source: trip-planner-front/node_modules/braces/lib/utils.js@ b738035

Last change on this file since b738035 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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File size: 2.4 KB
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1'use strict';
2
3exports.isInteger = num => {
4 if (typeof num === 'number') {
5 return Number.isInteger(num);
6 }
7 if (typeof num === 'string' && num.trim() !== '') {
8 return Number.isInteger(Number(num));
9 }
10 return false;
11};
12
13/**
14 * Find a node of the given type
15 */
16
17exports.find = (node, type) => node.nodes.find(node => node.type === type);
18
19/**
20 * Find a node of the given type
21 */
22
23exports.exceedsLimit = (min, max, step = 1, limit) => {
24 if (limit === false) return false;
25 if (!exports.isInteger(min) || !exports.isInteger(max)) return false;
26 return ((Number(max) - Number(min)) / Number(step)) >= limit;
27};
28
29/**
30 * Escape the given node with '\\' before node.value
31 */
32
33exports.escapeNode = (block, n = 0, type) => {
34 let node = block.nodes[n];
35 if (!node) return;
36
37 if ((type && node.type === type) || node.type === 'open' || node.type === 'close') {
38 if (node.escaped !== true) {
39 node.value = '\\' + node.value;
40 node.escaped = true;
41 }
42 }
43};
44
45/**
46 * Returns true if the given brace node should be enclosed in literal braces
47 */
48
49exports.encloseBrace = node => {
50 if (node.type !== 'brace') return false;
51 if ((node.commas >> 0 + node.ranges >> 0) === 0) {
52 node.invalid = true;
53 return true;
54 }
55 return false;
56};
57
58/**
59 * Returns true if a brace node is invalid.
60 */
61
62exports.isInvalidBrace = block => {
63 if (block.type !== 'brace') return false;
64 if (block.invalid === true || block.dollar) return true;
65 if ((block.commas >> 0 + block.ranges >> 0) === 0) {
66 block.invalid = true;
67 return true;
68 }
69 if (block.open !== true || block.close !== true) {
70 block.invalid = true;
71 return true;
72 }
73 return false;
74};
75
76/**
77 * Returns true if a node is an open or close node
78 */
79
80exports.isOpenOrClose = node => {
81 if (node.type === 'open' || node.type === 'close') {
82 return true;
83 }
84 return node.open === true || node.close === true;
85};
86
87/**
88 * Reduce an array of text nodes.
89 */
90
91exports.reduce = nodes => nodes.reduce((acc, node) => {
92 if (node.type === 'text') acc.push(node.value);
93 if (node.type === 'range') node.type = 'text';
94 return acc;
95}, []);
96
97/**
98 * Flatten an array
99 */
100
101exports.flatten = (...args) => {
102 const result = [];
103 const flat = arr => {
104 for (let i = 0; i < arr.length; i++) {
105 let ele = arr[i];
106 Array.isArray(ele) ? flat(ele, result) : ele !== void 0 && result.push(ele);
107 }
108 return result;
109 };
110 flat(args);
111 return result;
112};
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