| 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 | var helperPluginUtils = require('@babel/helper-plugin-utils');
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| 6 | var core = require('@babel/core');
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| 7 | var pluginTransformParameters = require('@babel/plugin-transform-parameters');
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| 8 | var helperCompilationTargets = require('@babel/helper-compilation-targets');
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| 9 |
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| 10 | function shouldStoreRHSInTemporaryVariable(node) {
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| 11 | if (!node) return false;
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| 12 | if (node.type === "ArrayPattern") {
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| 13 | const nonNullElements = node.elements.filter(element => element !== null);
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| 14 | if (nonNullElements.length > 1) return true;else return shouldStoreRHSInTemporaryVariable(nonNullElements[0]);
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| 15 | } else if (node.type === "ObjectPattern") {
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| 16 | const {
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| 17 | properties
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| 18 | } = node;
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| 19 | if (properties.length > 1) return true;else if (properties.length === 0) return false;else {
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| 20 | const firstProperty = properties[0];
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| 21 | if (firstProperty.type === "ObjectProperty") {
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| 22 | return shouldStoreRHSInTemporaryVariable(firstProperty.value);
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| 23 | } else {
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| 24 | return shouldStoreRHSInTemporaryVariable(firstProperty);
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| 25 | }
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| 26 | }
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| 27 | } else if (node.type === "AssignmentPattern") {
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| 28 | return shouldStoreRHSInTemporaryVariable(node.left);
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| 29 | } else if (node.type === "RestElement") {
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| 30 | if (node.argument.type === "Identifier") return true;
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| 31 | return shouldStoreRHSInTemporaryVariable(node.argument);
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| 32 | } else {
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| 33 | return false;
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| 34 | }
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| 35 | }
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| 36 |
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| 37 | var compatData = {
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| 38 | "Object.assign": {
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| 39 | chrome: "49",
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| 40 | opera: "36",
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| 41 | edge: "13",
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| 42 | firefox: "36",
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| 43 | safari: "10",
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| 44 | node: "6",
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| 45 | deno: "1",
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| 46 | ios: "10",
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| 47 | samsung: "5",
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| 48 | opera_mobile: "36",
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| 49 | electron: "0.37"
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| 50 | }
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| 51 | };
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| 52 |
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| 53 | const {
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| 54 | isAssignmentPattern,
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| 55 | isObjectProperty
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| 56 | } = core.types;
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| 57 | {
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| 58 | const node = core.types.identifier("a");
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| 59 | const property = core.types.objectProperty(core.types.identifier("key"), node);
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| 60 | const pattern = core.types.objectPattern([property]);
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| 61 | var ZERO_REFS = core.types.isReferenced(node, property, pattern) ? 1 : 0;
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| 62 | }
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| 63 | var index = helperPluginUtils.declare((api, opts) => {
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| 64 | var _api$assumption, _api$assumption2, _api$assumption3, _api$assumption4;
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| 65 | api.assertVersion("^7.0.0-0 || >8.0.0-alpha <8.0.0-beta");
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| 66 | const targets = api.targets();
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| 67 | const supportsObjectAssign = !helperCompilationTargets.isRequired("Object.assign", targets, {
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| 68 | compatData
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| 69 | });
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| 70 | const {
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| 71 | useBuiltIns = supportsObjectAssign,
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| 72 | loose = false
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| 73 | } = opts;
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| 74 | if (typeof loose !== "boolean") {
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| 75 | throw new Error(".loose must be a boolean, or undefined");
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| 76 | }
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| 77 | const ignoreFunctionLength = (_api$assumption = api.assumption("ignoreFunctionLength")) != null ? _api$assumption : loose;
