add fromArray function to object

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@mightyplow/jslib",
-  "version": "0.9.1",
+  "version": "0.9.8",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -203,7 +203,6 @@
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       "integrity": "sha1-7Oaqzdx25Bw0YfiL/Fdb0Nqi340=",
-      "dev": true,
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@@ -215,7 +214,6 @@
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       "integrity": "sha1-pfVtq0GiX5fstJjH66ypgZ+Vvl8=",
-      "dev": true,
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@@ -269,7 +267,6 @@
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@@ -279,7 +276,6 @@
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-      "dev": true,
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@@ -289,7 +285,6 @@
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       "integrity": "sha1-MlxZ+QL4LyS3T6zu0DY5VPZJXnI=",
-      "dev": true,
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@@ -312,7 +307,6 @@
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       "integrity": "sha1-v22/5Dk40XNpohPKiov3S2qQqxo=",
-      "dev": true,
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@@ -344,7 +338,6 @@
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       "integrity": "sha1-NRV7EBQm/S/9PaP3XH0ekYNbv4o=",
-      "dev": true,
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@@ -436,7 +429,6 @@
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       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-arrow-functions/-/babel-plugin-transform-es2015-arrow-functions-6.22.0.tgz",
       "integrity": "sha1-RSaSy3EdX3ncf4XkQM5BufJE0iE=",
-      "dev": true,
       "requires": {
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       }
@@ -445,7 +437,6 @@
       "version": "6.22.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-block-scoped-functions/-/babel-plugin-transform-es2015-block-scoped-functions-6.22.0.tgz",
       "integrity": "sha1-u8UbSflk1wy42OC5ToICRs46YUE=",
-      "dev": true,
       "requires": {
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       }
@@ -454,7 +445,6 @@
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-block-scoping/-/babel-plugin-transform-es2015-block-scoping-6.26.0.tgz",
       "integrity": "sha1-1w9SmcEwjQXBL0Y4E7CgnnOxiV8=",
-      "dev": true,
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         "babel-template": "6.26.0",
@@ -467,7 +457,6 @@
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       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-classes/-/babel-plugin-transform-es2015-classes-6.24.1.tgz",
       "integrity": "sha1-WkxYpQyclGHlZLSyo7+ryXolhNs=",
-      "dev": true,
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@@ -484,7 +473,6 @@
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-      "dev": true,
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         "babel-template": "6.26.0"
@@ -494,7 +482,6 @@
       "version": "6.23.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-destructuring/-/babel-plugin-transform-es2015-destructuring-6.23.0.tgz",
       "integrity": "sha1-mXux8auWf2gtKwh2/jWNYOdlxW0=",
-      "dev": true,
       "requires": {
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@@ -503,7 +490,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-duplicate-keys/-/babel-plugin-transform-es2015-duplicate-keys-6.24.1.tgz",
       "integrity": "sha1-c+s9MQypaePvnskcU3QabxV2Qj4=",
-      "dev": true,
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@@ -513,7 +499,6 @@
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       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-for-of/-/babel-plugin-transform-es2015-for-of-6.23.0.tgz",
       "integrity": "sha1-9HyVsrYT3x0+zC/bdXNiPHUkhpE=",
-      "dev": true,
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       }
@@ -522,7 +507,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-function-name/-/babel-plugin-transform-es2015-function-name-6.24.1.tgz",
       "integrity": "sha1-g0yJhTvDaxrw86TF26qU/Y6sqos=",
-      "dev": true,
       "requires": {
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         "babel-runtime": "6.26.0",
@@ -533,7 +517,6 @@
       "version": "6.22.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-literals/-/babel-plugin-transform-es2015-literals-6.22.0.tgz",
       "integrity": "sha1-T1SgLWzWbPkVKAAZox0xklN3yi4=",
-      "dev": true,
       "requires": {
         "babel-runtime": "6.26.0"
       }
@@ -542,7 +525,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-amd/-/babel-plugin-transform-es2015-modules-amd-6.24.1.tgz",
       "integrity": "sha1-Oz5UAXI5hC1tGcMBHEvS8AoA0VQ=",
-      "dev": true,
       "requires": {
         "babel-plugin-transform-es2015-modules-commonjs": "6.26.0",
         "babel-runtime": "6.26.0",
@@ -553,7 +535,6 @@
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-commonjs/-/babel-plugin-transform-es2015-modules-commonjs-6.26.0.tgz",
