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465 lines
18 KiB
465 lines
18 KiB
3 years ago
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'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var helperPluginUtils = require('@babel/helper-plugin-utils');
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var syntaxObjectRestSpread = require('@babel/plugin-syntax-object-rest-spread');
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var core = require('@babel/core');
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var pluginTransformParameters = require('@babel/plugin-transform-parameters');
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var helperCompilationTargets = require('@babel/helper-compilation-targets');
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var compatData = require('@babel/compat-data/corejs2-built-ins');
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function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
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var compatData__default = /*#__PURE__*/_interopDefaultLegacy(compatData);
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const {
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isObjectProperty: isObjectProperty$1,
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isArrayPattern,
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isObjectPattern,
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isAssignmentPattern: isAssignmentPattern$1,
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isRestElement,
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isIdentifier
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} = core.types;
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function shouldStoreRHSInTemporaryVariable(node) {
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if (isArrayPattern(node)) {
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const nonNullElements = node.elements.filter(element => element !== null);
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if (nonNullElements.length > 1) return true;else return shouldStoreRHSInTemporaryVariable(nonNullElements[0]);
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} else if (isObjectPattern(node)) {
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const {
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properties
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} = node;
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if (properties.length > 1) return true;else if (properties.length === 0) return false;else {
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const firstProperty = properties[0];
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if (isObjectProperty$1(firstProperty)) {
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return shouldStoreRHSInTemporaryVariable(firstProperty.value);
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} else {
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return shouldStoreRHSInTemporaryVariable(firstProperty);
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}
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}
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} else if (isAssignmentPattern$1(node)) {
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return shouldStoreRHSInTemporaryVariable(node.left);
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} else if (isRestElement(node)) {
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if (isIdentifier(node.argument)) return true;
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return shouldStoreRHSInTemporaryVariable(node.argument);
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} else {
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return false;
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}
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}
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const {
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isAssignmentPattern,
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isObjectProperty
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} = core.types;
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{
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const node = core.types.identifier("a");
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const property = core.types.objectProperty(core.types.identifier("key"), node);
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const pattern = core.types.objectPattern([property]);
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var ZERO_REFS = core.types.isReferenced(node, property, pattern) ? 1 : 0;
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}
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var index = helperPluginUtils.declare((api, opts) => {
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var _api$assumption, _api$assumption2, _api$assumption3, _api$assumption4;
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api.assertVersion(7);
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const targets = api.targets();
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const supportsObjectAssign = !helperCompilationTargets.isRequired("es6.object.assign", targets, {
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compatData: compatData__default["default"]
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});
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const {
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useBuiltIns = supportsObjectAssign,
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loose = false
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} = opts;
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if (typeof loose !== "boolean") {
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throw new Error(".loose must be a boolean, or undefined");
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}
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const ignoreFunctionLength = (_api$assumption = api.assumption("ignoreFunctionLength")) != null ? _api$assumption : loose;
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const objectRestNoSymbols = (_api$assumption2 = api.assumption("objectRestNoSymbols")) != null ? _api$assumption2 : loose;
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const pureGetters = (_api$assumption3 = api.assumption("pureGetters")) != null ? _api$assumption3 : loose;
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const setSpreadProperties = (_api$assumption4 = api.assumption("setSpreadProperties")) != null ? _api$assumption4 : loose;
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function getExtendsHelper(file) {
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return useBuiltIns ? core.types.memberExpression(core.types.identifier("Object"), core.types.identifier("assign")) : file.addHelper("extends");
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}
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function hasRestElement(path) {
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let foundRestElement = false;
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visitRestElements(path, restElement => {
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foundRestElement = true;
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restElement.stop();
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});
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return foundRestElement;
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}
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function hasObjectPatternRestElement(path) {
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let foundRestElement = false;
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visitRestElements(path, restElement => {
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if (restElement.parentPath.isObjectPattern()) {
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foundRestElement = true;
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restElement.stop();
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}
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});
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return foundRestElement;
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}
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function visitRestElements(path, visitor) {
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path.traverse({
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Expression(path) {
