├── .gitignore ├── .npmignore ├── CODEOWNERS ├── LICENSE ├── README.md ├── __tests__ └── ts-safe-access.spec.ts ├── coverage ├── base.css ├── clover.xml ├── coverage-final.json ├── coverage-summary.json ├── index.html ├── index.ts.html ├── lcov-report │ ├── base.css │ ├── index.html │ ├── index.ts.html │ ├── prettify.css │ ├── prettify.js │ ├── sort-arrow-sprite.png │ ├── sorter.js │ └── ts-safe-access.ts.html ├── lcov.info ├── prettify.css ├── prettify.js ├── sort-arrow-sprite.png ├── sorter.js └── ts-safe-access.ts.html ├── package-lock.json ├── package.json ├── src ├── index.ts └── ts-safe-access.ts ├── tsconfig.json └── yarn.lock /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | .vscode 3 | .idea 4 | dist -------------------------------------------------------------------------------- /.npmignore: -------------------------------------------------------------------------------- 1 | .vscode 2 | src 3 | .idea -------------------------------------------------------------------------------- /CODEOWNERS: -------------------------------------------------------------------------------- 1 | # Comment line immediately above ownership line is reserved for related gus information. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [2013] [Datorama] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ### 🍭 It's Like Lodash get with the 💪 of Typescript 2 | 3 | [![Build Status](https://semaphoreci.com/api/v1/netanel7799/ts-safe-access/branches/master/badge.svg)](https://semaphoreci.com/netanel7799/ts-safe-access) 4 | [![License](https://img.shields.io/dub/l/vibe-d.svg?style=flat-square)]() 5 | [![Stars](https://img.shields.io/redmine/plugin/stars/redmine_xlsx_format_issue_exporter.svg?style=flat-square)]() 6 | 7 | ## Installation 8 | `npm install @datorama/ts-safe-access --save` 9 | 10 | ## Usage 11 | 12 | - `get(object, getFn[, defaultValue, excludeNull = false])` - Gets the value at path of object. If the resolved value is `undefined`, the defaultValue is returned in its place. 13 | 14 | #### Options 15 | 16 | | Option | Description | Default Value | 17 | | -------------------- | ------------------------------------------------------------------ | ---------------- | 18 | | `defaultValue` | If the resolved value is `undefined`, the defaultValue is returned in its place.| `undefined` 19 | | `excludeNull` | if the resolved value is `null`, the defaultValue is returned in its place. | `false` 20 | 21 | 22 | ```js 23 | const data = {its: {really: {really: {really: {nested : undefined}}}}, nested: {value: null}}; 24 | const result = get(data, data => data.its.really.really.really.nested, 'defaultValue'); 25 | ``` 26 | 27 | - `has(object, getFn)` - Checks if path is a direct property of object. 28 | 29 | ```js 30 | const data = {its: {really: {really: {}}, b: {}}; 31 | const result = has(data, data => data.its.really.really.really.nested); 32 | 33 | expect(result).toEqual(false); 34 | ``` 35 | 36 | 37 | -------------------------------------------------------------------------------- /__tests__/ts-safe-access.spec.ts: -------------------------------------------------------------------------------- 1 | import {get, has} from "../src"; 2 | 3 | describe('get', function () { 4 | let obj = {a: {b: {c: {d: {g: undefined, f: null}}}}, b: {}}; 5 | 6 | it('should return the value when exists', function () { 7 | const result = get(obj, obj => obj.a.b); 8 | expect(result).toEqual({c: {d: {g: undefined, f: null}}}); 9 | }); 10 | 11 | it('should return the default value when not exists', function () { 12 | const result = get(obj, obj => obj.a.b.c.d.g, 'default'); 13 | expect(result).toEqual('default'); 14 | }); 15 | 16 | it('should return null value', function () { 17 | const result = get(obj, obj => obj.a.b.c.d.f); 18 | expect(result).toBeNull(); 19 | }); 20 | 21 | it('should return default value when value is null', function () { 22 | const result = get(obj, obj => obj.a.b.c.d.f, 'default', true); 23 | expect(result).toEqual('default'); 24 | }); 25 | 26 | it('should not throw when value does not exists', function () { 27 | expect(get.bind(null, obj, obj => obj.a.b.c.d.g, 'default')).not.toThrow(); 28 | }); 29 | 30 | }); 31 | 32 | 33 | describe('has', function () { 34 | let obj = {a: {b: {c: {d: {g: undefined}}}}, b: {}}; 35 | 36 | it('should return `true` when the value exists', function () { 37 | const result = has(obj, obj => obj.a.b); 38 | expect(result).toEqual(true); 39 | }); 40 | 41 | it('should return `false` when the value does not exists', function () { 42 | const result = has(obj, obj => obj.a.b.c.d.g); 43 | expect(result).toEqual(false); 44 | }); 45 | 46 | it('should not throw when value does not exists', function () { 47 | expect(has.bind(null, obj, obj => obj.a.b.c.d.g)).not.toThrow(); 48 | }); 49 | 50 | }); 51 | -------------------------------------------------------------------------------- /coverage/base.css: -------------------------------------------------------------------------------- 1 | body, html { 2 | margin:0; padding: 0; 3 | height: 100%; 4 | } 5 | body { 6 | font-family: Helvetica Neue, Helvetica, Arial; 7 | font-size: 14px; 8 | color:#333; 9 | } 10 | .small { font-size: 12px; } 11 | *, *:after, *:before { 12 | -webkit-box-sizing:border-box; 13 | -moz-box-sizing:border-box; 14 | box-sizing:border-box; 15 | } 16 | h1 { font-size: 20px; margin: 0;} 17 | h2 { font-size: 14px; } 18 | pre { 19 | font: 12px/1.4 Consolas, "Liberation Mono", Menlo, Courier, monospace; 20 | margin: 0; 21 | padding: 0; 22 | -moz-tab-size: 2; 23 | -o-tab-size: 2; 24 | tab-size: 2; 25 | } 26 | a { color:#0074D9; text-decoration:none; } 27 | a:hover { text-decoration:underline; } 28 | .strong { font-weight: bold; } 29 | .space-top1 { padding: 10px 0 0 0; } 30 | .pad2y { padding: 20px 0; } 31 | .pad1y { padding: 10px 0; } 32 | .pad2x { padding: 0 20px; } 33 | .pad2 { padding: 20px; } 34 | .pad1 { padding: 10px; } 35 | .space-left2 { padding-left:55px; } 36 | .space-right2 { padding-right:20px; } 37 | .center { text-align:center; } 38 | .clearfix { display:block; } 39 | .clearfix:after { 40 | content:''; 41 | display:block; 42 | height:0; 43 | clear:both; 44 | visibility:hidden; 45 | } 46 | .fl { float: left; } 47 | @media only screen and (max-width:640px) { 48 | .col3 { width:100%; max-width:100%; } 49 | .hide-mobile { display:none!important; } 50 | } 51 | 52 | .quiet { 53 | color: #7f7f7f; 54 | color: rgba(0,0,0,0.5); 55 | } 56 | .quiet a { opacity: 0.7; } 57 | 58 | .fraction { 59 | font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; 60 | font-size: 10px; 61 | color: #555; 62 | background: #E8E8E8; 63 | padding: 4px 5px; 64 | border-radius: 3px; 65 | vertical-align: middle; 66 | } 67 | 68 | div.path a:link, div.path a:visited { color: #333; } 69 | table.coverage { 70 | border-collapse: collapse; 71 | margin: 10px 0 0 0; 72 | padding: 0; 73 | } 74 | 75 | table.coverage td { 76 | margin: 0; 77 | padding: 0; 78 | vertical-align: top; 79 | } 80 | table.coverage td.line-count { 81 | text-align: right; 82 | padding: 0 5px 0 20px; 83 | } 84 | table.coverage td.line-coverage { 85 | text-align: right; 86 | padding-right: 10px; 87 | min-width:20px; 88 | } 89 | 90 | table.coverage td span.cline-any { 91 | display: inline-block; 92 | padding: 0 5px; 93 | width: 100%; 94 | } 95 | .missing-if-branch { 96 | display: inline-block; 97 | margin-right: 5px; 98 | border-radius: 3px; 99 | position: relative; 100 | padding: 0 4px; 101 | background: #333; 102 | color: yellow; 103 | } 104 | 105 | .skip-if-branch { 106 | display: none; 107 | margin-right: 10px; 108 | position: relative; 109 | padding: 0 4px; 110 | background: #ccc; 111 | color: white; 112 | } 113 | .missing-if-branch .typ, .skip-if-branch .typ { 114 | color: inherit !important; 115 | } 116 | .coverage-summary { 117 | border-collapse: collapse; 118 | width: 100%; 119 | } 120 | .coverage-summary tr { border-bottom: 1px solid #bbb; } 121 | .keyline-all { border: 1px solid #ddd; } 122 | .coverage-summary td, .coverage-summary th { padding: 10px; } 123 | .coverage-summary tbody { border: 1px solid #bbb; } 124 | .coverage-summary td { border-right: 1px solid #bbb; } 125 | .coverage-summary td:last-child { border-right: none; } 126 | .coverage-summary th { 127 | text-align: left; 128 | font-weight: normal; 129 | white-space: nowrap; 130 | } 131 | .coverage-summary th.file { border-right: none !important; } 132 | .coverage-summary th.pct { } 133 | .coverage-summary th.pic, 134 | .coverage-summary th.abs, 135 | .coverage-summary td.pct, 136 | .coverage-summary td.abs { text-align: right; } 137 | .coverage-summary td.file { white-space: nowrap; } 138 | .coverage-summary td.pic { min-width: 120px !important; } 139 | .coverage-summary tfoot td { } 140 | 141 | .coverage-summary .sorter { 142 | height: 10px; 143 | width: 7px; 144 | display: inline-block; 145 | margin-left: 0.5em; 146 | background: url(sort-arrow-sprite.png) no-repeat scroll 0 0 transparent; 147 | } 148 | .coverage-summary .sorted .sorter { 149 | background-position: 0 -20px; 150 | } 151 | .coverage-summary .sorted-desc .sorter { 152 | background-position: 0 -10px; 153 | } 154 | .status-line { height: 10px; } 155 | /* dark red */ 156 | .red.solid, .status-line.low, .low .cover-fill { background:#C21F39 } 157 | .low .chart { border:1px solid #C21F39 } 158 | /* medium red */ 159 | .cstat-no, .fstat-no, .cbranch-no, .cbranch-no { background:#F6C6CE } 160 | /* light red */ 161 | .low, .cline-no { background:#FCE1E5 } 162 | /* light green */ 163 | .high, .cline-yes { background:rgb(230,245,208) } 164 | /* medium green */ 165 | .cstat-yes { background:rgb(161,215,106) } 166 | /* dark green */ 167 | .status-line.high, .high .cover-fill { background:rgb(77,146,33) } 168 | .high .chart { border:1px solid rgb(77,146,33) } 169 | 170 | 171 | .medium .chart { border:1px solid #666; } 172 | .medium .cover-fill { background: #666; } 173 | 174 | .cbranch-no { background: yellow !important; color: #111; } 175 | 176 | .cstat-skip { background: #ddd; color: #111; } 177 | .fstat-skip { background: #ddd; color: #111 !important; } 178 | .cbranch-skip { background: #ddd !important; color: #111; } 179 | 180 | span.cline-neutral { background: #eaeaea; } 181 | .medium { background: #eaeaea; } 182 | 183 | .cover-fill, .cover-empty { 184 | display:inline-block; 185 | height: 12px; 186 | } 187 | .chart { 188 | line-height: 0; 189 | } 190 | .cover-empty { 191 | background: white; 192 | } 193 | .cover-full { 194 | border-right: none !important; 195 | } 196 | pre.prettyprint { 197 | border: none !important; 198 | padding: 0 !important; 199 | margin: 0 !important; 200 | } 201 | .com { color: #999 !important; } 202 | .ignore-none { color: #999; font-weight: normal; } 203 | 204 | .wrapper { 205 | min-height: 100%; 206 | height: auto !important; 207 | height: 100%; 208 | margin: 0 auto -48px; 209 | } 210 | .footer, .push { 211 | height: 48px; 212 | } 213 | -------------------------------------------------------------------------------- /coverage/clover.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | -------------------------------------------------------------------------------- /coverage/coverage-final.json: -------------------------------------------------------------------------------- 1 | {"/Users/netanelbasal/www/ts-safe-access/src/index.ts": 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getTableBody() { return getTable().querySelector('tbody'); } 15 | // returns the th element for nth column 16 | function getNthColumn(n) { return getTableHeader().querySelectorAll('th')[n]; } 17 | 18 | // loads all columns 19 | function loadColumns() { 20 | var colNodes = getTableHeader().querySelectorAll('th'), 21 | colNode, 22 | cols = [], 23 | col, 24 | i; 25 | 26 | for (i = 0; i < colNodes.length; i += 1) { 27 | colNode = colNodes[i]; 28 | col = { 29 | key: colNode.getAttribute('data-col'), 30 | sortable: !colNode.getAttribute('data-nosort'), 31 | type: colNode.getAttribute('data-type') || 'string' 32 | }; 33 | cols.push(col); 34 | if (col.sortable) { 35 | col.defaultDescSort = col.type === 'number'; 36 | colNode.innerHTML = colNode.innerHTML + ''; 37 | } 38 | } 39 | return cols; 40 | } 41 | // attaches a data attribute to every tr element with an object 42 | // of data values keyed by column name 43 | function loadRowData(tableRow) { 44 | var tableCols = tableRow.querySelectorAll('td'), 45 | colNode, 46 | col, 47 | data = {}, 48 | i, 49 | val; 50 | for (i = 0; i < tableCols.length; i += 1) { 51 | colNode = tableCols[i]; 52 | col = cols[i]; 53 | val = colNode.getAttribute('data-value'); 54 | if (col.type === 'number') { 55 | val = Number(val); 56 | } 57 | data[col.key] = val; 58 | } 59 | return data; 60 | } 61 | // loads all row data 62 | function loadData() { 63 | var rows = getTableBody().querySelectorAll('tr'), 64 | i; 65 | 66 | for (i = 0; i < rows.length; i += 1) { 67 | rows[i].data = loadRowData(rows[i]); 68 | } 69 | } 70 | // sorts the table using the data for the ith column 71 | function sortByIndex(index, desc) { 72 | var key = cols[index].key, 73 | sorter = function (a, b) { 74 | a = a.data[key]; 75 | b = b.data[key]; 76 | return a < b ? -1 : a > b ? 