Package Exports

babel-plugin-unassert

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (babel-plugin-unassert) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

babel-plugin-unassert

Babel plugin to remove assertions on build. Encourages Design by Contract (DbC).

INSTALL

$ npm install --save-dev babel-plugin-unassert

HOW TO USE

via Babel CLI

$ $(npm bin)/babel --plugins babel-plugin-unassert /path/to/src/target.js > /path/to/build/target.js

or shortly,

$ $(npm bin)/babel --plugins unassert /path/to/src/target.js > /path/to/build/target.js

via Babel API

var babel = require('babel-core');
var jsCode = fs.readFileSync('/path/to/src/target.js');
var transformed = babel.transform(jsCode, {
    plugins: ['babel-plugin-unassert']
});
console.log(transformed.code);

EXAMPLE

For given math.js below,

'use strict';

function add (a, b) {
    console.assert(typeof a === 'number');
    assert(!isNaN(a));
    assert.equal(typeof b, 'number');
    assert.ok(!isNaN(b));
    return a + b;
}

Run babel with --plugins unassert to transform tests.

$ $(npm bin)/babel --plugins unassert /path/to/demo/math.js > /path/to/build/math.js

You will see assert calls disappear.

'use strict';

function add(a, b) {
    return a + b;
}

AUTHOR

Takuto Wada

LICENSE

Licensed under the MIT license.