Snippet format update

To match the starter (for the migration)

migrator.js

@@ -0,0 +1,24 @@
+const snippets = require('./snippet_data/snippets.json');
+const fs = require('fs-extra');
+const path = require('path');
+
+snippets.data.forEach(snippet => {
+  fs.writeFileSync(
+    path.join(
+      snippet.meta.archived ? './snippets_archive' : './snippets', 
+      `${snippet.attributes.fileName}`),
+`---
+title: ${snippet.id}
+tags: ${snippet.attributes.tags.join(',')}
+---
+
+${snippet.attributes.text}
+
+\`\`\`js
+${snippet.attributes.codeBlocks.es6}
+\`\`\`
+
+\`\`\`js
+${snippet.attributes.codeBlocks.example}
+\`\`\``);
+});

package-lock.json

@@ -3488,7 +3488,7 @@
           "version": "1.2.5",
           "bundled": true,
           "requires": {
-            "minipass": "2.2.4"
+            "minipass": "^2.2.1"
           }
         },
         "fs.realpath": {
@@ -3606,17 +3606,16 @@
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
-          "optional": true,
           "requires": {
-            "safe-buffer": "5.1.1",
-            "yallist": "3.0.2"
+            "safe-buffer": "^5.1.1",
+            "yallist": "^3.0.0"
           }
         },
         "minizlib": {
           "version": "1.1.0",
           "bundled": true,
           "requires": {
-            "minipass": "2.2.4"
+            "minipass": "^2.2.1"
           }
         },
         "mkdirp": {
@@ -3651,16 +3650,16 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "detect-libc": "1.0.3",
-            "mkdirp": "0.5.1",
-            "needle": "2.2.0",
-            "nopt": "4.0.1",
-            "npm-packlist": "1.1.10",
-            "npmlog": "4.1.2",
-            "rc": "1.2.7",
-            "rimraf": "2.6.2",
-            "semver": "5.5.0",
-            "tar": "4.4.1"
+            "detect-libc": "^1.0.2",
+            "mkdirp": "^0.5.1",
+            "needle": "^2.2.0",
+            "nopt": "^4.0.1",
+            "npm-packlist": "^1.1.6",
+            "npmlog": "^4.0.2",
+            "rc": "^1.1.7",
+            "rimraf": "^2.6.1",
+            "semver": "^5.3.0",
+            "tar": "^4"
           }
         },
         "nopt": {
@@ -3802,8 +3801,7 @@
         },
         "safe-buffer": {
           "version": "5.1.1",
-          "bundled": true,
-          "optional": true
+          "bundled": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3893,8 +3891,7 @@
         },
         "yallist": {
           "version": "3.0.2",
-          "bundled": true,
-          "optional": true
+          "bundled": true
         }
       }
     },
@@ -6049,11 +6046,11 @@
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
-            "ansi-styles": "2.2.1",
-            "escape-string-regexp": "1.0.5",
-            "has-ansi": "2.0.0",
-            "strip-ansi": "3.0.1",
-            "supports-color": "2.0.0"
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
           }
         },
         "cross-spawn": {

package.json

@@ -10,13 +10,11 @@
     "glossary:keymaker": "node ./scripts/glossary/keyword.js",
     "builder": "node ./scripts/build.js",
     "linter": "node ./scripts/lint.js",
-    "tagger": "node ./scripts/tag.js",
     "webber": "node ./scripts/web.js",
     "tester": "node ./scripts/tdd.js",
     "extractor": "node ./scripts/extract.js",
     "vscoder": "node ./scripts/vscodegen.js",
     "packager": "node ./scripts/module.js",
-    "localizer": "node ./scripts/localize.js",
     "test": "jest --verbose --coverage"
   },
   "repository": {

scripts/tag.js

@@ -1,66 +0,0 @@
-/*
-  This is the tagger script that updates the tag_databse file and logs stats for snippet tags.
-  Run using `npm run tagger`.
-*/
-// Load modules
-const fs = require('fs-extra'),
-  { black, blue, green, yellow, red, bgWhite } = require('kleur');
-const util = require('./util');
-if (util.isTravisCI() && /^Travis build: \d+/g.test(process.env['TRAVIS_COMMIT_MESSAGE'])) {
-  console.log(`${green('NOBUILD')} Tagging terminated, parent commit is a Travis build!`);
-  process.exit(0);
-}
-// Set variables for paths
-const snippetsPath = './snippets';
-// Set variables for script
-let snippets = {},
-  output = '',
-  tagDbData = {},
-  missingTags = 0,
-  tagDbStats = {};
-// Start the timer of the script
-console.time('Tagger');
-// Synchronously read all snippets and sort them as necessary (case-insensitive)
-snippets = util.readSnippets(snippetsPath);
-// Load tag data from the database
-tagDbData = util.readTags();
-tagDbStats = Object.entries(tagDbData).reduce((acc, val) => {
-  val[1].forEach(v => (acc.hasOwnProperty(v) ? acc[v]++ : (acc[v] = 1)));
-  return acc;
-}, {});
-// Update the listing of snippets in tag_database and log the statistics, along with missing scripts
-try {
-  for (let snippet of Object.entries(snippets)) {
-    if (
-      tagDbData.hasOwnProperty(snippet[0].slice(0, -3)) &&
-      tagDbData[snippet[0].slice(0, -3)].join(',').trim()
-    ) {
-      output += `${snippet[0].slice(0, -3)}:${tagDbData[snippet[0].slice(0, -3)]
-        .join(',')
-        .trim()}\n`;
-    } else {
-      output += `${snippet[0].slice(0, -3)}:uncategorized\n`;
-      missingTags++;
-      console.log(`${yellow('Tagged uncategorized:')} ${snippet[0].slice(0, -3)}`);
-    }
-  }
-  // Write to tag_database
-  fs.writeFileSync('tag_database', output);
-} catch (err) {
-  // Handle errors (hopefully not!)
-  console.log(`${red('ERROR!')} During tag_database generation: ${err}`);
-  process.exit(1);
-}
-// Log statistics for the tag_database file
-console.log(`\n${bgWhite(black('=== TAG STATS ==='))}`);
-for (let tagData of Object.entries(tagDbStats)
-  .filter(v => v[0] !== 'undefined')
-  .sort((a, b) => a[0].localeCompare(b[0])))
-  console.log(`${green(tagData[0])}: ${tagData[1]} snippets`);
-console.log(
-  `${blue("New untagged snippets (will be tagged as 'uncategorized'):")} ${missingTags}\n`
-);
-// Log a success message
-console.log(`${green('SUCCESS!')} tag_database file updated!`);
-// Log the time taken
-console.timeEnd('Tagger');

snippets/CSVToArray.md

@@ -1,4 +1,7 @@
-### CSVToArray
+---
+title: CSVToArray
+tags: string,array,utility,intermediate
+---
 
 Converts a comma-separated values (CSV) string to a 2D array.
 