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| 78 | const objectRestNoSymbols = (_api$assumption2 = api.assumption("objectRestNoSymbols")) != null ? _api$assumption2 : loose;
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| 79 | const pureGetters = (_api$assumption3 = api.assumption("pureGetters")) != null ? _api$assumption3 : loose;
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| 80 | const setSpreadProperties = (_api$assumption4 = api.assumption("setSpreadProperties")) != null ? _api$assumption4 : loose;
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| 81 | function getExtendsHelper(file) {
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| 82 | return useBuiltIns ? core.types.memberExpression(core.types.identifier("Object"), core.types.identifier("assign")) : file.addHelper("extends");
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| 83 | }
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| 84 | function hasRestElement(path) {
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| 85 | let foundRestElement = false;
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| 86 | visitRestElements(path, restElement => {
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| 87 | foundRestElement = true;
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| 88 | restElement.stop();
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| 89 | });
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| 90 | return foundRestElement;
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| 91 | }
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| 92 | function hasObjectPatternRestElement(path) {
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| 93 | let foundRestElement = false;
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| 94 | visitRestElements(path, restElement => {
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| 95 | if (restElement.parentPath.isObjectPattern()) {
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| 96 | foundRestElement = true;
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| 97 | restElement.stop();
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| 98 | }
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| 99 | });
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| 100 | return foundRestElement;
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| 101 | }
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| 102 | function visitRestElements(path, visitor) {
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| 103 | path.traverse({
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| 104 | Expression(path) {
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| 105 | const {
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| 106 | parent,
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| 107 | key
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| 108 | } = path;
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| 109 | if (isAssignmentPattern(parent) && key === "right" || isObjectProperty(parent) && parent.computed && key === "key") {
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| 110 | path.skip();
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| 111 | }
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| 112 | },
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| 113 | RestElement: visitor
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| 114 | });
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| 115 | }
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| 116 | function hasSpread(node) {
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| 117 | for (const prop of node.properties) {
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| 118 | if (core.types.isSpreadElement(prop)) {
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| 119 | return true;
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| 120 | }
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| 121 | }
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| 122 | return false;
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| 123 | }
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| 124 | function extractNormalizedKeys(node) {
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| 125 | const props = node.properties;
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| 126 | const keys = [];
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| 127 | let allPrimitives = true;
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| 128 | let hasTemplateLiteral = false;
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| 129 | for (const prop of props) {
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| 130 | const {
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| 131 | key
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| 132 | } = prop;
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| 133 | if (core.types.isIdentifier(key) && !prop.computed) {
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| 134 | keys.push(core.types.stringLiteral(key.name));
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| 135 | } else if (core.types.isTemplateLiteral(key)) {
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| 136 | keys.push(core.types.cloneNode(key));
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| 137 | hasTemplateLiteral = true;
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| 138 | } else if (core.types.isLiteral(key)) {
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| 139 | keys.push(core.types.stringLiteral(String(key.value)));
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| 140 | } else {
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| 141 | keys.push(core.types.cloneNode(key));
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| 142 | if (core.types.isMemberExpression(key, {
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| 143 | computed: false
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| 144 | }) && core.types.isIdentifier(key.object, {
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| 145 | name: "Symbol"
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| 146 | }) || core.types.isCallExpression(key) && core.types.matchesPattern(key.callee, "Symbol.for")) ; else {
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| 147 | allPrimitives = false;
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| 148 | }
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| 149 | }
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| 150 | }
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| 151 | return {
