Linted everything, removed semistandard

.eslintrc.json

@@ -6,7 +6,7 @@
   },
   "extends": "eslint:recommended",
   "parserOptions": {
-    "ecmaVersion": 2016,
+    "ecmaVersion": 2018,
     "sourceType": "module"
   },
   "rules": {
@@ -46,7 +46,7 @@
     ],
     "brace-style": [
         "error",
-        "stroustrup",
+        "1tbs",
         {
             "allowSingleLine": true
         }

package-lock.json

@@ -3122,12 +3122,6 @@
       "integrity": "sha512-4zaPW5uRFasf2uRZkE19Y+W84KBV3q+oyWYOsgUN+5DQXE5HCsh7ZxeWDXxozk7NPycGm0kXcsJzLe5GZ1jCeg==",
       "dev": true
     },
-    "eslint-config-standard": {
-      "version": "12.0.0",
-      "resolved": "https://registry.npmjs.org/eslint-config-standard/-/eslint-config-standard-12.0.0.tgz",
-      "integrity": "sha512-COUz8FnXhqFitYj4DTqHzidjIL/t4mumGZto5c7DrBpvWoie+Sn3P4sLEzUGeYhRElWuFEf8K1S1EfvD1vixCQ==",
-      "dev": true
-    },
     "eslint-config-standard-jsx": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/eslint-config-standard-jsx/-/eslint-config-standard-jsx-5.0.0.tgz",
@@ -3185,144 +3179,10 @@
         }
       }
     },
-    "eslint-plugin-es": {
+    "eslint-plugin-async-await": {
-      "version": "1.3.1",
+      "version": "0.0.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-es/-/eslint-plugin-es-1.3.1.tgz",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-async-await/-/eslint-plugin-async-await-0.0.0.tgz",
-      "integrity": "sha512-9XcVyZiQRVeFjqHw8qHNDAZcQLqaHlOGGpeYqzYh8S4JYCWTCO3yzyen8yVmA5PratfzTRWDwCOFphtDEG+w/w==",
+      "integrity": "sha1-DyrhejgUeAY11I8kCd+eN4mMoJ8=",
-      "dev": true,
-      "requires": {
-        "eslint-utils": "1.3.1",
-        "regexpp": "2.0.1"
-      }
-    },
-    "eslint-plugin-import": {
-      "version": "2.14.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-import/-/eslint-plugin-import-2.14.0.tgz",
-      "integrity": "sha512-FpuRtniD/AY6sXByma2Wr0TXvXJ4nA/2/04VPlfpmUDPOpOY264x+ILiwnrk/k4RINgDAyFZByxqPUbSQ5YE7g==",
-      "dev": true,
-      "requires": {
-        "contains-path": "0.1.0",
-        "debug": "2.6.9",
-        "doctrine": "1.5.0",
-        "eslint-import-resolver-node": "0.3.2",
-        "eslint-module-utils": "2.2.0",
-        "has": "1.0.1",
-        "lodash": "4.17.11",
-        "minimatch": "3.0.4",
-        "read-pkg-up": "2.0.0",
-        "resolve": "1.8.1"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "dev": true,
-          "requires": {
-            "ms": "2.0.0"
-          }
-        },
-        "doctrine": {
-          "version": "1.5.0",
-          "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
-          "integrity": "sha1-N53Ocw9hZvds76TmcHoVmwLFpvo=",
-          "dev": true,
-          "requires": {
-            "esutils": "2.0.2",
-            "isarray": "1.0.0"
-          }
-        },
-        "find-up": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/find-up/-/find-up-2.1.0.tgz",
-          "integrity": "sha1-RdG35QbHF93UgndaK3eSCjwMV6c=",
-          "dev": true,
-          "requires": {
-            "locate-path": "2.0.0"
-          }
-        },
-        "path-type": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/path-type/-/path-type-2.0.0.tgz",
-          "integrity": "sha1-8BLMuEFbcJb8LaoQVMPXI4lZTHM=",
-          "dev": true,
-          "requires": {
-            "pify": "2.3.0"
-          }
-        },
