initial commit

.editorconfig

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+root = true
+
+[*.cr]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true

.gitignore

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+/docs/
+/lib/
+/bin/
+/.shards/
+*.dwarf
+
+# Libraries don't need dependency lock
+# Dependencies will be locked in applications that use them
+/shard.lock

.travis.yml

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+language: crystal
+
+crystal:
+  - latest
+  - nightly
+
+script:
+  - crystal spec
+  - crystal tool format --check
+  - bin/ameba

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2020 Anton Maminov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# geojson_area
+
+TODO: Write a description here
+
+## Installation
+
+1. Add the dependency to your `shard.yml`:
+
+   ```yaml
+   dependencies:
+     geojson_area:
+       github: your-github-user/geojson_area
+   ```
+
+2. Run `shards install`
+
+## Usage
+
+```crystal
+require "geojson_area"
+```
+
+TODO: Write usage instructions here
+
+## Development
+
+TODO: Write development instructions here
+
+## Contributing
+
+1. Fork it (<https://github.com/your-github-user/geojson_area/fork>)
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create a new Pull Request
+
+## Contributors
+
+- [Anton Maminov](https://github.com/your-github-user) - creator and maintainer

shard.yml

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+name: geojson_area
+version: 0.1.0
+
+authors:
+  - Anton Maminov <[email protected]>
+
+crystal: 0.33.0
+
+dependencies:
+  geojson:
+    github: geocrystal/geojson
+
+development_dependencies:
+  ameba:
+    github: crystal-ameba/ameba
+
+license: MIT

spec/fixtures/all.json

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+{
+  "type": "Polygon",
+  "coordinates": [[
+      [-180, -90],
+      [-180, 90],
+      [180, 90],
+      [180, -90],
+      [-180, -90]
+    ]
+  ]
+}