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adds deepMapKeys snippet

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This commit is contained in:
Ilia Aphtsiauri
2018-11-29 15:22:53 +02:00
parent 932f9f87ed
commit 56e7689a97
7 changed files with 2647 additions and 2592 deletions
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2
coverage/coverage-final.json
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5008
coverage/lcov.info
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70
package-lock.json generated
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@ -5250,48 +5250,6 @@
}
}
},
"jest-tap-reporter": {
"version": "1.9.0",
"resolved": "https://registry.npmjs.org/jest-tap-reporter/-/jest-tap-reporter-1.9.0.tgz",
"integrity": "sha512-KBNkyWWDO0sGc593H04+QJuMHm9WEwe/0RnMD5ke2spA7nNMQao3ktU34brfOBKk7vNn5EbGIr2pODxNQo+bNA==",
"dev": true,
"requires": {
"@babel/code-frame": "7.0.0-beta.36",
"chalk": "2.4.1",
"string.prototype.padend": "3.0.0",
"string.prototype.padstart": "3.0.0",
"strip-ansi": "4.0.0",
"utf8-bar": "0.1.0"
},
"dependencies": {
"@babel/code-frame": {
"version": "7.0.0-beta.36",
"resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0-beta.36.tgz",
"integrity": "sha512-sW77BFwJ48YvQp3Gzz5xtAUiXuYOL2aMJKDwiaY3OcvdqBFurtYfOpSa4QrNyDxmOGRFSYzUpabU2m9QrlWE7w==",
"dev": true,
"requires": {
"chalk": "2.4.1",
"esutils": "2.0.2",
"js-tokens": "3.0.2"
}
},
"ansi-regex": {
"version": "3.0.0",
"resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
"integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
"dev": true
},
"strip-ansi": {
"version": "4.0.0",
"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
"integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
"dev": true,
"requires": {
"ansi-regex": "3.0.0"
}
}
}
},
"jest-util": {
"version": "23.4.0",
"resolved": "https://registry.npmjs.org/jest-util/-/jest-util-23.4.0.tgz",
@ -7943,28 +7901,6 @@
}
}
},
"string.prototype.padend": {
"version": "3.0.0",
"resolved": "https://registry.npmjs.org/string.prototype.padend/-/string.prototype.padend-3.0.0.tgz",
"integrity": "sha1-86rvfBcZ8XDF6rHDK/eA2W4h8vA=",
"dev": true,
"requires": {
"define-properties": "1.1.2",
"es-abstract": "1.11.0",
"function-bind": "1.1.1"
}
},
"string.prototype.padstart": {
"version": "3.0.0",
"resolved": "https://registry.npmjs.org/string.prototype.padstart/-/string.prototype.padstart-3.0.0.tgz",
"integrity": "sha1-W8+tOfRkm7LQMSkuGbzwtRDUskI=",
"dev": true,
"requires": {
"define-properties": "1.1.2",
"es-abstract": "1.11.0",
"function-bind": "1.1.1"
}
},
"string_decoder": {
"version": "1.0.3",
"resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
@ -8407,12 +8343,6 @@
"integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==",
"dev": true
},
"utf8-bar": {
"version": "0.1.0",
"resolved": "https://registry.npmjs.org/utf8-bar/-/utf8-bar-0.1.0.tgz",
"integrity": "sha512-AU+KwhlIChF/Su3d/tBrnhtDS6Bd1YWXeRc/If2/XEV/3f8LTSGJQQVONqUI6fwwTrkT5GKbdYxm7qQD7nEcCQ==",
"dev": true
},
"util-deprecate": {
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",

59
snippets/deepMapKeys.md Normal file
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@ -0,0 +1,59 @@
### deepMapKeys
Deep maps an object keys.
Creates an object with the same values as the provided object and keys generated by running the provided function for each key.
Use Object.keys(obj) to iterate over the object's keys. Use Array.prototype.reduce() to create a new object with the same values and mapped keys using fn.
