in emitted JavaScript files.

property noLib

noLib?: boolean | null;

Disable including any library files, including the default lib.d.ts.

property noPropertyAccessFromIndexSignature

noPropertyAccessFromIndexSignature?: boolean | null;

Enforces using indexed accessors for keys declared using an indexed type

property noResolve

noResolve?: boolean | null;

Disallow imports, requires or <reference>s from expanding the number of files TypeScript should add to a project.

property noStrictGenericChecks

noStrictGenericChecks?: boolean | null;

Disable strict checking of generic signatures in function types.

property noUncheckedIndexedAccess

noUncheckedIndexedAccess?: boolean | null;

Add undefined to a type when accessed using an index.

property noUnusedLocals

noUnusedLocals?: boolean | null;

Enable error reporting when a local variables aren't read.

property noUnusedParameters

noUnusedParameters?: boolean | null;

Raise an error when a function parameter isn't read

property outDir

outDir?: string | null;

Specify an output folder for all emitted files.

property outFile

outFile?: string | null;

Specify a file that bundles all outputs into one JavaScript file. If declaration is true, also designates a file that bundles all .d.ts output.

property paths

paths?: {
    [k: string]: Array<string | null> | null;
} | null;

Specify a set of entries that re-map imports to additional lookup locations.

property plugins

plugins?: Array<{
    /**
     * Plugin name.
     */
    name?: string | null;
    [k: string]: unknown;
} | null> | null;

Specify a list of language service plugins to include.

property preserveConstEnums

preserveConstEnums?: boolean | null;

Disable erasing const enum declarations in generated code.

property preserveSymlinks

preserveSymlinks?: boolean | null;

Disable resolving symlinks to their realpath. This correlates to the same flag in node.

property preserveValueImports

preserveValueImports?: boolean | null;

Preserve unused imported values in the JavaScript output that would otherwise be removed

property preserveWatchOutput

preserveWatchOutput?: boolean | null;

Disable wiping the console in watch mode

property pretty

pretty?: boolean | null;

Enable color and formatting in output to make compiler errors easier to read

property reactNamespace

reactNamespace?: string | null;

Specify the object invoked for createElement. This only applies when targeting react JSX emit.

property removeComments

removeComments?: boolean | null;

Disable emitting comments.

property resolveJsonModule

resolveJsonModule?: boolean | null;

Enable importing .json files

property resolvePackageJsonExports

resolvePackageJsonExports?: boolean | null;

Use the package.json 'exports' field when resolving package imports.

property resolvePackageJsonImports

resolvePackageJsonImports?: boolean | null;

Use the package.json 'imports' field when resolving imports.

property rootDir

rootDir?: string | null;

Specify the root folder within your source files.

property rootDirs

rootDirs?: Array<string | null> | null;

Allow multiple folders to be treated as one when resolving modules.

property skipDefaultLibCheck

skipDefaultLibCheck?: boolean | null;

Skip type checking .d.ts files that are included with TypeScript.

property skipLibCheck

skipLibCheck?: boolean | null;

Skip type checking all .d.ts files.

property sourceMap

sourceMap?: boolean | null;

Create source map files for emitted JavaScript files.

property sourceRoot

sourceRoot?: string | null;

Specify the root path for debuggers to find the reference source code.

property strict

strict?: boolean | null;

Enable all strict type checking options.

property strictBindCallApply

strictBindCallApply?: boolean | null;

Check that the arguments for bind, call, and apply methods match the original function.

property strictFunctionTypes

strictFunctionTypes?: boolean | null;

When assigning functions, check to ensure parameters and the return values are subtype-compatible.

property strictNullChecks

strictNullChecks?: boolean | null;

When type checking, take into account null and undefined.

property strictPropertyInitialization

strictPropertyInitialization?: boolean | null;

Check for class properties that are declared but not set in the constructor.

property suppressExcessPropertyErrors

suppressExcessPropertyErrors?: boolean | null;

Disable reporting of excess property errors during the creation of object literals.

property suppressImplicitAnyIndexErrors

suppressImplicitAnyIndexErrors?: boolean | null;

Suppress noImplicitAny errors when indexing objects that lack index signatures.

