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istanbul-react

1.1.0
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  • License MIT

Instrumenter for 1:1 mapping of React JSX components

Package Exports

  • istanbul-react

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 (istanbul-react) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

istanbul-react Build Status Dependency Status

Instrumenter for 1:1 mapping of React JSX components, can be used with karma-coverage

Install

$ npm install --save-dev istanbul-react

Usage

Use with karma-coverage

coverageReporter: {
  instrumenters: { 'istanbul-react' : require('istanbul-react') }
  instrumenter: {
    '**/*.jsx': 'istanbul-react'
  },
  // ...
}

You can also just use it directly

var instrumenter = new require('istanbul-react').Instrumenter({});

instrumenter.instrument(content, path, function(err, instrumentedCode) {
  // ...
});

Options

You can use modifyCodeBeforeInstrumentation to modify code before instrumentation. It might be useful for example to get around chrome bug with 'use strict';. It takes one argument, which give you an object, with two properties code - original code, filename - name of the file. This callback must return modified code as a string. In the example below you can see how 'use strict'; is prefixed with semi-colon to work around bug (or feature?) in chrome.

coverageReporter: {
  instrumenters: { 'istanbul-react' : require('istanbul-react') }
  instrumenter: {
    '**/*.jsx': 'istanbul-react'
  },
  instrumenterOptions: {
    'istanbul-react': {
      modifyCodeBeforeInstrumentation: function fixChromeBugWithUseStrict(params) {
        return params.code.replace(/(['"]use strict['"];)/g, ';$1');
      }
    }
  },
  // ...
}

Tests

$ npm test

License

MIT © Podio