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network-visualization/node_modules/has-value/README.md

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+# has-value [![NPM version](https://img.shields.io/npm/v/has-value.svg?style=flat)](https://www.npmjs.com/package/has-value) [![NPM monthly downloads](https://img.shields.io/npm/dm/has-value.svg?style=flat)](https://npmjs.org/package/has-value) [![NPM total downloads](https://img.shields.io/npm/dt/has-value.svg?style=flat)](https://npmjs.org/package/has-value) [![Linux Build Status](https://img.shields.io/travis/jonschlinkert/has-value.svg?style=flat&label=Travis)](https://travis-ci.org/jonschlinkert/has-value)
+
+> Returns true if a value exists, false if empty. Works with deeply nested values using object paths.
+
+## Install
+
+Install with [npm](https://www.npmjs.com/):
+
+```sh
+$ npm install --save has-value
+```
+
+**Works for:**
+
+* booleans
+* functions
+* numbers
+* strings
+* nulls
+* object
+* arrays
+
+## Usage
+
+Works with property values (supports object-path notation, like `foo.bar`) or a single value:
+
+```js
+var hasValue = require('has-value');
+
+hasValue('foo');
+hasValue({foo: 'bar'}, 'foo');
+hasValue({a: {b: {c: 'foo'}}}, 'a.b.c');
+//=> true
+
+hasValue('');
+hasValue({foo: ''}, 'foo');
+//=> false
+
+hasValue(0);
+hasValue(1);
+hasValue({foo: 0}, 'foo');
+hasValue({foo: 1}, 'foo');
+hasValue({foo: null}, 'foo');
+hasValue({foo: {bar: 'a'}}}, 'foo');
+hasValue({foo: {bar: 'a'}}}, 'foo.bar');
+//=> true
+
+hasValue({foo: {}}}, 'foo');
+hasValue({foo: {bar: {}}}}, 'foo.bar');
+hasValue({foo: undefined}, 'foo');
+//=> false
+
+hasValue([]);
+hasValue([[]]);
+hasValue([[], []]);
+hasValue([undefined]);
+hasValue({foo: []}, 'foo');
+//=> false
+
+hasValue([0]);
+hasValue([null]);
+hasValue(['foo']);
+hasValue({foo: ['a']}, 'foo');
+//=> true
+
+hasValue(function() {})
+hasValue(function(foo) {})
+hasValue({foo: function(foo) {}}, 'foo'); 
+hasValue({foo: function() {}}, 'foo');
+//=> true
+
+hasValue(true);
+hasValue(false);
+hasValue({foo: true}, 'foo');
+hasValue({foo: false}, 'foo');
+//=> true
+```
+
+## isEmpty
+
+To do the opposite and test for empty values, do:
+
+```js
+function isEmpty(o) {
+  return !hasValue.apply(hasValue, arguments);
+}
+```
+
+## Release history
+
+### v1.0.0
+
+* `zero` always returns true
+* `array` now recurses, so that an array of empty arrays will return `false`
+* `null` now returns true
+
+## About
+
+### Related projects
+
+* [define-property](https://www.npmjs.com/package/define-property): Define a non-enumerable property on an object. | [homepage](https://github.com/jonschlinkert/define-property "Define a non-enumerable property on an object.")
+* [get-value](https://www.npmjs.com/package/get-value): Use property paths (`a.b.c`) to get a nested value from an object. | [homepage](https://github.com/jonschlinkert/get-value "Use property paths (`a.b.c`) to get a nested value from an object.")
+* [set-value](https://www.npmjs.com/package/set-value): Create nested values and any intermediaries using dot notation (`'a.b.c'`) paths. | [homepage](https://github.com/jonschlinkert/set-value "Create nested values and any intermediaries using dot notation (`'a.b.c'`) paths.")
+* [unset-value](https://www.npmjs.com/package/unset-value): Delete nested properties from an object using dot notation. | [homepage](https://github.com/jonschlinkert/unset-value "Delete nested properties from an object using dot notation.")
+
+### Contributing
+
+Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
+
+### Contributors
+
+| **Commits** | **Contributor** | 
+| --- | --- |
+| 17 | [jonschlinkert](https://github.com/jonschlinkert) |
+| 2 | [rmharrison](https://github.com/rmharrison) |
+
+### Building docs
+
+_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
+
+To generate the readme, run the following command:
+
+```sh
+$ npm install -g verbose/verb#dev verb-generate-readme && verb
+```
+
+### Running tests
+
+Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
+
+```sh
+$ npm install && npm test
+```
+
+### Author
+
+**Jon Schlinkert**
+
+* [github/jonschlinkert](https://github.com/jonschlinkert)
+* [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
+
+### License
+
+Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
+Released under the [MIT License](LICENSE).
+
+***
+
+_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on May 19, 2017._