288 lines
9.1 KiB
JavaScript
288 lines
9.1 KiB
JavaScript
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"use strict";
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exports.__esModule = true;
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var _getIterator2 = require("babel-runtime/core-js/get-iterator");
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var _getIterator3 = _interopRequireDefault(_getIterator2);
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exports.default = function (_ref) {
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var t = _ref.types;
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function hasRestProperty(path) {
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var foundRestProperty = false;
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path.traverse({
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RestProperty: function RestProperty() {
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foundRestProperty = true;
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path.stop();
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}
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});
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return foundRestProperty;
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}
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function hasSpread(node) {
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for (var _iterator = node.properties, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
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var _ref2;
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if (_isArray) {
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if (_i >= _iterator.length) break;
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_ref2 = _iterator[_i++];
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} else {
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_i = _iterator.next();
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if (_i.done) break;
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_ref2 = _i.value;
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}
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var prop = _ref2;
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if (t.isSpreadProperty(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 createObjectSpread(file, props, objRef) {
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var restProperty = props.pop();
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var keys = [];
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for (var _iterator2 = props, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) {
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var _ref3;
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if (_isArray2) {
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if (_i2 >= _iterator2.length) break;
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_ref3 = _iterator2[_i2++];
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} else {
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_i2 = _iterator2.next();
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if (_i2.done) break;
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_ref3 = _i2.value;
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}
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var prop = _ref3;
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var key = prop.key;
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if (t.isIdentifier(key) && !prop.computed) {
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key = t.stringLiteral(prop.key.name);
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}
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keys.push(key);
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}
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return [restProperty.argument, t.callExpression(file.addHelper("objectWithoutProperties"), [objRef, t.arrayExpression(keys)])];
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}
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function replaceRestProperty(parentPath, paramPath, i, numParams) {
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if (paramPath.isAssignmentPattern()) {
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replaceRestProperty(parentPath, paramPath.get("left"), i, numParams);
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return;
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}
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if (paramPath.isObjectPattern() && hasRestProperty(paramPath)) {
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var uid = parentPath.scope.generateUidIdentifier("ref");
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var declar = t.variableDeclaration("let", [t.variableDeclarator(paramPath.node, uid)]);
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declar._blockHoist = i ? numParams - i : 1;
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parentPath.ensureBlock();
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parentPath.get("body").unshiftContainer("body", declar);
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paramPath.replaceWith(uid);
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}
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}
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return {
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inherits: require("babel-plugin-syntax-object-rest-spread"),
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visitor: {
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Function: function Function(path) {
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var params = path.get("params");
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for (var i = 0; i < params.length; i++) {
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replaceRestProperty(params[i].parentPath, params[i], i, params.length);
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}
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},
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VariableDeclarator: function 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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var insertionPath = path;
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path.get("id").traverse({
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RestProperty: function RestProperty(path) {
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if (this.originalPath.node.id.properties.length > 1 && !t.isIdentifier(this.originalPath.node.init)) {
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var initRef = path.scope.generateUidIdentifierBasedOnNode(this.originalPath.node.init, "ref");
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this.originalPath.insertBefore(t.variableDeclarator(initRef, this.originalPath.node.init));
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this.originalPath.replaceWith(t.variableDeclarator(this.originalPath.node.id, initRef));
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return;
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}
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var ref = this.originalPath.node.init;
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var refPropertyPath = [];
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path.findParent(function (path) {
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if (path.isObjectProperty()) {
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refPropertyPath.unshift(path.node.key.name);
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} else if (path.isVariableDeclarator()) {
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return true;
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}
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});
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if (refPropertyPath.length) {
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refPropertyPath.forEach(function (prop) {
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ref = t.memberExpression(ref, t.identifier(prop));
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});
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}
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var _createObjectSpread = createObjectSpread(file, path.parentPath.node.properties, ref),
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argument = _createObjectSpread[0],
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callExpression = _createObjectSpread[1];
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insertionPath.insertAfter(t.variableDeclarator(argument, callExpression));
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insertionPath = insertionPath.getSibling(insertionPath.key + 1);
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if (path.parentPath.node.properties.length === 0) {
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path.findParent(function (path) {
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return path.isObjectProperty() || path.isVariableDeclarator();
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}).remove();
