fix: Remove unecessary whitespace from SVG contents

```js
/* BEFORE */
{ circle: "\n  <circle cx=\"12\" cy=\"12\" r=\"10\"></circle>\n" }

/* AFTER */
{ circle: "<circle cx=\"12\" cy=\"12\" r=\"10\"></circle>" }
```

bin/__tests__/build-icons-object.test.js

@@ -3,9 +3,9 @@ import buildIconsObject from '../build-icons-object';
 
 const SVG_FILES = {
   'icon1.svg':
-    '<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="23" y1="1" x2="1" y2="23" /><line x1="1" y1="1" x2="23" y2="23" /></svg>',
+    '<svg\n  xmlns="http://www.w3.org/2000/svg"\n  width="24"\n  height="24"\n  viewBox="0 0 24 24"\n>\n  <line x1="23" y1="1" x2="1" y2="23" />\n  <line x1="1" y1="1" x2="23" y2="23" />\n</svg>',
   'icon2.svg':
-    '<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="11" /></svg>',
+    '<svg\n  xmlns="http://www.w3.org/2000/svg"\n  width="24"\n  height="24"\n  viewBox="0 0 24 24"\n>\n  <circle cx="12" cy="12" r="11" />\n</svg>',
 };
 
 function getSvg(svgFile) {

bin/build-icons-object.js

 /* eslint-disable import/no-extraneous-dependencies */
 import path from 'path';
 import cheerio from 'cheerio';
+import { minify } from 'html-minifier';
 
 /**
  * Build an object in the format: `{ <name>: <contents> }`.
@@ -28,7 +29,7 @@ function buildIconsObject(svgFiles, getSvg) {
  */
 function getSvgContents(svg) {
   const $ = cheerio.load(svg);
-  return $('svg').html();
+  return minify($('svg').html(), { collapseWhitespace: true });
 }
 
 export default buildIconsObject;

