@livechat/data-utils - npm Package Compare versions

Comparing version 0.2.3 to 0.2.4

dist/data-utils.es.js

@@ -31,2 +31,18 @@ function add(first, second) {
 
+function flatMap(iteratee, arr) {
+	var _ref;
+
+	return (_ref = []).concat.apply(_ref, arr.map(iteratee));
+}
+
+function chain(fn, listOrFn) {
+	if (typeof listOrFn === 'function') {
+		return function (list) {
+			return fn(listOrFn(list))(list);
+		};
+	}
+
+	return flatMap(fn, listOrFn);
+}
+
 var isArray = Array.isArray;
@@ -44,5 +60,5 @@
 
-function mapValues(iteratee, obj) {
+function mapValues(mapper, obj) {
 	return Object.keys(obj).reduce(function (acc, key) {
-		acc[key] = iteratee(obj[key]);
+		acc[key] = mapper(obj[key]);
 		return acc;
@@ -64,12 +80,70 @@ }, {});
 
-function camelCase(text) {
-	return text.replace(/^[_.\- ]+/, '').toLowerCase().replace(/[_.\- ]+(\w|$)/g, function (__, p1) {
+// slightly simplified version of https://github.com/sindresorhus/camelcase/blob/a526ef0399f9a1310eaacafa0ae4a69da4a2f1ad/index.js
+// TODO: possibly could be rewritten using short-ish regexp
+
+var preserveCamelCase = function preserveCamelCase(input) {
+	var text = input;
+	var isLastCharLower = false;
+	var isLastCharUpper = false;
+	var isLastLastCharUpper = false;
+
+	for (var index = 0; index < text.length; index++) {
+		var char = text[index];
+
+		if (isLastCharLower && /[a-zA-Z]/.test(char) && char.toUpperCase() === char) {
+			text = text.slice(0, index) + '-' + text.slice(index);
+			isLastCharLower = false;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = true;
+			index++;
+		} else if (isLastCharUpper && isLastLastCharUpper && /[a-zA-Z]/.test(char) && char.toLowerCase() === char) {
+			text = text.slice(0, index - 1) + '-' + text.slice(index - 1);
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = false;
+			isLastCharLower = true;
+		} else {
+			isLastCharLower = char.toLowerCase() === char;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = char.toUpperCase() === char;
+		}
+	}
+
+	return text;
+};
+
+function camelCase(input) {
+	var text = input.trim();
+
+	if (text.length === 0) {
+		return '';
+	}
+
+	if (text.length === 1) {
+		return text.toLowerCase();
+	}
+
+	if (/^[a-z\d]+$/.test(text)) {
+		return text;
+	}
+
+	var hasUpperCase = text !== text.toLowerCase();
+
+	if (hasUpperCase) {
+		text = preserveCamelCase(text);
+	}
+
+	text = text.replace(/^[_.\- ]+/, '').toLowerCase().replace(/[_.\- ]+(\w|$)/g, function (match, p1) {
 		return p1.toUpperCase();
 	});
+
+	return text;
 }
 
 function compact(collection) {
-	return isArray(collection) ? collection.filter(Boolean) : Object.keys(collection).reduce(function (result, key) {
-		if (collection[key]) {
-			result[key] = collection[key];
+	return isArray(collection) ? collection.filter(function (value) {
+		return value !== null && value !== undefined;
+	}) : Object.keys(collection).reduce(function (result, key) {
+		var value = collection[key];
+		if (value !== null && value !== undefined) {
+			result[key] = value;
 		}
@@ -92,2 +166,29 @@ return result;
 
+function debounce(ms, fn) {
+	var timeoutId = void 0;
+
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		clearTimeout(timeoutId);
+		timeoutId = setTimeout.apply(undefined, [fn, ms].concat(args));
+	};
+}
+
+function isNil(value) {
+	return value === null || value === undefined;
+}
+
+function defaultTo(defaultValue) {
+	return function (value) {
+		return isNil(value) ? defaultValue : value;
+	};
+}
+
+function drop(count, arr) {
+	return arr.slice(count);
+}
+
 function dropRight(count, arr) {
@@ -97,2 +198,6 @@ return arr.slice(0, -count);
 
+function ensureArray(maybeArr) {
+	return isArray(maybeArr) ? maybeArr : [maybeArr];
+}
+
 // eslint-disable-next-line consistent-return
@@ -119,2 +224,9 @@ function find(predicate, arr) {
 // eslint-disable-next-line consistent-return
+function findKey(predicate, obj) {
+	return find(function (key) {
+		return predicate(obj[key]);
+	}, Object.keys(obj));
+}
+
+// eslint-disable-next-line consistent-return
 function findLast(predicate, arr) {
@@ -142,8 +254,2 @@ for (var index = arr.length - 1; index >= 0; index--) {
 
-function flatMap(iteratee, arr) {
-	var _ref;
-
-	return (_ref = []).concat.apply(_ref, arr.map(iteratee));
-}
-
 // eslint-disable-next-line lodash-fp/prefer-identity
@@ -292,16 +398,13 @@ function identity(value) {
 
-function memoize(func) {
-	var keys = [];
-	var values = [];
+function memoizeWith(keyResolver, func) {
+	var cache = {};
 	return function () {
-		var key = arguments.length <= 0 ? undefined : arguments[0];
-		var index = keys.indexOf(key);
+		var key = keyResolver.apply(undefined, arguments);
 