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}
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}
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}, {
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originalPath: path
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});
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},
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ExportNamedDeclaration: function ExportNamedDeclaration(path) {
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var declaration = path.get("declaration");
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if (!declaration.isVariableDeclaration()) return;
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if (!hasRestProperty(declaration)) return;
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var specifiers = [];
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for (var name in path.getOuterBindingIdentifiers(path)) {
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var id = t.identifier(name);
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specifiers.push(t.exportSpecifier(id, id));
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}
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path.replaceWith(declaration.node);
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path.insertAfter(t.exportNamedDeclaration(null, specifiers));
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},
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CatchClause: function CatchClause(path) {
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var paramPath = path.get("param");
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replaceRestProperty(paramPath.parentPath, paramPath);
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},
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AssignmentExpression: function AssignmentExpression(path, file) {
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var leftPath = path.get("left");
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if (leftPath.isObjectPattern() && hasRestProperty(leftPath)) {
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var nodes = [];
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var ref = void 0;
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if (path.isCompletionRecord() || path.parentPath.isExpressionStatement()) {
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ref = path.scope.generateUidIdentifierBasedOnNode(path.node.right, "ref");
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nodes.push(t.variableDeclaration("var", [t.variableDeclarator(ref, path.node.right)]));
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}
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var _createObjectSpread2 = createObjectSpread(file, path.node.left.properties, ref),
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argument = _createObjectSpread2[0],
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callExpression = _createObjectSpread2[1];
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var nodeWithoutSpread = t.clone(path.node);
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nodeWithoutSpread.right = ref;
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nodes.push(t.expressionStatement(nodeWithoutSpread));
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nodes.push(t.toStatement(t.assignmentExpression("=", argument, callExpression)));
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if (ref) {
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nodes.push(t.expressionStatement(ref));
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}
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path.replaceWithMultiple(nodes);
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}
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},
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ForXStatement: function ForXStatement(path) {
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var node = path.node,
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scope = path.scope;
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var leftPath = path.get("left");
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var left = node.left;
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if (t.isObjectPattern(left) && hasRestProperty(leftPath)) {
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var temp = scope.generateUidIdentifier("ref");
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node.left = t.variableDeclaration("var", [t.variableDeclarator(temp)]);
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path.ensureBlock();
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node.body.body.unshift(t.variableDeclaration("var", [t.variableDeclarator(left, temp)]));
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return;
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}
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if (!t.isVariableDeclaration(left)) return;
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var pattern = left.declarations[0].id;
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if (!t.isObjectPattern(pattern)) return;
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var key = scope.generateUidIdentifier("ref");
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node.left = t.variableDeclaration(left.kind, [t.variableDeclarator(key, null)]);
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path.ensureBlock();
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node.body.body.unshift(t.variableDeclaration(node.left.kind, [t.variableDeclarator(pattern, key)]));
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},
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ObjectExpression: function ObjectExpression(path, file) {
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if (!hasSpread(path.node)) return;
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var useBuiltIns = file.opts.useBuiltIns || false;
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if (typeof useBuiltIns !== "boolean") {
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throw new Error("transform-object-rest-spread currently only accepts a boolean " + "option for useBuiltIns (defaults to false)");
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}
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var args = [];
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var props = [];
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function push() {
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if (!props.length) return;
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args.push(t.objectExpression(props));
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props = [];
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}
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for (var _iterator3 = path.node.properties, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : (0, _getIterator3.default)(_iterator3);;) {
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var _ref4;
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if (_isArray3) {
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if (_i3 >= _iterator3.length) break;
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_ref4 = _iterator3[_i3++];
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} else {
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_i3 = _iterator3.next();
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if (_i3.done) break;
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_ref4 = _i3.value;
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}
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var prop = _ref4;
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if (t.isSpreadProperty(prop)) {
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push();
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args.push(prop.argument);
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} else {
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props.push(prop);
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}
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}
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push();
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if (!t.isObjectExpression(args[0])) {
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args.unshift(t.objectExpression([]));
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}
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var helper = useBuiltIns ? t.memberExpression(t.identifier("Object"), t.identifier("assign")) : file.addHelper("extends");
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path.replaceWith(t.callExpression(helper, args));
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}
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}
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};
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};
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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module.exports = exports["default"];
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