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| 152 | keys,
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| 153 | allPrimitives,
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| 154 | hasTemplateLiteral
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| 155 | };
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| 156 | }
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| 157 | function replaceImpureComputedKeys(properties, scope) {
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| 158 | const impureComputedPropertyDeclarators = [];
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| 159 | for (const propPath of properties) {
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| 160 | const key = propPath.get("key");
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| 161 | if (propPath.node.computed && !key.isPure()) {
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| 162 | const name = scope.generateUidBasedOnNode(key.node);
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| 163 | const declarator = core.types.variableDeclarator(core.types.identifier(name), key.node);
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| 164 | impureComputedPropertyDeclarators.push(declarator);
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| 165 | key.replaceWith(core.types.identifier(name));
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| 166 | }
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| 167 | }
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| 168 | return impureComputedPropertyDeclarators;
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| 169 | }
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| 170 | function removeUnusedExcludedKeys(path) {
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| 171 | const bindings = path.getOuterBindingIdentifierPaths();
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| 172 | Object.keys(bindings).forEach(bindingName => {
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| 173 | const bindingParentPath = bindings[bindingName].parentPath;
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| 174 | if (path.scope.getBinding(bindingName).references > ZERO_REFS || !bindingParentPath.isObjectProperty()) {
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| 175 | return;
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| 176 | }
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| 177 | bindingParentPath.remove();
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| 178 | });
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| 179 | }
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| 180 | function createObjectRest(path, file, objRef) {
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| 181 | const props = path.get("properties");
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| 182 | const last = props[props.length - 1];
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| 183 | core.types.assertRestElement(last.node);
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| 184 | const restElement = core.types.cloneNode(last.node);
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| 185 | last.remove();
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| 186 | const impureComputedPropertyDeclarators = replaceImpureComputedKeys(path.get("properties"), path.scope);
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| 187 | const {
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| 188 | keys,
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| 189 | allPrimitives,
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| 190 | hasTemplateLiteral
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| 191 | } = extractNormalizedKeys(path.node);
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| 192 | if (keys.length === 0) {
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| 193 | return [impureComputedPropertyDeclarators, restElement.argument, core.types.callExpression(getExtendsHelper(file), [core.types.objectExpression([]), core.types.sequenceExpression([core.types.callExpression(file.addHelper("objectDestructuringEmpty"), [core.types.cloneNode(objRef)]), core.types.cloneNode(objRef)])])];
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| 194 | }
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| 195 | let keyExpression;
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| 196 | if (!allPrimitives) {
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| 197 | keyExpression = core.types.callExpression(core.types.memberExpression(core.types.arrayExpression(keys), core.types.identifier("map")), [file.addHelper("toPropertyKey")]);
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| 198 | } else {
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| 199 | keyExpression = core.types.arrayExpression(keys);
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| 200 | if (!hasTemplateLiteral && !core.types.isProgram(path.scope.block)) {
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| 201 | const program = path.findParent(path => path.isProgram());
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| 202 | const id = path.scope.generateUidIdentifier("excluded");
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| 203 | program.scope.push({
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| 204 | id,
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| 205 | init: keyExpression,
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| 206 | kind: "const"
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| 207 | });
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| 208 | keyExpression = core.types.cloneNode(id);
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| 209 | }
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| 210 | }
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| 211 | return [impureComputedPropertyDeclarators, restElement.argument, core.types.callExpression(file.addHelper(`objectWithoutProperties${objectRestNoSymbols ? "Loose" : ""}`), [core.types.cloneNode(objRef), keyExpression])];
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| 212 | }
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| 213 | function replaceRestElement(parentPath, paramPath, container) {
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| 214 | if (paramPath.isAssignmentPattern()) {
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| 215 | replaceRestElement(parentPath, paramPath.get("left"), container);
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| 216 | return;
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| 217 | }
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| 218 | if (paramPath.isArrayPattern() && hasRestElement(paramPath)) {