@@ -19,4 +22,4 @@ const CSVToArray = (data, delimiter = ',', omitFirstRow = false) =>
 CSVToArray('a,b\nc,d'); // [['a','b'],['c','d']];
 CSVToArray('a;b\nc;d', ';'); // [['a','b'],['c','d']];
 CSVToArray('col1,col2\na,b\nc,d', ',', true); // [['a','b'],['c','d']];
-```
+```

snippets/CSVToJSON.md

@@ -1,4 +1,7 @@
-### CSVToJSON
+---
+title: CSVToJSON
+tags: string,array,object,advanced
+---
 
 Converts a comma-separated values (CSV) string to a 2D array of objects.
 The first row of the string is used as the title row.
@@ -24,4 +27,4 @@ const CSVToJSON = (data, delimiter = ',') => {
 ```js
 CSVToJSON('col1,col2\na,b\nc,d'); // [{'col1': 'a', 'col2': 'b'}, {'col1': 'c', 'col2': 'd'}];
 CSVToJSON('col1;col2\na;b\nc;d', ';'); // [{'col1': 'a', 'col2': 'b'}, {'col1': 'c', 'col2': 'd'}];
-```
+```

snippets/JSONToFile.md

@@ -1,4 +1,7 @@
-### JSONToFile
+---
+title: JSONToFile
+tags: node,json,intermediate
+---
 
 Writes a JSON object to a file.
 
@@ -12,4 +15,4 @@ const JSONToFile = (obj, filename) =>
 
 ```js
 JSONToFile({ test: 'is passed' }, 'testJsonFile'); // writes the object to 'testJsonFile.json'
-```
+```

snippets/JSONtoCSV.md

@@ -1,4 +1,7 @@
-### JSONtoCSV
+---
+title: JSONtoCSV
+tags: array,string,object,advanced
+---
 
 Converts an array of objects to a comma-separated values (CSV) string that contains only the `columns` specified.
 
@@ -23,4 +26,4 @@ const JSONtoCSV = (arr, columns, delimiter = ',') =>
 ```js
 JSONtoCSV([{ a: 1, b: 2 }, { a: 3, b: 4, c: 5 }, { a: 6 }, { b: 7 }], ['a', 'b']); // 'a,b\n"1","2"\n"3","4"\n"6",""\n"","7"'
 JSONtoCSV([{ a: 1, b: 2 }, { a: 3, b: 4, c: 5 }, { a: 6 }, { b: 7 }], ['a', 'b'], ';'); // 'a;b\n"1";"2"\n"3";"4"\n"6";""\n"";"7"'
-```
+```

snippets/RGBToHex.md

@@ -1,4 +1,7 @@
-### RGBToHex
+---
+title: RGBToHex
+tags: utility,intermediate
+---
 
 Converts the values of RGB components to a color code.
 
@@ -10,4 +13,4 @@ const RGBToHex = (r, g, b) => ((r << 16) + (g << 8) + b).toString(16).padStart(6
 
 ```js
 RGBToHex(255, 165, 1); // 'ffa501'
-```
+```

snippets/URLJoin.md

@@ -1,4 +1,7 @@
-### URLJoin
+---
+title: URLJoin
+tags: string,utility,regexp,advanced
+---
 
 Joins all given URL segments together, then normalizes the resulting URL.
 
@@ -18,4 +21,4 @@ const URLJoin = (...args) =>
 
 ```js
 URLJoin('http://www.google.com', 'a', '/b/cd', '?foo=123', '?bar=foo'); // 'http://www.google.com/a/b/cd?foo=123&bar=foo'
-```
+```

snippets/UUIDGeneratorBrowser.md

@@ -1,4 +1,7 @@
-### UUIDGeneratorBrowser
+---
+title: UUIDGeneratorBrowser
+tags: browser,utility,random,intermediate
+---
 
 Generates a UUID in a browser.
 
@@ -13,4 +16,4 @@ const UUIDGeneratorBrowser = () =>
 
 ```js
 UUIDGeneratorBrowser(); // '7982fcfe-5721-4632-bede-6000885be57d'
-```
+```

snippets/UUIDGeneratorNode.md

@@ -1,4 +1,7 @@
-### UUIDGeneratorNode
+---
+title: UUIDGeneratorNode
+tags: node,utility,random,intermediate
+---
 
 Generates a UUID in Node.JS.
 
@@ -14,4 +17,4 @@ const UUIDGeneratorNode = () =>
 
 ```js
 UUIDGeneratorNode(); // '79c7c136-60ee-40a2-beb2-856f1feabefc'
-```
+```

snippets/all.md

@@ -1,4 +1,7 @@
-### all
+---
+title: all
+tags: array,function,beginner
+---
 
 Returns `true` if the provided predicate function returns `true` for all elements in a collection, `false` otherwise.
 
@@ -12,4 +15,4 @@ const all = (arr, fn = Boolean) => arr.every(fn);
 ```js
 all([4, 2, 3], x => x > 1); // true
 all([1, 2, 3]); // true
-```
+```

snippets/allEqual.md

@@ -1,4 +1,7 @@
-### allEqual
+---
+title: allEqual
+tags: array,function,beginner
+---
 
 Check if all elements in an array are equal.
 
@@ -12,4 +15,4 @@ const allEqual = arr => arr.every(val => val === arr[0]);
 ```js
 allEqual([1, 2, 3, 4, 5, 6]); // false
 allEqual([1, 1, 1, 1]); // true
-```
+```

snippets/any.md

@@ -1,4 +1,7 @@
-### any
+---
+title: any
+tags: array,function,beginner
+---
 
 Returns `true` if the provided predicate function returns `true` for at least one element in a collection, `false` otherwise.
 
@@ -12,4 +15,4 @@ const any = (arr, fn = Boolean) => arr.some(fn);
 ```js
 any([0, 1, 2, 0], x => x >= 2); // true
 any([0, 0, 1, 0]); // true
-```
+```

snippets/approximatelyEqual.md

@@ -1,4 +1,7 @@
-### approximatelyEqual
+---
+title: approximatelyEqual
+tags: math,beginner
+---
 
 Checks if two numbers are approximately equal to each other.
 
