| 1 | 'use strict';
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| 2 |
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| 3 | Object.defineProperty(exports, '__esModule', { value: true });
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| 4 |
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| 5 | function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
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| 6 |
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| 7 | var path = require('path');
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| 8 | var pm = _interopDefault(require('picomatch'));
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| 9 |
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| 10 | const addExtension = function addExtension(filename, ext = '.js') {
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| 11 | let result = `${filename}`;
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| 12 | if (!path.extname(filename))
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| 13 | result += ext;
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| 14 | return result;
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| 15 | };
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| 16 |
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| 17 | function walk(ast, { enter, leave }) {
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| 18 | return visit(ast, null, enter, leave);
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| 19 | }
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| 20 |
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| 21 | let should_skip = false;
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| 22 | let should_remove = false;
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| 23 | let replacement = null;
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| 24 | const context = {
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| 25 | skip: () => should_skip = true,
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| 26 | remove: () => should_remove = true,
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| 27 | replace: (node) => replacement = node
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| 28 | };
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| 29 |
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| 30 | function replace(parent, prop, index, node) {
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| 31 | if (parent) {
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| 32 | if (index !== null) {
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| 33 | parent[prop][index] = node;
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| 34 | } else {
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| 35 | parent[prop] = node;
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| 36 | }
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| 37 | }
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| 38 | }
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| 39 |
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| 40 | function remove(parent, prop, index) {
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| 41 | if (parent) {
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| 42 | if (index !== null) {
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| 43 | parent[prop].splice(index, 1);
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| 44 | } else {
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| 45 | delete parent[prop];
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| 46 | }
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| 47 | }
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| 48 | }
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| 49 |
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| 50 | function visit(
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| 51 | node,
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| 52 | parent,
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| 53 | enter,
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| 54 | leave,
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| 55 | prop,
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| 56 | index
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| 57 | ) {
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| 58 | if (node) {
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| 59 | if (enter) {
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| 60 | const _should_skip = should_skip;
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| 61 | const _should_remove = should_remove;
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| 62 | const _replacement = replacement;
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| 63 | should_skip = false;
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| 64 | should_remove = false;
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| 65 | replacement = null;
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| 66 |
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| 67 | enter.call(context, node, parent, prop, index);
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| 68 |
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| 69 | if (replacement) {
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| 70 | node = replacement;
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| 71 | replace(parent, prop, index, node);
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| 72 | }
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| 73 |
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| 74 | if (should_remove) {
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| 75 | remove(parent, prop, index);
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| 76 | }
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| 77 |
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| 78 | const skipped = should_skip;
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| 79 | const removed = should_remove;
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| 80 |
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| 81 | should_skip = _should_skip;
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| 82 | should_remove = _should_remove;
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| 83 | replacement = _replacement;
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| 84 |
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| 85 | if (skipped) return node;
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| 86 | if (removed) return null;
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| 87 | }
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| 88 |
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| 89 | for (const key in node) {
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| 90 | const value = (node )[key];
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| 91 |
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| 92 | if (typeof value !== 'object') {
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| 93 | continue;
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| 94 | }
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| 95 |
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| 96 | else if (Array.isArray(value)) {
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| 97 | for (let j = 0, k = 0; j < value.length; j += 1, k += 1) {
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| 98 | if (value[j] !== null && typeof value[j].type === 'string') {