-		if (index !== -1) {
-			return values[index];
+		if (hasOwn(key, cache)) {
+			return cache[key];
 		}
 
 		var value = func.apply(undefined, arguments);
-		keys.push(key);
-		values.push(value);
+		cache[key] = value;
 		return value;
@@ -311,2 +414,6 @@ };
 
+function memoize(func) {
+	return memoizeWith(identity, func);
+}
+
 function memoizeOne(fn) {
@@ -381,2 +488,31 @@ var called = false;
 
+function over(fns) {
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		return fns.map(function (fn) {
+			return fn.apply(undefined, args);
+		});
+	};
+}
+
+function takeLast(count, arr) {
+	return arr.slice(-count);
+}
+
+function overArgs(fn, transformers) {
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		var transformed = transformers.map(function (transform, index) {
+			return transform(args[index]);
+		});
+		return args.length > transformed.length ? fn.apply(undefined, transformed.concat(takeLast(args.length - transformed.length, args))) : fn.apply(undefined, transformed);
+	};
+}
+
 function pick(props, obj) {
@@ -428,2 +564,24 @@ return props.reduce(function (acc, prop) {
 
+// based on https://github.com/lukeed/dset/blob/f8ce2f65d4adae7842492eb519a7e55de9abdf38/src/index.js
+
+function set$1(_keys, val, input) {
+	var keys = _keys.split ? _keys.split('.') : _keys;
+	var length = keys.length;
+	// TODO: we should clone as we go instead of doing a deep copy upfront
+	var obj = cloneDeep(input);
+	var pointer = obj;
+	for (var index = 0; index < length; ++index) {
+		var pointerValue = pointer[keys[index]];
+		if (index === length - 1) {
+			pointer = pointer[keys[index]] = val;
+			// eslint-disable-next-line eqeqeq
+		} else if (pointerValue == null) {
+			pointer = pointer[keys[index]] = {};
+		} else {
+			pointer = pointer[keys[index]] = pointerValue;
+		}
+	}
+	return obj;
+}
+
 // https://github.com/reactjs/react-redux/blob/5d792a283554cff3d2f54fad1be1f79cbcab33fe/src/utils/shallowEqual.js
@@ -460,2 +618,19 @@
 
+function sliceDiff(slice, obj) {
+	var picked = pickByIndexed(function (value, key) {
+		return value !== obj[key];
+	}, slice);
+	return isEmpty(picked) ? null : picked;
+}
+
+// TODO: this could be written a lot better
+function snakeCase(str) {
+	var snakeCased = str.replace(/[A-Z]|([\-_ ]+)/g, function (match) {
+		var code = match.charCodeAt(0);
+		var upperCased = code > 64 && code < 91;
+		return upperCased ? '_' + match.toLowerCase() : '_';
+	});
+	return snakeCased[0] === '_' ? snakeCased.substr(1) : snakeCased;
+}
+
 function splitAt(splitPoint, arr) {
@@ -486,2 +661,8 @@ // TODO first item from the tuple could be replaced by dropRight
 
+function spread(fn) {
+	return function (args) {
+		return fn.apply(undefined, args);
+	};
+}
+
 function sum(numbers) {
@@ -491,2 +672,6 @@ return numbers.reduce(add, 0);
 
+function take(count, arr) {
+	return arr.slice(0, count);
+}
+
 function takeRightWhileFrom(predicate, startIndex, arr) {
@@ -501,8 +686,7 @@ var endIndex = findLastIndexFrom(function (element) {
 	var lastCall = Date.now() - 2 * ms;
-	var result = void 0;
-	var trailing = void 0;
+	var trailingId = void 0;
 
 	var invoke = function invoke() {
 		lastCall = Date.now();
-		return result = fn.apply(undefined, arguments);
+		fn.apply(undefined, arguments);
 	};
@@ -518,9 +702,8 @@
 		if (now - lastCall >= ms) {
-			return invoke.apply(undefined, args);
+			invoke.apply(undefined, args);
+			return;
 		}
 
-		clearTimeout(trailing);
-		trailing = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
-
-		return result;
+		clearTimeout(trailingId);
+		trailingId = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
 	};
@@ -535,2 +718,27 @@ }
 
+function trailingThrottle(ms, fn) {
+	var lastCall = Date.now() - 2 * ms;
+	var trailingId = void 0;
+
+	var invoke = function invoke() {
+		lastCall = Date.now();
+		return fn.apply(undefined, arguments);
+	};
+
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		var now = Date.now();
+
+		if (now - lastCall >= ms) {
+			lastCall = Date.now();
+		}
+
+		clearTimeout(trailingId);
+		trailingId = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
+	};
+}
+
 var leadingWhiteSpace = /^\s+/;
@@ -548,8 +756,9 @@
 
-function uniq(arr) {
-	// with polyfills this could be just: return Array.from(new Set(arr))
+function uniqBy(iteratee, arr) {
+	// with polyfills this could be just: return Array.from(new Set(arr.map(iteratee)))
 	var seen = [];
 	return arr.filter(function (element) {
-		if (seen.indexOf(element) === -1) {
-			seen.push(element);
+		var key = iteratee(element);
+		if (seen.indexOf(key) === -1) {
+			seen.push(key);
 			return true;
@@ -561,2 +770,6 @@ }
 