@@ -11,4 +14,4 @@ const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsi
 
 ```js
 approximatelyEqual(Math.PI / 2.0, 1.5708); // true
-```
+```

snippets/arrayToCSV.md

@@ -1,4 +1,7 @@
-### arrayToCSV
+---
+title: arrayToCSV
+tags: array,string,utility,intermediate
+---
 
 Converts a 2D array to a comma-separated values (CSV) string.
 
@@ -17,4 +20,4 @@ const arrayToCSV = (arr, delimiter = ',') =>
 arrayToCSV([['a', 'b'], ['c', 'd']]); // '"a","b"\n"c","d"'
 arrayToCSV([['a', 'b'], ['c', 'd']], ';'); // '"a";"b"\n"c";"d"'
 arrayToCSV([['a', '"b" great'], ['c', 3.1415]]); // '"a","""b"" great"\n"c",3.1415'
-```
+```

snippets/arrayToHtmlList.md

@@ -1,4 +1,7 @@
-### arrayToHtmlList
+---
+title: arrayToHtmlList
+tags: browser,array,intermediate
+---
 
 Converts the given array elements into `<li>` tags and appends them to the list of the given id.
 
@@ -14,4 +17,4 @@ const arrayToHtmlList = (arr, listID) =>
 
 ```js
 arrayToHtmlList(['item 1', 'item 2'], 'myListID');
-```
+```

snippets/ary.md

@@ -1,4 +1,7 @@
-### ary
+---
+title: ary
+tags: adapter,function,intermediate
+---
 
 Creates a function that accepts up to `n` arguments, ignoring any additional arguments.
 
@@ -11,4 +14,4 @@ const ary = (fn, n) => (...args) => fn(...args.slice(0, n));
 ```js
 const firstTwoMax = ary(Math.max, 2);
 [[2, 6, 'a'], [8, 4, 6], [10]].map(x => firstTwoMax(...x)); // [6, 8, 10]
-```
+```

snippets/atob.md

@@ -1,4 +1,7 @@
-### atob
+---
+title: atob
+tags: node,string,utility,beginner
+---
 
 Decodes a string of data which has been encoded using base-64 encoding.
 
@@ -10,4 +13,4 @@ const atob = str => Buffer.from(str, 'base64').toString('binary');
 
 ```js
 atob('Zm9vYmFy'); // 'foobar'
-```
+```

snippets/attempt.md

@@ -1,4 +1,7 @@
-### attempt
+---
+title: attempt
+tags: function,intermediate
+---
 
 Attempts to invoke a function with the provided arguments, returning either the result or the caught error object.
 
@@ -19,4 +22,4 @@ var elements = attempt(function(selector) {
   return document.querySelectorAll(selector);
 }, '>_>');
 if (elements instanceof Error) elements = []; // elements = []
-```
+```

snippets/average.md

@@ -1,4 +1,7 @@
-### average
+---
+title: average
+tags: math,array,beginner
+---
 
 Returns the average of two or more numbers.
 
@@ -11,4 +14,4 @@ const average = (...nums) => nums.reduce((acc, val) => acc + val, 0) / nums.leng
 ```js
 average(...[1, 2, 3]); // 2
 average(1, 2, 3); // 2
-```
+```

snippets/averageBy.md

@@ -1,4 +1,7 @@
-### averageBy
+---
+title: averageBy
+tags: math,array,function,intermediate
+---
 
 Returns the average of an array, after mapping each element to a value using the provided function.
 
@@ -13,4 +16,4 @@ const averageBy = (arr, fn) =>
 ```js
 averageBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], o => o.n); // 5
 averageBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], 'n'); // 5
-```
+```

snippets/bifurcate.md

@@ -1,4 +1,7 @@
-### bifurcate
+---
+title: bifurcate
+tags: array,intermediate
+---
 
 Splits values into two groups. If an element in `filter` is truthy, the corresponding element in the collection belongs to the first group; otherwise, it belongs to the second group.
 
@@ -11,4 +14,4 @@ const bifurcate = (arr, filter) =>
 
 ```js
 bifurcate(['beep', 'boop', 'foo', 'bar'], [true, true, false, true]); // [ ['beep', 'boop', 'bar'], ['foo'] ]
-```
+```

snippets/bifurcateBy.md

@@ -1,4 +1,7 @@
-### bifurcateBy
+---
+title: bifurcateBy
+tags: array,function,intermediate
+---
 
 Splits values into two groups according to a predicate function, which specifies which group an element in the input collection belongs to. If the predicate function returns a truthy value, the collection element belongs to the first group; otherwise, it belongs to the second group.
 
@@ -11,4 +14,4 @@ const bifurcateBy = (arr, fn) =>
 
 ```js
 bifurcateBy(['beep', 'boop', 'foo', 'bar'], x => x[0] === 'b'); // [ ['beep', 'boop', 'bar'], ['foo'] ]
-```
+```

snippets/bind.md

@@ -1,4 +1,7 @@
-### bind
+---
+title: bind
+tags: function,object,intermediate
+---
 
 Creates a function that invokes `fn` with a given context, optionally adding any additional supplied parameters to the beginning of the arguments.
 
@@ -16,4 +19,4 @@ function greet(greeting, punctuation) {
 const freddy = { user: 'fred' };
 const freddyBound = bind(greet, freddy);
 console.log(freddyBound('hi', '!')); // 'hi fred!'
-```
+```

snippets/bindAll.md

@@ -1,4 +1,7 @@
-### bindAll
+---
+title: bindAll
+tags: object,function,intermediate
+---
 
 Binds methods of an object to the object itself, overwriting the existing method.
 
@@ -25,4 +28,4 @@ var view = {
 };
 bindAll(view, 'click');
 jQuery(element).on('click', view.click); // Logs 'clicked docs' when clicked.
-```
+```

snippets/bindKey.md

@@ -1,4 +1,7 @@
-### bindKey
+---
+title: bindKey
+tags: function,object,intermediate
+---
 
 Creates a function that invokes the method at a given key of an object, optionally adding any additional supplied parameters to the beginning of the arguments.
 
@@ -19,4 +22,4 @@ const freddy = {
 };
 const freddyBound = bindKey(freddy, 'greet');
 console.log(freddyBound('hi', '!')); // 'hi fred!'
-```
+```

snippets/binomialCoefficient.md

@@ -1,4 +1,7 @@
-### binomialCoefficient
+---
+title: binomialCoefficient
+tags: math,intermediate
+---
 
 Evaluates the binomial coefficient of two integers `n` and `k`.
 
