Missing-keys NPM

Find missing object keys (node and browser support)

Return missing keys if the given object hasn't all required keys.

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Install

with npm

$ npm install missing-keys --save

with bower

$ bower install missing-keys --save

Usage in node

var missingKeys = require('missing-keys');

var config = {
    name: 'missing-keys',
    description: 'Return missing keys if the given object has not all required keys.',
    version: '0.1.0',
    homepage: 'https://github.com/tobiasoberrauch/missing-keys',
    author: 'Tobias Oberrauch <tobias.oberrauch@grolba.com>'
};

missingKeys.has(config, 'name');
//-> false

missingKeys.get(config, ['name', 'bin']);
//-> ['bin']

missingKeys(config, ['bin', 'dependencies']);
//-> ['bin', 'dependencies']

var requiredKeys = ['bin', 'dependencies'];
if (missingKeys.has(config, requiredKeys)) {
  var keys = missingKeys.get(config, requiredKeys);
}

Usage in browser

<script type="text/javascript" src="./bower_components/missing-keys/index.js"></script>
<script type="text/javascript">
var config = {
    name: 'missing-keys',
    description: 'Return missing keys if the given object has not all required keys.',
    version: '0.1.0',
    homepage: 'https://github.com/tobiasoberrauch/missing-keys',
    author: 'Tobias Oberrauch <tobias.oberrauch@grolba.com>'
};

missingKeys.has(config, 'name');
//-> false

missingKeys.get(config, ['name', 'bin']);
//-> ['bin']

missingKeys(config, ['bin', 'dependencies']);
//-> ['bin', 'dependencies']

var requiredKeys = ['bin', 'dependencies'];
if (missingKeys.has(config, requiredKeys)) {
  var keys = missingKeys.get(config, requiredKeys);
}
</script>