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const {
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parent,
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key
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} = path;
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if (isAssignmentPattern(parent) && key === "right" || isObjectProperty(parent) && parent.computed && key === "key") {
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path.skip();
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}
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},
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RestElement: visitor
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});
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}
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function hasSpread(node) {
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for (const prop of node.properties) {
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if (core.types.isSpreadElement(prop)) {
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return true;
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}
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}
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return false;
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}
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function extractNormalizedKeys(node) {
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const props = node.properties;
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const keys = [];
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let allLiteral = true;
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let hasTemplateLiteral = false;
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for (const prop of props) {
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if (core.types.isIdentifier(prop.key) && !prop.computed) {
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keys.push(core.types.stringLiteral(prop.key.name));
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} else if (core.types.isTemplateLiteral(prop.key)) {
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keys.push(core.types.cloneNode(prop.key));
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hasTemplateLiteral = true;
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} else if (core.types.isLiteral(prop.key)) {
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keys.push(core.types.stringLiteral(String(
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prop.key.value)));
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} else {
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keys.push(core.types.cloneNode(prop.key));
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allLiteral = false;
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}
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}
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return {
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keys,
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allLiteral,
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hasTemplateLiteral
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};
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}
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function replaceImpureComputedKeys(properties, scope) {
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const impureComputedPropertyDeclarators = [];
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for (const propPath of properties) {
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const key = propPath.get("key");
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if (propPath.node.computed && !key.isPure()) {
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const name = scope.generateUidBasedOnNode(key.node);
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const declarator = core.types.variableDeclarator(core.types.identifier(name), key.node);
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impureComputedPropertyDeclarators.push(declarator);
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key.replaceWith(core.types.identifier(name));
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}
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}
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return impureComputedPropertyDeclarators;
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}
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function removeUnusedExcludedKeys(path) {
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const bindings = path.getOuterBindingIdentifierPaths();
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Object.keys(bindings).forEach(bindingName => {
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const bindingParentPath = bindings[bindingName].parentPath;
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if (path.scope.getBinding(bindingName).references > ZERO_REFS || !bindingParentPath.isObjectProperty()) {
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return;
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}
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bindingParentPath.remove();
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});
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}
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function createObjectRest(path, file, objRef) {
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const props = path.get("properties");
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const last = props[props.length - 1];
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core.types.assertRestElement(last.node);
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const restElement = core.types.cloneNode(last.node);
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last.remove();
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const impureComputedPropertyDeclarators = replaceImpureComputedKeys(path.get("properties"), path.scope);
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const {
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keys,
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allLiteral,
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hasTemplateLiteral
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} = extractNormalizedKeys(path.node);
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if (keys.length === 0) {
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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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}
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let keyExpression;
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if (!allLiteral) {
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keyExpression = core.types.callExpression(core.types.memberExpression(core.types.arrayExpression(keys), core.types.identifier("map")), [file.addHelper("toPropertyKey")]);
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} else {
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keyExpression = core.types.arrayExpression(keys);
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if (!hasTemplateLiteral && !core.types.isProgram(path.scope.block)) {
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const program = path.findParent(path => path.isProgram());
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const id = path.scope.generateUidIdentifier("excluded");
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program.scope.push({
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id,
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init: keyExpression,
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kind: "const"
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});
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keyExpression = core.types.cloneNode(id);
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}
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}
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return [impureComputedPropertyDeclarators, restElement.argument, core.types.callExpression(file.addHelper(`objectWithoutProperties${objectRestNoSymbols ? "Loose" : ""}`), [core.types.cloneNode(objRef), keyExpression])];
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}
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function replaceRestElement(parentPath, paramPath, container) {
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if (paramPath.isAssignmentPattern()) {