```js
const deepMapKeys = (obj, f) => (
Array.isArray(obj)
? obj.map(val => deepMapKeys(val, f))
: (typeof obj === 'object')
? Object.keys(obj).reduce((acc, current) => {
const val = obj[current];
acc[f(current)] = (val !== null && typeof val === 'object')
? deepMapKeys(val, f)
: acc[f(current)] = val;
return acc;
}, {})
: obj
);
```
```js
'use strict';
const obj = {
foo:'1',
isnull:null,
nested:{
bar:'1',
child:{
withArray:[
{
grandChild:[ 'hello' ]
}
]
}
}
}
const upperKeysObj = deepMapKeys(obj, (key) => key.toUpperCase());
/*
Formatted JSON Data
{
"FOO":"1",
"ISNULL":null,
"NESTED":{
"BAR":"1",
"CHILD":{
"WITHARRAY":[
{
"GRANDCHILD":[ 'hello' ]
}
]
}
}
}
*/
```

1
tag_database
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@ -50,6 +50,7 @@ decapitalize:string,array,intermediate
deepClone:object,recursion,intermediate
deepFlatten:array,recursion,intermediate
deepFreeze:object,recursion,intermediate
deepMapKeys:object,recursion
defaults:object,intermediate
defer:function,intermediate
degreesToRads:math,beginner

67
test/_30s.js
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@ -81,7 +81,7 @@ const bindAll = (obj, ...fns) =>
fns.forEach(
fn => (
(f = obj[fn]),
(obj[fn] = function() {
(obj[fn] = function () {
return f.apply(obj);
})
)
@ -204,7 +204,7 @@ const dayOfYear = date =>
Math.floor((date - new Date(date.getFullYear(), 0, 0)) / 1000 / 60 / 60 / 24);
const debounce = (fn, ms = 0) => {
let timeoutId;
return function(...args) {
return function (...args) {
clearTimeout(timeoutId);
timeoutId = setTimeout(() => fn.apply(this, args), ms);
};
@ -224,6 +224,19 @@ const deepFreeze = obj =>
prop =>
!(obj[prop] instanceof Object) || Object.isFrozen(obj[prop]) ? null : deepFreeze(obj[prop])
) || Object.freeze(obj);
const deepMapKeys = (obj, f) => (
Array.isArray(obj)
? obj.map(val => deepMapKeys(val, f))
: (typeof obj === 'object')
? Object.keys(obj).reduce((acc, current) => {
const val = obj[current];
acc[f(current)] = (val !== null && typeof val === 'object')
? deepMapKeys(val, f)
: acc[f(current)] = val;
return acc;
}, {})
: obj
);
const defaults = (obj, ...defs) => Object.assign({}, obj, ...defs.reverse(), obj);
const defer = (fn, ...args) => setTimeout(fn, 1, ...args);
const degreesToRads = deg => (deg * Math.PI) / 180.0;
@ -266,7 +279,7 @@ const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
const { innerHeight, innerWidth } = window;
return partiallyVisible
? ((top > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
: top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
};
const elo = ([...ratings], kFactor = 32, selfRating) => {
@ -698,7 +711,7 @@ const median = arr => {
};
const memoize = fn => {
const cache = new Map();
const cached = function(val) {
const cached = function (val) {
return cache.has(val) ? cache.get(val) : cache.set(val, fn.call(this, val)) && cache.get(val);
};
cached.cache = cache;
@ -784,7 +797,7 @@ const onUserInputChange = callback => {
};
const once = fn => {
let called = false;
return function(...args) {
return function (...args) {
if (called) return;
called = true;
return fn.apply(this, args);
@ -1087,7 +1100,7 @@ const standardDeviation = (arr, usePopulation = false) => {
const mean = arr.reduce((acc, val) => acc + val, 0) / arr.length;