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| 99 | if (!visit(value[j], node, enter, leave, key, k)) {
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| 100 | // removed
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| 101 | j--;
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| 102 | }
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| 103 | }
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| 104 | }
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| 105 | }
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| 106 |
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| 107 | else if (value !== null && typeof value.type === 'string') {
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| 108 | visit(value, node, enter, leave, key, null);
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | if (leave) {
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| 113 | const _replacement = replacement;
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| 114 | const _should_remove = should_remove;
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| 115 | replacement = null;
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| 116 | should_remove = false;
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| 117 |
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| 118 | leave.call(context, node, parent, prop, index);
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| 119 |
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| 120 | if (replacement) {
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| 121 | node = replacement;
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| 122 | replace(parent, prop, index, node);
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| 123 | }
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| 124 |
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| 125 | if (should_remove) {
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| 126 | remove(parent, prop, index);
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| 127 | }
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| 128 |
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| 129 | const removed = should_remove;
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| 130 |
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| 131 | replacement = _replacement;
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| 132 | should_remove = _should_remove;
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| 133 |
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| 134 | if (removed) return null;
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| 135 | }
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| 136 | }
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| 137 |
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| 138 | return node;
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| 139 | }
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| 140 |
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| 141 | const extractors = {
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| 142 | ArrayPattern(names, param) {
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| 143 | for (const element of param.elements) {
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| 144 | if (element)
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| 145 | extractors[element.type](names, element);
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| 146 | }
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| 147 | },
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| 148 | AssignmentPattern(names, param) {
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| 149 | extractors[param.left.type](names, param.left);
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| 150 | },
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| 151 | Identifier(names, param) {
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| 152 | names.push(param.name);
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| 153 | },
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| 154 | MemberExpression() { },
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| 155 | ObjectPattern(names, param) {
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| 156 | for (const prop of param.properties) {
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| 157 | // @ts-ignore Typescript reports that this is not a valid type
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| 158 | if (prop.type === 'RestElement') {
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| 159 | extractors.RestElement(names, prop);
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| 160 | }
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| 161 | else {
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| 162 | extractors[prop.value.type](names, prop.value);
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| 163 | }
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| 164 | }
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| 165 | },
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| 166 | RestElement(names, param) {
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| 167 | extractors[param.argument.type](names, param.argument);
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| 168 | }
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| 169 | };
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| 170 | const extractAssignedNames = function extractAssignedNames(param) {
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| 171 | const names = [];
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| 172 | extractors[param.type](names, param);
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| 173 | return names;
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| 174 | };
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| 175 |
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| 176 | const blockDeclarations = {
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| 177 | const: true,
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| 178 | let: true
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| 179 | };
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| 180 | class Scope {
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| 181 | constructor(options = {}) {
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| 182 | this.parent = options.parent;
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| 183 | this.isBlockScope = !!options.block;
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| 184 | this.declarations = Object.create(null);
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| 185 | if (options.params) {
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| 186 | options.params.forEach((param) => {
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| 187 | extractAssignedNames(param).forEach((name) => {
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| 188 | this.declarations[name] = true;
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| 189 | });
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| 190 | });
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| 191 | }
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| 192 | }
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| 193 | addDeclaration(node, isBlockDeclaration, isVar) {
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| 194 | if (!isBlockDeclaration && this.isBlockScope) {
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| 195 | // it's a `var` or function node, and this