property target

target?: (
    | 'ES3'
    | 'ES5'
    | 'ES6'
    | 'ES2015'
    | 'ES2016'
    | 'ES2017'
    | 'ES2018'
    | 'ES2019'
    | 'ES2020'
    | 'ES2021'
    | 'ES2022'
    | 'ES2023'
    | 'ESNext'
) &
    (
        | ((
              | (
                    | 'ES3'
                    | 'ES5'
                    | 'ES6'
                    | 'ES2015'
                    | 'ES2016'
                    | 'ES2017'
                    | 'ES2018'
                    | 'ES2019'
                    | 'ES2020'
                    | 'ES2021'
                    | 'ES2022'
                    | 'ES2023'
                    | 'ESNext'
                )
              | {
                    [k: string]: unknown;
                }
          ) &
              string)
        | ((
              | (
                    | 'ES3'
                    | 'ES5'
                    | 'ES6'
                    | 'ES2015'
                    | 'ES2016'
                    | 'ES2017'
                    | 'ES2018'
                    | 'ES2019'
                    | 'ES2020'
                    | 'ES2021'
                    | 'ES2022'
                    | 'ES2023'
                    | 'ESNext'
                )
              | {
                    [k: string]: unknown;
                }
          ) &
              null)
    );

Set the JavaScript language version for emitted JavaScript and include compatible library declarations.

property traceResolution

traceResolution?: boolean | null;

Enable tracing of the name resolution process. Requires TypeScript version 2.0 or later.

property tsBuildInfoFile

tsBuildInfoFile?: string | null;

Specify the folder for .tsbuildinfo incremental compilation files.

property typeRoots

typeRoots?: Array<string | null> | null;

Specify multiple folders that act like ./node_modules/@types.

property types

types?: Array<string | null> | null;

Specify type package names to be included without being referenced in a source file.

property useDefineForClassFields

useDefineForClassFields?: boolean | null;

Emit ECMAScript-standard-compliant class fields.

property useUnknownInCatchVariables

useUnknownInCatchVariables?: boolean | null;

Default catch clause variables as unknown instead of any.

property verbatimModuleSyntax

verbatimModuleSyntax?: boolean | null;

Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting.

property watch

watch?: boolean | null;

Watch input files.

property watchDirectory

watchDirectory?:
    | 'useFsEvents'
    | 'fixedPollingInterval'
    | 'dynamicPriorityPolling'
    | 'fixedChunkSizePolling';

Specify the strategy for watching directories under systems that lack recursive file-watching functionality. Requires TypeScript version 3.8 or later.

property watchFile

watchFile?:
    | 'fixedPollingInterval'
    | 'priorityPollingInterval'
    | 'dynamicPriorityPolling'
    | 'useFsEvents'
    | 'useFsEventsOnParentDirectory'
    | 'fixedChunkSizePolling';

Specify the strategy for watching individual files. Requires TypeScript version 3.8 or later.

index signature

[k: string]: unknown;

interface TransformOptionsTsJest

interface TransformOptionsTsJest<TransformerConfig = unknown>
    extends TransformOptions<TransformerConfig> {}

Deprecated
use JestConfigWithTsJest instead

property config

config: Config.ProjectConfig;

interface TsCompilerInstance

interface TsCompilerInstance extends CompilerInstance {}

property configSet

configSet: ConfigSet;

property program

program: _ts.Program | undefined;

interface TsJestAstTransformer

interface TsJestAstTransformer {}

property after

after: AstTransformerDesc[];

property afterDeclarations

afterDeclarations: AstTransformerDesc[];

property before

before: AstTransformerDesc[];

interface TsJestCompileOptions

interface TsJestCompileOptions {}

property depGraphs

depGraphs: Map<string, DepGraphInfo>;

property supportsStaticESM

supportsStaticESM: boolean;

property watchMode

watchMode: boolean;

interface TsJestGlobalOptions

interface TsJestGlobalOptions {}

Deprecated
use TsJestTransformerOptions instead

property astTransformers

astTransformers?: ConfigCustomTransformer;

Custom transformers (mostly used by jest presets)

property babelConfig

babelConfig?: boolean | string | BabelConfig;

Babel config. It can be: - false (or undefined, it's the default): do NOT use babel - true: use babel using default babelrc file - path/to/.babelrc: path to a babelrc file ( can be used) - {...}: an object with inline babel options
undefined (not using Babel)

property compiler

compiler?: 'typescript' | 'ttypescript' | string;

Compiler to use
typescript

property diagnostics

diagnostics?:
    | boolean
    | {
          /**
           * Enables colorful and pretty output of errors
           *
           * @default `undefined` (enables formatting errors)
           */
          pretty?: boolean;
          /**
           * List of TypeScript diagnostic error codes to ignore
           * [here](https://github.com/Microsoft/TypeScript/blob/master/src/compiler/diagnosticMessages.json).
           *
           * @see https://github.com/Microsoft/TypeScript/blob/master/src/compiler/diagnosticMessages.json
           * @default `[6059,18002,18003]`
           */
          ignoreCodes?: number | string | Array<number | string>;
          /**
           * If specified, diagnostics of source files which path **matches** will be ignored
           */
          exclude?: string[];
          /**
           * Logs TypeScript errors to stderr instead of throwing exceptions
           *
           * @default `undefined` (TypeScript errors will be thrown as exceptions)
           */
          warnOnly?: boolean;
      };