@@ -23,4 +26,4 @@ const binomialCoefficient = (n, k) => {
 
 ```js
 binomialCoefficient(8, 2); // 28
-```
+```

snippets/bottomVisible.md

@@ -1,4 +1,7 @@
-### bottomVisible
+---
+title: bottomVisible
+tags: browser,intermediate
+---
 
 Returns `true` if the bottom of the page is visible, `false` otherwise.
 
@@ -12,4 +15,4 @@ const bottomVisible = () =>
 
 ```js
 bottomVisible(); // true
-```
+```

snippets/btoa.md

@@ -1,4 +1,7 @@
-### btoa
+---
+title: btoa
+tags: node,string,utility,beginner
+---
 
 Creates a base-64 encoded ASCII string from a String object in which each character in the string is treated as a byte of binary data.
 
@@ -10,4 +13,4 @@ const btoa = str => Buffer.from(str, 'binary').toString('base64');
 
 ```js
 btoa('foobar'); // 'Zm9vYmFy'
-```
+```

snippets/byteSize.md

@@ -1,4 +1,7 @@
-### byteSize
+---
+title: byteSize
+tags: string,beginner
+---
 
 Returns the length of a string in bytes.
 
@@ -11,4 +14,4 @@ const byteSize = str => new Blob([str]).size;
 ```js
 byteSize('😀'); // 4
 byteSize('Hello World'); // 11
-```
+```

snippets/call.md

@@ -1,13 +1,16 @@
-### call
-
+---
+title: call
+tags: adapter,function,intermediate
+---
+
 Given a key and a set of arguments, call them when given a context. Primarily useful in composition.
 
-Use a closure to call a stored key with stored arguments.
-
+Use a closure to call a stored key with stored arguments.
+
 ```js
 const call = (key, ...args) => context => context[key](...args);
-```
-
+```
+
 ```js
 Promise.resolve([1, 2, 3])
   .then(call('map', x => 2 * x))
@@ -16,4 +19,4 @@ const map = call.bind(null, 'map');
 Promise.resolve([1, 2, 3])
   .then(map(x => 2 * x))
   .then(console.log); // [ 2, 4, 6 ]
-```
+```

snippets/capitalize.md

@@ -1,4 +1,7 @@
-### capitalize
+---
+title: capitalize
+tags: string,array,intermediate
+---
 
 Capitalizes the first letter of a string.
 
@@ -13,4 +16,4 @@ const capitalize = ([first, ...rest], lowerRest = false) =>
 ```js
 capitalize('fooBar'); // 'FooBar'
 capitalize('fooBar', true); // 'Foobar'
-```
+```

snippets/capitalizeEveryWord.md

@@ -1,4 +1,7 @@
-### capitalizeEveryWord
+---
+title: capitalizeEveryWord
+tags: string,regexp,intermediate
+---
 
 Capitalizes the first letter of every word in a string.
 
@@ -10,4 +13,4 @@ const capitalizeEveryWord = str => str.replace(/\b[a-z]/g, char => char.toUpperC
 
 ```js
 capitalizeEveryWord('hello world!'); // 'Hello World!'
-```
+```

snippets/castArray.md

@@ -1,4 +1,7 @@
-### castArray
+---
+title: castArray
+tags: utility,array,type,beginner
+---
 
 Casts the provided value as an array if it's not one.
 
@@ -11,4 +14,4 @@ const castArray = val => (Array.isArray(val) ? val : [val]);
 ```js
 castArray('foo'); // ['foo']
 castArray([1]); // [1]
-```
+```

snippets/chainAsync.md

@@ -1,4 +1,7 @@
-### chainAsync
+---
+title: chainAsync
+tags: function,intermediate
+---
 
 Chains asynchronous functions.
 
@@ -30,4 +33,4 @@ chainAsync([
     console.log('2 second');
   }
 ]);
-```
+```

snippets/checkProp.md

@@ -1,4 +1,7 @@
-### checkProp
+---
+title: checkProp
+tags: function,object,utility,beginner
+---
 
 Given a `predicate` function and a `prop` string, this curried function will then take an `object` to inspect by calling the property and passing it to the predicate.
 
@@ -9,22 +12,6 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
 ```
 
 ```js
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
 const lengthIs4 = checkProp(l => l === 4, 'length');
 lengthIs4([]); // false
 lengthIs4([1,2,3,4]); // true
@@ -42,4 +29,4 @@ const noLength(l => l === undefined, 'length');
 noLength([]); // false
 noLength({}); // true
 noLength(new Set()); // true
-```
+```

snippets/chunk.md

@@ -1,4 +1,7 @@
-### chunk
+---
+title: chunk
+tags: array,intermediate
+---
 
 Chunks an array into smaller arrays of a specified size.
 
@@ -15,4 +18,4 @@ const chunk = (arr, size) =>
 
 ```js
 chunk([1, 2, 3, 4, 5], 2); // [[1,2],[3,4],[5]]
-```
+```

snippets/clampNumber.md

@@ -1,4 +1,7 @@
-### clampNumber
+---
+title: clampNumber
+tags: math,beginner
+---
 
 Clamps `num` within the inclusive range specified by the boundary values `a` and `b`.
 
@@ -12,4 +15,4 @@ const clampNumber = (num, a, b) => Math.max(Math.min(num, Math.max(a, b)), Math.
 ```js
 clampNumber(2, 3, 5); // 3
 clampNumber(1, -1, -5); // -1
-```
+```

snippets/cloneRegExp.md

@@ -1,4 +1,7 @@
-### cloneRegExp
+---
+title: cloneRegExp
+tags: utility,regexp,intermediate
+---
 
 Clones a regular expression.
 
@@ -11,4 +14,4 @@ const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
 ```js
 const regExp = /lorem ipsum/gi;
 const regExp2 = cloneRegExp(regExp); // /lorem ipsum/gi
-```
+```

snippets/coalesce.md

@@ -1,4 +1,7 @@
-### coalesce
+---
+title: coalesce
+tags: utility,beginner
+---
 
 Returns the first non-null/undefined argument.
 
@@ -10,4 +13,4 @@ const coalesce = (...args) => args.find(_ => ![undefined, null].includes(_));
 
 ```js
 coalesce(null, undefined, '', NaN, 'Waldo'); // ""
-```
+```

snippets/coalesceFactory.md

@@ -1,4 +1,7 @@
-### coalesceFactory
+---
+title: coalesceFactory
+tags: utility,intermediate
+---
 
 Returns a customized coalesce function that returns the first argument that returns `true` from the provided argument validation function.
 
@@ -11,4 +14,4 @@ const coalesceFactory = valid => (...args) => args.find(valid);
 ```js
 const customCoalesce = coalesceFactory(_ => ![null, undefined, '', NaN].includes(_));
 customCoalesce(undefined, null, NaN, '', 'Waldo'); // "Waldo"
-```
+```

snippets/collectInto.md

@@ -1,17 +1,20 @@
-### collectInto
-
+---
+title: collectInto
+tags: adapter,function,array,intermediate
+---
+
 Changes a function that accepts an array into a variadic function.
 