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| 219 | const elements = paramPath.get("elements");
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| 220 | for (let i = 0; i < elements.length; i++) {
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| 221 | replaceRestElement(parentPath, elements[i], container);
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| 222 | }
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| 223 | }
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| 224 | if (paramPath.isObjectPattern() && hasRestElement(paramPath)) {
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| 225 | const uid = parentPath.scope.generateUidIdentifier("ref");
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| 226 | const declar = core.types.variableDeclaration("let", [core.types.variableDeclarator(paramPath.node, uid)]);
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| 227 | if (container) {
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| 228 | container.push(declar);
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| 229 | } else {
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| 230 | parentPath.ensureBlock();
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| 231 | parentPath.get("body").unshiftContainer("body", declar);
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| 232 | }
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| 233 | paramPath.replaceWith(core.types.cloneNode(uid));
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| 234 | }
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| 235 | }
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| 236 | return {
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| 237 | name: "transform-object-rest-spread",
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| 238 | manipulateOptions: (_, parser) => parser.plugins.push("objectRestSpread"),
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| 239 | visitor: {
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| 240 | Function(path) {
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| 241 | const params = path.get("params");
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| 242 | const paramsWithRestElement = new Set();
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| 243 | const idsInRestParams = new Set();
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| 244 | for (let i = 0; i < params.length; ++i) {
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| 245 | const param = params[i];
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| 246 | if (hasRestElement(param)) {
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| 247 | paramsWithRestElement.add(i);
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| 248 | for (const name of Object.keys(param.getBindingIdentifiers())) {
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| 249 | idsInRestParams.add(name);
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| 250 | }
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| 251 | }
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| 252 | }
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| 253 | let idInRest = false;
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| 254 | const IdentifierHandler = function (path, functionScope) {
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| 255 | const name = path.node.name;
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| 256 | if (path.scope.getBinding(name) === functionScope.getBinding(name) && idsInRestParams.has(name)) {
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| 257 | idInRest = true;
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| 258 | path.stop();
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| 259 | }
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| 260 | };
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| 261 | let i;
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| 262 | for (i = 0; i < params.length && !idInRest; ++i) {
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| 263 | const param = params[i];
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| 264 | if (!paramsWithRestElement.has(i)) {
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| 265 | if (param.isReferencedIdentifier() || param.isBindingIdentifier()) {
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| 266 | IdentifierHandler(param, path.scope);
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| 267 | } else {
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| 268 | param.traverse({
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| 269 | "Scope|TypeAnnotation|TSTypeAnnotation": path => path.skip(),
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| 270 | "ReferencedIdentifier|BindingIdentifier": IdentifierHandler
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| 271 | }, path.scope);
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| 272 | }
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| 273 | }
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| 274 | }
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| 275 | if (!idInRest) {
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| 276 | for (let i = 0; i < params.length; ++i) {
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| 277 | const param = params[i];
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| 278 | if (paramsWithRestElement.has(i)) {
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| 279 | replaceRestElement(path, param);
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| 280 | }
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| 281 | }
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| 282 | } else {
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| 283 | const shouldTransformParam = idx => idx >= i - 1 || paramsWithRestElement.has(idx);
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| 284 | pluginTransformParameters.convertFunctionParams(path, ignoreFunctionLength, shouldTransformParam, replaceRestElement);
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| 285 | }
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| 286 | },
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| 287 | VariableDeclarator(path, file) {
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| 288 | if (!path.get("id").isObjectPattern()) {
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| 289 | return;
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| 290 | }
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| 291 | let insertionPath = path;