+function uniq(arr) {
+	return uniqBy(identity, arr);
+}
+
 function update(index, newElement, arr) {
@@ -572,2 +785,2 @@ return [].concat(arr.slice(0, index), [newElement], arr.slice(index + 1, arr.length));
 
-export { add, assign, cloneDeep, camelCase, compact, compose, dropRight, find, findIndex, findLast, findLastIndex, findLastIndexFrom, flatMap, flatten, forOwn, fromPairs, generateRandomId, generateUniqueId, get$1 as get, getOr, groupBy, groupKeys, hasOwn, identity, includes, isArray, isEmpty, isObject, keyBy, last, mapKeys, mapValues, mapValuesIndexed, merge, mergeAll, memoize, memoizeOne, noop, numericSortBy, omit, omitBy, omitByIndexed, once, pick, pickBy, pickByIndexed, pickOwn, reject, removeAt, shallowEqual, splitAt, splitRightWhenAccum, sum, takeRightWhileFrom, throttle, toPairs, trimStart, trimEnd, uniq, update, values, without };
+export { add, assign, chain, cloneDeep, camelCase, compact, compose, debounce, defaultTo, drop, dropRight, ensureArray, find, findIndex, findKey, findLast, findLastIndex, findLastIndexFrom, flatMap, flatten, forOwn, fromPairs, generateRandomId, generateUniqueId, get$1 as get, getOr, groupBy, groupKeys, hasOwn, identity, includes, isArray, isEmpty, isNil, isObject, keyBy, last, mapKeys, mapValues, mapValuesIndexed, merge, mergeAll, memoize, memoizeOne, memoizeWith, noop, numericSortBy, omit, omitBy, omitByIndexed, once, over, overArgs, pick, pickBy, pickByIndexed, pickOwn, reject, removeAt, set$1 as set, shallowEqual, sliceDiff, snakeCase, splitAt, splitRightWhenAccum, spread, sum, take, takeLast, takeRightWhileFrom, throttle, toPairs, trailingThrottle, trimStart, trimEnd, uniq, uniqBy, update, values, without };

dist/data-utils.js

@@ -35,2 +35,18 @@ 'use strict';
 
+function flatMap(iteratee, arr) {
+	var _ref;
+
+	return (_ref = []).concat.apply(_ref, arr.map(iteratee));
+}
+
+function chain(fn, listOrFn) {
+	if (typeof listOrFn === 'function') {
+		return function (list) {
+			return fn(listOrFn(list))(list);
+		};
+	}
+
+	return flatMap(fn, listOrFn);
+}
+
 var isArray = Array.isArray;
@@ -48,5 +64,5 @@
 
-function mapValues(iteratee, obj) {
+function mapValues(mapper, obj) {
 	return Object.keys(obj).reduce(function (acc, key) {
-		acc[key] = iteratee(obj[key]);
+		acc[key] = mapper(obj[key]);
 		return acc;
@@ -68,12 +84,70 @@ }, {});
 
-function camelCase(text) {
-	return text.replace(/^[_.\- ]+/, '').toLowerCase().replace(/[_.\- ]+(\w|$)/g, function (__, p1) {
+// slightly simplified version of https://github.com/sindresorhus/camelcase/blob/a526ef0399f9a1310eaacafa0ae4a69da4a2f1ad/index.js
+// TODO: possibly could be rewritten using short-ish regexp
+
+var preserveCamelCase = function preserveCamelCase(input) {
+	var text = input;
+	var isLastCharLower = false;
+	var isLastCharUpper = false;
+	var isLastLastCharUpper = false;
+
+	for (var index = 0; index < text.length; index++) {
+		var char = text[index];
+
+		if (isLastCharLower && /[a-zA-Z]/.test(char) && char.toUpperCase() === char) {
+			text = text.slice(0, index) + '-' + text.slice(index);
+			isLastCharLower = false;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = true;
+			index++;
+		} else if (isLastCharUpper && isLastLastCharUpper && /[a-zA-Z]/.test(char) && char.toLowerCase() === char) {
+			text = text.slice(0, index - 1) + '-' + text.slice(index - 1);
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = false;
+			isLastCharLower = true;
+		} else {
+			isLastCharLower = char.toLowerCase() === char;
+			isLastLastCharUpper = isLastCharUpper;
+			isLastCharUpper = char.toUpperCase() === char;
+		}
+	}
+
+	return text;
+};
+
+function camelCase(input) {
+	var text = input.trim();
+
+	if (text.length === 0) {
+		return '';
+	}
+
+	if (text.length === 1) {
+		return text.toLowerCase();
+	}
+
+	if (/^[a-z\d]+$/.test(text)) {
+		return text;
+	}
+
+	var hasUpperCase = text !== text.toLowerCase();
+
+	if (hasUpperCase) {
+		text = preserveCamelCase(text);
+	}
+
+	text = text.replace(/^[_.\- ]+/, '').toLowerCase().replace(/[_.\- ]+(\w|$)/g, function (match, p1) {
 		return p1.toUpperCase();
 	});
+
+	return text;
 }
 
 function compact(collection) {
-	return isArray(collection) ? collection.filter(Boolean) : Object.keys(collection).reduce(function (result, key) {
-		if (collection[key]) {
-			result[key] = collection[key];
+	return isArray(collection) ? collection.filter(function (value) {
+		return value !== null && value !== undefined;
+	}) : Object.keys(collection).reduce(function (result, key) {
+		var value = collection[key];
+		if (value !== null && value !== undefined) {
+			result[key] = value;
 		}
@@ -96,2 +170,29 @@ return result;
 