       "integrity": "sha1-DYOUApt9xqvhqX7xgeAHWN0uXYo=",
-      "dev": true,
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         "babel-runtime": "6.26.0",
@@ -565,7 +546,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-modules-systemjs/-/babel-plugin-transform-es2015-modules-systemjs-6.24.1.tgz",
       "integrity": "sha1-/4mhQrkRmpBhlfXxBuzzBdlAfSM=",
-      "dev": true,
       "requires": {
         "babel-helper-hoist-variables": "6.24.1",
         "babel-runtime": "6.26.0",
@@ -576,7 +556,6 @@
       "version": "6.24.1",
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       "integrity": "sha1-rJl+YoXNGO1hdq22B9YCNErThGg=",
-      "dev": true,
       "requires": {
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         "babel-runtime": "6.26.0",
@@ -587,7 +566,6 @@
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       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-object-super/-/babel-plugin-transform-es2015-object-super-6.24.1.tgz",
       "integrity": "sha1-JM72muIcuDp/hgPa0CH1cusnj40=",
-      "dev": true,
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@@ -597,7 +575,6 @@
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       "integrity": "sha1-V6w1GrScrxSpfNE7CfZv3wpiXys=",
-      "dev": true,
       "requires": {
         "babel-helper-call-delegate": "6.24.1",
         "babel-helper-get-function-arity": "6.24.1",
@@ -611,7 +588,6 @@
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-shorthand-properties/-/babel-plugin-transform-es2015-shorthand-properties-6.24.1.tgz",
       "integrity": "sha1-JPh11nIch2YbvZmkYi5R8U3jiqA=",
-      "dev": true,
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@@ -621,7 +597,6 @@
       "version": "6.22.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-spread/-/babel-plugin-transform-es2015-spread-6.22.0.tgz",
       "integrity": "sha1-1taKmfia7cRTbIGlQujdnxdG+NE=",
-      "dev": true,
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@@ -630,7 +605,6 @@
       "version": "6.24.1",
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       "integrity": "sha1-AMHNsaynERLN8M9hJsLta0V8zbw=",
-      "dev": true,
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@@ -641,7 +615,6 @@
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       "integrity": "sha1-qEs0UPfp+PH2g51taH2oS7EjbY0=",
-      "dev": true,
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       }
@@ -650,7 +623,6 @@
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       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-typeof-symbol/-/babel-plugin-transform-es2015-typeof-symbol-6.23.0.tgz",
       "integrity": "sha1-3sCfHN3/lLUqxz1QXITfWdzOs3I=",
-      "dev": true,
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       }
@@ -659,7 +631,6 @@
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       "resolved": "https://registry.npmjs.org/babel-plugin-transform-es2015-unicode-regex/-/babel-plugin-transform-es2015-unicode-regex-6.24.1.tgz",
       "integrity": "sha1-04sS9C6nMj9yk4fxinxa4frrNek=",
-      "dev": true,
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@@ -689,24 +660,14 @@
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       "integrity": "sha1-4HA2lvveJ/Cj78rPi03KL3s6jy8=",
-      "dev": true,
       "requires": {
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-    "babel-plugin-transform-runtime": {
-      "version": "6.23.0",
-      "resolved": "https://registry.npmjs.org/babel-plugin-transform-runtime/-/babel-plugin-transform-runtime-6.23.0.tgz",
-      "integrity": "sha1-iEkNRGUC6puOfvsP4J7E2ZR5se4=",
-      "requires": {
-        "babel-runtime": "6.26.0"
-      }
-    },
     "babel-plugin-transform-strict-mode": {
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-transform-strict-mode/-/babel-plugin-transform-strict-mode-6.24.1.tgz",
       "integrity": "sha1-1fr3qleKZbvlkc9e2uBKDGcCB1g=",
-      "dev": true,
       "requires": {
         "babel-runtime": "6.26.0",
         "babel-types": "6.26.0"
@@ -731,6 +692,43 @@
         }
       }
     },
+    "babel-preset-env": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/babel-preset-env/-/babel-preset-env-1.6.0.tgz",
+      "integrity": "sha512-OVgtQRuOZKckrILgMA5rvctvFZPv72Gua9Rt006AiPoB0DJKGN07UmaQA+qRrYgK71MVct8fFhT0EyNWYorVew==",
+      "requires": {
+        "babel-plugin-check-es2015-constants": "6.22.0",
+        "babel-plugin-syntax-trailing-function-commas": "6.22.0",
+        "babel-plugin-transform-async-to-generator": "6.24.1",
+        "babel-plugin-transform-es2015-arrow-functions": "6.22.0",
+        "babel-plugin-transform-es2015-block-scoped-functions": "6.22.0",
+        "babel-plugin-transform-es2015-block-scoping": "6.26.0",
+        "babel-plugin-transform-es2015-classes": "6.24.1",
+        "babel-plugin-transform-es2015-computed-properties": "6.24.1",
+        "babel-plugin-transform-es2015-destructuring": "6.23.0",