return Math.sqrt(
arr.reduce((acc, val) => acc.concat((val - mean) ** 2), []).reduce((acc, val) => acc + val, 0) /
(arr.length - (usePopulation ? 0 : 1))
(arr.length - (usePopulation ? 0 : 1))
);
};
const stringPermutations = str => {
@ -1134,7 +1147,7 @@ const takeWhile = (arr, func) => {
};
const throttle = (fn, wait) => {
let inThrottle, lastFn, lastTime;
return function() {
return function () {
const context = this,
args = arguments;
if (!inThrottle) {
@ -1143,7 +1156,7 @@ const throttle = (fn, wait) => {
inThrottle = true;
} else {
clearTimeout(lastFn);
lastFn = setTimeout(function() {
lastFn = setTimeout(function () {
if (Date.now() - lastTime >= wait) {
fn.apply(context, args);
lastTime = Date.now();
@ -1160,7 +1173,7 @@ const timeTaken = callback => {
};
const times = (n, fn, context = undefined) => {
let i = 0;
while (fn.call(context, i) !== false && ++i < n) {}
while (fn.call(context, i) !== false && ++i < n) { }
};
const toCamelCase = str => {
let s =
@ -1250,9 +1263,9 @@ const unflattenObject = obj =>
acc,
JSON.parse(
'{' +
keys.map((v, i) => (i !== keys.length - 1 ? `"${v}":{` : `"${v}":`)).join('') +
obj[k] +
'}'.repeat(keys.length)
keys.map((v, i) => (i !== keys.length - 1 ? `"${v}":{` : `"${v}":`)).join('') +
obj[k] +
'}'.repeat(keys.length)
)
);
} else acc[k] = obj[k];
@ -1367,7 +1380,7 @@ const factors = (num, primes = false) => {
}, []);
return primes ? array.filter(isPrime) : array;
};
const fahrenheitToCelsius = degrees => (degrees - 32) * 5/9;
const fahrenheitToCelsius = degrees => (degrees - 32) * 5 / 9;
const fibonacciCountUntilNum = num =>
Math.ceil(Math.log(num * Math.sqrt(5) + 1 / 2) / Math.log((Math.sqrt(5) + 1) / 2));
const fibonacciUntilNum = num => {
@ -1378,9 +1391,9 @@ const fibonacciUntilNum = num => {
);
};
const heronArea = (side_a, side_b, side_c) => {
const p = (side_a + side_b + side_c) / 2
return Math.sqrt(p * (p-side_a) * (p-side_b) * (p-side_c))
};
const p = (side_a + side_b + side_c) / 2
return Math.sqrt(p * (p - side_a) * (p - side_b) * (p - side_c))
};
const howManyTimes = (num, divisor) => {
if (divisor === 1 || divisor === -1) return Infinity;
if (divisor === 0) return 0;
@ -1401,7 +1414,7 @@ const httpDelete = (url, callback, err = console.error) => {
const httpPut = (url, data, callback, err = console.error) => {
const request = new XMLHttpRequest();
request.open("PUT", url, true);
request.setRequestHeader('Content-type','application/json; charset=utf-8');
request.setRequestHeader('Content-type', 'application/json; charset=utf-8');
request.onload = () => callback(request);
request.onerror = () => err(request);
request.send(data);
@ -1412,11 +1425,11 @@ const isArmstrongNumber = digits =>
);
const isSimilar = (pattern, str) =>
[...str].reduce(
(matchIndex, char) =>
char.toLowerCase() === (pattern[matchIndex] || '').toLowerCase()
? matchIndex + 1
: matchIndex,
0
(matchIndex, char) =>
char.toLowerCase() === (pattern[matchIndex] || '').toLowerCase()
? matchIndex + 1
: matchIndex,
0
) === pattern.length;
const kmphToMph = (kmph) => 0.621371192 * kmph;
const levenshteinDistance = (string1, string2) => {
@ -1449,10 +1462,10 @@ const quickSort = ([n, ...nums], desc) =>
isNaN(n)
? []
: [
...quickSort(nums.filter(v => (desc ? v > n : v <= n)), desc),