TS diagnostics - less to be reported if isolatedModules is true. It can be: - true (or undefined, it's the default): show all diagnostics - false: hide diagnostics of all files (kind of useless) - {...}: an inline object with fine grained settings
undefined

property isolatedModules

isolatedModules?: boolean;

Deprecated
use TsConfigCompilerOptionsJson.isolatedModules instead
Compiles files as isolated modules (disables some features)
undefined (disables transpiling files with _ts.transpileModule)

property stringifyContentPathRegex

stringifyContentPathRegex?: string | RegExp;

Kept for backward compatibility to handle __TRANSFORM_HTML__ Any file which will match this regex will be transpiled as a module exporting the content of the file as a string

property tsconfig

tsconfig?: boolean | string | RawCompilerOptions | TsConfigCompilerOptionsJson;

Compiler options. It can be: - true (or undefined, it's the default): use default tsconfig file - false: do NOT use default config file - path/to/tsconfig.json: path to a specific tsconfig file ( can be used) - {...}: an object with inline compiler options
undefined (the default config file will be used if it exists)
Remarks
RawCompilerOptions will be replaced with TsConfigCompilerOptionsJson in the next major release

property useESM

useESM?: boolean;

Tell ts-jest to transform codes to ESM format. This only works in combination with jest-runtime ESM option supportsStaticESM true which is passed into Jest transformer

Type Aliases

type BabelConfig

type BabelConfig = _babel.TransformOptions;

Don't mark as internal because it is used in TsJestGlobalOptions which is an exposed type

type DefaultEsmLegacyPreset

type DefaultEsmLegacyPreset = {
    extensionsToTreatAsEsm: string[];
    transform: {
        [ESM_TS_TRANSFORM_PATTERN]: [
            'ts-jest/legacy',
            {
                useESM: true;
            } & DefaultEsmTransformOptions
        ];
    };
};

type DefaultEsmPreset

type DefaultEsmPreset = {
    extensionsToTreatAsEsm: string[];
    transform: {
        [ESM_TS_TRANSFORM_PATTERN]: [
            'ts-jest',
            {
                useESM: true;
            } & DefaultEsmTransformOptions
        ];
    };
};

type DefaultEsmTransformOptions

type DefaultEsmTransformOptions = Omit<TsJestTransformerOptions, 'useESM'>;

type DefaultLegacyPreset

type DefaultLegacyPreset = {
    transform: {
        [TS_TRANSFORM_PATTERN]: ['ts-jest/legacy', DefaultTransformOptions];
    };
};

type DefaultPreset

type DefaultPreset = {
    transform: {
        [TS_TRANSFORM_PATTERN]: ['ts-jest', DefaultTransformOptions];
    };
};

type DefaultTransformOptions

type DefaultTransformOptions = Omit<TsJestTransformerOptions, 'useESM'>;

type JsWithBabelEsmLegacyPreset

type JsWithBabelEsmLegacyPreset = {
    extensionsToTreatAsEsm: string[];
    transform: {
        [ESM_JS_TRANSFORM_PATTERN]: 'babel-jest';
        [ESM_TS_TRANSFORM_PATTERN]: [
            'ts-jest/legacy',
            {
                useESM: true;
            } & JsWithBabelEsmTransformOptions
        ];
    };
};

type JsWithBabelEsmPreset

type JsWithBabelEsmPreset = {
    extensionsToTreatAsEsm: string[];
    transform: {
        [ESM_JS_TRANSFORM_PATTERN]: 'babel-jest';
        [ESM_TS_TRANSFORM_PATTERN]: [
            'ts-jest',
            {
                useESM: true;
            } & JsWithBabelEsmTransformOptions
        ];
    };
};

type JsWithBabelEsmTransformOptions

type JsWithBabelEsmTransformOptions = Omit<TsJestTransformerOptions, 'useESM'>;

type JsWithBabelLegacyPreset

type JsWithBabelLegacyPreset = {
    transform: {
        [JS_TRANSFORM_PATTERN]: 'babel-jest';
        [TS_TRANSFORM_PATTERN]: ['ts-jest/legacy', JsWithBabelTransformerOptions];
    };
};

