first commit

.gitignore

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+# Logs
+logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+.coveralls.yml
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directory
+# Commenting this out is preferred by some people, see
+# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git-
+node_modules
+
+# Users Environment Variables
+.lock-wscript

.travis.yml

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+language: node_js
+node_js:
+  - 'iojs'
+  - '0.10'
+  - '0.12'
+before_install:
+  - npm i -g gulp
+after_success:
+  - gulp coveralls

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015 Javier Cejudo
+
+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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+# oxr-to-linear-presets
+
+[![Build Status](https://travis-ci.org/javiercejudo/oxr-to-linear-presets.svg)](https://travis-ci.org/javiercejudo/oxr-to-linear-presets)
+[![Coverage Status](https://coveralls.io/repos/javiercejudo/oxr-to-linear-presets/badge.svg?branch=master)](https://coveralls.io/r/javiercejudo/oxr-to-linear-presets?branch=master)
+[![Code Climate](https://codeclimate.com/github/javiercejudo/oxr-to-linear-presets/badges/gpa.svg)](https://codeclimate.com/github/javiercejudo/oxr-to-linear-presets)
+
+Transform [open exchange rates API response](https://openexchangerates.org/documentation#preview-api-response) to [linear presets](https://github.com/javiercejudo/linear-presets) format.
+
+## Install
+
+    npm i oxr-to-linear-presets
+
+## Usage
+
+See [tested example](test/example.js).
+
+### Node.js
+
+```js
+var oxrTransform = require('oxr-to-linear-presets');
+var oxr = require('open-exchange-rates');
+
+oxr.set({ app_id: 'YOUR_APP_ID' });
+
+oxr.latest(function() {
+  console.log(oxrTransform(oxr.rates, oxr.base));
+});
+```
+
+### jQuery
+
+```js
+// browserified or similar
+var oxrTransform = require('oxr-to-linear-presets');
+
+$.ajax({
+  url: 'https://openexchangerates.org/api/latest.json?app_id=YOUR_APP_ID',
+  dataType: 'jsonp',
+  success: function(json) {
+    console.log(oxrTransform(json.rates, json.base));
+  }
+});
+```

fixtures/response.json

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+{
+  "disclaimer": "Exchange rates are provided for informational purposes only, and do not constitute financial advice of any kind. Although every attempt is made to ensure quality, NO guarantees are given whatsoever of accuracy, validity, availability, or fitness for any purpose - please use at your own risk. All usage is subject to your acceptance of the Terms and Conditions of Service, available at: https://openexchangerates.org/terms/",
+  "license": "Data sourced from various providers with public-facing APIs; copyright may apply; resale is prohibited; no warranties given of any kind. Bitcoin data provided by http://coindesk.com. All usage is subject to your acceptance of the License Agreement available at: https://openexchangerates.org/license/",
+  "timestamp": 1445605209,
+  "base": "USD",
+  "rates": {
+    "AUD": 1.379632,
+    "EUR": 0.90489,
+    "USD": 1
+  }
+}

fixtures/transformed.json

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+{
+  "base": "USD",
+  "conversions": {
+    "AUD": [[0, 1], [0, 1.379632]],
+    "EUR": [[0, 1], [0, 0.90489]],
+    "USD": [[0, 1], [0, 1]]
+  }
+}

gulpfile.js

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+var gulp = require('gulp');
+var mocha = require('gulp-mocha');
+var istanbul = require('gulp-istanbul');
+var rimraf = require('rimraf');
+var coveralls = require('gulp-coveralls');
+
+gulp.task('clean', function (cb) {
+  rimraf('./coverage', cb);
+});
+
+gulp.task('instrument', function () {
+  return gulp.src(['src/*.js'])
+    .pipe(istanbul())
+    .pipe(istanbul.hookRequire());
+});
+
+gulp.task('test', ['clean', 'instrument'], function () {
+  return gulp.src(['test/*.js'])
+    .pipe(mocha())
+    .pipe(istanbul.writeReports());
+});
+
+gulp.task('coveralls', function () {
+  gulp.src('coverage/lcov.info')
+    .pipe(coveralls());
+});
+
+gulp.task('default', ['test']);

package.json

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+{
+  "name": "oxr-to-linear-presets",
+  "version": "0.0.0",
+  "description": "Transform open exchange rates API response to linear presets format.",
+  "main": "src/oxr-to-linear-presets.js",
+  "scripts": {
+    "test": "gulp test"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/javiercejudo/oxr-to-linear-presets"
+  },
+  "keywords": [
+    "all",
+    "array",
+    "every"
+  ],
+  "author": "Javier Cejudo",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/javiercejudo/oxr-to-linear-presets/issues"
+  },
+  "homepage": "https://github.com/javiercejudo/oxr-to-linear-presets",
+  "devDependencies": {
+    "arbitrary-precision": "^1.1.1",
+    "floating-adapter": "^1.2.0",
+    "gulp": "3.9.0",
+    "gulp-coveralls": "0.1.4",
+    "gulp-istanbul": "0.10.2",
+    "gulp-mocha": "2.1.3",
+    "linear-converter": "^7.0.2",
+    "linear-preset-any-to-any": "^3.0.2",
+    "rimraf": "2.4.3",
+    "should": "7.1.1"
+  }
+}

src/oxr-to-linear-presets.js

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+/* jshint node:true */
+
+'use strict';
+
+module.exports = function transform(rates, base) {
+  return {
+    base: base,
+    conversions: singlesToPreset(rates)
+  };
+};
+
+function singlesToPreset(singles) {
+  return Object.keys(singles).reduce(function(result, key) {
+    result[key] = [[0, 1], [0, singles[key]]];
+
+    return result;
+  }, {});
+}

test/example.js

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+/*jshint node:true, mocha:true */
+
+'use strict';
+
+require('should');
+
+var response = require('../fixtures/response.json');
+var oxrTransform = require('../src/oxr-to-linear-presets');
+
+var Decimal = require('arbitrary-precision')(require('floating-adapter'));
+var anyToAny = require('linear-preset-any-to-any')(Decimal);
+var convert = require('linear-converter')(Decimal).convert;
+
+describe('oxr-to-linear-presets example', function() {
+  it('should allow conversions from any to any', function() {
+    var presets = oxrTransform(response.rates, response.base);
+    var EUR_AUD = anyToAny(presets.conversions, 'EUR', 'AUD');
+
+    convert(EUR_AUD, 1).valueOf().toFixed(2).should.be.exactly('1.52');
+  });
+});

test/spec.js

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+/*jshint node:true, mocha:true */
+
+'use strict';
+
+require('should');
+
+var response = require('../fixtures/response.json');
+var transformed = require('../fixtures/transformed.json');
+var oxrTransform = require('../src/oxr-to-linear-presets');
+
+describe('oxr-to-linear-presets', function() {
+  it('should transform open exchange rates API response to linear presets format', function() {
+    oxrTransform(response.rates, response.base).should.eql(transformed);
+  });
+});