+function debounce(ms, fn) {
+	var timeoutId = void 0;
+
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		clearTimeout(timeoutId);
+		timeoutId = setTimeout.apply(undefined, [fn, ms].concat(args));
+	};
+}
+
+function isNil(value) {
+	return value === null || value === undefined;
+}
+
+function defaultTo(defaultValue) {
+	return function (value) {
+		return isNil(value) ? defaultValue : value;
+	};
+}
+
+function drop(count, arr) {
+	return arr.slice(count);
+}
+
 function dropRight(count, arr) {
@@ -101,2 +202,6 @@ return arr.slice(0, -count);
 
+function ensureArray(maybeArr) {
+	return isArray(maybeArr) ? maybeArr : [maybeArr];
+}
+
 // eslint-disable-next-line consistent-return
@@ -123,2 +228,9 @@ function find(predicate, arr) {
 // eslint-disable-next-line consistent-return
+function findKey(predicate, obj) {
+	return find(function (key) {
+		return predicate(obj[key]);
+	}, Object.keys(obj));
+}
+
+// eslint-disable-next-line consistent-return
 function findLast(predicate, arr) {
@@ -146,8 +258,2 @@ for (var index = arr.length - 1; index >= 0; index--) {
 
-function flatMap(iteratee, arr) {
-	var _ref;
-
-	return (_ref = []).concat.apply(_ref, arr.map(iteratee));
-}
-
 // eslint-disable-next-line lodash-fp/prefer-identity
@@ -296,16 +402,13 @@ function identity(value) {
 
-function memoize(func) {
-	var keys = [];
-	var values = [];
+function memoizeWith(keyResolver, func) {
+	var cache = {};
 	return function () {
-		var key = arguments.length <= 0 ? undefined : arguments[0];
-		var index = keys.indexOf(key);
+		var key = keyResolver.apply(undefined, arguments);
 
-		if (index !== -1) {
-			return values[index];
+		if (hasOwn(key, cache)) {
+			return cache[key];
 		}
 
 		var value = func.apply(undefined, arguments);
-		keys.push(key);
-		values.push(value);
+		cache[key] = value;
 		return value;
@@ -315,2 +418,6 @@ };
 
+function memoize(func) {
+	return memoizeWith(identity, func);
+}
+
 function memoizeOne(fn) {
@@ -385,2 +492,31 @@ var called = false;
 
+function over(fns) {
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		return fns.map(function (fn) {
+			return fn.apply(undefined, args);
+		});
+	};
+}
+
+function takeLast(count, arr) {
+	return arr.slice(-count);
+}
+
+function overArgs(fn, transformers) {
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		var transformed = transformers.map(function (transform, index) {
+			return transform(args[index]);
+		});
+		return args.length > transformed.length ? fn.apply(undefined, transformed.concat(takeLast(args.length - transformed.length, args))) : fn.apply(undefined, transformed);
+	};
+}
+
 function pick(props, obj) {
@@ -432,2 +568,24 @@ return props.reduce(function (acc, prop) {
 
+// based on https://github.com/lukeed/dset/blob/f8ce2f65d4adae7842492eb519a7e55de9abdf38/src/index.js
+
+function set$1(_keys, val, input) {
+	var keys = _keys.split ? _keys.split('.') : _keys;
+	var length = keys.length;
+	// TODO: we should clone as we go instead of doing a deep copy upfront
+	var obj = cloneDeep(input);
+	var pointer = obj;
+	for (var index = 0; index < length; ++index) {
+		var pointerValue = pointer[keys[index]];
+		if (index === length - 1) {
+			pointer = pointer[keys[index]] = val;
+			// eslint-disable-next-line eqeqeq
+		} else if (pointerValue == null) {
+			pointer = pointer[keys[index]] = {};
+		} else {
+			pointer = pointer[keys[index]] = pointerValue;
+		}
+	}
+	return obj;
+}
+
 // https://github.com/reactjs/react-redux/blob/5d792a283554cff3d2f54fad1be1f79cbcab33fe/src/utils/shallowEqual.js
@@ -464,2 +622,19 @@
 
+function sliceDiff(slice, obj) {
+	var picked = pickByIndexed(function (value, key) {
+		return value !== obj[key];
+	}, slice);
+	return isEmpty(picked) ? null : picked;
+}
+
+// TODO: this could be written a lot better
+function snakeCase(str) {
+	var snakeCased = str.replace(/[A-Z]|([\-_ ]+)/g, function (match) {
+		var code = match.charCodeAt(0);
+		var upperCased = code > 64 && code < 91;
+		return upperCased ? '_' + match.toLowerCase() : '_';
+	});
+	return snakeCased[0] === '_' ? snakeCased.substr(1) : snakeCased;
+}
+
 function splitAt(splitPoint, arr) {
@@ -490,2 +665,8 @@ // TODO first item from the tuple could be replaced by dropRight
 
+function spread(fn) {
+	return function (args) {
+		return fn.apply(undefined, args);
+	};
+}
+
 function sum(numbers) {
@@ -495,2 +676,6 @@ return numbers.reduce(add, 0);
 
