Home

Index

How to use the pathsToModuleNameMapper function from ts-jest

Find comprehensive JavaScript ts-jest.pathsToModuleNameMapper code examples handpicked from public code repositorys.

ts-jest.pathsToModuleNameMapper creates a mapping of module paths to module names that can be used by Jest.

jest.config.js

GitHub: interledger/web-monetization-projects

13
14
15
16
17
18
19
20
21
22
23
24


const tsConfig = resolve(__dirname, 'tsconfig.json')
const { compilerOptions } = parseJSON(
  readFileSync(tsConfig, { encoding: 'utf8' })
)
const pathsToModuleNames = pathsToModuleNameMapper(compilerOptions.paths, {
  prefix: `${__dirname}/`
})


const moduleNameMapper = MAP_PATHS_TO_MODULES ? pathsToModuleNames : undefined

+ 66 other calls in file

jest.config.js

GitHub: learningeconomy/LearnCard

87
88
89
90
91
92
93
94
95
96
//   "json",
//   "node"
// ],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths),
modulePaths: ['<rootDir>'],

// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
// modulePathIgnorePatterns: [],

+ 60 other calls in file

How does ts-jest.pathsToModuleNameMapper work?

ts-jest.pathsToModuleNameMapper is a function provided by the ts-jest library that converts a TypeScript path mapping object into a Jest-compatible moduleNameMapper object, which maps import statements to corresponding module paths.

This is useful for configuring Jest to resolve TypeScript aliases in import statements. The function takes an input object that represents the path mapping configuration, and returns a moduleNameMapper object that can be used in Jest configuration. The resulting moduleNameMapper object can be passed to Jest to configure module name mappings.

jest.config.js

GitHub: dotansimha/graphql-yoga

45
46
47
48
49
50
51
52
53
54
testEnvironment: 'node',
rootDir: ROOT_DIR,
restoreMocks: true,
reporters: ['default'],
modulePathIgnorePatterns: ['dist'],
moduleNameMapper: pathsToModuleNameMapper(tsconfig.compilerOptions.paths, {
  prefix: `${ROOT_DIR}/`,
}),
collectCoverage: false,
cacheDirectory: resolve(ROOT_DIR, `${CI ? '' : 'node_modules/'}.cache/jest`),

507

+ 37 other calls in file

jest.config.js

GitHub: 1wku/ticket-system

88
89
90
91
92
93
94
95
96
  // "json",
  // "node"
],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>/' }),

// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
// modulePathIgnorePatterns: [],

+ 18 other calls in file

Ai Example

1
2
3
4
5
6
7
8
9
10
11
12
const { pathsToModuleNameMapper } = require("ts-jest/utils");

const paths = {
  "@app/*": ["src/*"],
  "@lib/*": ["lib/*"],
};

const moduleNameMapper = pathsToModuleNameMapper(paths, {
  prefix: " /",
});

console.log(moduleNameMapper);

In this example, the paths object defines two aliases: @app/* and @lib/*, both of which map to directories relative to the project root. pathsToModuleNameMapper is used to convert these aliases to a format that can be used by Jest. The resulting moduleNameMapper object will map module names like @app/foo and @lib/bar to the corresponding directories in the project.

jest.config.js

GitHub: leandrosantino/nodeSetup

83
84
85
86
87
88
89
90
91
//   "json",
//   "node"
// ],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>' }),

// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
// modulePathIgnorePatterns: [],

+ 20 other calls in file

jest.config.js

GitHub: Irelynx/integrify-node.js

92
93
94
95
96
97
98
99
100
101
//   "node"
// ],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
moduleNameMapper: 
// pathsToModuleNameMapper({
//   "@/*": ["./src/*"]
// }),
{
  // same as paths in tsconfig.json

+ 10 other calls in file

jest.config.js

GitHub: willianspraciano/gostack11-updated-2022

82
83
84
85
86
87
88
89
90
91
//   "json",
//   "node"
// ],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, {
  prefix: '<rootDir>/src/',
}),

// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader

jest.config.js

GitHub: luizandrends/loader-microservice

76
77
78
79
80
81
82
83
84
//   "tsx",
//   "node"
// ],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>/src/' }),

// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
// modulePathIgnorePatterns: [],

jest.config.js

GitHub: evertondevelop/beach-forecast

83
84
85
86
87
88
89
90
91
//   "json",
//   "node"
// ],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, {prefix: '<rootDir>'}),

// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
// modulePathIgnorePatterns: [],

jest.config.js

GitHub: kenlai93/demo-yarn-0install-libs

93
94
95
96
97
98
99
100
101
//   "node"
// ],

// A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
modulePaths: [compilerOptions.baseUrl], // <-- This will be set to 'baseUrl' value
moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths , { prefix: '<rootDir>/' } ),

// An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
// modulePathIgnorePatterns: [],

+ 53 other calls in file

Other functions in ts-jest

Sorted by popularity

ts-jest.pathsToModuleNameMapper is the most popular function in ts-jest (436 examples)

Other popular packages:

Home

About