-Given a function, return a closure that collects all inputs into an array-accepting function.
-
+Given a function, return a closure that collects all inputs into an array-accepting function.
+
 ```js
 const collectInto = fn => (...args) => fn(args);
-```
-
+```
+
 ```js
 const Pall = collectInto(Promise.all.bind(Promise));
 let p1 = Promise.resolve(1);
 let p2 = Promise.resolve(2);
 let p3 = new Promise(resolve => setTimeout(resolve, 2000, 3));
 Pall(p1, p2, p3).then(console.log); // [1, 2, 3] (after about 2 seconds)
-```
+```

snippets/colorize.md

@@ -1,4 +1,7 @@
-### colorize
+---
+title: colorize
+tags: node,utility,string,intermediate
+---
 
 Add special characters to text to print in color in the console (combined with `console.log()`).
 
@@ -30,4 +33,4 @@ const colorize = (...args) => ({
 console.log(colorize('foo').red); // 'foo' (red letters)
 console.log(colorize('foo', 'bar').bgBlue); // 'foo bar' (blue background)
 console.log(colorize(colorize('foo').yellow, colorize('foo').green).bgWhite); // 'foo bar' (first word in yellow letters, second word in green letters, white background for both)
-```
+```

snippets/compact.md

@@ -1,4 +1,7 @@
-### compact
+---
+title: compact
+tags: array,beginner
+---
 
 Removes falsy values from an array.
 
@@ -10,4 +13,4 @@ const compact = arr => arr.filter(Boolean);
 
 ```js
 compact([0, 1, false, 2, '', 3, 'a', 'e' * 23, NaN, 's', 34]); // [ 1, 2, 3, 'a', 's', 34 ]
-```
+```

snippets/compactWhitespace.md

@@ -1,4 +1,7 @@
-### compactWhitespace
+---
+title: compactWhitespace
+tags: string,regexp,beginner
+---
 
 Returns a string with whitespaces compacted.
 
@@ -11,4 +14,4 @@ const compactWhitespace = str => str.replace(/\s{2,}/g, ' ');
 ```js
 compactWhitespace('Lorem    Ipsum'); // 'Lorem Ipsum'
 compactWhitespace('Lorem \n Ipsum'); // 'Lorem Ipsum'
-```
+```

snippets/compose.md

@@ -1,4 +1,7 @@
-### compose
+---
+title: compose
+tags: function,intermediate
+---
 
 Performs right-to-left function composition.
 
@@ -17,4 +20,4 @@ const multiplyAndAdd5 = compose(
   multiply
 );
 multiplyAndAdd5(5, 2); // 15
-```
+```

snippets/composeRight.md

@@ -1,4 +1,7 @@
-### composeRight
+---
+title: composeRight
+tags: function,intermediate
+---
 
 Performs left-to-right function composition.
 
@@ -14,4 +17,4 @@ const add = (x, y) => x + y;
 const square = x => x * x;
 const addAndSquare = composeRight(add, square);
 addAndSquare(1, 2); // 9
-```
+```

snippets/converge.md

@@ -1,4 +1,7 @@
-### converge
+---
+title: converge
+tags: function,intermediate
+---
 
 Accepts a converging function and a list of branching functions and returns a function that applies each branching function to the arguments and the results of the branching functions are passed as arguments to the converging function.
 
@@ -15,4 +18,4 @@ const average = converge((a, b) => a / b, [
   arr => arr.length
 ]);
 average([1, 2, 3, 4, 5, 6, 7]); // 4
-```
+```

snippets/copyToClipboard.md

@@ -1,4 +1,7 @@
-### copyToClipboard
+---
+title: copyToClipboard
+tags: browser,string,advanced
+---
 
 ⚠️ **NOTICE:** The same functionality can be easily implemented by using the new asynchronous Clipboard API, which is still experimental but should be used in the future instead of this snippet. Find out more about it [here](https://github.com/w3c/clipboard-apis/blob/master/explainer.adoc#writing-to-the-clipboard).
 
@@ -33,4 +36,4 @@ const copyToClipboard = str => {
 
 ```js
 copyToClipboard('Lorem ipsum'); // 'Lorem ipsum' copied to clipboard.
-```
+```

snippets/countBy.md

@@ -1,4 +1,7 @@
-### countBy
+---
+title: countBy
+tags: array,object,intermediate
+---
 
 Groups the elements of an array based on the given function and returns the count of elements in each group.
 
@@ -16,4 +19,4 @@ const countBy = (arr, fn) =>
 ```js
 countBy([6.1, 4.2, 6.3], Math.floor); // {4: 1, 6: 2}
 countBy(['one', 'two', 'three'], 'length'); // {3: 2, 5: 1}
-```
+```

snippets/countOccurrences.md

@@ -1,4 +1,7 @@
-### countOccurrences
+---
+title: countOccurrences
+tags: array,intermediate
+---
 
 Counts the occurrences of a value in an array.
 
@@ -10,4 +13,4 @@ const countOccurrences = (arr, val) => arr.reduce((a, v) => (v === val ? a + 1 :
 
 ```js
 countOccurrences([1, 1, 2, 1, 2, 3], 1); // 3
-```
+```

snippets/counter.md

@@ -1,4 +1,7 @@
-### counter
+---
+title: counter
+tags: browser,advanced
+---
 
 Creates a counter with the specified range, step and duration for the specified selector.
 
@@ -24,4 +27,4 @@ const counter = (selector, start, end, step = 1, duration = 2000) => {
 
 ```js
 counter('#my-id', 1, 1000, 5, 2000); // Creates a 2-second timer for the element with id="my-id"
-```
+```

snippets/createDirIfNotExists.md

@@ -1,4 +1,7 @@
-### createDirIfNotExists
+---
+title: createDirIfNotExists
+tags: node,beginner
+---
 
 Creates a directory, if it does not exist.
 