n,
...quickSort(nums.filter(v => (!desc ? v > n : v <= n)), desc)
];
...quickSort(nums.filter(v => (desc ? v > n : v <= n)), desc),
n,
...quickSort(nums.filter(v => (!desc ? v > n : v <= n)), desc)
];
const removeVowels = (str, repl = '') => str.replace(/[aeiou]/gi, repl);
const solveRPN = rpn => {
const OPERATORS = {
@ -1490,4 +1503,4 @@ const speechSynthesis = message => {
const squareSum = (...args) => args.reduce((squareSum, number) => squareSum + Math.pow(number, 2), 0);
module.exports = {CSVToArray,CSVToJSON,JSONToFile,JSONtoCSV,RGBToHex,URLJoin,UUIDGeneratorBrowser,UUIDGeneratorNode,all,allEqual,any,approximatelyEqual,arrayToCSV,arrayToHtmlList,ary,atob,attempt,average,averageBy,bifurcate,bifurcateBy,bind,bindAll,bindKey,binomialCoefficient,bottomVisible,btoa,byteSize,call,capitalize,capitalizeEveryWord,castArray,chainAsync,chunk,clampNumber,cloneRegExp,coalesce,coalesceFactory,collectInto,colorize,compact,compose,composeRight,converge,copyToClipboard,countBy,countOccurrences,counter,createElement,createEventHub,currentURL,curry,dayOfYear,debounce,decapitalize,deepClone,deepFlatten,deepFreeze,defaults,defer,degreesToRads,delay,detectDeviceType,difference,differenceBy,differenceWith,dig,digitize,distance,drop,dropRight,dropRightWhile,dropWhile,elementContains,elementIsVisibleInViewport,elo,equals,escapeHTML,escapeRegExp,everyNth,extendHex,factorial,fibonacci,filterNonUnique,filterNonUniqueBy,findKey,findLast,findLastIndex,findLastKey,flatten,flattenObject,flip,forEachRight,forOwn,forOwnRight,formatDuration,fromCamelCase,functionName,functions,gcd,geometricProgression,get,getColonTimeFromDate,getDaysDiffBetweenDates,getImages,getMeridiemSuffixOfInteger,getScrollPosition,getStyle,getType,getURLParameters,groupBy,hammingDistance,hasClass,hasFlags,hashBrowser,hashNode,head,hexToRGB,hide,httpGet,httpPost,httpsRedirect,hz,inRange,indentString,indexOfAll,initial,initialize2DArray,initializeArrayWithRange,initializeArrayWithRangeRight,initializeArrayWithValues,initializeNDArray,insertAfter,insertBefore,intersection,intersectionBy,intersectionWith,invertKeyValues,is,isAbsoluteURL,isAfterDate,isAnagram,isArrayLike,isBeforeDate,isBoolean,isBrowser,isBrowserTabFocused,isDivisible,isDuplexStream,isEmpty,isEven,isFunction,isLowerCase,isNegativeZero,isNil,isNull,isNumber,isObject,isObjectLike,isPlainObject,isPrime,isPrimitive,isPromiseLike,isReadableStream,isSameDate,isSorted,isStream,isString,isSymbol,isTravisCI,isUndefined,isUpperCase,isValidJSON,isWritableStream,join,last,lcm,longestItem,lowercaseKeys,luhnCheck,mapKeys,mapObject,mapString,mapValues,mask,matches,matchesWith,maxBy,maxDate,maxN,median,memoize,merge,minBy,minDate,minN,mostPerformant,negate,nest,nodeListToArray,none,nthArg,nthElement,objectFromPairs,objectToPairs,observeMutations,off,offset,omit,omitBy,on,onUserInputChange,once,orderBy,over,overArgs,pad,palindrome,parseCookie,partial,partialRight,partition,percentile,permutations,pick,pickBy,pipeAsyncFunctions,pipeFunctions,pluralize,powerset,prefix,prettyBytes,primes,promisify,pull,pullAtIndex,pullAtValue,pullBy,radsToDegrees,randomHexColorCode,randomIntArrayInRange,randomIntegerInRange,randomNumberInRange,readFileLines,rearg,recordAnimationFrames,redirect,reduceSuccessive,reduceWhich,reducedFilter,reject,remove,removeNonASCII,renameKeys,reverseString,round,runAsync,runPromisesInSeries,sample,sampleSize,scrollToTop,sdbm,serializeCookie,setStyle,shallowClone,shank,show,shuffle,similarity,size,sleep,smoothScroll,sortCharactersInString,sortedIndex,sortedIndexBy,sortedLastIndex,sortedLastIndexBy,splitLines,spreadOver,stableSort,standardDeviation,stringPermutations,stripHTMLTags,sum,sumBy,sumPower,symmetricDifference,symmetricDifferenceBy,symmetricDifferenceWith,tail,take,takeRight,takeRightWhile,takeWhile,throttle,timeTaken,times,toCamelCase,toCurrency,toDecimalMark,toHash,toKebabCase,toOrdinalSuffix,toSafeInteger,toSnakeCase,toTitleCase,toggleClass,tomorrow,transform,triggerEvent,truncateString,truthCheckCollection,unary,uncurry,unescapeHTML,unflattenObject,unfold,union,unionBy,unionWith,uniqueElements,uniqueElementsBy,uniqueElementsByRight,uniqueSymmetricDifference,untildify,unzip,unzipWith,validateNumber,when,without,words,xProd,yesNo,zip,zipObject,zipWith,JSONToDate,binarySearch,celsiusToFahrenheit,cleanObj,collatz,countVowels,factors,fahrenheitToCelsius,fibonacciCountUntilNum,fibonacciUntilNum,heronArea,howManyTimes,httpDelete,httpPut,isArmstrongNumber,isSimilar,kmphToMph,levenshteinDistance,mphToKmph,pipeLog,quickSort,removeVowels,solveRPN,speechSynthesis,squareSum}
module.exports = { CSVToArray, CSVToJSON, JSONToFile, JSONtoCSV, RGBToHex, URLJoin, UUIDGeneratorBrowser, UUIDGeneratorNode, all, allEqual, any, approximatelyEqual, arrayToCSV, arrayToHtmlList, ary, atob, attempt, average, averageBy, bifurcate, bifurcateBy, bind, bindAll, bindKey, binomialCoefficient, bottomVisible, btoa, byteSize, call, capitalize, capitalizeEveryWord, castArray, chainAsync, chunk, clampNumber, cloneRegExp, coalesce, coalesceFactory, collectInto, colorize, compact, compose, composeRight, converge, copyToClipboard, countBy, countOccurrences, counter, createElement, createEventHub, currentURL, curry, dayOfYear, debounce, decapitalize, deepClone, deepFlatten, deepFreeze, deepMapKeys, defaults, defer, degreesToRads, delay, detectDeviceType, difference, differenceBy, differenceWith, dig, digitize, distance, drop, dropRight, dropRightWhile, dropWhile, elementContains, elementIsVisibleInViewport, elo, equals, escapeHTML, escapeRegExp, everyNth, extendHex, factorial, fibonacci, filterNonUnique, filterNonUniqueBy, findKey, findLast, findLastIndex, findLastKey, flatten, flattenObject, flip, forEachRight, forOwn, forOwnRight, formatDuration, fromCamelCase, functionName, functions, gcd, geometricProgression, get, getColonTimeFromDate, getDaysDiffBetweenDates, getImages, getMeridiemSuffixOfInteger, getScrollPosition, getStyle, getType, getURLParameters, groupBy, hammingDistance, hasClass, hasFlags, hashBrowser, hashNode, head, hexToRGB, hide, httpGet, httpPost, httpsRedirect, hz, inRange, indentString, indexOfAll, initial, initialize2DArray, initializeArrayWithRange, initializeArrayWithRangeRight, initializeArrayWithValues, initializeNDArray, insertAfter, insertBefore, intersection, intersectionBy, intersectionWith, invertKeyValues, is, isAbsoluteURL, isAfterDate, isAnagram, isArrayLike, isBeforeDate, isBoolean, isBrowser, isBrowserTabFocused, isDivisible, isDuplexStream, isEmpty, isEven, isFunction, isLowerCase, isNegativeZero, isNil, isNull, isNumber, isObject, isObjectLike, isPlainObject, isPrime, isPrimitive, isPromiseLike, isReadableStream, isSameDate, isSorted, isStream, isString, isSymbol, isTravisCI, isUndefined, isUpperCase, isValidJSON, isWritableStream, join, last, lcm, longestItem, lowercaseKeys, luhnCheck, mapKeys, mapObject, mapString, mapValues, mask, matches, matchesWith, maxBy, maxDate, maxN, median, memoize, merge, minBy, minDate, minN, mostPerformant, negate, nest, nodeListToArray, none, nthArg, nthElement, objectFromPairs, objectToPairs, observeMutations, off, offset, omit, omitBy, on, onUserInputChange, once, orderBy, over, overArgs, pad, palindrome, parseCookie, partial, partialRight, partition, percentile, permutations, pick, pickBy, pipeAsyncFunctions, pipeFunctions, pluralize, powerset, prefix, prettyBytes, primes, promisify, pull, pullAtIndex, pullAtValue, pullBy, radsToDegrees, randomHexColorCode, randomIntArrayInRange, randomIntegerInRange, randomNumberInRange, readFileLines, rearg, recordAnimationFrames, redirect, reduceSuccessive, reduceWhich, reducedFilter, reject, remove, removeNonASCII, renameKeys, reverseString, round, runAsync, runPromisesInSeries, sample, sampleSize, scrollToTop, sdbm, serializeCookie, setStyle, shallowClone, shank, show, shuffle, similarity, size, sleep, smoothScroll, sortCharactersInString, sortedIndex, sortedIndexBy, sortedLastIndex, sortedLastIndexBy, splitLines, spreadOver, stableSort, standardDeviation, stringPermutations, stripHTMLTags, sum, sumBy, sumPower, symmetricDifference, symmetricDifferenceBy, symmetricDifferenceWith, tail, take, takeRight, takeRightWhile, takeWhile, throttle, timeTaken, times, toCamelCase, toCurrency, toDecimalMark, toHash, toKebabCase, toOrdinalSuffix, toSafeInteger, toSnakeCase, toTitleCase, toggleClass, tomorrow, transform, triggerEvent, truncateString, truthCheckCollection, unary, uncurry, unescapeHTML, unflattenObject, unfold, union, unionBy, unionWith, uniqueElements, uniqueElementsBy, uniqueElementsByRight, uniqueSymmetricDifference, untildify, unzip, unzipWith, validateNumber, when, without, words, xProd, yesNo, zip, zipObject, zipWith, JSONToDate, binarySearch, celsiusToFahrenheit, cleanObj, collatz, countVowels, factors, fahrenheitToCelsius, fibonacciCountUntilNum, fibonacciUntilNum, heronArea, howManyTimes, httpDelete, httpPut, isArmstrongNumber, isSimilar, kmphToMph, levenshteinDistance, mphToKmph, pipeLog, quickSort, removeVowels, solveRPN, speechSynthesis, squareSum }

32
test/deepMapKeys.test.js Normal file
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@ -0,0 +1,32 @@
const expect = require('expect');
const { deepMapKeys, toCamelCase } = require('./_30s.js');
test('deepMapKeys is a Function', () => {
expect(deepMapKeys).toBeInstanceOf(Function);
});
test('Deep maps object keys', () => {
const obj = {
'foo_bar': 'hello',
'deep_child': {
'child_array': ['hello'],
'child_object_array': [
{ 'hola_hello': 'Gamarjoba' }
]
}
};
const expected = {
fooBar: 'hello',
deepChild: {
childArray: ['hello'],
childObjectArray: [
{
holaHello: 'Gamarjoba'
}
]
}
};
const camleCaseKeys = k => toCamelCase(k);
expect(deepMapKeys(obj, camleCaseKeys)).toEqual(expected);
});