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| 196 | // is a block scope, so we need to go up
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| 197 | this.parent.addDeclaration(node, isBlockDeclaration, isVar);
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| 198 | }
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| 199 | else if (node.id) {
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| 200 | extractAssignedNames(node.id).forEach((name) => {
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| 201 | this.declarations[name] = true;
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| 202 | });
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| 203 | }
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| 204 | }
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| 205 | contains(name) {
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| 206 | return this.declarations[name] || (this.parent ? this.parent.contains(name) : false);
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| 207 | }
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| 208 | }
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| 209 | const attachScopes = function attachScopes(ast, propertyName = 'scope') {
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| 210 | let scope = new Scope();
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| 211 | walk(ast, {
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| 212 | enter(n, parent) {
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| 213 | const node = n;
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| 214 | // function foo () {...}
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| 215 | // class Foo {...}
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| 216 | if (/(Function|Class)Declaration/.test(node.type)) {
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| 217 | scope.addDeclaration(node, false, false);
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| 218 | }
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| 219 | // var foo = 1
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| 220 | if (node.type === 'VariableDeclaration') {
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| 221 | const { kind } = node;
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| 222 | const isBlockDeclaration = blockDeclarations[kind];
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| 223 | // don't add const/let declarations in the body of a for loop #113
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| 224 | const parentType = parent ? parent.type : '';
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| 225 | if (!(isBlockDeclaration && /ForOfStatement/.test(parentType))) {
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| 226 | node.declarations.forEach((declaration) => {
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| 227 | scope.addDeclaration(declaration, isBlockDeclaration, true);
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| 228 | });
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| 229 | }
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| 230 | }
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| 231 | let newScope;
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| 232 | // create new function scope
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| 233 | if (/Function/.test(node.type)) {
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| 234 | const func = node;
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| 235 | newScope = new Scope({
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| 236 | parent: scope,
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| 237 | block: false,
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| 238 | params: func.params
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| 239 | });
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| 240 | // named function expressions - the name is considered
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| 241 | // part of the function's scope
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| 242 | if (func.type === 'FunctionExpression' && func.id) {
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| 243 | newScope.addDeclaration(func, false, false);
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| 244 | }
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| 245 | }
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| 246 | // create new block scope
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| 247 | if (node.type === 'BlockStatement' && !/Function/.test(parent.type)) {
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| 248 | newScope = new Scope({
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| 249 | parent: scope,
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| 250 | block: true
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| 251 | });
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| 252 | }
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| 253 | // catch clause has its own block scope
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| 254 | if (node.type === 'CatchClause') {
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| 255 | newScope = new Scope({
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| 256 | parent: scope,
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| 257 | params: node.param ? [node.param] : [],
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| 258 | block: true
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| 259 | });
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| 260 | }
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| 261 | if (newScope) {
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| 262 | Object.defineProperty(node, propertyName, {
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| 263 | value: newScope,
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| 264 | configurable: true
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| 265 | });
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| 266 | scope = newScope;
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| 267 | }
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| 268 | },
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| 269 | leave(n) {
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| 270 | const node = n;
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| 271 | if (node[propertyName])
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| 272 | scope = scope.parent;
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| 273 | }
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| 274 | });
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| 275 | return scope;
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| 276 | };
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| 277 |
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| 278 | // Helper since Typescript can't detect readonly arrays with Array.isArray
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| 279 | function isArray(arg) {
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| 280 | return Array.isArray(arg);
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| 281 | }
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| 282 | function ensureArray(thing) {
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| 283 | if (isArray(thing))
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| 284 | return thing;
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| 285 | if (thing == null)