@@ -11,4 +14,4 @@ const createDirIfNotExists = dir => (!fs.existsSync(dir) ? fs.mkdirSync(dir) : u
 
 ```js
 createDirIfNotExists('test'); // creates the directory 'test', if it doesn't exist
-```
+```

snippets/createElement.md

@@ -1,4 +1,7 @@
-### createElement
+---
+title: createElement
+tags: browser,utility,beginner
+---
 
 Creates an element from a string (without appending it to the document). 
 If the given string contains multiple elements, only the first one will be returned.
@@ -22,4 +25,4 @@ const el = createElement(
   </div>`
 );
 console.log(el.className); // 'container'
-```
+```

snippets/createEventHub.md

@@ -1,4 +1,7 @@
-### createEventHub
+---
+title: createEventHub
+tags: browser,event,advanced
+---
 
 Creates a pub/sub ([publish–subscribe](https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern)) event hub with `emit`, `on`, and `off` methods.
 
@@ -43,4 +46,4 @@ hub.emit('increment'); // `increment` variable is now 1
 
 // Unsubscribe: stop a specific handler from listening to the 'message' event
 hub.off('message', handler);
-```
+```

snippets/currentURL.md

@@ -1,4 +1,7 @@
-### currentURL
+---
+title: currentURL
+tags: browser,url,beginner
+---
 
 Returns the current URL.
 
@@ -10,4 +13,4 @@ const currentURL = () => window.location.href;
 
 ```js
 currentURL(); // 'https://google.com'
-```
+```

snippets/curry.md

@@ -1,4 +1,7 @@
-### curry
+---
+title: curry
+tags: function,recursion,intermediate
+---
 
 Curries a function.
 
@@ -15,4 +18,4 @@ const curry = (fn, arity = fn.length, ...args) =>
 ```js
 curry(Math.pow)(2)(10); // 1024
 curry(Math.min, 3)(10)(50)(2); // 2
-```
+```

snippets/dayOfYear.md

@@ -1,4 +1,7 @@
-### dayOfYear
+---
+title: dayOfYear
+tags: date,beginner
+---
 
 Gets the day of the year from a `Date` object.
 
@@ -12,4 +15,4 @@ const dayOfYear = date =>
 
 ```js
 dayOfYear(new Date()); // 272
-```
+```

snippets/debounce.md

@@ -1,4 +1,7 @@
-### debounce
+---
+title: debounce
+tags: function,intermediate
+---
 
 Creates a debounced function that delays invoking the provided function until at least `ms` milliseconds have elapsed since the last time it was invoked.
 
@@ -23,4 +26,4 @@ window.addEventListener(
     console.log(window.innerHeight);
   }, 250)
 ); // Will log the window dimensions at most every 250ms
-```
+```

snippets/decapitalize.md

@@ -1,4 +1,7 @@
-### decapitalize
+---
+title: decapitalize
+tags: string,array,intermediate
+---
 
 Decapitalizes the first letter of a string.
 
@@ -13,4 +16,4 @@ const decapitalize = ([first, ...rest], upperRest = false) =>
 ```js
 decapitalize('FooBar'); // 'fooBar'
 decapitalize('FooBar', true); // 'fOOBAR'
-```
+```

snippets/deepClone.md

@@ -1,4 +1,7 @@
-### deepClone
+---
+title: deepClone
+tags: object,recursion,intermediate
+---
 
 Creates a deep clone of an object.
 
@@ -23,4 +26,4 @@ const deepClone = obj => {
 ```js
 const a = { foo: 'bar', obj: { a: 1, b: 2 } };
 const b = deepClone(a); // a !== b, a.obj !== b.obj
-```
+```

snippets/deepFlatten.md

@@ -1,4 +1,7 @@
-### deepFlatten
+---
+title: deepFlatten
+tags: array,recursion,intermediate
+---
 
 Deep flattens an array.
 
@@ -12,4 +15,4 @@ const deepFlatten = arr => [].concat(...arr.map(v => (Array.isArray(v) ? deepFla
 
 ```js
 deepFlatten([1, [2], [[3], 4], 5]); // [1,2,3,4,5]
-```
+```

snippets/deepFreeze.md

@@ -1,4 +1,7 @@
-### deepFreeze
+---
+title: deepFreeze
+tags: object,recursion,intermediate
+---
 
 Deep freezes an object.
 
@@ -19,4 +22,4 @@ const o = deepFreeze([1, [2, 3]]);
 
 o[0] = 3; // not allowed
 o[1][0] = 4; // not allowed as well
-```
+```

snippets/deepGet.md

@@ -1,4 +1,7 @@
-### deepGet
+---
+title: deepGet
+tags: object,intermediate
+---
 
 Returns the target value in a nested JSON object, based on the `keys` array.
 
@@ -22,4 +25,4 @@ const data = {
 };
 deepGet(data, ['foo', 'foz', index]); // get 3
 deepGet(data, ['foo', 'bar', 'baz', 8, 'foz']); // null
-```
+```

snippets/deepMapKeys.md

@@ -1,4 +1,7 @@
-### deepMapKeys
+---
+title: deepMapKeys
+tags: object,recursion,advanced
+---
 
 Deep maps an object keys.
 
@@ -49,4 +52,4 @@ const upperKeysObj = deepMapKeys(obj, key => key.toUpperCase());
   }
 }
 */
-```
+```

snippets/defaults.md

@@ -1,4 +1,7 @@
-### defaults
+---
+title: defaults
+tags: object,intermediate
+---
 
 Assigns default values for all properties in an object that are `undefined`.
 
@@ -10,4 +13,4 @@ const defaults = (obj, ...defs) => Object.assign({}, obj, ...defs.reverse(), obj
 
 ```js
 defaults({ a: 1 }, { b: 2 }, { b: 6 }, { a: 3 }); // { a: 1, b: 2 }
-```
+```

snippets/defer.md

@@ -1,4 +1,7 @@
-### defer
+---
+title: defer
+tags: function,intermediate
+---
 
 Defers invoking a function until the current call stack has cleared.
 
@@ -16,4 +19,4 @@ defer(console.log, 'a'), console.log('b'); // logs 'b' then 'a'
 document.querySelector('#someElement').innerHTML = 'Hello';
 longRunningFunction(); // Browser will not update the HTML until this has finished
 defer(longRunningFunction); // Browser will update the HTML then run the function
-```
+```

snippets/degreesToRads.md

@@ -1,4 +1,7 @@
-### degreesToRads
+---
+title: degreesToRads
+tags: math,beginner
+---
 
 Converts an angle from degrees to radians.
 
