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Code Issues Releases Wiki Activity

Replace remaining general utils with js-utility-belt's

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And removes a few unused utils
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Brett Sun 2016-06-13 16:32:38 +02:00
parent 56044488d7
commit ec78ecb8ab
1 changed files with 6 additions and 155 deletions
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161
js/utils/general.js
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@ -1,5 +1,3 @@
'use strict';
/**
* Checks shallow equality
* Re-export of shallow from shallow-equals
@ -8,51 +6,15 @@ export { default as isShallowEqual } from 'shallow-equals';
// Re-export general utilities from js-utility-belt for easier access
export {
deepMatchObject,
intersectLists,
omitFromObject,
safeMerge,
sanitize
sanitize,
sanitizeList,
selectFromObject
} from 'js-utility-belt/es6';
/**
* Removes all falsy values (undefined, null, false, ...) from a list/array
* @param {array} l the array to sanitize
* @return {array} the sanitized array
*/
export function sanitizeList(l) {
let sanitizedList = [];
for(let i = 0; i < l.length; i++) {
if(l[i]) {
sanitizedList.push(l[i]);
}
}
return sanitizedList;
}
/**
* Sums up a list of numbers. Like a Epsilon-math-kinda-sum...
*/
export function sumNumList(l) {
let sum = 0;
l.forEach((num) => sum += parseFloat(num) || 0);
return sum;
}
*/
/**
* In place update of a dictionary
*/
export function update(a, ...l) {
for(let i = 0; i < l.length; i++) {
for (let attrname in l[i]) {
a[attrname] = l[i][attrname];
}
}
return a;
}
/**
* Escape HTML in a string so it can be injected safely using
* React's `dangerouslySetInnerHTML`
@ -65,107 +27,6 @@ export function escapeHTML(s) {
return document.createElement('div').appendChild(document.createTextNode(s)).parentNode.innerHTML;
}
/**
* Returns a copy of the given object's own and inherited enumerable
* properties, omitting any keys that pass the given filter function.
*/
function applyFilterOnObject(obj, filterFn) {
const filteredObj = {};
for (let key in obj) {
const val = obj[key];
if (filterFn == null || !filterFn(val, key)) {
filteredObj[key] = val;
}
}
return filteredObj;
}
/**
* Abstraction for selectFromObject and omitFromObject
* for DRYness
* @param {boolean} isInclusion True if the filter should be for including the filtered items
* (ie. selecting only them vs omitting only them)
*/
function filterFromObject(obj, filter, { isInclusion = true } = {}) {
if (filter && filter.constructor === Array) {
return applyFilterOnObject(obj, isInclusion ? ((_, key) => filter.indexOf(key) < 0)
: ((_, key) => filter.indexOf(key) >= 0));
} else if (filter && typeof filter === 'function') {
// Flip the filter fn's return if it's for inclusion
return applyFilterOnObject(obj, isInclusion ? (...args) => !filter(...args)
: filter);
} else {
throw new Error('The given filter is not an array or function. Exclude aborted');
}
}
/**
* Similar to lodash's _.pick(), this returns a copy of the given object's
* own and inherited enumerable properties, selecting only the keys in
* the given array or whose value pass the given filter function.
* @param {object} obj Source object
* @param {array|function} filter Array of key names to select or function to invoke per iteration
* @return {object} The new object
*/
export function selectFromObject(obj, filter) {
return filterFromObject(obj, filter);
}
/**
* Similar to lodash's _.omit(), this returns a copy of the given object's
* own and inherited enumerable properties, omitting any keys that are
* in the given array or whose value pass the given filter function.
* @param {object} obj Source object
* @param {array|function} filter Array of key names to omit or function to invoke per iteration
* @return {object} The new object
*/
export function omitFromObject(obj, filter) {
return filterFromObject(obj, filter, { isInclusion: false });
}
/**
* Recursively tests an object against a "match" object to see if the
* object is similar to the "match" object. In other words, this will
* deeply traverse the "match" object's properties and check them
* against the object by using the testFn.
*
* The object is considered a match if all primitive properties in the
* "match" object are found and accepted in the object by the testFn.
*
* @param {object} obj Object to test
* @param {object} match "Match" object to test against
* @param {(function)} testFn Function to use on each property test.
* Return true to accept the match.
* By default, applies strict equality using ===
* @return {boolean} True if obj matches the "match" object
*/
export function deepMatchObject(obj, match, testFn = (objProp, matchProp) => objProp === matchProp) {
if (typeof match !== 'object') {
throw new Error('Your specified match argument was not an object');
}
if (typeof testFn !== 'function') {
throw new Error('Your specified test function was not a function');
}
return Object
.keys(match)
.reduce((result, matchKey) => {
if (!result) { return false; }
const objProp = obj && obj[matchKey];
const matchProp = match[matchKey];
if (typeof matchProp === 'object') {
return (typeof objProp === 'object') ? deepMatchObject(objProp, matchProp, testFn)
: false;
} else {
return testFn(objProp, matchProp);
}
}, true);
}
/**
* Takes a string and breaks it at the supplied index and replaces it
* with a (potentially) short string that also has been provided
@ -203,13 +64,3 @@ export function getSubdomain() {
let tokens = host.split('.');
return tokens.length > 2 ? tokens[0] : 'www';
}
/**
* Takes two lists and returns their intersection as a list
* @param {Array} a
* @param {Array} b
* @return {[Array]} Intersected list of a and b
*/
export function intersectLists(a, b) {
return a.filter((val) => b.indexOf(val) > -1);
}