+function take(count, arr) {
+	return arr.slice(0, count);
+}
+
 function takeRightWhileFrom(predicate, startIndex, arr) {
@@ -505,8 +690,7 @@ var endIndex = findLastIndexFrom(function (element) {
 	var lastCall = Date.now() - 2 * ms;
-	var result = void 0;
-	var trailing = void 0;
+	var trailingId = void 0;
 
 	var invoke = function invoke() {
 		lastCall = Date.now();
-		return result = fn.apply(undefined, arguments);
+		fn.apply(undefined, arguments);
 	};
@@ -522,9 +706,8 @@
 		if (now - lastCall >= ms) {
-			return invoke.apply(undefined, args);
+			invoke.apply(undefined, args);
+			return;
 		}
 
-		clearTimeout(trailing);
-		trailing = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
-
-		return result;
+		clearTimeout(trailingId);
+		trailingId = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
 	};
@@ -539,2 +722,27 @@ }
 
+function trailingThrottle(ms, fn) {
+	var lastCall = Date.now() - 2 * ms;
+	var trailingId = void 0;
+
+	var invoke = function invoke() {
+		lastCall = Date.now();
+		return fn.apply(undefined, arguments);
+	};
+
+	return function () {
+		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+			args[_key] = arguments[_key];
+		}
+
+		var now = Date.now();
+
+		if (now - lastCall >= ms) {
+			lastCall = Date.now();
+		}
+
+		clearTimeout(trailingId);
+		trailingId = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
+	};
+}
+
 var leadingWhiteSpace = /^\s+/;
@@ -552,8 +760,9 @@
 
-function uniq(arr) {
-	// with polyfills this could be just: return Array.from(new Set(arr))
+function uniqBy(iteratee, arr) {
+	// with polyfills this could be just: return Array.from(new Set(arr.map(iteratee)))
 	var seen = [];
 	return arr.filter(function (element) {
-		if (seen.indexOf(element) === -1) {
-			seen.push(element);
+		var key = iteratee(element);
+		if (seen.indexOf(key) === -1) {
+			seen.push(key);
 			return true;
@@ -565,2 +774,6 @@ }
 
+function uniq(arr) {
+	return uniqBy(identity, arr);
+}
+
 function update(index, newElement, arr) {
@@ -578,2 +791,3 @@ return [].concat(arr.slice(0, index), [newElement], arr.slice(index + 1, arr.length));
 exports.assign = assign;
+exports.chain = chain;
 exports.cloneDeep = cloneDeep;
@@ -583,5 +797,10 @@ exports.camelCase = camelCase;
 exports.compose = compose;
+exports.debounce = debounce;
+exports.defaultTo = defaultTo;
+exports.drop = drop;
 exports.dropRight = dropRight;
+exports.ensureArray = ensureArray;
 exports.find = find;
 exports.findIndex = findIndex;
+exports.findKey = findKey;
 exports.findLast = findLast;
@@ -605,2 +824,3 @@ exports.findLastIndex = findLastIndex;
 exports.isEmpty = isEmpty;
+exports.isNil = isNil;
 exports.isObject = isObject;
@@ -616,2 +836,3 @@ exports.keyBy = keyBy;
 exports.memoizeOne = memoizeOne;
+exports.memoizeWith = memoizeWith;
 exports.noop = noop;
@@ -623,2 +844,4 @@ exports.numericSortBy = numericSortBy;
 exports.once = once;
+exports.over = over;
+exports.overArgs = overArgs;
 exports.pick = pick;
@@ -630,14 +853,22 @@ exports.pickBy = pickBy;
 exports.removeAt = removeAt;
+exports.set = set$1;
 exports.shallowEqual = shallowEqual;
+exports.sliceDiff = sliceDiff;
+exports.snakeCase = snakeCase;
 exports.splitAt = splitAt;
 exports.splitRightWhenAccum = splitRightWhenAccum;
+exports.spread = spread;
 exports.sum = sum;
+exports.take = take;
+exports.takeLast = takeLast;
 exports.takeRightWhileFrom = takeRightWhileFrom;
 exports.throttle = throttle;
 exports.toPairs = toPairs;
+exports.trailingThrottle = trailingThrottle;
 exports.trimStart = trimStart;
 exports.trimEnd = trimEnd;
 exports.uniq = uniq;
+exports.uniqBy = uniqBy;
 exports.update = update;
 exports.values = values;
 exports.without = without;

dist/data-utils.umd.js

@@ -37,2 +37,18 @@ (function (global, factory) {
 
+	function flatMap(iteratee, arr) {
+		var _ref;
+
+		return (_ref = []).concat.apply(_ref, arr.map(iteratee));
+	}
+
+	function chain(fn, listOrFn) {
+		if (typeof listOrFn === 'function') {
+			return function (list) {
+				return fn(listOrFn(list))(list);
+			};
+		}
+
+		return flatMap(fn, listOrFn);
+	}
+
 	var isArray = Array.isArray;
@@ -50,5 +66,5 @@
 
-	function mapValues(iteratee, obj) {
+	function mapValues(mapper, obj) {
 		return Object.keys(obj).reduce(function (acc, key) {
-			acc[key] = iteratee(obj[key]);
+			acc[key] = mapper(obj[key]);
 			return acc;
@@ -70,12 +86,70 @@ }, {});
 