+        "babel-plugin-transform-es2015-duplicate-keys": "6.24.1",
+        "babel-plugin-transform-es2015-for-of": "6.23.0",
+        "babel-plugin-transform-es2015-function-name": "6.24.1",
+        "babel-plugin-transform-es2015-literals": "6.22.0",
+        "babel-plugin-transform-es2015-modules-amd": "6.24.1",
+        "babel-plugin-transform-es2015-modules-commonjs": "6.26.0",
+        "babel-plugin-transform-es2015-modules-systemjs": "6.24.1",
+        "babel-plugin-transform-es2015-modules-umd": "6.24.1",
+        "babel-plugin-transform-es2015-object-super": "6.24.1",
+        "babel-plugin-transform-es2015-parameters": "6.24.1",
+        "babel-plugin-transform-es2015-shorthand-properties": "6.24.1",
+        "babel-plugin-transform-es2015-spread": "6.22.0",
+        "babel-plugin-transform-es2015-sticky-regex": "6.24.1",
+        "babel-plugin-transform-es2015-template-literals": "6.22.0",
+        "babel-plugin-transform-es2015-typeof-symbol": "6.23.0",
+        "babel-plugin-transform-es2015-unicode-regex": "6.24.1",
+        "babel-plugin-transform-exponentiation-operator": "6.24.1",
+        "babel-plugin-transform-regenerator": "6.26.0",
+        "browserslist": "2.4.0",
+        "invariant": "2.2.2",
+        "semver": "5.4.1"
+      }
+    },
     "babel-preset-es2015": {
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-preset-es2015/-/babel-preset-es2015-6.24.1.tgz",
@@ -914,6 +912,20 @@
         "repeat-element": "1.1.2"
       }
     },
+    "browserslist": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-2.4.0.tgz",
+      "integrity": "sha512-aM2Gt4x9bVlCUteADBS6JP0F+2tMWKM1jQzUulVROtdFWFIcIVvY76AJbr7GDqy0eDhn+PcnpzzivGxY4qiaKQ==",
+      "requires": {
+        "caniuse-lite": "1.0.30000740",
+        "electron-to-chromium": "1.3.24"
+      }
+    },
+    "caniuse-lite": {
+      "version": "1.0.30000740",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000740.tgz",
+      "integrity": "sha1-8sTATWVk64EuYQBoQXAK1Vf2+XM="
+    },
     "caseless": {
       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.11.0.tgz",
@@ -1105,6 +1117,11 @@
         "jsbn": "0.1.1"
       }
     },
+    "electron-to-chromium": {
+      "version": "1.3.24",
+      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.24.tgz",
+      "integrity": "sha1-m3uIuwXOufoBahd4M8wt3jiPIbY="
+    },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
@@ -1579,8 +1596,7 @@
     "jsesc": {
       "version": "0.5.0",
       "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
-      "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0=",
-      "dev": true
+      "integrity": "sha1-597mbjXW/Bb3EP6R1c9p9w8IkR0="
     },
     "json-schema": {
       "version": "0.2.3",
@@ -3294,8 +3310,7 @@
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       "resolved": "https://registry.npmjs.org/private/-/private-0.1.7.tgz",
-      "integrity": "sha1-aM5eih7woju1cMwoU3tTMqumPvE=",
-      "dev": true
+      "integrity": "sha1-aM5eih7woju1cMwoU3tTMqumPvE="
     },
     "process-nextick-args": {
       "version": "1.0.7",
@@ -3397,8 +3412,7 @@
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       "resolved": "https://registry.npmjs.org/regenerate/-/regenerate-1.3.2.tgz",
-      "integrity": "sha1-0ZQcZ7rUN+G+dkM63Vs4X5WxkmA=",
-      "dev": true
+      "integrity": "sha1-0ZQcZ7rUN+G+dkM63Vs4X5WxkmA="
     },
     "regenerator-runtime": {
       "version": "0.11.0",
@@ -3409,7 +3423,6 @@
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       "resolved": "https://registry.npmjs.org/regenerator-transform/-/regenerator-transform-0.10.1.tgz",
       "integrity": "sha512-PJepbvDbuK1xgIgnau7Y90cwaAmO/LCLMI2mPvaXq2heGMR3aWW5/BQvYrhJ8jgmQjXewXvBjzfqKcVOmhjZ6Q==",
-      "dev": true,
       "requires": {
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@@ -3430,7 +3443,6 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-2.0.0.tgz",
       "integrity": "sha1-SdA4g3uNz4v6W5pCE5k45uoq4kA=",
-      "dev": true,
       "requires": {
         "regenerate": "1.3.2",
         "regjsgen": "0.2.0",
@@ -3440,14 +3452,12 @@
     "regjsgen": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
-      "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc=",
-      "dev": true
+      "integrity": "sha1-bAFq3qxVT3WCP+N6wFuS1aTtsfc="
     },
     "regjsparser": {
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/regjsparser/-/regjsparser-0.1.5.tgz",
       "integrity": "sha1-fuj4Tcb6eS0/0K4ijSS9lJ6tIFw=",
-      "dev": true,
       "requires": {
         "jsesc": "0.5.0"
       }
@@ -3523,6 +3533,11 @@
       "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
       "dev": true
     },
+    "semver": {
+      "version": "5.4.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
+      "integrity": "sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg=="
+    },
     "set-immediate-shim": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz",

