1 | 'use strict';
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2 | var FREEZING = require('../internals/freezing');
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3 | var $ = require('../internals/export');
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4 | var makeBuiltIn = require('../internals/make-built-in');
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5 | var uncurryThis = require('../internals/function-uncurry-this');
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6 | var apply = require('../internals/function-apply');
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7 | var anObject = require('../internals/an-object');
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8 | var toObject = require('../internals/to-object');
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9 | var isCallable = require('../internals/is-callable');
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10 | var lengthOfArrayLike = require('../internals/length-of-array-like');
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11 | var defineProperty = require('../internals/object-define-property').f;
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12 | var createArrayFromList = require('../internals/array-slice');
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13 | var WeakMapHelpers = require('../internals/weak-map-helpers');
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14 | var cooked = require('../internals/string-cooked');
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15 | var parse = require('../internals/string-parse');
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16 | var whitespaces = require('../internals/whitespaces');
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17 |
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18 | var DedentMap = new WeakMapHelpers.WeakMap();
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19 | var weakMapGet = WeakMapHelpers.get;
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20 | var weakMapHas = WeakMapHelpers.has;
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21 | var weakMapSet = WeakMapHelpers.set;
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22 |
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23 | var $Array = Array;
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24 | var $TypeError = TypeError;
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25 | // eslint-disable-next-line es/no-object-freeze -- safe
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26 | var freeze = Object.freeze || Object;
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27 | // eslint-disable-next-line es/no-object-isfrozen -- safe
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28 | var isFrozen = Object.isFrozen;
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29 | var min = Math.min;
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30 | var charAt = uncurryThis(''.charAt);
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31 | var stringSlice = uncurryThis(''.slice);
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32 | var split = uncurryThis(''.split);
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33 | var exec = uncurryThis(/./.exec);
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34 |
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35 | var NEW_LINE = /([\n\u2028\u2029]|\r\n?)/g;
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36 | var LEADING_WHITESPACE = RegExp('^[' + whitespaces + ']*');
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37 | var NON_WHITESPACE = RegExp('[^' + whitespaces + ']');
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38 | var INVALID_TAG = 'Invalid tag';
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39 | var INVALID_OPENING_LINE = 'Invalid opening line';
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40 | var INVALID_CLOSING_LINE = 'Invalid closing line';
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41 |
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42 | var dedentTemplateStringsArray = function (template) {
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43 | var rawInput = template.raw;
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44 | // https://github.com/tc39/proposal-string-dedent/issues/75
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45 | if (FREEZING && !isFrozen(rawInput)) throw new $TypeError('Raw template should be frozen');
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46 | if (weakMapHas(DedentMap, rawInput)) return weakMapGet(DedentMap, rawInput);
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47 | var raw = dedentStringsArray(rawInput);
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48 | var cookedArr = cookStrings(raw);
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49 | defineProperty(cookedArr, 'raw', {
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50 | value: freeze(raw)
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51 | });
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52 | freeze(cookedArr);
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53 | weakMapSet(DedentMap, rawInput, cookedArr);
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54 | return cookedArr;
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55 | };
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56 |
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57 | var dedentStringsArray = function (template) {
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58 | var t = toObject(template);
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59 | var length = lengthOfArrayLike(t);
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60 | var blocks = $Array(length);
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61 | var dedented = $Array(length);
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62 | var i = 0;
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63 | var lines, common, quasi, k;
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64 |
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65 | if (!length) throw new $TypeError(INVALID_TAG);
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66 |
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67 | for (; i < length; i++) {
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68 | var element = t[i];
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69 | if (typeof element == 'string') blocks[i] = split(element, NEW_LINE);
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70 | else throw new $TypeError(INVALID_TAG);
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71 | }
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72 |
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73 | for (i = 0; i < length; i++) {
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74 | var lastSplit = i + 1 === length;
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75 | lines = blocks[i];
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76 | if (i === 0) {
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77 | if (lines.length === 1 || lines[0].length > 0) {
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78 | throw new $TypeError(INVALID_OPENING_LINE);
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79 | }
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80 | lines[1] = '';
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81 | }
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82 | if (lastSplit) {
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83 | if (lines.length === 1 || exec(NON_WHITESPACE, lines[lines.length - 1])) {
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84 | throw new $TypeError(INVALID_CLOSING_LINE);
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85 | }
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86 | lines[lines.length - 2] = '';
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87 | lines[lines.length - 1] = '';
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88 | }
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89 | // eslint-disable-next-line sonarjs/no-redundant-assignments -- false positive, https://github.com/SonarSource/SonarJS/issues/4767
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90 | for (var j = 2; j < lines.length; j += 2) {
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91 | var text = lines[j];
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92 | var lineContainsTemplateExpression = j + 1 === lines.length && !lastSplit;
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93 | var leading = exec(LEADING_WHITESPACE, text)[0];
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94 | if (!lineContainsTemplateExpression && leading.length === text.length) {
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95 | lines[j] = '';
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96 | continue;
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97 | }
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98 | common = commonLeadingIndentation(leading, common);
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99 | }
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100 | }
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101 |
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102 | var count = common ? common.length : 0;
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103 |
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104 | for (i = 0; i < length; i++) {
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105 | lines = blocks[i];
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106 | quasi = lines[0];
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107 | k = 1;
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108 | for (; k < lines.length; k += 2) {
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109 | quasi += lines[k] + stringSlice(lines[k + 1], count);
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110 | }
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111 | dedented[i] = quasi;
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112 | }
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113 |
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114 | return dedented;
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115 | };
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116 |
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117 | var commonLeadingIndentation = function (a, b) {
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118 | if (b === undefined || a === b) return a;
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119 | var i = 0;
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120 | for (var len = min(a.length, b.length); i < len; i++) {
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121 | if (charAt(a, i) !== charAt(b, i)) break;
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122 | }
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123 | return stringSlice(a, 0, i);
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124 | };
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125 |
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126 | var cookStrings = function (raw) {
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127 | var i = 0;
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128 | var length = raw.length;
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129 | var result = $Array(length);
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130 | for (; i < length; i++) {
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131 | result[i] = parse(raw[i]);
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132 | } return result;
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133 | };
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134 |
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135 | var makeDedentTag = function (tag) {
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136 | return makeBuiltIn(function (template /* , ...substitutions */) {
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137 | var args = createArrayFromList(arguments);
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138 | args[0] = dedentTemplateStringsArray(anObject(template));
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139 | return apply(tag, this, args);
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140 | }, '');
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141 | };
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142 |
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143 | var cookedDedentTag = makeDedentTag(cooked);
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144 |
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145 | // `String.dedent` method
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146 | // https://github.com/tc39/proposal-string-dedent
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147 | $({ target: 'String', stat: true, forced: true }, {
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148 | dedent: function dedent(templateOrFn /* , ...substitutions */) {
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149 | anObject(templateOrFn);
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150 | if (isCallable(templateOrFn)) return makeDedentTag(templateOrFn);
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151 | return apply(cookedDedentTag, this, arguments);
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152 | }
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153 | });
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