-	function camelCase(text) {
-		return text.replace(/^[_.\- ]+/, '').toLowerCase().replace(/[_.\- ]+(\w|$)/g, function (__, p1) {
+	// slightly simplified version of https://github.com/sindresorhus/camelcase/blob/a526ef0399f9a1310eaacafa0ae4a69da4a2f1ad/index.js
+	// TODO: possibly could be rewritten using short-ish regexp
+
+	var preserveCamelCase = function preserveCamelCase(input) {
+		var text = input;
+		var isLastCharLower = false;
+		var isLastCharUpper = false;
+		var isLastLastCharUpper = false;
+
+		for (var index = 0; index < text.length; index++) {
+			var char = text[index];
+
+			if (isLastCharLower && /[a-zA-Z]/.test(char) && char.toUpperCase() === char) {
+				text = text.slice(0, index) + '-' + text.slice(index);
+				isLastCharLower = false;
+				isLastLastCharUpper = isLastCharUpper;
+				isLastCharUpper = true;
+				index++;
+			} else if (isLastCharUpper && isLastLastCharUpper && /[a-zA-Z]/.test(char) && char.toLowerCase() === char) {
+				text = text.slice(0, index - 1) + '-' + text.slice(index - 1);
+				isLastLastCharUpper = isLastCharUpper;
+				isLastCharUpper = false;
+				isLastCharLower = true;
+			} else {
+				isLastCharLower = char.toLowerCase() === char;
+				isLastLastCharUpper = isLastCharUpper;
+				isLastCharUpper = char.toUpperCase() === char;
+			}
+		}
+
+		return text;
+	};
+
+	function camelCase(input) {
+		var text = input.trim();
+
+		if (text.length === 0) {
+			return '';
+		}
+
+		if (text.length === 1) {
+			return text.toLowerCase();
+		}
+
+		if (/^[a-z\d]+$/.test(text)) {
+			return text;
+		}
+
+		var hasUpperCase = text !== text.toLowerCase();
+
+		if (hasUpperCase) {
+			text = preserveCamelCase(text);
+		}
+
+		text = text.replace(/^[_.\- ]+/, '').toLowerCase().replace(/[_.\- ]+(\w|$)/g, function (match, p1) {
 			return p1.toUpperCase();
 		});
+
+		return text;
 	}
 
 	function compact(collection) {
-		return isArray(collection) ? collection.filter(Boolean) : Object.keys(collection).reduce(function (result, key) {
-			if (collection[key]) {
-				result[key] = collection[key];
+		return isArray(collection) ? collection.filter(function (value) {
+			return value !== null && value !== undefined;
+		}) : Object.keys(collection).reduce(function (result, key) {
+			var value = collection[key];
+			if (value !== null && value !== undefined) {
+				result[key] = value;
 			}
@@ -98,2 +172,29 @@ return result;
 
+	function debounce(ms, fn) {
+		var timeoutId = void 0;
+
+		return function () {
+			for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+				args[_key] = arguments[_key];
+			}
+
+			clearTimeout(timeoutId);
+			timeoutId = setTimeout.apply(undefined, [fn, ms].concat(args));
+		};
+	}
+
+	function isNil(value) {
+		return value === null || value === undefined;
+	}
+
+	function defaultTo(defaultValue) {
+		return function (value) {
+			return isNil(value) ? defaultValue : value;
+		};
+	}
+
+	function drop(count, arr) {
+		return arr.slice(count);
+	}
+
 	function dropRight(count, arr) {
@@ -103,2 +204,6 @@ return arr.slice(0, -count);
 
+	function ensureArray(maybeArr) {
+		return isArray(maybeArr) ? maybeArr : [maybeArr];
+	}
+
 	// eslint-disable-next-line consistent-return
@@ -125,2 +230,9 @@ function find(predicate, arr) {
 	// eslint-disable-next-line consistent-return
+	function findKey(predicate, obj) {
+		return find(function (key) {
+			return predicate(obj[key]);
+		}, Object.keys(obj));
+	}
+
+	// eslint-disable-next-line consistent-return
 	function findLast(predicate, arr) {
@@ -148,8 +260,2 @@ for (var index = arr.length - 1; index >= 0; index--) {
 
-	function flatMap(iteratee, arr) {
-		var _ref;
-
-		return (_ref = []).concat.apply(_ref, arr.map(iteratee));
-	}
-
 	// eslint-disable-next-line lodash-fp/prefer-identity
@@ -298,16 +404,13 @@ function identity(value) {
 
-	function memoize(func) {
-		var keys = [];
-		var values = [];
+	function memoizeWith(keyResolver, func) {
+		var cache = {};
 		return function () {
-			var key = arguments.length <= 0 ? undefined : arguments[0];
-			var index = keys.indexOf(key);
+			var key = keyResolver.apply(undefined, arguments);
 
-			if (index !== -1) {
-				return values[index];
+			if (hasOwn(key, cache)) {
+				return cache[key];
 			}
 
 			var value = func.apply(undefined, arguments);
-			keys.push(key);
-			values.push(value);
+			cache[key] = value;
 			return value;
@@ -317,2 +420,6 @@ };
 
+	function memoize(func) {
+		return memoizeWith(identity, func);
+	}
+
 	function memoizeOne(fn) {
@@ -387,2 +494,31 @@ var called = false;
 