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| 292 | const originalPath = path;
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| 293 | visitRestElements(path.get("id"), path => {
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| 294 | if (!path.parentPath.isObjectPattern()) {
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| 295 | return;
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| 296 | }
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| 297 | if (shouldStoreRHSInTemporaryVariable(originalPath.node.id) && !core.types.isIdentifier(originalPath.node.init)) {
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| 298 | const initRef = path.scope.generateUidIdentifierBasedOnNode(originalPath.node.init, "ref");
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| 299 | originalPath.insertBefore(core.types.variableDeclarator(initRef, originalPath.node.init));
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| 300 | originalPath.replaceWith(core.types.variableDeclarator(originalPath.node.id, core.types.cloneNode(initRef)));
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| 301 | return;
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| 302 | }
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| 303 | let ref = originalPath.node.init;
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| 304 | const refPropertyPath = [];
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| 305 | let kind;
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| 306 | path.findParent(path => {
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| 307 | if (path.isObjectProperty()) {
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| 308 | refPropertyPath.unshift(path);
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| 309 | } else if (path.isVariableDeclarator()) {
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| 310 | kind = path.parentPath.node.kind;
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| 311 | return true;
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| 312 | }
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| 313 | });
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| 314 | const impureObjRefComputedDeclarators = replaceImpureComputedKeys(refPropertyPath, path.scope);
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| 315 | refPropertyPath.forEach(prop => {
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| 316 | const {
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| 317 | node
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| 318 | } = prop;
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| 319 | ref = core.types.memberExpression(ref, core.types.cloneNode(node.key), node.computed || core.types.isLiteral(node.key));
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| 320 | });
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| 321 | const objectPatternPath = path.findParent(path => path.isObjectPattern());
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| 322 | const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectRest(objectPatternPath, file, ref);
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| 323 | if (pureGetters) {
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| 324 | removeUnusedExcludedKeys(objectPatternPath);
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| 325 | }
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| 326 | core.types.assertIdentifier(argument);
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| 327 | insertionPath.insertBefore(impureComputedPropertyDeclarators);
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| 328 | insertionPath.insertBefore(impureObjRefComputedDeclarators);
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| 329 | insertionPath = insertionPath.insertAfter(core.types.variableDeclarator(argument, callExpression))[0];
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| 330 | path.scope.registerBinding(kind, insertionPath);
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| 331 | if (objectPatternPath.node.properties.length === 0) {
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| 332 | objectPatternPath.findParent(path => path.isObjectProperty() || path.isVariableDeclarator()).remove();
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| 333 | }
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| 334 | });
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| 335 | },
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| 336 | ExportNamedDeclaration(path) {
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| 337 | const declaration = path.get("declaration");
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| 338 | if (!declaration.isVariableDeclaration()) return;
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| 339 | const hasRest = declaration.get("declarations").some(path => hasObjectPatternRestElement(path.get("id")));
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| 340 | if (!hasRest) return;
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| 341 | const specifiers = [];
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| 342 | for (const name of Object.keys(path.getOuterBindingIdentifiers(true))) {
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| 343 | specifiers.push(core.types.exportSpecifier(core.types.identifier(name), core.types.identifier(name)));
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| 344 | }
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| 345 | path.replaceWith(declaration.node);
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| 346 | path.insertAfter(core.types.exportNamedDeclaration(null, specifiers));
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| 347 | },
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| 348 | CatchClause(path) {
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| 349 | const paramPath = path.get("param");
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| 350 | replaceRestElement(path, paramPath);
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| 351 | },
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| 352 | AssignmentExpression(path, file) {
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| 353 | const leftPath = path.get("left");
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| 354 | if (leftPath.isObjectPattern() && hasRestElement(leftPath)) {
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| 355 | const nodes = [];
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| 356 | const refName = path.scope.generateUidBasedOnNode(path.node.right, "ref");