package-lock.json

@@ -1338,6 +1338,16 @@
       "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
       "dev": true
     },
+    "camel-case": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/camel-case/-/camel-case-3.0.0.tgz",
+      "integrity": "sha1-yjw2iKTpzzpM2nd9xNy8cTJJz3M=",
+      "dev": true,
+      "requires": {
+        "no-case": "2.3.2",
+        "upper-case": "1.1.3"
+      }
+    },
     "camelcase": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-2.1.1.tgz",
@@ -1450,6 +1460,15 @@
       "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.2.5.tgz",
       "integrity": "sha1-+zgB1FNGdknvNgPH1hoCvRKb3m0="
     },
+    "clean-css": {
+      "version": "4.1.9",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.1.9.tgz",
+      "integrity": "sha1-Nc7ornaHpJuYA09w3gDE7dOCYwE=",
+      "dev": true,
+      "requires": {
+        "source-map": "0.5.7"
+      }
+    },
     "cli-cursor": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-1.0.2.tgz",
@@ -4445,6 +4464,12 @@
         "sntp": "2.1.0"
       }
     },
+    "he": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/he/-/he-1.1.1.tgz",
+      "integrity": "sha1-k0EP0hsAlzUVH4howvJx80J+I/0=",
+      "dev": true
+    },
     "hmac-drbg": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
@@ -4496,6 +4521,40 @@
         "whatwg-encoding": "1.0.3"
       }
     },
+    "html-minifier": {
+      "version": "3.5.6",
+      "resolved": "https://registry.npmjs.org/html-minifier/-/html-minifier-3.5.6.tgz",
+      "integrity": "sha512-88FjtKrlak2XjczhxrBomgzV4jmGzM3UnHRBScRkJcmcRum0kb+IwhVAETJ8AVp7j0p3xugjSaw9L+RmI5/QOA==",
+      "dev": true,
+      "requires": {
+        "camel-case": "3.0.0",
+        "clean-css": "4.1.9",
+        "commander": "2.11.0",
+        "he": "1.1.1",
+        "ncname": "1.0.0",
+        "param-case": "2.1.1",
+        "relateurl": "0.2.7",
+        "uglify-js": "3.1.10"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "uglify-js": {
+          "version": "3.1.10",
+          "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.1.10.tgz",
+          "integrity": "sha512-0ul3BWx79We0mIPM1l72oqpMtWL0TVMnKZZY6FaHPy3tDzCZGXeFxw5N1ZvtkmQsLI+ECR/tUQyIYbyHUcuvEw==",
+          "dev": true,
+          "requires": {
+            "commander": "2.11.0",
+            "source-map": "0.6.1"
+          }
+        }
+      }
+    },
     "htmlparser2": {
       "version": "3.9.2",
       "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.9.2.tgz",
@@ -6232,6 +6291,12 @@
         "signal-exit": "3.0.2"
       }
     },
+    "lower-case": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/lower-case/-/lower-case-1.1.4.tgz",
+      "integrity": "sha1-miyr0bno4K6ZOkv31YdcOcQujqw=",
+      "dev": true
+    },
     "lru-cache": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.1.tgz",
@@ -6549,6 +6614,15 @@
       "integrity": "sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=",
       "dev": true
     },
+    "ncname": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/ncname/-/ncname-1.0.0.tgz",
+      "integrity": "sha1-W1etGLHKCShk72Kwse2BlPODtxw=",
+      "dev": true,
+      "requires": {
+        "xml-char-classes": "1.0.0"
+      }
+    },
     "nerf-dart": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/nerf-dart/-/nerf-dart-1.0.0.tgz",
@@ -6561,6 +6635,15 @@
       "integrity": "sha1-a+lPysqNd63gqWcNxGCRTJRHJEQ=",
       "dev": true
     },
+    "no-case": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/no-case/-/no-case-2.3.2.tgz",
+      "integrity": "sha512-rmTZ9kz+f3rCvK2TD1Ue/oZlns7OGoIWP4fc3llxxRXlOkHKoWPPWJOfFYpITabSow43QJbRIoHQXtt10VldyQ==",
+      "dev": true,
+      "requires": {
+        "lower-case": "1.1.4"
+      }
+    },
     "node-int64": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/node-int64/-/node-int64-0.4.0.tgz",
@@ -7025,6 +7108,15 @@
       "integrity": "sha1-8/dSL073gjSNqBYbrZ7P1Rv4OnU=",
       "dev": true
     },
+    "param-case": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/param-case/-/param-case-2.1.1.tgz",
+      "integrity": "sha1-35T9jPZTHs915r75oIWPvHK+Ikc=",
+      "dev": true,
+      "requires": {
+        "no-case": "2.3.2"
+      }
+    },
     "parse-asn1": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.0.tgz",
@@ -7539,6 +7631,12 @@
         }
       }
     },
+    "relateurl": {
+      "version": "0.2.7",
+      "resolved": "https://registry.npmjs.org/relateurl/-/relateurl-0.2.7.tgz",
+      "integrity": "sha1-VNvzd+UUQKypCkzSdGANP/LYiKk=",
+      "dev": true
+    },
     "remove-trailing-separator": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
@@ -8777,6 +8875,12 @@
       "integrity": "sha1-18D6KvXVoaZ/QlPa7pgTLnM/Dxk=",
       "dev": true
     },
+    "upper-case": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/upper-case/-/upper-case-1.1.3.tgz",
+      "integrity": "sha1-9rRQHC7EzdJrp4vnIilh3ndiFZg=",
+      "dev": true
+    },
     "url": {
       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
@@ -9114,6 +9218,12 @@
         "signal-exit": "3.0.2"
       }
     },
+    "xml-char-classes": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/xml-char-classes/-/xml-char-classes-1.0.0.tgz",
+      "integrity": "sha1-ZGV4SKIP/F31g6Qq2KJ3tFErvE0=",
+      "dev": true
+    },
     "xml-name-validator": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-2.0.1.tgz",

package.json

@@ -31,6 +31,7 @@
     "eslint": "^4.0.0",
     "eslint-config-airbnb-base": "^11.2.0",
     "eslint-plugin-import": "^2.5.0",
+    "html-minifier": "^3.5.6",
     "husky": "^0.13.4",
     "jest": "^21.2.1",
     "npm-run-all": "^4.1.2",