+	function over(fns) {
+		return function () {
+			for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+				args[_key] = arguments[_key];
+			}
+
+			return fns.map(function (fn) {
+				return fn.apply(undefined, args);
+			});
+		};
+	}
+
+	function takeLast(count, arr) {
+		return arr.slice(-count);
+	}
+
+	function overArgs(fn, transformers) {
+		return function () {
+			for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+				args[_key] = arguments[_key];
+			}
+
+			var transformed = transformers.map(function (transform, index) {
+				return transform(args[index]);
+			});
+			return args.length > transformed.length ? fn.apply(undefined, transformed.concat(takeLast(args.length - transformed.length, args))) : fn.apply(undefined, transformed);
+		};
+	}
+
 	function pick(props, obj) {
@@ -434,2 +570,24 @@ return props.reduce(function (acc, prop) {
 
+	// based on https://github.com/lukeed/dset/blob/f8ce2f65d4adae7842492eb519a7e55de9abdf38/src/index.js
+
+	function set$1(_keys, val, input) {
+		var keys = _keys.split ? _keys.split('.') : _keys;
+		var length = keys.length;
+		// TODO: we should clone as we go instead of doing a deep copy upfront
+		var obj = cloneDeep(input);
+		var pointer = obj;
+		for (var index = 0; index < length; ++index) {
+			var pointerValue = pointer[keys[index]];
+			if (index === length - 1) {
+				pointer = pointer[keys[index]] = val;
+				// eslint-disable-next-line eqeqeq
+			} else if (pointerValue == null) {
+				pointer = pointer[keys[index]] = {};
+			} else {
+				pointer = pointer[keys[index]] = pointerValue;
+			}
+		}
+		return obj;
+	}
+
 	// https://github.com/reactjs/react-redux/blob/5d792a283554cff3d2f54fad1be1f79cbcab33fe/src/utils/shallowEqual.js
@@ -466,2 +624,19 @@
 
+	function sliceDiff(slice, obj) {
+		var picked = pickByIndexed(function (value, key) {
+			return value !== obj[key];
+		}, slice);
+		return isEmpty(picked) ? null : picked;
+	}
+
+	// TODO: this could be written a lot better
+	function snakeCase(str) {
+		var snakeCased = str.replace(/[A-Z]|([\-_ ]+)/g, function (match) {
+			var code = match.charCodeAt(0);
+			var upperCased = code > 64 && code < 91;
+			return upperCased ? '_' + match.toLowerCase() : '_';
+		});
+		return snakeCased[0] === '_' ? snakeCased.substr(1) : snakeCased;
+	}
+
 	function splitAt(splitPoint, arr) {
@@ -492,2 +667,8 @@ // TODO first item from the tuple could be replaced by dropRight
 
+	function spread(fn) {
+		return function (args) {
+			return fn.apply(undefined, args);
+		};
+	}
+
 	function sum(numbers) {
@@ -497,2 +678,6 @@ return numbers.reduce(add, 0);
 
+	function take(count, arr) {
+		return arr.slice(0, count);
+	}
+
 	function takeRightWhileFrom(predicate, startIndex, arr) {
@@ -507,8 +692,7 @@ var endIndex = findLastIndexFrom(function (element) {
 		var lastCall = Date.now() - 2 * ms;
-		var result = void 0;
-		var trailing = void 0;
+		var trailingId = void 0;
 
 		var invoke = function invoke() {
 			lastCall = Date.now();
-			return result = fn.apply(undefined, arguments);
+			fn.apply(undefined, arguments);
 		};
@@ -524,9 +708,8 @@
 			if (now - lastCall >= ms) {
-				return invoke.apply(undefined, args);
+				invoke.apply(undefined, args);
+				return;
 			}
 
-			clearTimeout(trailing);
-			trailing = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
-
-			return result;
+			clearTimeout(trailingId);
+			trailingId = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
 		};
@@ -541,2 +724,27 @@ }
 
+	function trailingThrottle(ms, fn) {
+		var lastCall = Date.now() - 2 * ms;
+		var trailingId = void 0;
+
+		var invoke = function invoke() {
+			lastCall = Date.now();
+			return fn.apply(undefined, arguments);
+		};
+
+		return function () {
+			for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
+				args[_key] = arguments[_key];
+			}
+
+			var now = Date.now();
+
+			if (now - lastCall >= ms) {
+				lastCall = Date.now();
+			}
+
+			clearTimeout(trailingId);
+			trailingId = setTimeout.apply(undefined, [invoke, lastCall - now + ms].concat(args));
+		};
+	}
+
 	var leadingWhiteSpace = /^\s+/;
@@ -554,8 +762,9 @@
 
-	function uniq(arr) {
-		// with polyfills this could be just: return Array.from(new Set(arr))
+	function uniqBy(iteratee, arr) {
+		// with polyfills this could be just: return Array.from(new Set(arr.map(iteratee)))
 		var seen = [];
 		return arr.filter(function (element) {
-			if (seen.indexOf(element) === -1) {
-				seen.push(element);
+			var key = iteratee(element);
+			if (seen.indexOf(key) === -1) {
+				seen.push(key);
 				return true;
@@ -567,2 +776,6 @@ }
 
