Initial commit

.babelrc

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+{
+  "presets": [
+    [
+      "env",
+      {
+        "targets": {
+          "node": "8"
+        }
+      }
+    ],
+    "stage-2"
+  ],
+  "plugins": ["transform-flow-strip-types"]
+}

.eslintignore

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+node_modules
+coverage
+dist

.eslintrc

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+{
+  "extends": "react-app",
+  "rules": {
+    "jsx-a11y/href-no-hash": 0
+  }
+}

.flowconfig

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+[ignore]
+dist/.*
+
+[include]
+
+[libs]
+
+[options]
+esproposal.decorators=ignore
+unsafe.enable_getters_and_setters=true

.github/CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of
+experience, nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, or to ban temporarily or permanently any
+contributor for other behaviors that they deem inappropriate, threatening,
+offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at [email protected]. The project
+team will review and investigate all complaints, and will respond in a way that
+it deems appropriate to the circumstances. The project team is obligated to
+maintain confidentiality with regard to the reporter of an incident. Further
+details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/

.github/CONTRIBUTING.md

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+# Contributing
+
+Thanks for your interest in contributing to 🏁 Final Form Calculate! Please take
+a moment to review this document **before submitting a pull request**.
+
+We are open to, and grateful for, any contributions made by the community.
+
+## Reporting issues and asking questions
+
+Before opening an issue, please search the
+[issue tracker](https://github.com/final-form/final-form-calculate/issues) to
+make sure your issue hasn’t already been reported.
+
+**We use the issue tracker to keep track of bugs and improvements** to 🏁 Final
+Form Calculate itself, its examples, and the documentation. We encourage you to
+open issues to discuss improvements, architecture, internal implementation, etc.
+If a topic has been discussed before, we will ask you to join the previous
+discussion.
+
+For support or usage questions, please search and ask on
+[StackOverflow with a `final-form-calculate` tag](https://stackoverflow.com/questions/tagged/final-form-calculate).
+We ask you to do this because StackOverflow has a much better job at keeping
+popular questions visible. Unfortunately good answers get lost and outdated on
+GitHub.
+
+**If you already asked at StackOverflow and still got no answers, post an issue
+with the question link, so we can either answer it or evolve into a bug/feature
+request.**
+
+## Sending a pull request
+
+**Please ask first before starting work on any significant new features.**
+
+It's never a fun experience to have your pull request declined after investing a
+lot of time and effort into a new feature. To avoid this from happening, we
+request that contributors create
+[an issue](https://github.com/final-form/final-form-calculate/issues) to first
+discuss any significant new features.
+
+Please try to keep your pull request focused in scope and avoid including
+unrelated commits.
+
+After you have submitted your pull request, we’ll try to get back to you as soon
+as possible. We may suggest some changes or improvements.
+
+Please format the code before submitting your pull request by running:
+
+```
+npm run precommit
+```
+
+## Coding standards
+
+Our code formatting rules are defined in
+[.eslintrc](https://github.com/final-form/final-form-calculate/blob/master/.eslintrc).
+You can check your code against these standards by running:
+
+```sh
+npm start lint
+```
+
+To automatically fix any style violations in your code, you can run:
+
+```sh
+npm run precommit
+```
+
+## Running tests
+
+You can run the test suite using the following commands:
+
+```sh
+npm test
+```
+
+Please ensure that the tests are passing when submitting a pull request. If
+you're adding new features to 🏁 Final Form Calculate, please include tests.

.github/ISSUE_TEMPLATE.md

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+<!--
+
+👋 Hey, thanks for taking an interest in 🏁 Final Form Calculate!
+
+-->
+
+### Are you submitting a **bug report** or a **feature request**?
+
+<!-- For support request, please use Stack Overflow instead. This issue tracker is reserved for bugs and features. -->
+
+### What is the current behavior?
+
+<!-- If this is a bug, please include steps to reproduce and a minimal demo of the problem using Sandbox, Plunkr, WebpackBin or JSFiddle. -->
+
+### What is the expected behavior?
+
+### Sandbox Link
+
+<!-- Problems are much easier to understand and debug if they can be demonstrated in a minimal environment.  -->
+
+### What's your environment?
+
+<!-- Include 🏁 Final Form Calculate version, 🏁 Final Form version, OS/browser affected, Node version, etc. -->
+
+### Other information
+
+<!-- Include here any detailed explanation, stacktraces, related issues, links for Stack Overflow, Twitter, etc. -->