package.json

@@ -32,7 +32,12 @@
   "license": "ISC",
   "babel": {
     "presets": [
-      "es2015"
+      "env",
+      "stage-2"
     ]
+  },
+  "dependencies": {
+    "babel-preset-env": "^1.6.0",
+    "babel-preset-stage-2": "^6.24.1"
   }
 }

src/index.js

@@ -27,8 +27,9 @@ export {
 } from './string';
 
 export {
-    filter,
     defaults,
+    filter,
+    fromArray,
     prop
 } from './object';
 

src/object/fromArray.js

@@ -0,0 +1,30 @@
+/**
+ * Receives an array of objects and extracts an object with the given key as index. The key
+ * must be a property of the array items. If the property is not found on the item, the item
+ * is omitted.
+ *
+ * @param {Object[]} array
+ * @param {string} key
+ * @param {boolean} keep - should the extracted prop be kept in the result object
+ * @returns {*}
+ */
+import checkArray from '../array/_checkArray';
+
+export default (array, key, keep = true) => {
+    checkArray(array);
+
+    if (!(typeof key === 'string')) {
+        throw Error('key must be a string');
+    }
+
+    return array.reduce((object, item) => {
+        const { prop, ...rest } = item;
+
+        if (!prop) {
+            return object;
+        }
+
+        object[prop] = keep ? item : rest;
+        return object;
+    }, {});
+};

src/object/index.js

@@ -1,3 +1,4 @@
 export { default as defaults } from './defaults';
+export { default as fromArray } from './fromArray';
 export { default as filter } from './filter';
 export { default as prop } from './prop';