-        "read-pkg": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-2.0.0.tgz",
-          "integrity": "sha1-jvHAYjxqbbDcZxPEv6xGMysjaPg=",
-          "dev": true,
-          "requires": {
-            "load-json-file": "2.0.0",
-            "normalize-package-data": "2.4.0",
-            "path-type": "2.0.0"
-          }
-        },
-        "read-pkg-up": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/read-pkg-up/-/read-pkg-up-2.0.0.tgz",
-          "integrity": "sha1-a3KoBImE4MQeeVEP1en6mbO1Sb4=",
-          "dev": true,
-          "requires": {
-            "find-up": "2.1.0",
-            "read-pkg": "2.0.0"
-          }
-        },
-        "resolve": {
-          "version": "1.8.1",
-          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.8.1.tgz",
-          "integrity": "sha512-AicPrAC7Qu1JxPCZ9ZgCZlY35QgFnNqc+0LtbRNxnVw4TXvjQ72wnuL9JQcEBgXkI9JM8MsT9kaQoHcpCRJOYA==",
-          "dev": true,
-          "requires": {
-            "path-parse": "1.0.5"
-          }
-        }
-      }
-    },
-    "eslint-plugin-node": {
-      "version": "7.0.1",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-node/-/eslint-plugin-node-7.0.1.tgz",
-      "integrity": "sha512-lfVw3TEqThwq0j2Ba/Ckn2ABdwmL5dkOgAux1rvOk6CO7A6yGyPI2+zIxN6FyNkp1X1X/BSvKOceD6mBWSj4Yw==",
-      "dev": true,
-      "requires": {
-        "eslint-plugin-es": "1.3.1",
-        "eslint-utils": "1.3.1",
-        "ignore": "4.0.6",
-        "minimatch": "3.0.4",
-        "resolve": "1.8.1",
-        "semver": "5.6.0"
-      },
-      "dependencies": {
-        "ignore": {
-          "version": "4.0.6",
-          "resolved": "https://registry.npmjs.org/ignore/-/ignore-4.0.6.tgz",
-          "integrity": "sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==",
-          "dev": true
-        },
-        "resolve": {
-          "version": "1.8.1",
-          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.8.1.tgz",
-          "integrity": "sha512-AicPrAC7Qu1JxPCZ9ZgCZlY35QgFnNqc+0LtbRNxnVw4TXvjQ72wnuL9JQcEBgXkI9JM8MsT9kaQoHcpCRJOYA==",
-          "dev": true,
-          "requires": {
-            "path-parse": "1.0.5"
-          }
-        },
-        "semver": {
-          "version": "5.6.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
-          "integrity": "sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==",
-          "dev": true
-        }
-      }
-    },
-    "eslint-plugin-promise": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-promise/-/eslint-plugin-promise-4.0.1.tgz",
-      "integrity": "sha512-Si16O0+Hqz1gDHsys6RtFRrW7cCTB6P7p3OJmKp3Y3dxpQE2qwOA7d3xnV+0mBmrPoi0RBnxlCKvqu70te6wjg==",
       "dev": true
     },
     "eslint-plugin-react": {
@@ -3337,12 +3197,6 @@
         "prop-types": "15.6.1"
       }
     },
-    "eslint-plugin-standard": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-standard/-/eslint-plugin-standard-4.0.0.tgz",
-      "integrity": "sha512-OwxJkR6TQiYMmt1EsNRMe5qG3GsbjlcOhbGUBY4LtavF9DsLaTcoR+j2Tdjqi23oUwKNUqX7qcn5fPStafMdlA==",
-      "dev": true
-    },
     "eslint-scope": {
       "version": "3.7.1",
       "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-3.7.1.tgz",
@@ -5958,7 +5812,7 @@
     },
     "load-json-file": {
       "version": "2.0.0",
-      "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
       "integrity": "sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=",
       "dev": true,
       "requires": {