.github/PULL_REQUEST_TEMPLATE.md

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+<!--
+
+👋 Hey, thanks for your interest in contributing to 🏁 Final Form Calculate!
+
+**Please ask first before starting work on any significant new features.**
+
+It's never a fun experience to have your pull request declined after investing a
+lot of time and effort into a new feature. To avoid this from happening, we
+request that contributors create an issue to first discuss any significant new
+features.
+
+Please try to keep your pull request focused in scope and avoid including
+unrelated commits.
+
+After you have submitted your pull request, we’ll try to get back to you as soon
+as possible. We may suggest some changes or improvements.
+
+Please format the code before submitting your pull request by running:
+
+```
+npm run precommit
+```
+
+https://github.com/final-form/final-form-calculate/blob/master/.github/CONTRIBUTING.md
+
+-->

.gitignore

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+.vscode
+*.iml
+.nyc_output
+coverage
+flow-coverage
+node_modules
+dist
+lib
+es
+npm-debug.log
+.DS_Store

.prettierrc

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+semi: false
+singleQuote: true
+trailingComma: none

.travis.yml

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+sudo: false
+language: node_js
+cache:
+  directories:
+    - node_modules
+notifications:
+  email: false
+node_js:
+  - '8'
+script:
+  - npm start validate
+after_success:
+  - npx codecov
+  - npm install --global semantic-release
+  # - semantic-release pre && npm publish && semantic-release post
+branches:
+  only:
+    - master

LICENSE

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+MIT License
+
+Copyright (c) 2017 Erik Rasmussen
+
+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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+# 🏁 Final Form Calculate
+
+[![NPM Version](https://img.shields.io/npm/v/final-form-calculate.svg?style=flat)](https://www.npmjs.com/package/final-form-calculate)
+[![NPM Downloads](https://img.shields.io/npm/dm/final-form-calculate.svg?style=flat)](https://www.npmjs.com/package/final-form-calculate)
+[![Build Status](https://travis-ci.org/final-form/final-form-calculate.svg?branch=master)](https://travis-ci.org/final-form/final-form-calculate)
+[![codecov.io](https://codecov.io/gh/final-form/final-form-calculate/branch/master/graph/badge.svg)](https://codecov.io/gh/final-form/final-form-calculate)
+[![styled with prettier](https://img.shields.io/badge/styled_with-prettier-ff69b4.svg)](https://github.com/prettier/prettier)
+
+Decorator for [🏁 Final Form](https://github.com/final-form/final-form) that
+allows you to define calculations that happen between fields, i.e. "When field X
+changes, update field Y."
+
+---
+
+## Installation
+
+```bash
+npm install --save final-form-calculate
+```
+
+or
+
+```bash
+yarn add final-form-calculate
+```
+
+## Usage
+
+```js
+import { createForm } from 'final-form'
+import createDecorator from 'final-form-calculate'
+
+// Create Form
+const form = createForm({ onSubmit })
+
+// Create Decorator
+const decorator = createDecorator(
+  // Calculations:
+  {
+    field: 'foo', // when the value of foo changes...
+    updates: [
+      {
+        // ...set field "doubleFoo" to twice the value of foo
+        doubleFoo: (fooValue, allValues) => fooValue * 2
+      }
+    ]
+  },
+  {
+    field: /items\[\d+\]/, // when a field matching this pattern changes...
+    updates: {
+      // ...sets field "total" to the sum of all items
+      total: (itemValue, allValues) =>
+        (allValues.items || []).reduce((sum, value) => sum + value, 0)
+    }
+  }
+)
+
+// Decorate form
+const undecorate = decorator(form)
+
+// Use form as normal
+```
+
+## API
+
+### `createDecorator
+
+### `form.mutators.setFieldData(name: string, values: Object) => void`
+
+Merges the values provided into the `data` value for the specified field