1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.default = populatePlaceholders;
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7 |
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8 | var t = _interopRequireWildcard(require("@babel/types"));
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9 |
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10 | function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
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11 |
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12 | function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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13 |
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14 | function populatePlaceholders(metadata, replacements) {
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15 | const ast = t.cloneNode(metadata.ast);
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16 |
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17 | if (replacements) {
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18 | metadata.placeholders.forEach(placeholder => {
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19 | if (!Object.prototype.hasOwnProperty.call(replacements, placeholder.name)) {
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20 | const placeholderName = placeholder.name;
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21 | throw new Error(`Error: No substitution given for "${placeholderName}". If this is not meant to be a
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22 | placeholder you may want to consider passing one of the following options to @babel/template:
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23 | - { placeholderPattern: false, placeholderWhitelist: new Set(['${placeholderName}'])}
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24 | - { placeholderPattern: /^${placeholderName}$/ }`);
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25 | }
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26 | });
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27 | Object.keys(replacements).forEach(key => {
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28 | if (!metadata.placeholderNames.has(key)) {
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29 | throw new Error(`Unknown substitution "${key}" given`);
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30 | }
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31 | });
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32 | }
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33 |
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34 | metadata.placeholders.slice().reverse().forEach(placeholder => {
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35 | try {
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36 | applyReplacement(placeholder, ast, replacements && replacements[placeholder.name] || null);
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37 | } catch (e) {
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38 | e.message = `@babel/template placeholder "${placeholder.name}": ${e.message}`;
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39 | throw e;
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40 | }
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41 | });
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42 | return ast;
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43 | }
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44 |
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45 | function applyReplacement(placeholder, ast, replacement) {
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46 | if (placeholder.isDuplicate) {
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47 | if (Array.isArray(replacement)) {
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48 | replacement = replacement.map(node => t.cloneNode(node));
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49 | } else if (typeof replacement === "object") {
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50 | replacement = t.cloneNode(replacement);
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51 | }
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52 | }
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53 |
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54 | const {
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55 | parent,
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56 | key,
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57 | index
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58 | } = placeholder.resolve(ast);
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59 |
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60 | if (placeholder.type === "string") {
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61 | if (typeof replacement === "string") {
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62 | replacement = t.stringLiteral(replacement);
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63 | }
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64 |
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65 | if (!replacement || !t.isStringLiteral(replacement)) {
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66 | throw new Error("Expected string substitution");
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67 | }
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68 | } else if (placeholder.type === "statement") {
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69 | if (index === undefined) {
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70 | if (!replacement) {
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71 | replacement = t.emptyStatement();
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72 | } else if (Array.isArray(replacement)) {
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73 | replacement = t.blockStatement(replacement);
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74 | } else if (typeof replacement === "string") {
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75 | replacement = t.expressionStatement(t.identifier(replacement));
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76 | } else if (!t.isStatement(replacement)) {
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77 | replacement = t.expressionStatement(replacement);
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78 | }
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79 | } else {
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80 | if (replacement && !Array.isArray(replacement)) {
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81 | if (typeof replacement === "string") {
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82 | replacement = t.identifier(replacement);
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83 | }
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84 |
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85 | if (!t.isStatement(replacement)) {
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86 | replacement = t.expressionStatement(replacement);
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87 | }
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88 | }
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89 | }
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90 | } else if (placeholder.type === "param") {
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91 | if (typeof replacement === "string") {
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92 | replacement = t.identifier(replacement);
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93 | }
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94 |
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95 | if (index === undefined) throw new Error("Assertion failure.");
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96 | } else {
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97 | if (typeof replacement === "string") {
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98 | replacement = t.identifier(replacement);
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99 | }
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100 |
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101 | if (Array.isArray(replacement)) {
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102 | throw new Error("Cannot replace single expression with an array.");
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103 | }
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104 | }
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105 |
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106 | if (index === undefined) {
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107 | t.validate(parent, key, replacement);
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108 | parent[key] = replacement;
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109 | } else {
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110 | const items = parent[key].slice();
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111 |
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112 | if (placeholder.type === "statement" || placeholder.type === "param") {
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113 | if (replacement == null) {
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114 | items.splice(index, 1);
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115 | } else if (Array.isArray(replacement)) {
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116 | items.splice(index, 1, ...replacement);
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117 | } else {
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118 | items[index] = replacement;
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119 | }
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120 | } else {
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121 | items[index] = replacement;
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122 | }
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123 |
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124 | t.validate(parent, key, items);
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125 | parent[key] = items;
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126 | }
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127 | } |
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