1 : 0; 77 | }, 78 | finalSorter = sorter, 79 | tableBody = document.querySelector('.coverage-summary tbody'), 80 | rowNodes = tableBody.querySelectorAll('tr'), 81 | rows = [], 82 | i; 83 | 84 | if (desc) { 85 | finalSorter = function (a, b) { 86 | return -1 * sorter(a, b); 87 | }; 88 | } 89 | 90 | for (i = 0; i < rowNodes.length; i += 1) { 91 | rows.push(rowNodes[i]); 92 | tableBody.removeChild(rowNodes[i]); 93 | } 94 | 95 | rows.sort(finalSorter); 96 | 97 | for (i = 0; i < rows.length; i += 1) { 98 | tableBody.appendChild(rows[i]); 99 | } 100 | } 101 | // removes sort indicators for current column being sorted 102 | function removeSortIndicators() { 103 | var col = getNthColumn(currentSort.index), 104 | cls = col.className; 105 | 106 | cls = cls.replace(/ sorted$/, '').replace(/ sorted-desc$/, ''); 107 | col.className = cls; 108 | } 109 | // adds sort indicators for current column being sorted 110 | function addSortIndicators() { 111 | getNthColumn(currentSort.index).className += currentSort.desc ? ' sorted-desc' : ' sorted'; 112 | } 113 | // adds event listeners for all sorter widgets 114 | function enableUI() { 115 | var i, 116 | el, 117 | ithSorter = function ithSorter(i) { 118 | var col = cols[i]; 119 | 120 | return function () { 121 | var desc = col.defaultDescSort; 122 | 123 | if (currentSort.index === i) { 124 | desc = !currentSort.desc; 125 | } 126 | sortByIndex(i, desc); 127 | removeSortIndicators(); 128 | currentSort.index = i; 129 | currentSort.desc = desc; 130 | addSortIndicators(); 131 | }; 132 | }; 133 | for (i =0 ; i < cols.length; i += 1) { 134 | if (cols[i].sortable) { 135 | // add the click event handler on the th so users 136 | // dont have to click on those tiny arrows 137 | el = getNthColumn(i).querySelector('.sorter').parentElement; 138 | if (el.addEventListener) { 139 | el.addEventListener('click', ithSorter(i)); 140 | } else { 141 | el.attachEvent('onclick', ithSorter(i)); 142 | } 143 | } 144 | } 145 | } 146 | // adds sorting functionality to the UI 147 | return function () { 148 | if (!getTable()) { 149 | return; 150 | } 151 | cols = loadColumns(); 152 | loadData(cols); 153 | addSortIndicators(); 154 | enableUI(); 155 | }; 156 | })(); 157 | 158 | window.addEventListener('load', addSorting); 159 | -------------------------------------------------------------------------------- /coverage/lcov-report/ts-safe-access.ts.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Code coverage report for ts-safe-access.ts 5 | 6 | 7 | 8 | 9 | 14 | 15 | 16 |
17 |
18 |

19 | All files ts-safe-access.ts 20 |

21 |
22 |
23 | 81.82% 24 | Statements 25 | 9/11 26 |
27 |
28 | 100% 29 | Branches 30 | 4/4 31 |
32 |
33 | 100% 34 | Functions 35 | 2/2 36 |
37 |
38 | 81.82% 39 | Lines 40 | 9/11 41 |
42 |
43 |
44 |
45 | 

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134 | 
1
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/**
105 |  *
106 |  * @param {T} obj
107 |  * @param {(obj: T) => R} fn
108 |  * @param {R} defaultValue
109 |  * @returns {R}
110 |  */
111 | export function get<T, R>( obj : T, fn : ( obj : T ) => R, defaultValue? : R ) {
112 |   try {
113 |     const result = fn(obj);
114 |     return fn(obj) === undefined ? defaultValue : result;
115 |   } catch ( err ) {
116 |     return defaultValue;
117 |   }
118 | }
119 | 
120 | /**
121 |  *
122 |  * @param {T} obj
123 |  * @param {(o: T) => R} getFn
124 |  * @returns {any}
125 |  */
126 | export function has<T, R>( obj : T, getFn : ( o : T ) => R ) {
127 |   try {
128 |     let result = getFn(obj);
129 |     return result == undefined ? false : true;
130 |   } catch ( err ) {
131 |     return false;
132 |   }
133 | }
135 |
136 |
137 |
138 | Code coverage 139 | generated by istanbul at Tue Feb 06 2018 15:27:05 GMT+0200 (IST) 140 |