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| 357 | nodes.push(core.types.variableDeclaration("var", [core.types.variableDeclarator(core.types.identifier(refName), path.node.right)]));
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| 358 | const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectRest(leftPath, file, core.types.identifier(refName));
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| 359 | if (impureComputedPropertyDeclarators.length > 0) {
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| 360 | nodes.push(core.types.variableDeclaration("var", impureComputedPropertyDeclarators));
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| 361 | }
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| 362 | const nodeWithoutSpread = core.types.cloneNode(path.node);
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| 363 | nodeWithoutSpread.right = core.types.identifier(refName);
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| 364 | nodes.push(core.types.expressionStatement(nodeWithoutSpread));
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| 365 | nodes.push(core.types.expressionStatement(core.types.assignmentExpression("=", argument, callExpression)));
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| 366 | nodes.push(core.types.expressionStatement(core.types.identifier(refName)));
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| 367 | path.replaceWithMultiple(nodes);
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| 368 | }
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| 369 | },
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| 370 | ForXStatement(path) {
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| 371 | const {
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| 372 | node,
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| 373 | scope
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| 374 | } = path;
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| 375 | const leftPath = path.get("left");
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| 376 | const left = node.left;
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| 377 | if (!hasObjectPatternRestElement(leftPath)) {
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| 378 | return;
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| 379 | }
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| 380 | if (!core.types.isVariableDeclaration(left)) {
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| 381 | const temp = scope.generateUidIdentifier("ref");
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| 382 | node.left = core.types.variableDeclaration("var", [core.types.variableDeclarator(temp)]);
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| 383 | path.ensureBlock();
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| 384 | const body = path.node.body;
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| 385 | if (body.body.length === 0 && path.isCompletionRecord()) {
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| 386 | body.body.unshift(core.types.expressionStatement(scope.buildUndefinedNode()));
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| 387 | }
|
|---|
| 388 | body.body.unshift(core.types.expressionStatement(core.types.assignmentExpression("=", left, core.types.cloneNode(temp))));
|
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| 389 | } else {
|
|---|
| 390 | const pattern = left.declarations[0].id;
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|---|
| 391 | const key = scope.generateUidIdentifier("ref");
|
|---|
| 392 | node.left = core.types.variableDeclaration(left.kind, [core.types.variableDeclarator(key, null)]);
|
|---|
| 393 | path.ensureBlock();
|
|---|
| 394 | const body = node.body;
|
|---|
| 395 | body.body.unshift(core.types.variableDeclaration(node.left.kind, [core.types.variableDeclarator(pattern, core.types.cloneNode(key))]));
|
|---|
| 396 | }
|
|---|
| 397 | },
|
|---|
| 398 | ArrayPattern(path) {
|
|---|
| 399 | const objectPatterns = [];
|
|---|
| 400 | visitRestElements(path, path => {
|
|---|
| 401 | if (!path.parentPath.isObjectPattern()) {
|
|---|
| 402 | return;
|
|---|
| 403 | }
|
|---|
| 404 | const objectPattern = path.parentPath;
|
|---|
| 405 | const uid = path.scope.generateUidIdentifier("ref");
|
|---|
| 406 | objectPatterns.push(core.types.variableDeclarator(objectPattern.node, uid));
|
|---|
| 407 | objectPattern.replaceWith(core.types.cloneNode(uid));
|
|---|
| 408 | path.skip();
|
|---|
| 409 | });
|
|---|
| 410 | if (objectPatterns.length > 0) {
|
|---|
| 411 | const statementPath = path.getStatementParent();
|
|---|
| 412 | const statementNode = statementPath.node;
|
|---|
| 413 | const kind = statementNode.type === "VariableDeclaration" ? statementNode.kind : "var";
|
|---|
| 414 | statementPath.insertAfter(core.types.variableDeclaration(kind, objectPatterns));
|
|---|
| 415 | }
|
|---|
| 416 | },
|
|---|
| 417 | ObjectExpression(path, file) {
|
|---|
| 418 | if (!hasSpread(path.node)) return;
|
|---|
| 419 | let helper;
|
|---|
| 420 | if (setSpreadProperties) {
|
|---|
| 421 | helper = getExtendsHelper(file);
|
|---|
| 422 | } else {
|
|---|
| 423 | {
|
|---|
| 424 | try {
|
|---|
| 425 | helper = file.addHelper("objectSpread2");
|
|---|
| 426 | } catch (_unused) {
|
|---|
| 427 | this.file.declarations["objectSpread2"] = null;
|
|---|
| 428 | helper = file.addHelper("objectSpread");
|
|---|
| 429 | }
|
|---|
| 430 | }
|
|---|
| 431 | }
|
|---|
| 432 | let exp = null;
|
|---|
| 433 | let props = [];
|
|---|
| 434 | function make() {
|
|---|
| 435 | const hadProps = props.length > 0;
|
|---|
| 436 | const obj = core.types.objectExpression(props);
|
|---|
| 437 | props = [];
|
|---|
| 438 | if (!exp) {
|
|---|
| 439 | exp = core.types.callExpression(helper, [obj]);
|
|---|
| 440 | return;
|
|---|
| 441 | }
|
|---|
| 442 | if (pureGetters) {
|
|---|
| 443 | if (hadProps) {
|
|---|
| 444 | exp.arguments.push(obj);
|
|---|
| 445 | }
|
|---|
| 446 | return;
|
|---|
| 447 | }
|
|---|
| 448 | exp = core.types.callExpression(core.types.cloneNode(helper), [exp, ...(hadProps ? [core.types.objectExpression([]), obj] : [])]);
|
|---|
| 449 | }
|
|---|
| 450 | for (const prop of path.node.properties) {
|
|---|
| 451 | if (core.types.isSpreadElement(prop)) {
|
|---|
| 452 | make();
|
|---|
| 453 | exp.arguments.push(prop.argument);
|
|---|
| 454 | } else {
|
|---|
| 455 | props.push(prop);
|
|---|
| 456 | }
|
|---|
| 457 | }
|
|---|
| 458 | if (props.length) make();
|
|---|
| 459 | path.replaceWith(exp);
|
|---|
| 460 | }
|
|---|
| 461 | }
|
|---|
| 462 | };
|
|---|
| 463 | });
|
|---|
| 464 |
|
|---|
| 465 | exports.default = index;
|
|---|
| 466 | //# sourceMappingURL=index.js.map
|
|---|