package.json

@@ -17,8 +17,7 @@
     "prismjs": "^1.15.0",
     "rollup": "^0.58.2",
     "rollup-plugin-babel": "^4.0.3",
-    "rollup-plugin-babel-minify": "^4.0.0",
+    "rollup-plugin-babel-minify": "^4.0.0"
-    "semistandard": "^12.0.1"
   },
   "name": "30-seconds-of-code",
   "description": "A collection of useful JavaScript snippets.",

scripts/lint.js

@@ -52,8 +52,8 @@ try {
   }
 
   const cmd =
-    `semistandard "${TEMP_PATH}" --fix & ` +
+    `prettier "${TEMP_PATH}/*.js" --single-quote --print-width=100 --write & ` +
-    `prettier "${TEMP_PATH}/*.js" --single-quote --print-width=100 --write`;
+    `eslint "${TEMP_PATH}/*.js" --quiet --fix --rule "no-undef: 0, no-unused-vars: 0, no-multiple-empty-lines: 0" -o eslint_errors.log -f table`;
 
   cp.exec(cmd, {}, () => {
     // Loop through each snippet now that semistandard and prettier did their job

snippets/call.md

@@ -11,9 +11,9 @@ const call = (key, ...args) => context => context[key](...args);
 ```js
 Promise.resolve([1, 2, 3])
   .then(call('map', x => 2 * x))
-  .then(console.log); //[ 2, 4, 6 ]
+  .then(console.log); // [ 2, 4, 6 ]
 const map = call.bind(null, 'map');
 Promise.resolve([1, 2, 3])
   .then(map(x => 2 * x))
-  .then(console.log); //[ 2, 4, 6 ]
+  .then(console.log); // [ 2, 4, 6 ]
 ```

snippets/deepFreeze.md

@@ -8,7 +8,7 @@ Calls `Object.freeze(obj)` recursively on all unfrozen properties of passed obje
 const deepFreeze = obj =>
   Object.keys(obj).forEach(
     prop =>
-      !obj[prop] instanceof Object || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
+      !(obj[prop] instanceof Object) || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
   ) || Object.freeze(obj);
 ```
 

snippets/defer.md

@@ -14,6 +14,6 @@ defer(console.log, 'a'), console.log('b'); // logs 'b' then 'a'
 
 // Example B:
 document.querySelector('#someElement').innerHTML = 'Hello';
-longRunningFunction(); //Browser will not update the HTML until this has finished
+longRunningFunction(); // Browser will not update the HTML until this has finished
 defer(longRunningFunction); // Browser will update the HTML then run the function
 ```

snippets/dig.md

@@ -10,9 +10,9 @@ const dig = (obj, target) =>
   target in obj
     ? obj[target]
     : Object.values(obj).reduce((acc, val) => {
-        if (acc !== undefined) return acc;
+      if (acc !== undefined) return acc;
-        if (typeof val === 'object') return dig(val, target);
+      if (typeof val === 'object') return dig(val, target);
-      }, undefined);
+    }, undefined);
 ```
 
 ```js

snippets/elo.md

@@ -15,9 +15,9 @@ const elo = ([...ratings], kFactor = 32, selfRating) => {
   const expectedScore = (self, opponent) => 1 / (1 + 10 ** ((opponent - self) / 400));
   const newRating = (rating, i) =>
     (selfRating || rating) + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
-  if (ratings.length === 2) {
+  if (ratings.length === 2)
     return [newRating(a, 1), newRating(b, 0)];
-  }
+
   for (let i = 0, len = ratings.length; i < len; i++) {
     let j = i;
     while (j < len - 1) {

snippets/factorial.md

@@ -11,8 +11,8 @@ Throws an exception if `n` is a negative number.
 const factorial = n =>
   n < 0
     ? (() => {
-        throw new TypeError('Negative numbers are not allowed!');
+      throw new TypeError('Negative numbers are not allowed!');
-      })()
+    })()
     : n <= 1
       ? 1
       : n * factorial(n - 1);

snippets/httpGet.md

@@ -21,7 +21,7 @@ const httpGet = (url, callback, err = console.error) => {
 httpGet(
   'https://jsonplaceholder.typicode.com/posts/1',
   console.log
-); /* 
+); /*
 Logs: {
   "userId": 1,
   "id": 1,

snippets/httpPost.md

@@ -42,7 +42,7 @@ Logs: {
 */
 httpPost(
   'https://jsonplaceholder.typicode.com/posts',
-  null, //does not send a body
+  null, // does not send a body
   console.log
 ); /*
 Logs: {

snippets/pipeAsyncFunctions.md

@@ -17,7 +17,7 @@ const sum = pipeAsyncFunctions(
   x => x + 3,
   async x => (await x) + 4
 );
-(async () => {
+(async() => {
   console.log(await sum(5)); // 15 (after one second)
 })();
 ```

snippets/remove.md

@@ -9,9 +9,9 @@ The `func` is invoked with three arguments (`value, index, array`).
 const remove = (arr, func) =>
   Array.isArray(arr)
     ? arr.filter(func).reduce((acc, val) => {
-        arr.splice(arr.indexOf(val), 1);
+      arr.splice(arr.indexOf(val), 1);
-        return acc.concat(val);
+      return acc.concat(val);
-      }, [])
+    }, [])
     : [];
 ```
 

snippets/runAsync.md

@@ -29,9 +29,9 @@ const longRunningFunction = () => {
   let result = 0;
   for (let i = 0; i < 1000; i++) {
     for (let j = 0; j < 700; j++) {
-      for (let k = 0; k < 300; k++) {
+      for (let k = 0; k < 300; k++)
         result = result + i + j + k;
-      }
+
     }
   }
   return result;