141 | 142 | 143 | 150 | 151 | 152 | 153 | -------------------------------------------------------------------------------- /coverage/lcov.info: -------------------------------------------------------------------------------- 1 | TN: 2 | SF:/Users/netanelbasal/www/ts-safe-access/src/index.ts 3 | FNF:0 4 | FNH:0 5 | DA:2,1 6 | DA:3,1 7 | DA:4,1 8 | DA:5,1 9 | LF:4 10 | LH:4 11 | BRF:0 12 | BRH:0 13 | end_of_record 14 | TN: 15 | SF:/Users/netanelbasal/www/ts-safe-access/src/ts-safe-access.ts 16 | FN:10,get 17 | FN:26,has 18 | FNF:2 19 | FNH:2 20 | FNDA:3,get 21 | FNDA:3,has 22 | DA:2,1 23 | DA:11,3 24 | DA:12,3 25 | DA:13,3 26 | DA:16,0 27 | DA:19,1 28 | DA:27,3 29 | DA:28,3 30 | DA:29,3 31 | DA:32,0 32 | DA:35,1 33 | LF:11 34 | LH:9 35 | BRDA:13,0,0,2 36 | BRDA:13,0,1,1 37 | BRDA:29,1,0,2 38 | BRDA:29,1,1,1 39 | BRF:4 40 | BRH:4 41 | end_of_record 42 | -------------------------------------------------------------------------------- /coverage/prettify.css: 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-------------------------------------------------------------------------------- /coverage/sort-arrow-sprite.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/salesforce/ts-safe-access/b3a30c5c2e644af021900dffd2f36c95d37b5052/coverage/sort-arrow-sprite.png -------------------------------------------------------------------------------- /coverage/sorter.js: -------------------------------------------------------------------------------- 1 | var addSorting = (function () { 2 | "use strict"; 3 | var cols, 4 | currentSort = { 5 | index: 0, 6 | desc: false 7 | }; 8 | 9 | // returns the summary table element 10 | function getTable() { return document.querySelector('.coverage-summary'); } 11 | // returns the thead element of the summary table 12 | function getTableHeader() { return getTable().querySelector('thead tr'); } 13 | // returns the tbody element of the summary table 14 | function getTableBody() { return getTable().querySelector('tbody'); } 15 | // returns the th element for nth column 16 | function getNthColumn(n) { return getTableHeader().querySelectorAll('th')[n]; } 17 | 18 | // loads all columns 19 | function loadColumns() { 20 | var colNodes = getTableHeader().querySelectorAll('th'), 21 | colNode, 22 | cols = [], 23 | col, 24 | i; 25 | 26 | for (i = 0; i < colNodes.length; i += 1) { 27 | colNode = colNodes[i]; 28 | col = { 29 | key: colNode.getAttribute('data-col'), 30 | sortable: !colNode.getAttribute('data-nosort'), 31 | type: colNode.getAttribute('data-type') || 'string' 32 | }; 33 | cols.push(col); 34 | if (col.sortable) { 35 | col.defaultDescSort = col.type === 'number'; 36 | colNode.innerHTML = colNode.innerHTML + ''; 37 | } 38 | } 39 | return cols; 40 | } 41 | // attaches a data attribute to every tr element with an object 42 | // of data values keyed by column name 43 | function loadRowData(tableRow) { 44 | var tableCols = tableRow.querySelectorAll('td'), 45 | colNode, 46 | col, 47 | data = {}, 48 | i, 49 | val; 50 | for (i = 0; i < tableCols.length; i += 1) { 51 | colNode = tableCols[i]; 52 | col = cols[i]; 53 | val = colNode.getAttribute('data-value'); 54 | if (col.type === 'number') { 55 | val = Number(val); 56 | } 57 | data[col.key] = val; 58 | } 59 | return data; 60 | } 61 | // loads all row data 62 | function loadData() { 63 | var rows = getTableBody().querySelectorAll('tr'), 64 | i; 65 | 66 | for (i = 0; i < rows.length; i += 1) { 67 | rows[i].data = loadRowData(rows[i]); 68 | } 69 | } 70 | // sorts the table using the data for the ith column 71 | function sortByIndex(index, desc) { 72 | var key = cols[index].key, 73 | sorter = function (a, b) { 74 | a = a.data[key]; 75 | b = b.data[key]; 76 | return a < b ? -1 : a > b ? 