@@ -10,4 +13,4 @@ const degreesToRads = deg => (deg * Math.PI) / 180.0;
 
 ```js
 degreesToRads(90.0); // ~1.5708
-```
+```

snippets/delay.md

@@ -1,4 +1,7 @@
-### delay
+---
+title: delay
+tags: function,intermediate
+---
 
 Invokes the provided function after `wait` milliseconds.
 
@@ -17,4 +20,4 @@ delay(
   1000,
   'later'
 ); // Logs 'later' after one second.
-```
+```

snippets/detectDeviceType.md

@@ -1,4 +1,7 @@
-### detectDeviceType
+---
+title: detectDeviceType
+tags: browser,intermediate
+---
 
 Detects whether the website is being opened in a mobile device or a desktop/laptop.
 
@@ -13,4 +16,4 @@ const detectDeviceType = () =>
 
 ```js
 detectDeviceType(); // "Mobile" or "Desktop"
-```
+```

snippets/difference.md

@@ -1,4 +1,7 @@
-### difference
+---
+title: difference
+tags: array,math,beginner
+---
 
 Returns the difference between two arrays.
 
@@ -13,4 +16,4 @@ const difference = (a, b) => {
 
 ```js
 difference([1, 2, 3], [1, 2, 4]); // [3]
-```
+```

snippets/differenceBy.md

@@ -1,4 +1,7 @@
-### differenceBy
+---
+title: differenceBy
+tags: array,function,intermediate
+---
 
 Returns the difference between two arrays, after applying the provided function to each array element of both.
 
@@ -14,4 +17,4 @@ const differenceBy = (a, b, fn) => {
 ```js
 differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor); // [1]
 differenceBy([{ x: 2 }, { x: 1 }], [{ x: 1 }], v => v.x); // [2]
-```
+```

snippets/differenceWith.md

@@ -1,4 +1,7 @@
-### differenceWith
+---
+title: differenceWith
+tags: array,function,intermediate
+---
 
 Filters out all values from an array for which the comparator function does not return `true`.
 
@@ -10,4 +13,4 @@ const differenceWith = (arr, val, comp) => arr.filter(a => val.findIndex(b => co
 
 ```js
 differenceWith([1, 1.2, 1.5, 3, 0], [1.9, 3, 0], (a, b) => Math.round(a) === Math.round(b)); // [1, 1.2]
-```
+```

snippets/dig.md

@@ -1,4 +1,7 @@
-### dig
+---
+title: dig
+tags: object,recursion,intermediate
+---
 
 Returns the target value in a nested JSON object, based on the given key.
 
@@ -25,4 +28,4 @@ const data = {
 };
 dig(data, 'level3'); // 'some data'
 dig(data, 'level4'); // undefined
-```
+```

snippets/digitize.md

@@ -1,4 +1,7 @@
-### digitize
+---
+title: digitize
+tags: math,array,beginner
+---
 
 Converts a number to an array of digits.
 
@@ -11,4 +14,4 @@ const digitize = n => [...`${n}`].map(i => parseInt(i));
 
 ```js
 digitize(123); // [1, 2, 3]
-```
+```

snippets/distance.md

@@ -1,4 +1,7 @@
-### distance
+---
+title: distance
+tags: math,beginner
+---
 
 Returns the distance between two points.
 
@@ -10,4 +13,4 @@ const distance = (x0, y0, x1, y1) => Math.hypot(x1 - x0, y1 - y0);
 
 ```js
 distance(1, 1, 2, 3); // 2.23606797749979
-```
+```

snippets/drop.md

@@ -1,4 +1,7 @@
-### drop
+---
+title: drop
+tags: array,beginner
+---
 
 Returns a new array with `n` elements removed from the left.
 
@@ -12,4 +15,4 @@ const drop = (arr, n = 1) => arr.slice(n);
 drop([1, 2, 3]); // [2,3]
 drop([1, 2, 3], 2); // [3]
 drop([1, 2, 3], 42); // []
-```
+```

snippets/dropRight.md

@@ -1,4 +1,7 @@
-### dropRight
+---
+title: dropRight
+tags: array,beginner
+---
 
 Returns a new array with `n` elements removed from the right.
 
@@ -12,4 +15,4 @@ const dropRight = (arr, n = 1) => arr.slice(0, -n);
 dropRight([1, 2, 3]); // [1,2]
 dropRight([1, 2, 3], 2); // [1]
 dropRight([1, 2, 3], 42); // []
-```
+```

snippets/dropRightWhile.md

@@ -1,4 +1,7 @@
-### dropRightWhile
+---
+title: dropRightWhile
+tags: array,function,intermediate
+---
 
 Removes elements from the end of an array until the passed function returns `true`. Returns the remaining elements in the array.
 
@@ -15,4 +18,4 @@ const dropRightWhile = (arr, func) => {
 
 ```js
 dropRightWhile([1, 2, 3, 4], n => n < 3); // [1, 2]
-```
+```

snippets/dropWhile.md

@@ -1,4 +1,7 @@
-### dropWhile
+---
+title: dropWhile
+tags: array,function,intermediate
+---
 
 Removes elements in an array until the passed function returns `true`. Returns the remaining elements in the array.
 
@@ -14,4 +17,4 @@ const dropWhile = (arr, func) => {
 
 ```js
 dropWhile([1, 2, 3, 4], n => n >= 3); // [3,4]
-```
+```

snippets/elementContains.md

@@ -1,4 +1,7 @@
-### elementContains
+---
+title: elementContains
+tags: browser,intermediate
+---
 
 Returns `true` if the `parent` element contains the `child` element, `false` otherwise.
 
@@ -11,4 +14,4 @@ const elementContains = (parent, child) => parent !== child && parent.contains(c
 ```js
 elementContains(document.querySelector('head'), document.querySelector('title')); // true
 elementContains(document.querySelector('body'), document.querySelector('body')); // false
-```
+```

snippets/elementIsVisibleInViewport.md

@@ -1,4 +1,7 @@
-### elementIsVisibleInViewport
+---
+title: elementIsVisibleInViewport
+tags: browser,advanced
+---
 
 Returns `true` if the element specified is visible in the viewport, `false` otherwise.
 
@@ -22,4 +25,4 @@ const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
 // e.g. 100x100 viewport and a 10x10px element at position {top: -1, left: 0, bottom: 9, right: 10}
 elementIsVisibleInViewport(el); // false - (not fully visible)
 elementIsVisibleInViewport(el, true); // true - (partially visible)
-```
+```

snippets/elo.md

@@ -1,4 +1,7 @@
-### elo
+---
+title: elo
+tags: math,array,advanced
+---
 
 Computes the new ratings between two or more opponents using the [Elo rating system](https://en.wikipedia.org/wiki/Elo_rating_system). It takes an array
 of pre-ratings and returns an array containing post-ratings.
@@ -39,4 +42,4 @@ For teams, each rating can adjusted based on own team's average rating vs.
 average rating of opposing team, with the score being added to their
 own individual rating by supplying it as the third argument.
 */
-```
+```

snippets/equals.md

@@ -1,4 +1,7 @@
-### equals
+---
+title: equals
+tags: object,array,type,advanced
+---
 
 Performs a deep comparison between two values to determine if they are equivalent.
 