snippets/sumPower.md

@@ -16,6 +16,6 @@ const sumPower = (end, power = 2, start = 1) =>
 
 ```js
 sumPower(10); // 385
-sumPower(10, 3); //3025
+sumPower(10, 3); // 3025
-sumPower(10, 3, 5); //2925
+sumPower(10, 3, 5); // 2925
 ```

snippets/unzip.md

@@ -16,6 +16,6 @@ const unzip = arr =>
 ```
 
 ```js
-unzip([['a', 1, true], ['b', 2, false]]); //[['a', 'b'], [1, 2], [true, false]]
+unzip([['a', 1, true], ['b', 2, false]]); // [['a', 'b'], [1, 2], [true, false]]
-unzip([['a', 1, true], ['b', 2]]); //[['a', 'b'], [1, 2], [true]]
+unzip([['a', 1, true], ['b', 2]]); // [['a', 'b'], [1, 2], [true]]
 ```

test/deepFreeze/deepFreeze.js

@@ -1,6 +1,6 @@
 const deepFreeze = obj =>
   Object.keys(obj).forEach(
     prop =>
-      !obj[prop] instanceof Object || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
+      !(obj[prop] instanceof Object) || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
   ) || Object.freeze(obj);
 module.exports = deepFreeze;

test/dig/dig.js

@@ -2,7 +2,7 @@ const dig = (obj, target) =>
   target in obj
     ? obj[target]
     : Object.values(obj).reduce((acc, val) => {
-        if (acc !== undefined) return acc;
+      if (acc !== undefined) return acc;
-        if (typeof val === 'object') return dig(val, target);
+      if (typeof val === 'object') return dig(val, target);
-      }, undefined);
+    }, undefined);
 module.exports = dig;

test/elo/elo.js

@@ -3,9 +3,9 @@ const elo = ([...ratings], kFactor = 32, selfRating) => {
   const expectedScore = (self, opponent) => 1 / (1 + 10 ** ((opponent - self) / 400));
   const newRating = (rating, i) =>
     (selfRating || rating) + kFactor * (i - expectedScore(i ? a : b, i ? b : a));
-  if (ratings.length === 2) {
+  if (ratings.length === 2)
     return [newRating(a, 1), newRating(b, 0)];
-  }
+
   for (let i = 0, len = ratings.length; i < len; i++) {
     let j = i;
     while (j < len - 1) {

test/factorial/factorial.js

@@ -1,8 +1,8 @@
 const factorial = n =>
   n < 0
     ? (() => {
-        throw new TypeError('Negative numbers are not allowed!');
+      throw new TypeError('Negative numbers are not allowed!');
-      })()
+    })()
     : n <= 1
       ? 1
       : n * factorial(n - 1);

test/getImages/getImages.test.js

@@ -15,4 +15,4 @@ test("getImages returns an Array", () => {
 test("getImages removes duplicates from images Array", () => {
     expect(getImages(TEST_HTML, false).length).toBeLessThanOrEqual(getImages(TEST_HTML, true).length);
     expect(getImages(TEST_HTML, true)).toEqual(expect.arrayContaining(getImages(TEST_HTML, false)));
-});\n
+});

test/isPrimitive/isPrimitive.js

@@ -1,2 +1,2 @@
-const isPrimitive = val => !['object', 'function'].includes(typeof val) || val === null;
+const isPrimitive = val => Object(val) !== val;
 module.exports = isPrimitive;

test/remove/remove.js

@@ -1,8 +1,8 @@
 const remove = (arr, func) =>
   Array.isArray(arr)
     ? arr.filter(func).reduce((acc, val) => {
-        arr.splice(arr.indexOf(val), 1);
+      arr.splice(arr.indexOf(val), 1);
-        return acc.concat(val);
+      return acc.concat(val);
-      }, [])
+    }, [])
     : [];
 module.exports = remove;

test/squareSum/squareSum.js

@@ -0,0 +1,2 @@
+const squareSum = (...args) => args.reduce((squareSum, number) => squareSum + Math.pow(number, 2), 0);
+module.exports = squareSum;

test/squareSum/squareSum.test.js

@@ -0,0 +1,6 @@
+const expect = require('expect');
+const squareSum = require('./squareSum.js');
+
+test('squareSum is a Function', () => {
+  expect(squareSum).toBeInstanceOf(Function);
+});

test/throttle/throttle.js

@@ -14,7 +14,7 @@ const throttle = (fn, wait) => {
           fn.apply(context, args);
           lastTime = Date.now();
         }
-      }, wait - (Date.now() - lastTime));
+      }, Math.max(wait - (Date.now() - lastTime), 0));
     }
   };
 };