1 : 0; 77 | }, 78 | finalSorter = sorter, 79 | tableBody = document.querySelector('.coverage-summary tbody'), 80 | rowNodes = tableBody.querySelectorAll('tr'), 81 | rows = [], 82 | i; 83 | 84 | if (desc) { 85 | finalSorter = function (a, b) { 86 | return -1 * sorter(a, b); 87 | }; 88 | } 89 | 90 | for (i = 0; i < rowNodes.length; i += 1) { 91 | rows.push(rowNodes[i]); 92 | tableBody.removeChild(rowNodes[i]); 93 | } 94 | 95 | rows.sort(finalSorter); 96 | 97 | for (i = 0; i < rows.length; i += 1) { 98 | tableBody.appendChild(rows[i]); 99 | } 100 | } 101 | // removes sort indicators for current column being sorted 102 | function removeSortIndicators() { 103 | var col = getNthColumn(currentSort.index), 104 | cls = col.className; 105 | 106 | cls = cls.replace(/ sorted$/, '').replace(/ sorted-desc$/, ''); 107 | col.className = cls; 108 | } 109 | // adds sort indicators for current column being sorted 110 | function addSortIndicators() { 111 | getNthColumn(currentSort.index).className += currentSort.desc ? ' sorted-desc' : ' sorted'; 112 | } 113 | // adds event listeners for all sorter widgets 114 | function enableUI() { 115 | var i, 116 | el, 117 | ithSorter = function ithSorter(i) { 118 | var col = cols[i]; 119 | 120 | return function () { 121 | var desc = col.defaultDescSort; 122 | 123 | if (currentSort.index === i) { 124 | desc = !currentSort.desc; 125 | } 126 | sortByIndex(i, desc); 127 | removeSortIndicators(); 128 | currentSort.index = i; 129 | currentSort.desc = desc; 130 | addSortIndicators(); 131 | }; 132 | }; 133 | for (i =0 ; i < cols.length; i += 1) { 134 | if (cols[i].sortable) { 135 | // add the click event handler on the th so users 136 | // dont have to click on those tiny arrows 137 | el = getNthColumn(i).querySelector('.sorter').parentElement; 138 | if (el.addEventListener) { 139 | el.addEventListener('click', ithSorter(i)); 140 | } else { 141 | el.attachEvent('onclick', ithSorter(i)); 142 | } 143 | } 144 | } 145 | } 146 | // adds sorting functionality to the UI 147 | return function () { 148 | if (!getTable()) { 149 | return; 150 | } 151 | cols = loadColumns(); 152 | loadData(cols); 153 | addSortIndicators(); 154 | enableUI(); 155 | }; 156 | })(); 157 | 158 | window.addEventListener('load', addSorting); 159 | -------------------------------------------------------------------------------- /coverage/ts-safe-access.ts.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | Code coverage report for ts-safe-access.ts 5 | 6 | 7 | 8 | 9 | 14 | 15 | 16 |
17 |
18 |

19 | All files ts-safe-access.ts 20 |

21 |
22 |
23 | 81.82% 24 | Statements 25 | 9/11 26 |
27 |
28 | 100% 29 | Branches 30 | 4/4 31 |
32 |
33 | 100% 34 | Functions 35 | 2/2 36 |
37 |
38 | 81.82% 39 | Lines 40 | 9/11 41 |
42 |
43 |
44 |
45 | 

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137 | 
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/**
107 |  *
108 |  * @param {T} obj
109 |  * @param {(obj: T) => R} fn
110 |  * @param {R} defaultValue
111 |  * @returns {R}
112 |  */
113 | export function get<T, R>( obj : T, fn : ( obj : T ) => R, defaultValue? : R ) {
114 |   try {
115 |     const result = fn(obj);
116 |     return fn(obj) === undefined ? defaultValue : result;
117 |   } catch ( err ) {
118 |     return defaultValue;
119 |   }
120 | }