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| 286 | return [];
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| 287 | return [thing];
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| 288 | }
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| 289 |
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| 290 | function getMatcherString(id, resolutionBase) {
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| 291 | if (resolutionBase === false) {
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| 292 | return id;
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| 293 | }
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| 294 | // resolve('') is valid and will default to process.cwd()
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| 295 | const basePath = path.resolve(resolutionBase || '')
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| 296 | .split(path.sep)
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| 297 | .join('/')
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| 298 | // escape all possible (posix + win) path characters that might interfere with regex
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| 299 | .replace(/[-^$*+?.()|[\]{}]/g, '\\$&');
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| 300 | // Note that we use posix.join because:
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| 301 | // 1. the basePath has been normalized to use /
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| 302 | // 2. the incoming glob (id) matcher, also uses /
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| 303 | // otherwise Node will force backslash (\) on windows
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| 304 | return path.posix.join(basePath, id);
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| 305 | }
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| 306 | const createFilter = function createFilter(include, exclude, options) {
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| 307 | const resolutionBase = options && options.resolve;
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| 308 | const getMatcher = (id) => id instanceof RegExp
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| 309 | ? id
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| 310 | : {
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| 311 | test: (what) => {
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| 312 | // this refactor is a tad overly verbose but makes for easy debugging
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| 313 | const pattern = getMatcherString(id, resolutionBase);
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| 314 | const fn = pm(pattern, { dot: true });
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| 315 | const result = fn(what);
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| 316 | return result;
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| 317 | }
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| 318 | };
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| 319 | const includeMatchers = ensureArray(include).map(getMatcher);
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| 320 | const excludeMatchers = ensureArray(exclude).map(getMatcher);
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| 321 | return function result(id) {
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| 322 | if (typeof id !== 'string')
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| 323 | return false;
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| 324 | if (/\0/.test(id))
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| 325 | return false;
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| 326 | const pathId = id.split(path.sep).join('/');
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| 327 | for (let i = 0; i < excludeMatchers.length; ++i) {
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| 328 | const matcher = excludeMatchers[i];
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| 329 | if (matcher.test(pathId))
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| 330 | return false;
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| 331 | }
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| 332 | for (let i = 0; i < includeMatchers.length; ++i) {
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| 333 | const matcher = includeMatchers[i];
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| 334 | if (matcher.test(pathId))
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| 335 | return true;
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| 336 | }
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| 337 | return !includeMatchers.length;
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| 338 | };
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| 339 | };
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| 340 |
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| 341 | const reservedWords = 'break case class catch const continue debugger default delete do else export extends finally for function if import in instanceof let new return super switch this throw try typeof var void while with yield enum await implements package protected static interface private public';
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| 342 | const builtins = 'arguments Infinity NaN undefined null true false eval uneval isFinite isNaN parseFloat parseInt decodeURI decodeURIComponent encodeURI encodeURIComponent escape unescape Object Function Boolean Symbol Error EvalError InternalError RangeError ReferenceError SyntaxError TypeError URIError Number Math Date String RegExp Array Int8Array Uint8Array Uint8ClampedArray Int16Array Uint16Array Int32Array Uint32Array Float32Array Float64Array Map Set WeakMap WeakSet SIMD ArrayBuffer DataView JSON Promise Generator GeneratorFunction Reflect Proxy Intl';
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| 343 | const forbiddenIdentifiers = new Set(`${reservedWords} ${builtins}`.split(' '));
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| 344 | forbiddenIdentifiers.add('');
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| 345 | const makeLegalIdentifier = function makeLegalIdentifier(str) {
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| 346 | let identifier = str
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| 347 | .replace(/-(\w)/g, (_, letter) => letter.toUpperCase())
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| 348 | .replace(/[^$_a-zA-Z0-9]/g, '_');
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| 349 | if (/\d/.test(identifier[0]) || forbiddenIdentifiers.has(identifier)) {
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| 350 | identifier = `_${identifier}`;
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| 351 | }
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| 352 | return identifier || '_';
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| 353 | };
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| 354 |
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| 355 | function stringify(obj) {
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| 356 | return (JSON.stringify(obj) || 'undefined').replace(/[\u2028\u2029]/g, (char) => `\\u${`000${char.charCodeAt(0).toString(16)}`.slice(-4)}`);
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| 357 | }
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| 358 | function serializeArray(arr, indent, baseIndent) {
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| 359 | let output = '[';
