JS Assert

What it does?

To add check on debug mode only (similar to java "assert" keyword) and being removed on production mode

How to use it?

By Webpack:

Add webpack-assert-loader as the first loader of js, with "dev" query param specified.

An example to config webpack:

var webpackConfig = {
    /* ... other webpack config ...*/
    module: {
        loaders: {[
            test: /\.js$/,
            loader: 'js-assert/webpack-assert-loader?dev=' + (isDev ? 'true' : 'false')
        ]}
    }
};

It's achieved by replacing __assert__ call to add dev check in webpack-assert-loader, so webpack will strip __assert__ call on production mode.

By UglifyJs Tool:

Set compress.pure_func to include __assert__ on production building.

It's achieved by manually specifying the __assert__ call doesn't affect anything. So it'll be stripped out (if it's returned result is not saved to some local variable...).

Changes Log

2.0.3

• Use a single webpack loader to strip __assert__ call on production mode, instead of cooperated with another webpack plugin

1.0.3