1 | const { fixingNodes } = require('./es-beautifier-common.js');
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2 |
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3 | const create = (context) => {
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4 | const option = context.options[0] || {
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5 | allowSingleLine: true,
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6 | maxLenInSingleLine: 80,
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7 | };
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8 | const allowSingleLine = option.allowSingleLine;
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9 | const maxElements = option.maxElementsInSingleLine;
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10 | const maxLen = option.maxLenInSingleLine;
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11 |
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12 | const sourceCode = context.getSourceCode();
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13 |
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14 | const enterJSXElement = (node) => {
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15 | if (allowSingleLine &&
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16 | node.loc.start.line === node.loc.end.line &&
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17 | (!maxElements || node.elements.length <= maxElements) &&
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18 | (!maxLen || sourceCode.lines[node.loc.end.line - 1].length < maxLen)) {
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19 |
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20 | return;
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21 | }
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22 |
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23 | let parent = node.parent;
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24 | while (parent && parent.loc.start.line === node.loc.start.line) {
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25 | if (fixingNodes.has(parent)) {
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26 |
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27 | return;
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28 | }
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29 | parent = parent.parent;
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30 | }
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31 |
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32 | const children = node.children.filter(x => x.type === 'JSXElement');
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33 |
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34 | let fixed = false;
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35 | let prev = null;
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36 | children.forEach((curr) => {
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37 | if (prev && prev.loc.end.line === curr.loc.start.line) {
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38 | context.report({
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39 | node,
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40 | message: 'Element in JSX should be on a new line.',
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41 | loc: curr.loc.start,
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42 | fix: fixer => fixer.insertTextBefore(curr, '\n'),
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43 | });
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44 | fixed = true;
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45 | }
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46 | prev = curr;
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47 | });
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48 |
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49 | if (children.length) {
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50 | const firstChild = children[0];
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51 | const lastChild = children[children.length - 1];
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52 | if (node.openingElement.loc.end.line === firstChild.loc.start.line) {
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53 | context.report({
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54 | node,
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55 | message: 'Element in JSX should be on a new line.',
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56 | loc: node.loc.start,
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57 | fix: fixer => fixer.insertTextAfter(node.openingElement, '\n'),
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58 | });
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59 | fixed = true;
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60 | }
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61 | if (node.closingElement.loc.start.line === lastChild.loc.end.line) {
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62 | context.report({
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63 | node,
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64 | message: 'Element in JSX should be on a new line.',
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65 | loc: node.loc.start,
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66 | fix: fixer => fixer.insertTextBefore(node.closingElement, '\n'),
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67 | });
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68 | fixed = true;
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69 | }
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70 | }
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71 |
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72 | const openingParen = sourceCode.getTokenBefore(node.openingElement);
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73 | if (openingParen &&
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74 | openingParen.value === '(' &&
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75 | openingParen.loc.end.line === node.openingElement.loc.start.line) {
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76 | context.report({
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77 | node,
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78 | message: 'Element in JSX should be on a new line.',
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79 | loc: node.loc.start,
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80 | fix: fixer => fixer.insertTextBefore(node.openingElement, '\n'),
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81 | });
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82 | fixed = true;
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83 | }
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84 |
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85 | const closingParen = sourceCode.getTokenAfter(node.closingElement);
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86 | if (closingParen &&
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87 | closingParen.value === ')' &&
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88 | closingParen.loc.start.line === node.closingElement.loc.end.line) {
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89 | context.report({
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90 | node,
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91 | message: 'Element in JSX should be on a new line.',
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92 | loc: node.loc.end,
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93 | fix: fixer => fixer.insertTextAfter(node.closingElement, '\n'),
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94 | });
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95 | fixed = true;
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96 | }
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97 |
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98 | if (fixed) fixingNodes.add(node);
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99 | };
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100 |
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101 | return {
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102 | JSXElement: enterJSXElement,
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103 | };
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104 | };
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105 |
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106 | module.exports = {
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107 | meta: {
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108 | docs: {
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109 | description: 'enforce multi-line elements in JSX',
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110 | category: 'Stylistic Issues',
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111 | },
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112 | fixable: 'whitespace',
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113 | schema: [{
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114 | type: 'object',
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115 | properties: {
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116 | allowSingleLine: { type: 'boolean' },
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117 | maxElementsInSingleLine: { type: 'integer' },
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118 | maxLenInSingleLine: { type: 'integer' },
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119 | },
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120 | additionalProperties: false,
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121 | }],
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122 | },
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123 | create,
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124 | };
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