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replaceRestElement(parentPath, paramPath.get("left"), container);
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return;
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}
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if (paramPath.isArrayPattern() && hasRestElement(paramPath)) {
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const elements = paramPath.get("elements");
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for (let i = 0; i < elements.length; i++) {
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replaceRestElement(parentPath, elements[i], container);
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}
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}
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if (paramPath.isObjectPattern() && hasRestElement(paramPath)) {
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const uid = parentPath.scope.generateUidIdentifier("ref");
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const declar = core.types.variableDeclaration("let", [core.types.variableDeclarator(paramPath.node, uid)]);
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if (container) {
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container.push(declar);
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} else {
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parentPath.ensureBlock();
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parentPath.get("body").unshiftContainer("body", declar);
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}
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paramPath.replaceWith(core.types.cloneNode(uid));
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}
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}
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return {
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name: "proposal-object-rest-spread",
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inherits: syntaxObjectRestSpread.default,
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visitor: {
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Function(path) {
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const params = path.get("params");
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const paramsWithRestElement = new Set();
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const idsInRestParams = new Set();
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for (let i = 0; i < params.length; ++i) {
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const param = params[i];
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if (hasRestElement(param)) {
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paramsWithRestElement.add(i);
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for (const name of Object.keys(param.getBindingIdentifiers())) {
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idsInRestParams.add(name);
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}
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}
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}
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let idInRest = false;
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const IdentifierHandler = function (path, functionScope) {
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const name = path.node.name;
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if (path.scope.getBinding(name) === functionScope.getBinding(name) && idsInRestParams.has(name)) {
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idInRest = true;
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path.stop();
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}
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};
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let i;
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for (i = 0; i < params.length && !idInRest; ++i) {
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const param = params[i];
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if (!paramsWithRestElement.has(i)) {
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if (param.isReferencedIdentifier() || param.isBindingIdentifier()) {
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IdentifierHandler(param, path.scope);
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} else {
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param.traverse({
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"Scope|TypeAnnotation|TSTypeAnnotation": path => path.skip(),
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"ReferencedIdentifier|BindingIdentifier": IdentifierHandler
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}, path.scope);
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}
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}
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}
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if (!idInRest) {
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for (let i = 0; i < params.length; ++i) {
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const param = params[i];
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if (paramsWithRestElement.has(i)) {
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replaceRestElement(path, param);
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}
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}
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} else {
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const shouldTransformParam = idx => idx >= i - 1 || paramsWithRestElement.has(idx);
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pluginTransformParameters.convertFunctionParams(path, ignoreFunctionLength, shouldTransformParam, replaceRestElement);
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}
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},
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VariableDeclarator(path, file) {
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if (!path.get("id").isObjectPattern()) {
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return;
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}
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let insertionPath = path;
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const originalPath = path;
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visitRestElements(path.get("id"), path => {
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if (!path.parentPath.isObjectPattern()) {
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return;
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}
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if (
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shouldStoreRHSInTemporaryVariable(originalPath.node.id) && !core.types.isIdentifier(originalPath.node.init)) {
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const initRef = path.scope.generateUidIdentifierBasedOnNode(originalPath.node.init, "ref");
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originalPath.insertBefore(core.types.variableDeclarator(initRef, originalPath.node.init));
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originalPath.replaceWith(core.types.variableDeclarator(originalPath.node.id, core.types.cloneNode(initRef)));
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return;
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}
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let ref = originalPath.node.init;
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const refPropertyPath = [];
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let kind;
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path.findParent(path => {
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if (path.isObjectProperty()) {
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refPropertyPath.unshift(path);
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} else if (path.isVariableDeclarator()) {
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kind = path.parentPath.node.kind;
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return true;
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}
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});
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const impureObjRefComputedDeclarators = replaceImpureComputedKeys(refPropertyPath, path.scope);
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refPropertyPath.forEach(prop => {