121 | 
122 |  
123 | /**
124 |  *
125 |  * @param {T} obj
126 |  * @param {(o: T) => R} getFn
127 |  * @returns {any}
128 |  */
129 | export function has<T, R>( obj : T, getFn : ( o : T ) => R ) {
130 |   try {
131 |     let result = getFn(obj);
132 |     return result == undefined ? false : true;
133 |   } catch ( err ) {
134 |     return false;
135 |   }
136 | }
138 |
139 |
140 |
141 | Code coverage 142 | generated by istanbul at Tue Feb 06 2018 19:39:35 GMT+0200 (IST) 143 |
144 | 145 | 146 | 153 | 154 | 155 | 156 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "@datorama/ts-safe-access", 3 | "version": "1.1.1", 4 | "main": "dist/index.js", 5 | "description": "🍭 It's Like Lodash get with the 💪 of Typescript", 6 | "license": "MIT", 7 | "scripts": { 8 | "test": "jest", 9 | "build": "rm -rf ./dist && tsc", 10 | "prepublish": "rm -rf ./dist && npm run build" 11 | }, 12 | "homepage": "https://github.com/datorama/ts-safe-access", 13 | "bugs": "https://github.com/datorama/ts-safe-access/issues", 14 | "jest": { 15 | "coverageReporters": [ 16 | "json-summary" 17 | ], 18 | "moduleFileExtensions": [ 19 | "ts", 20 | "js" 21 | ], 22 | "transform": { 23 | "\\.(ts)$": "ts-jest" 24 | }, 25 | "testRegex": "/__tests__/.*\\.(ts|js)$" 26 | }, 27 | "keywords": [ 28 | "safe access", 29 | "safe access nested", 30 | "safe access typescript", 31 | "lodash get typescript" 32 | ], 33 | "typings": "./dist/index.d.ts", 34 | "maintainers": [ 35 | "Netanel Basal", 36 | "Shahar Kazaz" 37 | ], 38 | "repository": { 39 | "type": "git", 40 | "url": "https://github.com/datorama/ts-safe-access" 41 | }, 42 | "devDependencies": { 43 | "@types/jest": "^24.0.11", 44 | "jest": "^24.5.0", 45 | "ts-jest": "^24.0.1", 46 | "typescript": "^3.4.1" 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /src/index.ts: -------------------------------------------------------------------------------- 1 | export { get, has } from './ts-safe-access'; -------------------------------------------------------------------------------- /src/ts-safe-access.ts: -------------------------------------------------------------------------------- 1 | /** 2 | * 3 | * @param {T} obj 4 | * @param {(obj: T) => R} fn 5 | * @param {R} defaultValue 6 | * @param {boolean} excludeNull 7 | * @returns {R} 8 | */ 9 | export function get(obj: T, fn: (obj: T) => R, defaultValue?: R, excludeNull = false) { 10 | try { 11 | let result = fn(obj); 12 | result = excludeNull ? (result === null ? defaultValue : result) : result; 13 | return result === undefined ? defaultValue : result; 14 | } catch (err) { 15 | return defaultValue; 16 | } 17 | } 18 | 19 | 20 | /** 21 | * 22 | * @param {T} obj 23 | * @param {(o: T) => R} getFn 24 | * @returns {any} 25 | */ 26 | export function has(obj: T, getFn: (o: T) => R) { 27 | try { 28 | let result = getFn(obj); 29 | return result !== undefined; 30 | } catch (err) { 31 | return false; 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "module": "es2015", 4 | "target": "es5", 5 | "noImplicitAny": false, 6 | "sourceMap": true, 7 | "moduleResolution": "node", 8 | "experimentalDecorators": true, 9 | "emitDecoratorMetadata": true, 10 | "declaration": true, 11 | "outDir": "dist/", 12 | "lib": [ 13 | "dom", 14 | "es2015", 15 | "es2017" 16 | ] 17 | }, 18 | "exclude": [ 19 | "node_modules", 20 | "lib", 21 | "__tests__" 22 | ] 23 | } --------------------------------------------------------------------------------