🐛 Update: Added support for the 'find' command in settings.local.json. Enhanced logging for various modules, including initialization and performance metrics. Improved SQLite database optimization and ensured better tracking of user interactions and system processes. 📚
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network-visualization/node_modules/has-value/README.md
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# has-value [](https://www.npmjs.com/package/has-value) [](https://npmjs.org/package/has-value) [](https://npmjs.org/package/has-value) [](https://travis-ci.org/jonschlinkert/has-value)
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> Returns true if a value exists, false if empty. Works with deeply nested values using object paths.
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## Install
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Install with [npm](https://www.npmjs.com/):
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```sh
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$ npm install --save has-value
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```
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**Works for:**
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* booleans
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* functions
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* numbers
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* strings
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* nulls
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* object
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* arrays
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## Usage
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Works with property values (supports object-path notation, like `foo.bar`) or a single value:
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```js
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var hasValue = require('has-value');
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hasValue('foo');
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hasValue({foo: 'bar'}, 'foo');
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hasValue({a: {b: {c: 'foo'}}}, 'a.b.c');
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//=> true
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hasValue('');
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hasValue({foo: ''}, 'foo');
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//=> false
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hasValue(0);
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hasValue(1);
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hasValue({foo: 0}, 'foo');
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hasValue({foo: 1}, 'foo');
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hasValue({foo: null}, 'foo');
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hasValue({foo: {bar: 'a'}}}, 'foo');
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hasValue({foo: {bar: 'a'}}}, 'foo.bar');
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//=> true
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hasValue({foo: {}}}, 'foo');
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hasValue({foo: {bar: {}}}}, 'foo.bar');
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hasValue({foo: undefined}, 'foo');
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//=> false
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hasValue([]);
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hasValue([[]]);
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hasValue([[], []]);
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hasValue([undefined]);
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hasValue({foo: []}, 'foo');
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//=> false
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hasValue([0]);
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hasValue([null]);
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hasValue(['foo']);
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hasValue({foo: ['a']}, 'foo');
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//=> true
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hasValue(function() {})
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hasValue(function(foo) {})
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hasValue({foo: function(foo) {}}, 'foo');
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hasValue({foo: function() {}}, 'foo');
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//=> true
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hasValue(true);
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hasValue(false);
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hasValue({foo: true}, 'foo');
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hasValue({foo: false}, 'foo');
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//=> true
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```
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## isEmpty
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To do the opposite and test for empty values, do:
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```js
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function isEmpty(o) {
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return !hasValue.apply(hasValue, arguments);
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}
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```
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## Release history
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### v1.0.0
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* `zero` always returns true
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* `array` now recurses, so that an array of empty arrays will return `false`
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* `null` now returns true
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## About
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### Related projects
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* [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.")
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* [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.")
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* [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.")
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* [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.")
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### Contributing
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Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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### Contributors
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| **Commits** | **Contributor** |
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| --- | --- |
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| 17 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 2 | [rmharrison](https://github.com/rmharrison) |
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### Building docs
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_(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.)_
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To generate the readme, run the following command:
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```sh
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$ npm install -g verbose/verb#dev verb-generate-readme && verb
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```
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### Running tests
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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:
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```sh
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$ npm install && npm test
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```
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### Author
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**Jon Schlinkert**
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* [github/jonschlinkert](https://github.com/jonschlinkert)
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* [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
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### License
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Copyright © 2017, [Jon Schlinkert](https://github.com/jonschlinkert).
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Released under the [MIT License](LICENSE).
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***
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_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on May 19, 2017._
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