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const {
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node
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} = prop;
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ref = core.types.memberExpression(ref, core.types.cloneNode(node.key), node.computed || core.types.isLiteral(node.key));
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});
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const objectPatternPath = path.findParent(path => path.isObjectPattern());
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const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectRest(objectPatternPath, file, ref);
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if (pureGetters) {
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removeUnusedExcludedKeys(objectPatternPath);
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}
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core.types.assertIdentifier(argument);
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insertionPath.insertBefore(impureComputedPropertyDeclarators);
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insertionPath.insertBefore(impureObjRefComputedDeclarators);
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insertionPath = insertionPath.insertAfter(core.types.variableDeclarator(argument, callExpression))[0];
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path.scope.registerBinding(kind, insertionPath);
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if (objectPatternPath.node.properties.length === 0) {
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objectPatternPath.findParent(path => path.isObjectProperty() || path.isVariableDeclarator()).remove();
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}
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});
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},
|
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ExportNamedDeclaration(path) {
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const declaration = path.get("declaration");
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|
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if (!declaration.isVariableDeclaration()) return;
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const hasRest = declaration.get("declarations").some(path => hasObjectPatternRestElement(path.get("id")));
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|
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if (!hasRest) return;
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const specifiers = [];
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for (const name of Object.keys(path.getOuterBindingIdentifiers(true))) {
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specifiers.push(core.types.exportSpecifier(core.types.identifier(name), core.types.identifier(name)));
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}
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path.replaceWith(declaration.node);
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path.insertAfter(core.types.exportNamedDeclaration(null, specifiers));
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||
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},
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CatchClause(path) {
|
||
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const paramPath = path.get("param");
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||
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replaceRestElement(path, paramPath);
|
||
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|
},
|
||
|
|
AssignmentExpression(path, file) {
|
||
|
|
const leftPath = path.get("left");
|
||
|
|
if (leftPath.isObjectPattern() && hasRestElement(leftPath)) {
|
||
|
|
const nodes = [];
|
||
|
|
const refName = path.scope.generateUidBasedOnNode(path.node.right, "ref");
|
||
|
|
nodes.push(core.types.variableDeclaration("var", [core.types.variableDeclarator(core.types.identifier(refName), path.node.right)]));
|
||
|
|
const [impureComputedPropertyDeclarators, argument, callExpression] = createObjectRest(leftPath, file, core.types.identifier(refName));
|
||
|
|
if (impureComputedPropertyDeclarators.length > 0) {
|
||
|
|
nodes.push(core.types.variableDeclaration("var", impureComputedPropertyDeclarators));
|
||
|
|
}
|
||
|
|
const nodeWithoutSpread = core.types.cloneNode(path.node);
|
||
|
|
nodeWithoutSpread.right = core.types.identifier(refName);
|
||
|
|
nodes.push(core.types.expressionStatement(nodeWithoutSpread));
|
||
|
|
nodes.push(core.types.expressionStatement(core.types.assignmentExpression("=", argument, callExpression)));
|
||
|
|
nodes.push(core.types.expressionStatement(core.types.identifier(refName)));
|
||
|
|
path.replaceWithMultiple(nodes);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
ForXStatement(path) {
|
||
|
|
const {
|
||
|
|
node,
|
||
|
|
scope
|
||
|
|
} = path;
|
||
|
|
const leftPath = path.get("left");
|
||
|
|
const left = node.left;
|
||
|
|
if (!hasObjectPatternRestElement(leftPath)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (!core.types.isVariableDeclaration(left)) {
|
||
|
|
const temp = scope.generateUidIdentifier("ref");
|
||
|
|
node.left = core.types.variableDeclaration("var", [core.types.variableDeclarator(temp)]);
|
||
|
|
path.ensureBlock();
|
||
|
|
const body = path.node.body;
|
||
|
|
if (body.body.length === 0 && path.isCompletionRecord()) {
|
||
|
|
body.body.unshift(core.types.expressionStatement(scope.buildUndefinedNode()));
|
||
|
|
}
|
||
|
|
body.body.unshift(core.types.expressionStatement(core.types.assignmentExpression("=", left, core.types.cloneNode(temp))));
|
||
|
|
} else {
|
||
|
|
const pattern = left.declarations[0].id;
|
||
|
|
const key = scope.generateUidIdentifier("ref");
|
||
|
|
node.left = core.types.variableDeclaration(left.kind, [core.types.variableDeclarator(key, null)]);
|
||
|
|
path.ensureBlock();
|
||
|
|
const body = node.body;
|
||
|
|
body.body.unshift(core.types.variableDeclaration(node.left.kind, [core.types.variableDeclarator(pattern, core.types.cloneNode(key))]));
|
||
|
|
}
|
||
|
|
},
|
||
|
|
ArrayPattern(path) {
|
||
|
|
const objectPatterns = [];
|
||
|
|
visitRestElements(path, path => {
|
||
|
|
if (!path.parentPath.isObjectPattern()) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const objectPattern = path.parentPath;
|
||
|
|
const uid = path.scope.generateUidIdentifier("ref");
|
||
|
|
objectPatterns.push(core.types.variableDeclarator(objectPattern.node, uid));
|
||
|
|
objectPattern.replaceWith(core.types.cloneNode(uid));
|
||
|
|
path.skip();
|
||
|
|
});
|
||
|
|
if (objectPatterns.length > 0) {
|
||
|
|
const statementPath = path.getStatementParent();
|
||
|
|
const statementNode = statementPath.node;
|
||
|
|
const kind = statementNode.type === "VariableDeclaration" ? statementNode.kind : "var";
|
||
|
|
statementPath.insertAfter(core.types.variableDeclaration(kind, objectPatterns));
|
||
|
|
}
|
||
|
|
},
|
||
|
|
ObjectExpression(path, file) {
|
||
|
|
if (!hasSpread(path.node)) return;
|
||
|
|
let helper;
|
||
|
|
if (setSpreadProperties) {
|
||
|
|
helper = getExtendsHelper(file);
|
||
|
|
} else {
|
||
|
|
try {
|
||
|
|
helper = file.addHelper("objectSpread2");
|
||
|
|
} catch (_unused) {
|
||
|
|
this.file.declarations["objectSpread2"] = null;
|
||
|
|
|
||
|
|
helper = file.addHelper("objectSpread");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
let exp = null;
|
||
|
|
let props = [];
|
||
|
|
function make() {
|
||
|
|
const hadProps = props.length > 0;
|
||
|
|
const obj = core.types.objectExpression(props);
|
||
|
|
props = [];
|
||
|
|
if (!exp) {
|
||
|
|
exp = core.types.callExpression(helper, [obj]);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pureGetters) {
|
||
|
|
if (hadProps) {
|
||
|
|
exp.arguments.push(obj);
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
exp = core.types.callExpression(core.types.cloneNode(helper), [exp,
|
||
|
|
...(hadProps ? [core.types.objectExpression([]), obj] : [])]);
|
||
|
|
}
|
||
|
|
for (const prop of path.node.properties) {
|
||
|
|
if (core.types.isSpreadElement(prop)) {
|
||
|
|
make();
|
||
|
|
exp.arguments.push(prop.argument);
|
||
|
|
} else {
|
||
|
|
props.push(prop);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (props.length) make();
|
||
|
|
path.replaceWith(exp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
});
|
||
|
|
|
||
|
|
exports["default"] = index;
|
||
|
|
//# sourceMappingURL=index.js.map
|