@@ -21,4 +24,4 @@ const equals = (a, b) => {
 
 ```js
 equals({ a: [2, { e: 3 }], b: [4], c: 'foo' }, { a: [2, { e: 3 }], b: [4], c: 'foo' }); // true
-```
+```

snippets/escapeHTML.md

@@ -1,4 +1,7 @@
-### escapeHTML
+---
+title: escapeHTML
+tags: string,browser,regexp,intermediate
+---
 
 Escapes a string for use in HTML.
 
@@ -21,4 +24,4 @@ const escapeHTML = str =>
 
 ```js
 escapeHTML('<a href="#">Me & you</a>'); // '&lt;a href=&quot;#&quot;&gt;Me &amp; you&lt;/a&gt;'
-```
+```

snippets/escapeRegExp.md

@@ -1,4 +1,7 @@
-### escapeRegExp
+---
+title: escapeRegExp
+tags: string,regexp,intermediate
+---
 
 Escapes a string to use in a regular expression.
 
@@ -10,4 +13,4 @@ const escapeRegExp = str => str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
 
 ```js
 escapeRegExp('(test)'); // \\(test\\)
-```
+```

snippets/everyNth.md

@@ -1,4 +1,7 @@
-### everyNth
+---
+title: everyNth
+tags: array,beginner
+---
 
 Returns every nth element in an array.
 
@@ -10,4 +13,4 @@ const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);
 
 ```js
 everyNth([1, 2, 3, 4, 5, 6], 2); // [ 2, 4, 6 ]
-```
+```

snippets/extendHex.md

@@ -1,4 +1,7 @@
-### extendHex
+---
+title: extendHex
+tags: utility,string,intermediate
+---
 
 Extends a 3-digit color code to a 6-digit color code.
 
@@ -18,4 +21,4 @@ const extendHex = shortHex =>
 ```js
 extendHex('#03f'); // '#0033ff'
 extendHex('05a'); // '#0055aa'
-```
+```

snippets/factorial.md

@@ -1,4 +1,7 @@
-### factorial
+---
+title: factorial
+tags: math,recursion,beginner
+---
 
 Calculates the factorial of a number.
 
@@ -20,4 +23,4 @@ const factorial = n =>
 
 ```js
 factorial(6); // 720
-```
+```

snippets/fibonacci.md

@@ -1,4 +1,7 @@
-### fibonacci
+---
+title: fibonacci
+tags: math,array,beginner
+---
 
 Generates an array, containing the Fibonacci sequence, up until the nth term.
 
@@ -15,4 +18,4 @@ const fibonacci = n =>
 
 ```js
 fibonacci(6); // [0, 1, 1, 2, 3, 5]
-```
+```

snippets/filterFalsy.md

@@ -1,13 +1,16 @@
-### filterFalsy
-
+---
+title: filterFalsy
+tags: array,beginner
+---
+
 Filters out the falsy values in an array.
 
-Use `Array.prototype.filter()` to get an array containing only truthy values.
-
+Use `Array.prototype.filter()` to get an array containing only truthy values.
+
 ```js
 const filterFalsy = arr => arr.filter(Boolean);
-```
-
+```
+
 ```js
 filterFalsy(['', true, {}, false, 'sample', 1, 0]); // [true, {}, 'sample', 1]
-```
+```

snippets/filterNonUnique.md

@@ -1,4 +1,7 @@
-### filterNonUnique
+---
+title: filterNonUnique
+tags: array,beginner
+---
 
 Filters out the non-unique values in an array.
 
@@ -10,4 +13,4 @@ const filterNonUnique = arr => arr.filter(i => arr.indexOf(i) === arr.lastIndexO
 
 ```js
 filterNonUnique([1, 2, 2, 3, 4, 4, 5]); // [1, 3, 5]
-```
+```

snippets/filterNonUniqueBy.md

@@ -1,4 +1,7 @@
-### filterNonUniqueBy
+---
+title: filterNonUniqueBy
+tags: array,function,intermediate
+---
 
 Filters out the non-unique values in an array, based on a provided comparator function.
 
@@ -21,4 +24,4 @@ filterNonUniqueBy(
   ],
   (a, b) => a.id == b.id
 ); // [ { id: 2, value: 'c' } ]
-```
+```

snippets/findKey.md

@@ -1,4 +1,7 @@
-### findKey
+---
+title: findKey
+tags: object,function,intermediate
+---
 
 Returns the first key that satisfies the provided testing function. Otherwise `undefined` is returned.
 
@@ -17,4 +20,4 @@ findKey(
   },
   o => o['active']
 ); // 'barney'
-```
+```

snippets/findLast.md

@@ -1,4 +1,7 @@
-### findLast
+---
+title: findLast
+tags: array,beginner
+---
 
 Returns the last element for which the provided function returns a truthy value.
 
@@ -10,4 +13,4 @@ const findLast = (arr, fn) => arr.filter(fn).pop();
 
 ```js
 findLast([1, 2, 3, 4], n => n % 2 === 1); // 3
-```
+```

snippets/findLastIndex.md

@@ -1,4 +1,7 @@
-### findLastIndex
+---
+title: findLastIndex
+tags: array,function,intermediate
+---
 
 Returns the index of the last element for which the provided function returns a truthy value.
 
@@ -17,4 +20,4 @@ const findLastIndex = (arr, fn) =>
 ```js
 findLastIndex([1, 2, 3, 4], n => n % 2 === 1); // 2 (index of the value 3)
 findLastIndex([1, 2, 3, 4], n => n === 5); // -1 (default value when not found)
-```
+```

snippets/findLastKey.md

@@ -1,4 +1,7 @@
-### findLastKey
+---
+title: findLastKey
+tags: object,function,intermediate
+---
 
 Returns the last key that satisfies the provided testing function.
 Otherwise `undefined` is returned.
@@ -22,4 +25,4 @@ findLastKey(
   },
   o => o['active']
 ); // 'pebbles'
-```
+```

snippets/flatten.md

@@ -1,4 +1,7 @@
-### flatten
+---
+title: flatten
+tags: array,intermediate
+---
 
 Flattens an array up to the specified depth.
 
@@ -15,4 +18,4 @@ const flatten = (arr, depth = 1) =>
 ```js
 flatten([1, [2], 3, 4]); // [1, 2, 3, 4]
 flatten([1, [2, [3, [4, 5], 6], 7], 8], 2); // [1, 2, 3, [4, 5], 6, 7, 8]
-```
+```