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assert

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assert

The assert module from Node.js, for the browser.

    2.0.0latest

Version published
Maintainers
41
Weekly downloads
12,681,700
increased by1.27%

Weekly downloads

Changelog

Source

2.0.0

  • Sync with Node.js master. (@lukechilds in #44)

Note: Support for IE9 and IE10 has been dropped. IE11 is still supported.

Readme

Source

assert

The assert module from Node.js, for the browser.

Build Status npm npm

With browserify, simply require('assert') or use the assert global and you will get this module.

The goal is to provide an API that is as functionally identical to the Node.js assert API as possible. Read the official docs for API documentation.

Install

To use this module directly (without browserify), install it as a dependency:

npm install assert

Usage

The goal is to provide an API that is as functionally identical to the Node.js assert API as possible. Read the official docs for API documentation.

Inconsistencies with Node.js assert

Due to differences between browsers, some error properties such as message and stack will be inconsistent. However the assertion behaviour is as close as possible to Node.js and the same error code will always be used.

Contributing

To contribute, work on the source files. Then build and run the tests against the built files. Be careful to not introduce syntax that will be transpiled down to unsupported syntax. For example, for...of loops will be transpiled to use Symbol.iterator which is unavailable in IE.

Build scripts

npm run build

Builds the project into the build dir.

npm run dev

Watches source files for changes and rebuilds them into the build dir.

npm run test

Builds the source files into the build dir and then runs the tests against the built project.

npm run test:nobuild

Runs the tests against the built project without rebuilding first.

This is useful if you're debugging in the transpiled code and want to re-run the tests without overwriting any changes you may have made.

npm run test:source

Runs the tests against the unbuilt source files.

This will only work on modern Node.js versions.

npm run test:browsers

Run browser tests against the all targets in the cloud.

Requires airtap credentials to be configured on your machine.

npm run test:browsers:local

Run a local browser test server. No airtap configuration required.

When paired with npm run dev any changes you make to the source files will be automatically transpiled and served on the next request to the test server.

License

MIT © Joyent, Inc. and other Node contributors

Keywords

FAQs

What is assert?

The assert module from Node.js, for the browser.

Is assert popular?

The npm package assert receives a total of 11,029,764 weekly downloads. As such, assert popularity was classified as popular.

Is assert well maintained?

We found that assert demonstrated a not healthy version release cadence and project activity because the last version was released a year ago.It has 41 open source maintainers collaborating on the project.

Last updated on 12 May 2019

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