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Gathering detailed insights and metrics for @alex_neo/jest-expect-message

@alex_neo/jest-expect-message - 1.0.5 | npmpackage.info

@alex_neo/jest-expect-message

Add custom message to Jest expects 🃏🗯

1.0.5

368

MIT

JavaScript

24.44 kB

2.9

Installations

npm install @alex_neo/jest-expect-message

Developer Guide

BETA

Typescript

No

Module System

CommonJS

Node Version

14.16.0

NPM Version

6.14.11 Score

98.1

Supply Chain

100

Quality

75.3

Maintenance

100

Vulnerability

100

License

Pull Requests

Open

8

Total

53

Closed

37

Merged

8

Issues

Open

5

Total

20

Closed

15

Releases

v1.0.0

Updated on Aug 07, 2018

View All 1 releases

Languages

JavaScript

JavaScript (100%)

Developer

mattphillips

Download Statistics

Total Downloads

Last Day

Last Week

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GitHub Statistics

MIT License

368 Stars

45 Commits

41 Forks

7 Watchers

3 Branches

7 Contributors

Updated on Jun 25, 2025

Maintainers

View All 7 Contributors

Package Meta Information

Latest Version

1.0.5

Package Id

@alex_neo/jest-expect-message@1.0.5

Unpacked Size

24.44 kB

Size

7.92 kB

File Count

NPM Version

6.14.11

Node Version

14.16.0

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

NaN

Compared to previous day

Last Week

NaN

Compared to previous week

Last Month

NaN

Compared to previous month

Last Year

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

all-contributors-cli babel-cli babel-core babel-eslint babel-plugin-transform-es2015-modules-commonjs babel-plugin-transform-object-rest-spread codecov eslint eslint-plugin-import eslint-plugin-jest husky jest jest-extended lint-staged prettier

jest-expect-message

🃏🗯

Add custom message to Jest expects

Problem

In many testing libraries it is possible to supply a custom message for a given expectation, this is currently not possible in Jest.

For example:

1test('returns 2 when adding 1 and 1', () => {
2  expect(1 + 1, 'Woah this should be 2!').toBe(3);
3});

This will throw the following error in Jest:

1Expect takes at most one argument.

Solution

jest-expect-message allows you to call expect with a second argument of a String message.

For example the same test as above:

1test('returns 2 when adding 1 and 1', () => {
2  expect(1 + 1, 'Woah this should be 2!').toBe(3);
3});

With jest-expect-message this will fail with your custom error message:

1  ● returns 2 when adding 1 and 1
2
3    Custom message:
4      Woah this should be 2!
5
6    expect(received).toBe(expected) // Object.is equality
7
8    Expected: 3
9    Received: 2

Installation

With npm:

1npm install --save-dev jest-expect-message

With yarn:

1yarn add -D jest-expect-message

Setup

Add jest-expect-message to your Jest setupFilesAfterEnv configuration. See for help

Jest v24+

1"jest": {
2  "setupFilesAfterEnv": ["jest-expect-message"]
3}

Jest v23-

1"jest": {
2  "setupTestFrameworkScriptFile": "jest-expect-message"
3}

Usage

expect(actual, message)
- actual: The value you would normally pass into an expect to assert against with a given matcher.
- message: String, the custom message you want to be printed should the expect fail.

1test('returns 2 when adding 1 and 1', () => {
2  expect(1 + 1, 'Woah this should be 2!').toBe(3);
3});

Contributors

_{Matt Phillips} 💻 📖 💡 🤔 🚇 ⚠️ 🔧	_{Alex Neo} 💻

LICENSE

MIT

No vulnerabilities found.

10

Binary-Artifacts

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10

Dangerous-Workflow

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10

License

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2

Code-Review

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2

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

0

Token-Permissions

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0

Maintained

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0

CII-Best-Practices

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0

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

0

SAST

Determines if the project uses static code analysis.

Score

2.9

/10

Last Scanned on 2025-07-07

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