type JsWithBabelPreset

type JsWithBabelPreset = {
    transform: {
        [JS_TRANSFORM_PATTERN]: 'babel-jest';
        [TS_TRANSFORM_PATTERN]: ['ts-jest', JsWithBabelTransformerOptions];
    };
};

type JsWithBabelTransformerOptions

type JsWithBabelTransformerOptions = Omit<TsJestTransformerOptions, 'useESM'>;

type JsWithTsEsmLegacyPreset

type JsWithTsEsmLegacyPreset = {
    extensionsToTreatAsEsm: string[];
    transform: {
        [ESM_TS_JS_TRANSFORM_PATTERN]: [
            'ts-jest/legacy',
            {
                useESM: true;
            } & JsWithTsEsmTransformOptions
        ];
    };
};

type JsWithTsEsmPreset

type JsWithTsEsmPreset = {
    extensionsToTreatAsEsm: string[];
    transform: {
        [ESM_TS_JS_TRANSFORM_PATTERN]: [
            'ts-jest',
            {
                useESM: true;
            } & JsWithTsEsmTransformOptions
        ];
    };
};

type JsWithTsEsmTransformOptions

type JsWithTsEsmTransformOptions = Omit<TsJestTransformerOptions, 'useESM'>;

type JsWithTsLegacyPreset

type JsWithTsLegacyPreset = {
    transform: {
        [TS_JS_TRANSFORM_PATTERN]: ['ts-jest/legacy', JsWithTsTransformOptions];
    };
};

type JsWithTsPreset

type JsWithTsPreset = {
    transform: {
        [TS_JS_TRANSFORM_PATTERN]: ['ts-jest', JsWithTsTransformOptions];
    };
};

type JsWithTsTransformOptions

type JsWithTsTransformOptions = Omit<TsJestTransformerOptions, 'useESM'>;

type StringMap

type StringMap = Map<string, string>;

type TsConfigCompilerOptionsJson

type TsConfigCompilerOptionsJson = TsConfigJson.CompilerOptions;

type TsJestPresets

type TsJestPresets = Pick<
    JestConfigWithTsJest,
    'extensionsToTreatAsEsm' | 'moduleFileExtensions' | 'transform' | 'testMatch'
>;

Deprecated
use other preset types below instead

type TsJestTransformerOptions

type TsJestTransformerOptions = TsJestGlobalOptions;

type TsJestTransformOptions

type TsJestTransformOptions = TransformOptions<TsJestTransformerOptions>;

type TTypeScript

type TTypeScript = typeof _ts;

Package Files (14)

Dependencies (10)

Peer Dependencies (6)

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ts-jest

Install

Overview

Index

Variables

Functions

Classes

Interfaces

Type Aliases

Variables

variable _default

variable DECLARATION_TYPE_EXT

variable ESM_JS_TRANSFORM_PATTERN

variable ESM_TS_JS_TRANSFORM_PATTERN

variable ESM_TS_TRANSFORM_PATTERN

variable JS_EXT_TO_TREAT_AS_ESM

variable JS_JSX_EXTENSIONS

variable JS_JSX_REGEX

variable JS_TRANSFORM_PATTERN

variable LINE_FEED

variable rootLogger

variable TS_EXT_TO_TREAT_AS_ESM

variable TS_JS_TRANSFORM_PATTERN

variable TS_TRANSFORM_PATTERN

variable TS_TSX_REGEX

Functions

function createDefaultEsmLegacyPreset

function createDefaultEsmPreset

function createDefaultLegacyPreset

function createDefaultPreset

function createJestPreset

Deprecated

function createJsWithBabelEsmLegacyPreset

function createJsWithBabelEsmPreset

function createJsWithBabelLegacyPreset

function createJsWithBabelPreset

function createJsWithTsEsmLegacyPreset

function createJsWithTsEsmPreset

function createJsWithTsLegacyPreset

function createJsWithTsPreset

function parse

function pathsToModuleNameMapper

function stringify

Classes

class ConfigSet

constructor

property cacheSuffix

property compilerModule

property cwd

property isolatedModules

property logger

property parentLogger

property parsedTsConfig

property resolvedTransformers

property rootDir

property tsCacheDir

property tsJestDigest

property useESM

method isTestFile

method raiseDiagnostics

method resolvePath

method shouldReportDiagnostics

method shouldStringifyContent

class JsonableValue

constructor

property serialized

property value

method toString

method valueOf

class TsCompiler

constructor

property configSet

property program

property runtimeCacheFS

method getCompiledOutput

method getResolvedModules

class TsJestCompiler

constructor

method getCompiledOutput

method getResolvedModules