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| 360 | const separator = indent ? `\n${baseIndent}${indent}` : '';
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| 361 | for (let i = 0; i < arr.length; i++) {
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| 362 | const key = arr[i];
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| 363 | output += `${i > 0 ? ',' : ''}${separator}${serialize(key, indent, baseIndent + indent)}`;
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| 364 | }
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| 365 | return `${output}${indent ? `\n${baseIndent}` : ''}]`;
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| 366 | }
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| 367 | function serializeObject(obj, indent, baseIndent) {
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| 368 | let output = '{';
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| 369 | const separator = indent ? `\n${baseIndent}${indent}` : '';
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| 370 | const entries = Object.entries(obj);
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| 371 | for (let i = 0; i < entries.length; i++) {
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| 372 | const [key, value] = entries[i];
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| 373 | const stringKey = makeLegalIdentifier(key) === key ? key : stringify(key);
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| 374 | output += `${i > 0 ? ',' : ''}${separator}${stringKey}:${indent ? ' ' : ''}${serialize(value, indent, baseIndent + indent)}`;
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| 375 | }
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| 376 | return `${output}${indent ? `\n${baseIndent}` : ''}}`;
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| 377 | }
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| 378 | function serialize(obj, indent, baseIndent) {
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| 379 | if (obj === Infinity)
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| 380 | return 'Infinity';
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| 381 | if (obj === -Infinity)
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| 382 | return '-Infinity';
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| 383 | if (obj === 0 && 1 / obj === -Infinity)
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| 384 | return '-0';
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| 385 | if (obj instanceof Date)
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| 386 | return `new Date(${obj.getTime()})`;
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| 387 | if (obj instanceof RegExp)
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| 388 | return obj.toString();
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| 389 | if (obj !== obj)
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| 390 | return 'NaN'; // eslint-disable-line no-self-compare
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| 391 | if (Array.isArray(obj))
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| 392 | return serializeArray(obj, indent, baseIndent);
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| 393 | if (obj === null)
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| 394 | return 'null';
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| 395 | if (typeof obj === 'object')
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| 396 | return serializeObject(obj, indent, baseIndent);
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| 397 | return stringify(obj);
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| 398 | }
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| 399 | const dataToEsm = function dataToEsm(data, options = {}) {
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| 400 | const t = options.compact ? '' : 'indent' in options ? options.indent : '\t';
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| 401 | const _ = options.compact ? '' : ' ';
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| 402 | const n = options.compact ? '' : '\n';
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| 403 | const declarationType = options.preferConst ? 'const' : 'var';
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| 404 | if (options.namedExports === false ||
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| 405 | typeof data !== 'object' ||
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| 406 | Array.isArray(data) ||
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| 407 | data instanceof Date ||
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| 408 | data instanceof RegExp ||
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| 409 | data === null) {
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| 410 | const code = serialize(data, options.compact ? null : t, '');
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| 411 | const magic = _ || (/^[{[\-\/]/.test(code) ? '' : ' '); // eslint-disable-line no-useless-escape
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| 412 | return `export default${magic}${code};`;
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| 413 | }
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| 414 | let namedExportCode = '';
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| 415 | const defaultExportRows = [];
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| 416 | for (const [key, value] of Object.entries(data)) {
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| 417 | if (key === makeLegalIdentifier(key)) {
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| 418 | if (options.objectShorthand)
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| 419 | defaultExportRows.push(key);
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| 420 | else
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| 421 | defaultExportRows.push(`${key}:${_}${key}`);
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| 422 | namedExportCode += `export ${declarationType} ${key}${_}=${_}${serialize(value, options.compact ? null : t, '')};${n}`;
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| 423 | }
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| 424 | else {
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| 425 | defaultExportRows.push(`${stringify(key)}:${_}${serialize(value, options.compact ? null : t, '')}`);
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| 426 | }
|
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| 427 | }
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| 428 | return `${namedExportCode}export default${_}{${n}${t}${defaultExportRows.join(`,${n}${t}`)}${n}};${n}`;
|
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| 429 | };
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|---|
| 430 |
|
|---|
| 431 | // TODO: remove this in next major
|
|---|
| 432 | var index = {
|
|---|
| 433 | addExtension,
|
|---|
| 434 | attachScopes,
|
|---|
| 435 | createFilter,
|
|---|
| 436 | dataToEsm,
|
|---|
| 437 | extractAssignedNames,
|
|---|
| 438 | makeLegalIdentifier
|
|---|
| 439 | };
|
|---|
| 440 |
|
|---|
| 441 | exports.addExtension = addExtension;
|
|---|
| 442 | exports.attachScopes = attachScopes;
|
|---|
| 443 | exports.createFilter = createFilter;
|
|---|
| 444 | exports.dataToEsm = dataToEsm;
|
|---|
| 445 | exports.default = index;
|
|---|
| 446 | exports.extractAssignedNames = extractAssignedNames;
|
|---|
| 447 | exports.makeLegalIdentifier = makeLegalIdentifier;
|
|---|