+	function uniq(arr) {
+		return uniqBy(identity, arr);
+	}
+
 	function update(index, newElement, arr) {
@@ -580,2 +793,3 @@ return [].concat(arr.slice(0, index), [newElement], arr.slice(index + 1, arr.length));
 	exports.assign = assign;
+	exports.chain = chain;
 	exports.cloneDeep = cloneDeep;
@@ -585,5 +799,10 @@ exports.camelCase = camelCase;
 	exports.compose = compose;
+	exports.debounce = debounce;
+	exports.defaultTo = defaultTo;
+	exports.drop = drop;
 	exports.dropRight = dropRight;
+	exports.ensureArray = ensureArray;
 	exports.find = find;
 	exports.findIndex = findIndex;
+	exports.findKey = findKey;
 	exports.findLast = findLast;
@@ -607,2 +826,3 @@ exports.findLastIndex = findLastIndex;
 	exports.isEmpty = isEmpty;
+	exports.isNil = isNil;
 	exports.isObject = isObject;
@@ -618,2 +838,3 @@ exports.keyBy = keyBy;
 	exports.memoizeOne = memoizeOne;
+	exports.memoizeWith = memoizeWith;
 	exports.noop = noop;
@@ -625,2 +846,4 @@ exports.numericSortBy = numericSortBy;
 	exports.once = once;
+	exports.over = over;
+	exports.overArgs = overArgs;
 	exports.pick = pick;
@@ -632,12 +855,20 @@ exports.pickBy = pickBy;
 	exports.removeAt = removeAt;
+	exports.set = set$1;
 	exports.shallowEqual = shallowEqual;
+	exports.sliceDiff = sliceDiff;
+	exports.snakeCase = snakeCase;
 	exports.splitAt = splitAt;
 	exports.splitRightWhenAccum = splitRightWhenAccum;
+	exports.spread = spread;
 	exports.sum = sum;
+	exports.take = take;
+	exports.takeLast = takeLast;
 	exports.takeRightWhileFrom = takeRightWhileFrom;
 	exports.throttle = throttle;
 	exports.toPairs = toPairs;
+	exports.trailingThrottle = trailingThrottle;
 	exports.trimStart = trimStart;
 	exports.trimEnd = trimEnd;
 	exports.uniq = uniq;
+	exports.uniqBy = uniqBy;
 	exports.update = update;
@@ -644,0 +875,0 @@ exports.values = values;

dist/data-utils.umd.min.js

@@ -1,1 +0,1 @@
-!function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(n.DataUtils={})}(this,function(n){"use strict";function t(n,t){return n+t}var r={}.hasOwnProperty;function o(n,t){return r.call(t,n)}function e(){return(e=Object.assign||function(r){for(var n=arguments.length,t=Array(1<n?n-1:0),e=1;e<n;e++)t[e-1]=arguments[e];return t.forEach(function(n){for(var t in n)o(t,n)&&(r[t]=n[t])}),r}).apply(void 0,arguments)}var u=Array.isArray,i="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(n){return typeof n}:function(n){return n&&"function"==typeof Symbol&&n.constructor===Symbol&&n!==Symbol.prototype?"symbol":typeof n};function c(n){return"object"===(void 0===n?"undefined":i(n))&&null!==n&&!u(n)}function f(r,e){return Object.keys(e).reduce(function(n,t){return n[t]=r(e[t]),n},{})}function a(n,t,r){for(var e=t;0<=e;e--)if(n(r[e]))return e;return-1}function l(n,t){var r;return(r=[]).concat.apply(r,t.map(n))}function d(n){return n}function s(t,r){return Object.keys(r).forEach(function(n){t(r[n],n)})}function p(){return Math.random().toString(36).substring(2)}function y(n,t){for(var r="string"==typeof n?n.split("."):n,e=0,u=t;u&&e<r.length;)u=u[r[e++]];return u}function v(n){return 0===(u(n)?n:Object.keys(n)).length}function m(r,e){if(v(e))return r;var u={};return s(function(n,t){u[t]=o(t,e)?c(r[t])&&c(e[t])?m(r[t],e[t]):e[t]:r[t]},r),s(function(n,t){o(t,u)||(u[t]=e[t])},e),u}function h(t){return Object.keys(t).map(function(n){return t[n]})}function g(r,e){return Object.keys(e).reduce(function(n,t){return r(e[t],t)||(n[t]=e[t]),n},{})}function b(n,t){return n===t?0!==n||0!==t||1/n==1/t:n!=n&&t!=t}function O(n,t){return[t.slice(0,n),t.slice(n,t.length)]}var j=/^\s+/;var k=/\s+$/;n.add=t,n.assign=e,n.cloneDeep=function n(t){return u(t)?t.map(n):c(t)?f(n,t):t},n.camelCase=function(n){return n.replace(/^[_.\- ]+/,"").toLowerCase().replace(/[_.\- 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package.json

 {
   "name": "@livechat/data-utils",
-  "version": "0.2.3",
+  "version": "0.2.4",
   "description": "Collections utility functions",
@@ -24,3 +24,3 @@ "contributors": [
     "rimraf": "^2.6.1",
-    "rollup": "^0.57.1",
+    "rollup": "^0.63.5",
     "rollup-plugin-babel": "^2.7.1",
@@ -27,0 +27,0 @@ "rollup-plugin-commonjs": "^8.2.1",

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